JPH07196823A - SUS mesh reinforced prepreg - Google Patents

Abstract

(57) [Summary] [Purpose] When manufacturing fiber-reinforced composite resin material molded products such as ski poles and golf club shafts, the surface of the molded product is easily reinforced to facilitate damage to the surface during use. It is to provide a prepreg that can be prevented. [Structure] An SUS mesh-reinforced prepreg 1 was constructed by coating an ultrathin SUS mesh 2 woven with SUS wire with a matrix resin 3. [Effect] When manufacturing a fiber-reinforced composite resin material molded product, for example, a ski pole, using a prepreg, by winding about 1 to 2 layers of the SUS mesh reinforced prepreg 1 on the winding layer of a normal prepreg, the ski pole A reinforcing layer of the prepreg 1 can be formed on the surface, and the surface can be easily reinforced to prevent the surface from being damaged or broken during use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a SUS mesh reinforced prepreg suitable for strengthening the surface of a fiber reinforced composite resin material molded article such as a ski pole, a golf club shaft, and a fishing rod to prevent surface damage. .

[0002]

2. Description of the Related Art In recent years, fiber-reinforced composite resin materials (F) using prepregs having carbon fibers and various other reinforcing fibers have been used.
RP) is widely used in various technical fields because it is lightweight and has high mechanical strength. For example, sports equipment such as ski poles (ski skis), golf club shafts, fishing rods, hobbies, etc. Even in Japan, it has delivered extremely good results.

For example, in a ski pole, as shown in FIG. 6, basically, a predetermined number of fiber-reinforced prepregs 101 cut into a predetermined shape are wound around a mandrel 100, and the matrix resin of the prepreg 101 is cured to prepare the prepreg 101. Is a fiber-reinforced composite resin material. At this time, in order to improve the twisting and bending performance, as the fiber reinforced prepreg, as is well understood by also referring to FIG. 5, the reinforced fiber is parallel to the axis of the ski pole (θ = 0 °). The arranged prepregs 101S ₁ (straight layer 101S ₁ ′) and the reinforcing fibers form an angle (θ) in opposite directions with respect to the axis of the shaft.
Prepregs 101A (101A ₁ , 101A ₂ ) arranged so as to be inclined (usually θ = 25 ° to 90 °)
(Angle layer 101A ') and a prepreg 101S ₂ (straight layer 101S ₂ ') in which reinforcing fibers are arranged parallel to the axis of the shaft (θ = 0 °) are used, and basically, As shown in FIG. 5, prepregs 101S ₁ and 101S ₂ are formed on the inner and outer layers of the pole.
(Straight layers 101S ₁ , 101S ₂ ′) and prepreg 101A (angle layer 101A ′) are often used for the intermediate layer. In some cases, prepreg 101
A (angle layer 101A ') may be omitted.

[0004]

However, for example, in the case of a ski pole made of a fiber-reinforced composite resin material, if the ski pole is damaged due to collision of the edges of the ski, the pole may break from the damaged portion during use.

The problem of breakage due to such damage similarly arises to some extent in other fiber-reinforced composite resin material molded products such as golf club shafts and fishing rods.

Therefore, the surface of a fiber-reinforced composite resin material molded product such as a ski pole, a golf club shaft, or a fishing rod is easily strengthened to prevent the surface from being damaged, thereby preventing breakage due to damage. It is desired to extend their lifespan.

Therefore, an object of the present invention is to use a fiber-reinforced composite resin material molded product such as a ski pole or a golf club shaft on the surface of the molded product before or after molding, and to make the surface of the molded product simple. Another object of the present invention is to provide a prepreg that can be easily reinforced to prevent surface damage during use.

[0008]

The above object is achieved by a SUS mesh reinforced prepreg according to the present invention. In summary, the present invention is characterized in that an ultra-thin SUS mesh woven with SUS wire is coated with a matrix resin.
It is a mesh reinforced prepreg.

[0009]

The SUS mesh reinforced prepreg according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of the prepreg of the present invention. The SUS mesh reinforced prepreg 1 of the present invention comprises a SUS wire woven ultrathin SUS mesh 2 coated with a matrix resin 3, and a fiber reinforced composite resin material molded product such as a ski pole is formed using the prepreg. During production, one or two layers of prepreg 1 are wound around the outermost layer of a winding layer of a normal prepreg using carbon fiber or the like, and used to form a reinforcing layer on the surface of the ski pole. The entire SUS mesh reinforced prepreg 1 is supported on the release paper 4, and the cover film 5 is covered on the surface of the prepreg 1 opposite to the release paper 4. When using the prepreg 1, the release paper 4 and the cover are covered. The film 5 is peeled off.

