DE102018111361A1 - Lining hose for the renovation of fluid-carrying systems - Google Patents

Abstract

Lining hose for refurbishing fluid-carrying systems, comprising at least one resin-impregnated fiber tube, and optionally a reinforced or unreinforced inner film tube on the side facing the flowing medium of the resin-impregnated fiber tube, wherein the resin used for impregnation or the inner film tube or both 0.001 to 0.09 wt %, based on the weight of the resin or the weight of the inner film tube, are added to nanoparticles.

Description

The invention relates to a lining hose for refurbishing fluid-carrying systems with at least one resin-impregnated fiber hose.

Lining hoses for remediation of fluid-carrying systems are known per se and described in the literature.

In practice, so-called liners based on thermoplastic materials with fiber reinforcement have proven useful for this purpose. These are flexible lining hoses, which are introduced into the pipe system to be rehabilitated, then brought to the inner surface of the pipeline system to be rehabilitated and finally brought by curing the resin contained in the fiber tube in the final form.

The production of such lining hoses is for example in the WO 95/04646 described. According to the method described there, a foil strip is first wound helically onto a winding mandrel which consists of a plurality of parallel winding fingers which can be changed in their distance from the winding mandrel axis, wherein an inner film tube serving as a protective film is formed. At least one resin-impregnated sliver is wound on the thus-obtained inner film tube and in turn a second foil strip, which forms an outer film tube.

Curable polymers with nanoparticulate fillers have been described in the literature for various applications.

So be in the EP A 1502727 Composite moldings prepared by injecting a low viscosity plastic into a fiber carrier and then curing by heating. Before injection, nanoparticles are added to the low-viscosity plastic. These are so-called prepregs, which are no longer flexible after curing. A use in lining hoses for the refurbishment of fluid-carrying systems is neither described nor suggested.

Subject of the EP A 1 634 921 and the EP A 1 786 866 are polymeric compositions which contain nanoparticles as fillers in addition to an unsaturated polyester and another copolymer with groups reactive toward the polyester. Composites, coatings, potting compounds, adhesives and dental materials having improved mechanical properties, in particular improved impact resistance, can be obtained from these compositions.

In the US 2010/0143701 describes a method in which carbon nanotubes dispersed in a solvent are applied to a fibrous surface, then the solvent is evaporated and finally the coated surface thus obtained is coated with a polymer to form a fiber reinforced composite with embedded carbon nanotubes.

WO A 2005/028174 relates to the preparation of epoxy-based polymer composites containing functionalized carbon nanotubes.

From the WO 2016/096773 Lining hoses are known which contain 0.1 to 40% by weight of nanoparticles.

Subject of the US 2008/0271802 are materials for the rehabilitation of pipelines, which contain carbon nanotubes in an amount of 0.5 to 40 wt% to improve the thermal conductivity.

It is an object of the present invention to provide lining hoses for refurbishing fluid-carrying systems which have advantageous mechanical properties and an abrasion-resistant surface.

This object is achieved with lining hoses according to claim 1. Preferred embodiments of the lining hoses according to the invention can be found in the subclaims and the following detailed description.

Another aspect of the invention relates to a method for producing the lining hoses according to the invention and the use of the lining hoses according to the invention for the rehabilitation of water and sewage piping systems.

Under fluid-carrying systems in the context of the present invention, all systems are to be understood in which fluids, that is liquids or gases can be transported. There are no particular restrictions on the design, diameter or material of the systems to be renovated.

The choice of material is determined by the fluids to be transported in the systems; their properties ultimately determine the service life of such systems and the need for a refurbishment that can be made with the liner hoses according to the invention.

The invention accordingly provides a lining hose for refurbishing fluid-carrying systems, comprising at least one resin-impregnated fiber hose, and optionally a reinforced or unreinforced inner film hose on the side facing the flowing medium of the resin-impregnated fiber hose, wherein the resin used for impregnation or the inner film tube or both 0.001 to 0.09 wt%, based on the weight of the resin or the weight of the inner film tube, are added to nanoparticles.

Surprisingly, it was found that even with very low levels of nanoparticles, which are among those in the WO 2016/096773 used or in the US 2008/0271802 are regarded as essential minimum quantities, the desired improvement in the properties of the lining hoses can be achieved, which is both processing technology and economically advantageous.

