CN109749393A - A kind of wear-resistant polycarbonate material and preparation method thereof - Google Patents
A kind of wear-resistant polycarbonate material and preparation method thereof Download PDFInfo
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- CN109749393A CN109749393A CN201811616557.2A CN201811616557A CN109749393A CN 109749393 A CN109749393 A CN 109749393A CN 201811616557 A CN201811616557 A CN 201811616557A CN 109749393 A CN109749393 A CN 109749393A
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- silicon powder
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- polycarbonate material
- resistant polycarbonate
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- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 40
- 239000004417 polycarbonate Substances 0.000 title claims abstract description 40
- 239000000463 material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 34
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 14
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims abstract description 13
- 239000003381 stabilizer Substances 0.000 claims abstract description 13
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims abstract description 10
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000005642 Oleic acid Substances 0.000 claims abstract description 10
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004952 Polyamide Substances 0.000 claims abstract description 10
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims abstract description 10
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920002647 polyamide Polymers 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims abstract description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 54
- 238000003756 stirring Methods 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 4
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 4
- 229960004756 ethanol Drugs 0.000 claims description 4
- 235000019441 ethanol Nutrition 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 4
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical class C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 229940049964 oleate Drugs 0.000 abstract description 3
- NDERRIHSWCOMJJ-UHFFFAOYSA-N C(C(=C)C)(=O)OC(C1=CC=CC=C1)(C1=CC=CC=C1)C1=CC=CC=C1.P(=O)(O)(O)O Chemical compound C(C(=C)C)(=O)OC(C1=CC=CC=C1)(C1=CC=CC=C1)C1=CC=CC=C1.P(=O)(O)(O)O NDERRIHSWCOMJJ-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 3
- 150000003376 silicon Chemical class 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical group CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a kind of wear-resistant polycarbonate materials, it is composed of the following raw materials by weight: trimethylolpropane 6-9, oleic acid 10-13, silicon powder 20-30, tert-butyl is to biphenol 0.8-1, heat-resisting stabilizing agent 1-2, polyamide wax micropowder 5-7, triphenyl phosphate 3-4, catalyst 0.01-0.02, polycarbonate 110-140, the present invention can not only improve the surface-active of silicon powder after handling by this method, it reduces and reunites, improve the mechanical stability of finished-product material, and obtained oleate, there are good Synergistic Antiwear Properties again with the silicon powder of doping phosphoric acid triphenylmethyl methacrylate.
Description
Technical field
The invention belongs to Material Fields, and in particular to a kind of wear-resistant polycarbonate material and preparation method thereof.
Background technique
Polycarbonate is the high molecular polymer in strand containing carbonate group, can be divided into fat according to the structure of ester group
The multiple types such as race, aromatic series, aliphatic-aromatic.Wherein due to the machinery of aliphatic and aliphatic-aromatic polycarbonate
Performance is lower, to limit its application in terms of engineering plastics.Polycarbonate is colorless and transparent, heat-resisting, shock resistance, fire-retardant BI
Grade, there is good mechanical performance in commonly used temperature.With performance close to compared with polymethyl methacrylate, polycarbonate
Impact resistance it is good, refractive index is high, and processing performance is good, and not needing additive just has V-0 grades of flame retardant properties of UL94.But
Polymethyl methacrylate is lower with respect to polycarbonate price, and large-scale device can be produced by the method for bulk polymerization；Together
When, polyester resin tool is high-intensitive and coefficient of elasticity, high impact, use temperature range are wide；With heigh clarity and freedom
Dyeability；Shaping shrinkage rate is low, dimensional stability is good；Fatigue durability is poor；Weatherability is good；Electrical characteristic is excellent；It is tasteless odorless right
Human body is harmless meet it is safe and healthy；
However, polycarbonate wears no resistance, some polycarbonate devices for purposes easy to wear need to carry out surface special
Different processing, and it is comparatively laborious by the way of surface treatment, therefore, seem if improving its greasy property from material itself
It is especially necessary.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of wear-resistant polycarbonate material and its
Preparation method.