The SUS mesh 2 is, as shown in FIG.
The warp yarn 6 and the weft yarn 7 made of SUS wire are woven into a plain weave or a twill weave to form an ultrathin wire mesh. The SUS mesh 2 has a SUS wire diameter of 40 μm, a mesh of 300 mesh, a weight per unit area of about 230 g / m ² , and a thickness of the mesh 2 of about 120 μm.

The resin 3 coated on the SUS mesh 2 is
As shown in FIG. 1, the surface of the mesh 2 is covered so that the mesh 2 is impregnated in the mesh and the mesh 2 is buried.

As the matrix resin 3, a thermosetting matrix resin such as an epoxy resin, an unsaturated polyester resin, a polyurethane resin, a diallyl phthalate resin or a phenol resin can be used. Further, a curing agent and other imparting agents such as a flexibility imparting agent are appropriately added so that the curing temperature is 50 to 200 ° C.

As a preferred example, an epoxy resin is preferable as the matrix resin, and as usable epoxy resins, for example, (1) glycidyl ether type epoxy resin (bisphenol A, F, S type epoxy resin, Novolac type epoxy resin, brominated bisphenol A type epoxy resin); (2) cycloaliphatic epoxy resin;
(3) Glycidyl ester-based epoxy resin; (4) Glycidylamine-based epoxy resin; (5) Heterocyclic epoxy resin; and one or more kinds selected from other various epoxy resins, particularly bisphenol A, F, S
Glycidyl amine epoxy resin is preferably used.
As the curing agent, an amine-based curing agent such as dicyandiamide (DICY) or diaminophenyl sulfone (D
DS), diaminodiphenylmethane (DDM); acid anhydride systems such as hexahydrophthalic anhydride (HHPA),
Methylhexahydrophthalic anhydride (MHHPA) or the like is used, but an amine-based curing agent is particularly preferably used.

The mixing ratio of the SUS mesh 2 and the matrix resin 3 can be adjusted as desired, but generally, the SU is added in a weight percentage.
S mesh: matrix resin = 30-80: 20-70
The range is good, preferably 40-75: 25-60. If the proportion of the SUS mesh 2 is less than 30% by weight, when the matrix resin 3 is cured to make the prepreg 1 a fiber-reinforced composite resin material, the strength of the composite resin material due to the reinforcement by the SUS mesh 2 becomes insufficient, and 80% by weight
If it exceeds, the matrix resin 3 will be too small, and the strength of the matrix resin 3 of the composite resin material may not be sufficient.

The total thickness of the SUS mesh reinforced prepreg 1 is preferably 20 to 300 μm. If the thickness of the prepreg 1 is less than 20 μm, it is too thin to obtain a reinforcing effect, and it is not practical to use it for producing a fiber reinforced composite resin material molded article. Also the thickness is 300
If it exceeds μm, it is too thick, and it becomes difficult to form a fiber-reinforced composite resin material molded article with good moldability.

SUS mesh reinforced prepreg 1 of the present invention
Can be manufactured by any method, but two resin coatings in which a matrix resin is coated on release paper are used, and a SUS mesh is placed between the resins of the two resin coated papers. hand,
The prepreg 1 can be suitably manufactured by continuously supplying these to a laminating apparatus and heating and pressing with a hot roll. However, it is not limited to this.

The SUS mesh reinforced prepreg 1 is used in combination with a normal prepreg such as a carbon fiber prepreg in the production of a fiber reinforced composite resin material molded product. For example, in the case of a ski pole, as shown in FIG. 6 above, basically, a prepreg 101S in which carbon reinforcing fibers are arranged parallel to the axis of the ski pole (θ = 0 °).
₁ and the prepreg 101A arranged so that the reinforcing fibers are inclined in the opposite directions with respect to the axis of the ski pole by an angle (θ) (usually θ = 25 ° to 90 °, preferably 30 ° to 60 °). ₁ , 101A ₂ and a prepreg 101S ₂ in which reinforcing fibers are arranged parallel to the axis of the ski pole (θ = 0 °) are provided and manufactured by curing, but according to the present invention, Further, as shown in FIG. 3, the SUS mesh reinforced prepreg 1 is disposed on the outermost layer of the prepreg 101S ₂ .

That is, according to the present invention, the prepreg 10
Straight layer 101S by 1S _{1 1} ', the prepreg 1
01A _1, 101A ₂ by angular layer 101A ', the straight layer 101S ₂ by prepreg 101S _2' ski poles having a reinforcing layer 1 'by and SUS mesh reinforced prepreg 1 is formed. These straight layers 101S ₁ ′ and 101S ₂ ′ and the angle layer 101
It is not necessary for A ′ and further the reinforcing layer 1 ′ to be a single layer, and a plurality of layers can be used if necessary. In some cases, a reinforcing layer (not shown) may be added to the ski pole to compensate for insufficient strength at the front and rear ends of the ski pole.