For the purposes of the present invention, the term nanoparticles is to be understood as meaning any particle or fibrous particles whose largest dimension in one or more spatial directions or, in the case of spherical or spherical particles, their mean diameter is less than 300 nm, preferably less than 150 nm and in particular less than 100 nm.

The term average particle diameter as used in the present invention refers to the average diameter D ₅₀ on the basis of the intensity-weighted particle size distribution obtained according to the so-called Contin data inversion algorithm. D ₅₀ divides the intensity-weighted particle size distribution into two equal fractions, the first of which contains particles below D ₅₀ and the second particles above D ₅₀ .

D ₅₀ is generally determined by dynamic light scattering according to ISO 22412: 2008. The determination is carried out at a temperature of 25 ° C. The refractive index and the viscosity coefficient of the dispersion medium should be determined as accurately as possible or known from the literature. After a temperature calibration, the position of the measuring cell is adjusted to achieve an optimum scatter signal. Details of the measurement can be found in the mentioned ISO standard.

Spherical or spherical particles have a more or less pronounced isometric structure, i. the dimensions in all three spatial directions are comparable.

The ratio of the dimensions of a particle in different spatial directions is characterized by the so-called aspect ratio, which describes the largest ratio of the dimension of a particle in two different spatial directions. Accordingly, the aspect ratio of ideal spherical particles is 1, while in the case of fibrous or platelet-shaped particles it is usually considerably greater than 1 and often reaches values of 100 or more. Platelet or fibrous nanoparticles are therefore characterized by indicating the size in the spatial direction in which the corresponding particle has the largest dimension.

In principle, suitable nanoparticles are all types of inorganic or organic products which can be prepared in appropriate particle sizes and in some cases are also commercially available. Methods for producing such nanoparticles are known to those skilled in the art and described in the literature.

Spherical or spherical fillers are, for example, metal oxides, metal carbonates, metal sulfates or the like. Oxides of Ba, Al, Si, Zr, Ce and Ti and mixed oxides of these metals are preferred. As carbonates or sulfates may be mentioned here preferably the carbonates or sulfates of the alkali and alkaline earth metals.

Platelet-shaped fillers are for example in large Variety in Plastics Additive Handbook (Hanser Verlag, 5th edition) in chapter 17.4.2 on pages 926 to 930 which will be referred to here for more details.

Needle-shaped or acicular particles have also been described in wide variety in the literature. Preferred acicular additives for use in the curing resins have an aspect ratio in the range of 2 to 100, preferably 2-20.

Wollastonite, xonotlite, sepiolite, attapulgite and palygorskite may be named as preferred acicular particles.

Fibrous fillers have even higher aspect ratios than acicular fillers. A preferred group of fibrous nanoparticles are carbon-based particles, also known as carbon nanotubes.

Other suitable fibrous nanoparticles which can be mentioned here are glass fibers or fibers based on Al, Ti, Mg, Al silicate, Si or boron carbide fibers. Glass fibers are preferred here.

The nanoparticulate fillers are added to the resin used for impregnating the resin-impregnated fiber ribbons or the inner tubular film in an amount of 0.001 to 0.09, preferably from 0.003 to 0.08 and particularly preferably from 0.005 to 0.05 wt%, by weight of the resin or the weight of the inner film tube added.

The addition of the nanoparticles is carried out to the resin used for impregnation prior to impregnation in a conventional manner, so that further details are unnecessary here.

The above particle size of the nanoparticles refers to the time of incorporation into the resin used for impregnation. Agglomeration in the course of the addition or impregnation of the resin-impregnated fiber tubes with the nanoparticle-containing impregnated resin may result in a different, generally larger particle size value in the finished liner tube.

Unsaturated polyester resins (UP resins) or vinyl ester resins (VE resins), which may be dissolved, for example, in styrene and / or an acrylic ester, are preferably used as reaction resins for impregnating the fiber ribbons. Suitable reaction resins are known to the person skilled in the art and commercially available in various designs.

For the preparation of UP resins, polybasic unsaturated dicarboxylic acids are esterified with diols to give low molecular weight products which are polymerized on curing, usually with vinyl compounds (especially styrene) as comonomers to high molecular three-dimensional networks.