To achieve the above object, the invention adopts the following technical scheme:
A kind of wear-resistant polycarbonate material, it is composed of the following raw materials by weight:
Trimethylolpropane 6-9, oleic acid 10-13, silicon powder 20-30, tert-butyl to biphenol 0.8-1, heat-resisting stabilizing agent 1-2,
Polyamide wax micropowder 5-7, triphenyl phosphate 3-4, catalyst 0.01-0.02, polycarbonate 110-140.
The catalyst is p-methyl benzenesulfonic acid.
The heat-resisting stabilizing agent is stearate, dibutyl tin dilaurate.
A kind of preparation method of wear-resistant polycarbonate material, comprising the following steps:
(1) trimethylolpropane is taken, is added in the dehydrated alcohol of 20-30 times of its weight, stirs evenly, silicon powder is added, is risen
High-temperature is 60-70 DEG C, insulated and stirred 1-2 hours, ethyl alcohol is distilled off, air drying obtains activation silicon powder；
(2) polyamide wax micropowder is taken, is added in the toluene of 10-17 times of its weight, stirs evenly, is sent to 80-85 DEG C of perseverance
In tepidarium, insulated and stirred 30-40 minutes, discharging cooling obtained toluene solution；
(3) oleic acid is taken, is added in above-mentioned toluene solution, stirs evenly, be sent in reaction kettle, is passed through nitrogen, is added above-mentioned
Silicon powder is activated, adjusting temperature of reaction kettle is 90-96 DEG C, catalyst is added, insulated and stirred 3-4 hours, discharging cooling obtained modification
Silicon powder solution；
(4) triphenyl phosphate is taken, is added in above-mentioned modified silicon powder solution, stirs evenly, the insulated and stirred 1- at 60-70 DEG C
It 2 hours, discharges, revolving removes toluene, obtains triphenyl phosphate and adulterates wear-resisting silicon powder；
(5) it takes above-mentioned triphenyl phosphate to adulterate wear-resisting silicon powder, mixes, stir evenly with heat-resisting stabilizing agent, polycarbonate, be sent into
Into extruder, melting extrusion is cooling to get the wear-resistant polycarbonate material.
Advantages of the present invention:
The present invention uses trimethylolpropane to handle silicon powder first, and then polyamide wax micropowder is distributed in toluene solution,
Using the toluene solution as solvent, oleic acid is blended with the silicon powder of activation, reacts under the action of catalyst, it is micro- to obtain modified silicon
Then powder is adulterated by triphenyl phosphate again, cooperate with wear resistence well to be formed with oleate, silicon powder, enhance finished product
Abrasion resistant effect, the present invention can not only improve the surface-active of silicon powder, reduce and reunite after handling by this method, improve at
The mechanical stability of product material, and obtained oleate have good cooperate with the silicon powder of doping phosphoric acid triphenylmethyl methacrylate again
Abrasion resistance.
Specific embodiment [0009] embodiment 1
A kind of wear-resistant polycarbonate material, it is composed of the following raw materials by weight:
Trimethylolpropane 9, oleic acid 13, silicon powder 30, tert-butyl are to biphenol 1, heat-resisting stabilizing agent 2, polyamide wax micropowder 5-
7, triphenyl phosphate 4, catalyst 0.02, polycarbonate 140.
The catalyst is p-methyl benzenesulfonic acid.
The heat-resisting stabilizing agent is dibutyl tin dilaurate.
A kind of preparation method of wear-resistant polycarbonate material, comprising the following steps:
(1) trimethylolpropane is taken, is added in the dehydrated alcohol of 30 times of its weight, stirs evenly, silicon powder is added, increases temperature
Degree is 70 DEG C, insulated and stirred 2 hours, ethyl alcohol is distilled off, air drying obtains activation silicon powder；
(2) polyamide wax micropowder is taken, is added in the toluene of 17 times of its weight, stirs evenly, be sent to 80-85 DEG C of thermostatted water
In bath, insulated and stirred 40 minutes, discharging cooling obtained toluene solution；
(3) oleic acid is taken, is added in above-mentioned toluene solution, stirs evenly, be sent in reaction kettle, is passed through nitrogen, is added above-mentioned
Silicon powder is activated, adjusting temperature of reaction kettle is 96 DEG C, catalyst is added, insulated and stirred 4 hours, it is micro- to obtain modified silicon for discharging cooling
Powder solution；
(4) triphenyl phosphate is taken, is added in above-mentioned modified silicon powder solution, stirs evenly, insulated and stirred 2 is small at 70 DEG C
When, it discharges, revolving removes toluene, obtains triphenyl phosphate and adulterates wear-resisting silicon powder；
(5) it takes above-mentioned triphenyl phosphate to adulterate wear-resisting silicon powder, mixes, stir evenly with heat-resisting stabilizing agent, polycarbonate, be sent into
Into extruder, melting extrusion is cooling to get the wear-resistant polycarbonate material.