Although the angle layer 101A 'is provided in FIG. 3, the angle layer 101A' can be omitted.

Of course, the straight layers 101S ₁ ′, 101
S ₂ 'and the angle layer 101A' are as reinforcing fibers,
Using other fibers such as glass fiber other than carbon fiber,
It is also possible to form using various prepregs known to those skilled in the art.

SUS mesh reinforced prepreg 1 of the present invention
According to the ski pole manufactured by combining the above, not only is it lightweight, but the surface is reinforced by the reinforcing layer 1'by the SUS mesh reinforced prepreg 1 formed by laminating a single layer to a plurality of layers on the surface. Therefore, the surface is prevented from being damaged during use, and the breakage due to the damage can be easily prevented and the life can be extended.

The present invention will be further described based on specific examples.

Example 1 According to the present invention, a SUS mesh reinforced prepreg 1 was prepared and used in combination with an ordinary prepreg to manufacture a ski pole. The manufacturing method is as follows. As shown in FIG. 6, the ski pole type mandrel 100 is shown.
As the carbon fiber prepreg 101S ₁ for the straight layer 101S ₁ ′, 8 layers of PAN-based carbon fiber having a thickness of 120 μm and a resin amount of 32% are wound on the above, and as the glass fiber prepreg 101A for the angle layer 101A ′,
E glass with a thickness of 130 μm and a resin amount of 35% is + 30 °,
Wrap a total of 2 layers at -30 °, and then straight layer 1
Eight layers of the carbon fiber prepreg 101S ₂ for 01S ₂ ′ were wound, and finally, as shown in FIG. 3, two layers of the SUS mesh reinforced prepreg 1 according to the present invention were wound for the reinforcing layer 1 ′. Then, a polypropylene drawing tape was taped on the resultant, which was heat-cured, and then subjected to predetermined finishing such as polishing to form the ski pole shown in FIG.

The SUS mesh prepreg 1 was a SUS mesh coated with an epoxy resin, and the resin content was 35 wt%. The SUS mesh is a plain weave of SUS wire, and the weight is 230 g / m ² and the thickness is 120.
It was a 300 mesh product of μm.

As shown in FIG. 4, the ski pole thus obtained is set so that its tip is brought into contact with the supporting portion 22 of the L-shaped jig 20 and stands at an angle of 60 degrees from the horizontal plane.
A 1 kg weight 24 having an acute angle of 0 degrees was dropped at 3.3 m / sec using a falling-ball impact tester at a place where the reinforcing layer 1'of the ski pole was provided, and the degree of damage to the ski pole was checked. Examined.

As a result, the damage of the ski pole due to the collision of the weight 24 can be reduced by the surface reinforcement layer 1'of the SUS mesh reinforced prepreg, and the ski pole is broken only after reaching the number of collisions of 35 times.

Also, a snow ring or the like was attached to the ski pole and used in practice, but it was lightweight and did not lose its flexibility,
Good operability was maintained for the ski pole.

On the other hand, in the above, when a collision test was conducted without providing the reinforcing layer on the surface of the ski pole, the ski pole was damaged and the pole was broken after 18 collisions.

Example 2 SU in which SUS wire was twill-woven into SUS mesh prepreg 1
Similar to Example 1 except that S mesh was used,
A ski pole was manufactured and a damage test was carried out by a weight collision.

As a result, the ski pole was broken only after the number of collisions reached 32 times.

Further, when the ski pole is actually used with a snow ring or the like attached, it is lightweight and does not lose its flexibility, and good operability can be maintained.

[0033]

As described above, according to the SUS mesh reinforced prepreg of the present invention, when a fiber reinforced composite resin material molded product such as a ski pole or a golf club shaft is manufactured, the molded product is molded before or after molding. By using about 1 to 2 layers on the surface of, it is possible to easily reinforce the surface of the molded product and easily prevent surface damage during use.
It is possible to prevent breakage of molded products and extend their life.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a SUS mesh reinforced prepreg of the present invention.

FIG. 2 is a perspective view showing an example of a SUS mesh used in the prepreg of FIG.

FIG. 3 is a cross-sectional view showing a ski pole provided with a reinforcing layer made of the SUS mesh reinforced prepreg of the present invention.

FIG. 4 is an explanatory diagram showing a test method for examining damage resistance of the ski pole of FIG.

FIG. 5 is a sectional view showing a conventional ski pole.

FIG. 6 is an explanatory view showing a method of manufacturing a ski pole.

[Explanation of symbols]

 1 SUS mesh reinforced prepreg 1'Reinforcing layer 2 SUS mesh 3 Matrix resin 4 Release paper 5 Cover film

Claims (1)

[Claims] 1. A SUS characterized in that an ultrathin SUS mesh woven with SUS wire is coated with a matrix resin.
Mesh reinforced prepreg.