As the acid component of UP resins it is also possible to use mixtures of saturated and unsaturated bifunctional carboxylic acids or their anhydrides. Thus, the acid components adipic acid, glutaric acid, phthalic acid, isophthalic acid and terephthalic acid and their reactive derivatives can be used. Preferred unsaturated acids are maleic acid or its anhydride, fumaric acid and Diels-Alder adducts of maleic anhydride and cyclopentadiene. The diols used are preferably ethylene glycol, propanediol, dipropanediol, diethylene glycol, 2,2-dimethyl-1,2-propanediol, 1,4-butanediol, 2,2,4-trimethyl-1,3-pentanediol or bisphenol A. The comonomers required for crosslinking the UP resins may simultaneously be solvents for the low molecular weight oligomers; Styrene, which is used in many UP resins, can be mentioned as an example. Other examples of suitable comonomers are methyl styrene, vinyl toluene or methyl methacrylate.

Bifunctional monomers such as diallyl phthalate or divinylbenzene may also be added.

Other constituents of UP resins such as hardeners, polymerization initiators, accelerators, plasticizers and the like are known to the person skilled in the art and described in the literature, so that further statements are dispensable here.

Vinylester resins (also called VE resins), another group for impregnating the fiber ribbons of suitable resins, are obtained by preparing in a first stage an epoxy oligomer having terminal vinyl ester groups such as acrylate or methacrylate groups and reactive double bonds. In a second step, the crosslinking then takes place, styrene being generally used as the solvent and crosslinking agent. The crosslink density of VE resins is generally lower than that of UP resins because there are less reactive double bonds.

For VE resins, the backbone of the oligomer preferably has aromatic glycidyl ethers of phenols or epoxidized novolacs. Terminally, these are preferably esterified with (meth) acrylic acid.

The reaction resins used for impregnating the fiber ribbons can thermally (usually by peroxide catalysts) or by means of radiation, for example by UV light with photoinitiators such as in the EP-A 23623 described, cured. Also so-called combination hardening with a peroxide initiator used for the thermal curing in combination with photoinitiators are possible and have proved to be advantageous especially for large wall thicknesses of the lining hoses. A method for such a combination hardening is, for example, in EP-A 1262708 described.

After soaking, the resin can be suitably thickened, as for example in the WO-A 2006/061129 is described. This increases the viscosity of the resin and thus improves the handleability and windability of the related fiber ribbons.

As slivers impregnated with the nanoparticle-containing reaction resin, in the lining tubes according to the present invention, in principle, all products known to the person skilled in the art in the form of fabrics, knitted fabrics, mats or fleeces, the fibers in the form of long filaments or short fibers can be used.

Corresponding products are known per se to the person skilled in the art and commercially available in great variety from different manufacturers.

In this context, fabrics are generally understood to mean sheet-like textile products comprising at least two fiber systems crossed at right angles, with the so-called warp running in the longitudinal direction and the so-called weft being perpendicular thereto.

Knitted fabrics are generally understood to mean fabrics which are formed by stitching.

Fibrous fabrics are a processing variant of fibers in which the fibers are not interwoven, but aligned parallel to each other in a chemical carrier substance (the matrix) are embedded and usually fixed by cover sheets from above and below and optionally by means of a step path or an adhesive. As a result of the parallel alignment of the fibers, fiber fabrics have a pronounced anisotropy of the strengths orientation direction and perpendicular thereto, which may be of interest for some applications.

A fleece consists of loosely connected fibers, which are not yet connected to each other. The strength of a fleece is based only on the fiber's own liability, but can be influenced by work-up. In order to be able to process and use the fleece, it is usually solidified, for which various methods can be used.

Nonwovens are different from fabrics, or knitted fabrics, which are characterized by the manufacturing process specific laying of individual fibers or threads. Nonwovens, on the other hand, consist of fibers whose position can only be described by the methods of statistics. The fibers are confused with each other in the nonwoven fabric. Accordingly, the English term nonwoven (non-woven) clearly distinguishes it from woven fabric. Nonwovens are distinguished, inter alia, by the fiber material (eg the polymer in the case of chemical fibers), the bonding process, the type of fiber (staple or continuous fibers), the fiber fineness and the fiber orientation. The fibers can be deposited defined in a preferred direction or be completely stochastically oriented as the random nonwoven fabric.