Embodiment 2
A kind of wear-resistant polycarbonate material, it is composed of the following raw materials by weight:
Trimethylolpropane 6, oleic acid 10, silicon powder 20, tert-butyl are to biphenol 0.8, heat-resisting stabilizing agent 1, polyamide wax micropowder
5, triphenyl phosphate 3, catalyst 0.01, polycarbonate 110.
The catalyst is p-methyl benzenesulfonic acid.
The heat-resisting stabilizing agent is stearate.
A kind of preparation method of wear-resistant polycarbonate material, comprising the following steps:
(1) trimethylolpropane is taken, is added in the dehydrated alcohol of 20 times of its weight, stirs evenly, silicon powder is added, increases temperature
Degree is 60 DEG C, insulated and stirred 1 hour, ethyl alcohol is distilled off, air drying obtains activation silicon powder；
(2) polyamide wax micropowder is taken, is added in the toluene of 10 times of its weight, stirs evenly, be sent to 80 DEG C of water bath with thermostatic control
In, insulated and stirred 30 minutes, discharging cooling obtained toluene solution；
(3) oleic acid is taken, is added in above-mentioned toluene solution, stirs evenly, be sent in reaction kettle, is passed through nitrogen, is added above-mentioned
Silicon powder is activated, adjusting temperature of reaction kettle is 90 DEG C, catalyst is added, insulated and stirred 3 hours, it is micro- to obtain modified silicon for discharging cooling
Powder solution；
(4) triphenyl phosphate is taken, is added in above-mentioned modified silicon powder solution, stirs evenly, the insulated and stirred hour at 60 DEG C,
Discharging, revolving remove toluene, obtain triphenyl phosphate and adulterate wear-resisting silicon powder；
(5) it takes above-mentioned triphenyl phosphate to adulterate wear-resisting silicon powder, mixes, stir evenly with heat-resisting stabilizing agent, polycarbonate, be sent into
Into extruder, melting extrusion is cooling to get the wear-resistant polycarbonate material.
Contrast properties test:
The nano silica for taking 20 parts by weight, mixes with the polycarbonate of 110 parts by weight, stirs evenly, and melting extrusion is made
Grain.
Wear hardness test:
The Akron abrasion of the wear-resistant polycarbonate material of the embodiment of the present invention 1 is 0.011cm3/1.61km；
The Akron abrasion of the wear-resistant polycarbonate material of the embodiment of the present invention 2 is 0.012cm3/1.61km；
The Akron abrasion of the finished-product material of contrast properties is 0.069cm3/1.61km。
The wear-resistant polycarbonate material of embodiment 1:
Tensile strength test is carried out according to ASTM D638/ISO 527:
It as a result is 89Mpa；
Carry out elongation at break test:
It as a result is 117%；
Bending strength test is carried out according to ASTM D790/ISO 178:
It as a result is 119Mpa.
The wear-resistant polycarbonate material of embodiment 2:
Tensile strength test is carried out according to ASTM D638/ISO 527:
It as a result is 91Mpa；
Carry out elongation at break test:
It as a result is 113%；
Bending strength test is carried out according to ASTM D790/ISO 178:
It as a result is 116 Mpa.
Claims (4)
1. a kind of wear-resistant polycarbonate material, which is characterized in that it is composed of the following raw materials by weight:
Trimethylolpropane 6-9, oleic acid 10-13, silicon powder 20-30, tert-butyl to biphenol 0.8-1, heat-resisting stabilizing agent 1-2,
Polyamide wax micropowder 5-7, triphenyl phosphate 3-4, catalyst 0.01-0.02, polycarbonate 110-140.