If the fibers do not have a preferred direction of orientation, it is called an isotropic nonwoven. If the fibers are arranged more frequently in one direction than in the other direction, then this is called anisotropy.

In the context of the present invention, felts in the context of the invention are also to be understood as felts. A felt is a fabric of a disordered, difficult to separate fiber material. In principle, felts are thus nonwoven textiles. From synthetic fibers and vegetable fibers, felts are generally produced by dry needling (so-called needle felting) or by solidification with water jets emerging from a nozzle beam under high pressure. The individual fibers in the felt are intertwined with each other.

Needlefelt is usually made mechanically with numerous barbed needles, with the barbs inversed like a harpoon. This will force the fibers into the felt and the needle will come out easily. Repeated grooving entangles the fibers with each other and subsequently retreats them chemically or with steam.

Felts, like fleeces, can be made from virtually any natural or synthetic fiber. In addition to needling or in addition, the entanglement of the fibers with a pulsed water jet or with a binder is possible. The latter methods are particularly suitable for fibers without flake structure such as polyester or polyamide fibers.

Felts have a good temperature resistance and are usually moisture-repellent, which may be particularly advantageous when used in liquid-conducting systems.

Preferably, fiberglass fabric or glass fiber fabric are used for the lining hoses according to the invention.

According to a preferred embodiment, the lining hoses according to the invention have in the radial direction at least two different resin-impregnated fiber ribbons wound one above the other.

According to a preferred embodiment, the at least two different fiber ribbons differ in at least one of the parameters fiber incorporation, fiber orientation, fiber length or fiber type.

In the context of the present invention, fiber incorporation is understood to mean the way in which the fibers are introduced into a carrier material.

The fiber slivers used are selected so that the liner tube on the one hand has a property profile optimized for the particular application and on the other hand the simplest possible manufacturability on existing devices for producing such lining hoses is possible.

Through the combined use of several different fiber ribbons with different structure in terms of fiber type, fiber length, fiber incorporation or fiber orientation, the property profile can be individually adapted to the particular application, without the need for elaborate remodeling of the devices used for the preparation. By choosing the order in which the at least two different fiber ribbons are wound, the radial and longitudinal profile of the lining hoses according to the invention can be designed individually and optimally adapted to the specific application.

The length of the fibers used is not subject to any particular limitation, i. Both so-called long fibers and short fibers or fiber fragments can be used. Over the length of the fibers used, the properties of the corresponding fiber ribbons can be adjusted and controlled over a wide range.

The type of fibers used is not subject to any restriction. By way of example only, glass fibers, carbon fibers or synthetic fibers such as aramid fibers or thermoplastic fibers such as polyesters or polyamides or polyolefins (e.g., polypropylene) may be mentioned, which are known to those skilled in the art and are commercially available in a wide variety. For economic reasons, glass fibers are generally preferred; However, if a particular heat resistance is of importance, for example, aramid fibers or carbon fibers can be used which can offer advantages over glass fibers in terms of strength at higher temperatures.

In some cases, it has proven advantageous to select a first resin-impregnated sliver of woven, knitted, laid, mat, felt or non-woven fabrics, the length of the fibers being selected according to the desired application. In this case, e.g. the first resin-impregnated sliver is a scrim made of parallel-oriented continuous fibers, preferably parallel-aligned, continuous glass fibers. Advantageously, the continuous fibers are aligned substantially perpendicular to the longitudinal direction of the resin-impregnated sliver. With such a first sliver preferably a second sliver can be combined in which fibers are arranged undirected in a random fiber mat. The first sliver gives the lining hose a very good strength in the longitudinal direction, which is advantageous when installed in the piping systems to be rehabilitated. The second sliver of non-oriented fibers in the form of a random fiber mat stabilizes the inner surface due to the high resin absorption and avoids pores on the inner surface, which could lead to damage on prolonged contact with aggressive media. On the other hand, the use of the directional fiber scrim reduces the risk of the fiber mat being pulled apart during impregnation, resulting in uneven impregnation. Static requirements for the liner also make this embodiment preferable.

Particularly advantageously, in a first wound resin-impregnated fiber band, the fiber fabric may already be needle-punched or sewn to a random fiber mat, i. The first and also the following subsequently wound fiber slivers can also have a multilayer structure. It has proved to be advantageous in some cases, if at least one of the following slivers wound on a first sliver are constructed multi-layered such that between two layers with undirected fibers an intermediate layer with parallel to the longitudinal direction of the sliver arranged chopped fibers are included, preferably a length in the range of 2 to 60, preferably from 3 to 30 cm.

According to a particularly preferred embodiment, the lining hoses according to the invention comprise a resin-impregnated fiber tube, which is produced by winding at least one fiber band with fibers oriented essentially perpendicular to the longitudinal direction of the fiber band and at least one further fiber band with fibers oriented parallel to the longitudinal direction of the fiber band.

According to a third preferred embodiment, a non-woven, preferably made of polyolefin fibers, more preferably a polypropylene non-woven as at least a first resin-impregnated sliver is used, which can be combined with any other sliver of the types described above.

Finally, according to a fourth preferred embodiment, a felt of the type described above is used as one of the slivers, which in turn may be combined with at least one further sliver of the type described above.

Basically, as mentioned, it is possible to combine any kind of slivers, which achieve the desired property profile for the planned application in the best possible way. Thus, fiber slivers with similar fiber binding (ie, for example, two fiber scrims or two fiber scrims) can be used which contain fibers of different chemical composition, different orientation or with different lengths. By way of example, short fibers in a sliver may be combined with long fibers in at least one other sliver wound thereon or fabrics may be combined with nonwovens, mats or knits. The use of two fiber fabrics with fibers of the same type of integration and the same orientation and length but different chemical composition are possible. This opens up a wide range of variation for the person skilled in the art within which he can virtually "tailor" the properties of the lining tube for the individual application.

Based on the desired property profile, the person skilled in the art selects the suitable fiber slivers for the lining hoses according to the invention with the aid of his specialist knowledge of the properties of the various types of slivers and is thus able to optimally provide products adapted to the individual application.

The width of the slivers is not subject to any particular restrictions; For a variety of applications, slivers having a width of from 20 to 150, preferably from 30 to 100 and in particular from 40 to 80 cm have been found suitable.

The thickness of the slivers in the lining tubes of the invention is also not particularly limited and is determined by the thickness of the lining tube for the desired application. Thicknesses of the fiber ribbons in the range of 0.01 to 1, in particular 0.05 to 0.5 mm have been proven in practice.

According to a preferred embodiment, the lining hoses according to the invention have a possibly reinforced inner film tube on the basis of a thermoplastic material, which can be removed after installation of the lining tube or remain in the pipeline system to be rehabilitated .. This inner film tube contains, if not removed after installation 0.1 to 40% by weight, based on the total weight of the inner film tube, of nanoparticles as described above. It is also possible that both the inner film tube and the resin used to impregnate the fiber ribbons contain nanoparticles.

In principle, all polymers which can be processed into films or film tubes of the thickness or thickness required for the particular application are suitable as thermoplastic materials for the inner film tube. In addition, if curing is photochemical, it should be noted that the products have sufficient transmittance for the wavelength or wavelength range of the radiation used for curing. If the inner film tube after curing in the system to be rehabilitated should remain, is also to ensure the sufficient stability against the transported fluids as well as against the resin of the fiber tubes. In the majority of cases, however, the inner film tube is removed after curing. Basically, taking into account these criteria are polyolefins such as polyethylene or polypropylene, polyamides, polyesters such as polybutylene terephthalate, polyethylene terephthalate or polyethylene naphthalate, polyvinyl chloride, polyacrylonitrile or thermoplastic polyurethanes or mixtures of these polymers. Thermoplastic elastomers are also suitable in principle. Thermoplastic elastomers are materials in which elastic polymer chains are incorporated in thermoplastic material. Despite the lack of vulcanization required of the classic elastomers, thermoplastic elastomers have rubbery properties, which may be advantageous in some applications. By way of example, polyolefin elastomers or polyamide elastomers may be mentioned here. Corresponding products are described in the literature and commercially available from various manufacturers, so that here detailed information is unnecessary.