2. a kind of wear-resistant polycarbonate material according to claim 1, which is characterized in that the catalyst is to methyl
Benzene sulfonic acid.
3. a kind of wear-resistant polycarbonate material according to claim 1, which is characterized in that the heat-resisting stabilizing agent is hard
Resin acid salt, dibutyl tin dilaurate.
4. a kind of preparation method of wear-resistant polycarbonate material as described in claim 1, which comprises the following steps:
(1) trimethylolpropane is taken, is added in the dehydrated alcohol of 20-30 times of its weight, stirs evenly, silicon powder is added, is risen
High-temperature is 60-70 DEG C, insulated and stirred 1-2 hours, ethyl alcohol is distilled off, air drying obtains activation silicon powder；
(2) polyamide wax micropowder is taken, is added in the toluene of 10-17 times of its weight, stirs evenly, is sent to 80-85 DEG C of perseverance
In tepidarium, insulated and stirred 30-40 minutes, discharging cooling obtained toluene solution；
(3) oleic acid is taken, is added in above-mentioned toluene solution, stirs evenly, be sent in reaction kettle, is passed through nitrogen, is added above-mentioned
Silicon powder is activated, adjusting temperature of reaction kettle is 90-96 DEG C, catalyst is added, insulated and stirred 3-4 hours, discharging cooling obtained modification
Silicon powder solution；
(4) triphenyl phosphate is taken, is added in above-mentioned modified silicon powder solution, stirs evenly, the insulated and stirred 1- at 60-70 DEG C
It 2 hours, discharges, revolving removes toluene, obtains triphenyl phosphate and adulterates wear-resisting silicon powder；
(5) it takes above-mentioned triphenyl phosphate to adulterate wear-resisting silicon powder, mixes, stir evenly with heat-resisting stabilizing agent, polycarbonate, be sent into
Into extruder, melting extrusion is cooling to get the wear-resistant polycarbonate material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811616557.2A CN109749393A (en) | 2018-12-28 | 2018-12-28 | A kind of wear-resistant polycarbonate material and preparation method thereof |
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| CN201811616557.2A CN109749393A (en) | 2018-12-28 | 2018-12-28 | A kind of wear-resistant polycarbonate material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679125A (en) * | 2021-01-20 | 2021-04-20 | 中建八局第二建设有限公司 | Construction waste modified silicon micropowder and preparation method thereof |
| CN115434039A (en) * | 2022-10-11 | 2022-12-06 | 安徽驰宇新材料科技有限公司 | Low-cost carbon fiber material formula |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100690977B1 (en) * | 2005-02-17 | 2007-03-09 | (주)폴리머스넷 | Thermoplastic Elastomer Composition |
| CN107573493A (en) * | 2017-09-13 | 2018-01-12 | 南通意特化工有限公司 | A kind of novel nano SiO2Modified alkyd resin |
| CN107805380A (en) * | 2017-11-30 | 2018-03-16 | 解伟伟 | A kind of formula of wear-resisting PC materials |
-
2018
- 2018-12-28 CN CN201811616557.2A patent/CN109749393A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100690977B1 (en) * | 2005-02-17 | 2007-03-09 | (주)폴리머스넷 | Thermoplastic Elastomer Composition |
| CN107573493A (en) * | 2017-09-13 | 2018-01-12 | 南通意特化工有限公司 | A kind of novel nano SiO2Modified alkyd resin |
| CN107805380A (en) * | 2017-11-30 | 2018-03-16 | 解伟伟 | A kind of formula of wear-resisting PC materials |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679125A (en) * | 2021-01-20 | 2021-04-20 | 中建八局第二建设有限公司 | Construction waste modified silicon micropowder and preparation method thereof |
| CN115434039A (en) * | 2022-10-11 | 2022-12-06 | 安徽驰宇新材料科技有限公司 | Low-cost carbon fiber material formula |
| CN115434039B (en) * | 2022-10-11 | 2023-08-11 | 安徽驰宇新材料科技有限公司 | Low-cost carbon fiber material formula |
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