Particularly suitable and preferred thermoplastics are, for example, polyolefins and / or polyamides, wherein film tubes based on composite films of polyolefins and polyamides have proven advantageous in certain applications, since they are better than the styrene usually used as a solvent for the resins used Have blocking effect as pure polyethylene films. Thus, the leakage of this solvent / monomer on the inside of the lining tube before curing can be better prevented.

According to a preferred embodiment, the inner film tube has a reinforcement. This is chosen so that on the one hand receives optimized for the particular application property profile and on the other hand, the simplest possible production of lining hoses is given.

Particularly preferably, the inner film tube has a fiber-based reinforcement, in particular based on slivers as described above, or a nonwoven on.

The thickness of the reinforcement, for example the nonwovens, is advantageously in the range of 0.001 to 10 mm, particularly preferably in the range of 0.02 to 5 mm.

According to a particularly preferred embodiment, the fiber-based reinforcement is a glass fiber fabric or a glass fiber fabric.

According to a further preferred embodiment, the inner film tube has a fleece lamination.

In lamination, the reinforcement is physically bonded to the film that forms the basis for the inner film tube. An example of this is the lamination of the reinforcement on the film, which leads to a partial melting of the film. Corresponding methods for lamination are known to the person skilled in the art and described in the literature, so that detailed explanations are unnecessary here.

In general, but without being limited thereto, the flat film from which the inner film tube is formed in the preferred embodiment has a thickness in the range of 40 to 800 microns, preferably in the range of 50 to 500 microns, and more preferably from 80 to 200 μm.

If curing is to take place after exposure into the pipeline system to be renovated by exposure, it must be ensured that the materials used (both for the flat film from which the inner film tube is formed and for the film strip) are sufficiently permeable to the light used for the irradiation so as not to impair or prevent the hardening. In the case of thermal curing, this is not important.

According to a further preferred embodiment, the lining hoses according to the invention have at least one outer film tube on the basis of a thermoplastic material.

Suitable outer film tubes for use in the inventive liner tubes are known and described in the literature. As an example, let us mention the ones already mentioned WO95 / 04646 and the WO 00/73692 referenced, wherein the reinforced outer film tubes according to the WO 00/73692 represent a preferred embodiment.

In principle, the at least one outer film tube should provide light protection (to prevent premature and undesired hardening in the case of photochemical curing) and, moreover, prevent the escape of resin from the resin-impregnated fiber tubes into the pipeline system to be rehabilitated. In particular, laid in the ground to be rehabilitated pipe systems this is usually desired or required already from aspects of environmental protection. It is also advantageous if the outer film tube provides some protection against mechanical damage when the lining tube is pulled into the pipeline system to be rehabilitated and thereby bring roughness in the surface or fractures the risk of mechanical damage to the hose with it.

As a material for the at least one outer film tube b), in principle, all thermoplastics, possibly taking into account the above-mentioned individual requirements in each case into consideration. The person skilled in the art will select the suitable thermoplastic according to the specified requirement profile. The same applies to the thickness and the possible use of reinforcing materials for the outer film tube on which the expert will decide on the basis of the individual case.

The lining hose according to the invention is preferably obtained by winding slivers on or around the inner film tube by means of a winding mandrel or other suitable device.

In principle, however, it is also possible to obtain fiber hoses by incorporating the longitudinal edges of flat films and joining these edges in a suitable manner. Corresponding methods are known to the person skilled in the art and described in the literature.

According to a preferred embodiment, the lining hose is obtained by winding fiber slivers by means of a device as in FIG WO 95/04646 described.

The superposed wound fiber slivers in the lining hoses according to the invention in this embodiment overlap at their edges, e.g. around 5 to 300 mm.

The finished lining hose, which can be generally 1 to 1000 m, in particular 30 to 300 m long, is introduced into the pipeline system to be rehabilitated during the actual pipeline renovation and inflated there, for example, with pressurized water or preferably with air, so that it closely adjoins the Interior wall of the to be rehabilitated Conforms to the line system. Finally, the resin is thermally or preferably by means of hot water by means of UV light, such as in EP-A 122 246 and EP-A 198 17 413 described, hardened.

The lining hoses according to the invention are suitable for the refurbishment of fluid-carrying systems of any kind and allow rapid remediation while minimizing the downtime of the systems while they must be taken out of service. This reduces downtime compared to replacing damaged parts. Particularly advantageously, the lining hoses according to the invention can be used for the refurbishment of such systems which are difficult to access for a classic repair or refurbishment involving the replacement of parts, for example because they are components of an overall device or because they are inaccessible, e.g. because they are buried in the ground. Examples include piping systems for the transport of water or wastewater, which are laid in cities and communities in the ground and often under roads or other traffic routes. In the case of rehabilitation by replacement, these pipelines must first be cleared up by appropriate earthworks and the traffic routes are not accessible to traffic for longer periods of time, which leads to considerable impairments, especially in the case of higher traffic volumes. In comparison, the rehabilitation of such pipe systems with the lining hoses according to the invention without earthworks in a few hours or days without extensive earthworks can be performed.

The nanoparticles in the reaction resins used for impregnation lead to an improvement in the surface structure of the side of the lining tube, which is after removal of the possibly existing inner film tube in contact with the flowing medium, whereby the friction and thus the abrasive effect of the flowing medium can be reduced , If the inner film tube is not removed, the nanoparticles therein enhance the structure of the surface in contact with the flowing medium and reduce abrasion by the flowing medium. In this case, it is not mandatory that the resin used to impregnate the resin impregnated fiber tube also contain nanoparticles. The desired reduction in abrasion is already achieved by the equipment by the equipment of the inner film tube with nanoparticles.

Furthermore, the addition of nanoparticles to the impregnated reaction resin leads to an improvement of the mechanical properties such as modulus of elasticity or strength.

The use of nanoparticles in the impregnated resin furthermore has the advantage that the resins thus obtained generally have a very good permeability for the radiation used for the curing, since the particle size of the nanoparticles is less than the wavelength of the radiation. This facilitates uniform and complete curing of the lining hoses according to the invention in comparison with resins containing larger particles.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 9504646 [0004, 0084, 0089]
• EP 1502727A [0006]
• EP 1634921 A [0007]
• EP 1786866 A [0007]
• US 2010/0143701 [0008]
• WO 2005/028174 A [0009]
• WO 2016/096773 [0010, 0018]
• US 2008/0271802 [0011, 0018]
• EP 23623A [0041]
• EP 1262708 A [0041]
• WO 2006/061129 A [0042]
• WO 0073692 [0084]
• EP 122246A [0091]
• EP 19817413A [0091]

Cited non-patent literature

• Variety in Plastics Additive Handbook (Hanser Verlag, 5th edition) in chapter 17.4.2 on pages 926 to 930 [0026]

Claims (11)

Lining hose for refurbishing fluid-carrying systems, comprising at least one resin-impregnated fiber tube, and optionally a reinforced or unreinforced inner film tube on the side facing the flowing medium of the resin-impregnated fiber tube, wherein the resin used for impregnation or the inner film tube or both 0.001 to 0.09 wt %, based on the weight of the resin or the weight of the inner film tube, are added to nanoparticles. Lining hose after Claim 1 wherein nanoparticles are added to the resin used for impregnation. Lining hose after Claim 1 or 2 , wherein the inner film tube nanoparticles are added. Lining hose after Claim 1 or 2 , characterized in that the nanoparticles at the time of incorporation into the resin used for impregnation have an average particle size D ₅₀ or a largest dimension in a spatial direction of 300 nm. Lining hose according to one of the Claims 1 to 4 , characterized in that as the resin, an unsaturated polyester resin or a vinyl ester resin is contained. Lining hose according to one of the Claims 1 to 5 , characterized in that the sliver is a woven, knitted fabric, scrim, mat or fleece. Lining hose according to one of the Claims 1 to 6 , characterized in that it is the fiber ribbon is a glass fiber fabric or a Glasfasergelege. Lining hose according to one of the Claims 1 to 7 , characterized in that the nanoparticles are metal oxides, metal carbonates, metal sulfates, wollastonite, xonotlite, sepiolite, attapulgite, palygorskite, or carbon nanotubes. Lining hose according to one of the Claims 1 to 8th , characterized in that the inner film tube has a reinforcement. Lining hose according to one of the Claims 1 to 9 , characterized in that it comprises an outer film tube. Use of the lining hoses according to one of Claims 1 to 10 for the rehabilitation of water and sewage piping systems.