CN110551392A - Preparation method of carbon fiber PA66 thermoplastic composite material - Google Patents
Preparation method of carbon fiber PA66 thermoplastic composite material Download PDFInfo
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- CN110551392A CN110551392A CN201910900116.3A CN201910900116A CN110551392A CN 110551392 A CN110551392 A CN 110551392A CN 201910900116 A CN201910900116 A CN 201910900116A CN 110551392 A CN110551392 A CN 110551392A
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- carbon fiber
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- composite material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a thermoplastic composite material, in particular to a preparation method of a carbon fiber PA66 thermoplastic composite material. The invention provides the following technical scheme: a preparation method of a carbon fiber PA66 thermoplastic composite material selects a substrate PA66, carbon fiber and an auxiliary agent as preparation raw materials; the method comprises the following steps: a. modifying a base material PA66 by a modifier, wherein the modifier comprises 20-25% of polyether sulfone, 20-35% of ultra-high molecular fiber, 25-30% of a wear-resisting agent, 5-15% of a lubricant, 2-5% of a stabilizer and 5-10% of an antioxidant; b. mixing and stirring the PA6 base material, the carbon fiber and the auxiliary agent; c. c, putting the materials mixed and stirred in the step b into granulation equipment for granulation; d. and (4) putting the granulated granules into an injection molding machine for injection molding. By adopting the technical scheme, the preparation method of the carbon fiber PA66 thermoplastic composite material with stable mechanical strength is provided.
Description
Technical Field
The invention relates to a thermoplastic composite material, in particular to a preparation method of a carbon fiber PA66 thermoplastic composite material.
Background
an important branch of the carbon fiber PA66 thermoplastic composite material is that the application and production of the material are gradually expanded in recent years due to the excellent performance of the material.
However, the PA66 nylon material has the disadvantages of high water absorption rate, large shrinkage rate and the like, and the excellent mechanical strength and dimensional stability of the nylon material after water absorption are seriously influenced, so that the application range of the nylon material in the aspects of precision parts and the like is limited.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a preparation method of a carbon fiber PA66 thermoplastic composite material with stable mechanical strength.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a carbon fiber PA66 thermoplastic composite material selects a substrate PA66, carbon fiber and an auxiliary agent as preparation raw materials; the method is characterized by comprising the following steps: a. modifying a base material PA66 by a modifier, wherein the modifier comprises 20-25% of polyether sulfone, 20-35% of ultra-high molecular fiber, 25-30% of a wear-resisting agent, 5-15% of a lubricant, 2-5% of a stabilizer and 5-10% of an antioxidant; b. mixing and stirring the PA6 base material, the carbon fiber and the auxiliary agent; c. c, putting the materials mixed and stirred in the step b into granulation equipment for granulation; d. and (4) putting the granulated granules into an injection molding machine for injection molding.
Wherein the auxiliary agent comprises conductive particles, an ultraviolet absorbent, a flame retardant and a toughening agent.
The ultrahigh molecular fiber comprises 30-40 wt% of polypropylene fiber and 60-70 wt% of polylactic acid fiber.
The wear-resisting agent is one of bis- (3-triethoxysilylpropyl) -tetrasulfide and ethylene-chlorotrifluoroethylene copolymer.
The lubricant comprises capric acid and 60-70 wt% of molybdenum disulfide.
The carbon fiber bundle has a tensile modulus of more than 800GPa and a thermal conductivity of more than 300W/(mK).
The stabilizer comprises 60-70 wt% of trimethyl antimony and 30-40 wt% of mesoporous crotonic acid vinegar.
The antioxidant comprises 50-60 wt% of chlorocarbon-50 and 40-50 wt% of diisooctyl molybdenum dithiophosphate.
By adopting the technical scheme, the mechanical property of the PA66 base material is improved through the modification of the modifier, so that the mechanical property of the processed carbon fiber PA66 thermoplastic composite material is improved. The polyether sulfone has heat resistance and water resistance, and the wear resistance of PA66 is improved by the wear-resistant agent, so that the mechanical property of the PA66 is improved; the lubricant can promote the polymers to form good compatibility, and plays a role in reducing the cohesion among the polymer molecules in the polymers, thereby improving the internal friction heat generation of the plastic melt and the fluidity of the melt and reducing the friction; the antioxidant can improve the oxidation resistance of the surface of the PA66, simultaneously increase the mobility of polymer molecular chains, reduce the crystallinity of the polymer molecular chains, namely increase the plasticity of the polymer, and the characteristics are that the hardness, the modulus, the softening temperature and the brittle temperature of the polymer are reduced, and the elongation, the flexibility and the flexibility are improved.
Detailed Description
The invention relates to a preparation method of a carbon fiber PA66 thermoplastic composite material, which selects a substrate PA66, carbon fiber and an auxiliary agent as preparation raw materials; the method is characterized by comprising the following steps: a. modifying a base material PA66 by a modifier, wherein the modifier comprises 20-25% of polyether sulfone, 20-35% of ultra-high molecular fiber, 25-30% of a wear-resisting agent, 5-15% of a lubricant, 2-5% of a stabilizer and 5-10% of an antioxidant; b. mixing and stirring the PA6 base material, the carbon fiber and the auxiliary agent; c. c, putting the materials mixed and stirred in the step b into granulation equipment for granulation; d. and (4) putting the granulated granules into an injection molding machine for injection molding. Wherein the auxiliary agent comprises conductive particles, an ultraviolet absorbent, a flame retardant and a toughening agent.
In the embodiment of the invention, the ultrahigh molecular fiber comprises 30-40 wt% of polypropylene fiber and 60-70 wt% of polylactic acid fiber. The wear-resisting agent is one of bis- (3-triethoxysilylpropyl) -tetrasulfide and ethylene-chlorotrifluoroethylene copolymer. The lubricant comprises capric acid and 60-70 wt% of molybdenum disulfide. The carbon fiber bundle has a tensile modulus of more than 800GPa and a thermal conductivity of more than 300W/(mK). The stabilizer comprises 60-70 wt% of trimethyl antimony and 30-40 wt% of mesoporous crotonic acid vinegar. The antioxidant comprises 50-60 wt% of chlorocarbon-50 and 40-50 wt% of diisooctyl molybdenum dithiophosphate.
according to the invention, the mechanical property of the PA66 base material is improved through modification of the modifier, so that the mechanical property of the processed carbon fiber PA66 thermoplastic composite material is improved. The polyether sulfone has heat resistance and water resistance, and the wear resistance of PA66 is improved by the wear-resistant agent, so that the mechanical property of the PA66 is improved; the lubricant can promote the polymers to form good compatibility, and plays a role in reducing the cohesion among the polymer molecules in the polymers, thereby improving the internal friction heat generation of the plastic melt and the fluidity of the melt and reducing the friction; the antioxidant can improve the oxidation resistance of the surface of the PA66, simultaneously increase the mobility of polymer molecular chains, reduce the crystallinity of the polymer molecular chains, namely increase the plasticity of the polymer, and the characteristics are that the hardness, the modulus, the softening temperature and the brittle temperature of the polymer are reduced, and the elongation, the flexibility and the flexibility are improved.
Claims (8)
1. A preparation method of a carbon fiber PA66 thermoplastic composite material selects a substrate PA66, carbon fiber and an auxiliary agent as preparation raw materials; the method is characterized by comprising the following steps:
a. Modifying a base material PA66 by a modifier, wherein the modifier comprises 20-25% of polyether sulfone, 20-35% of ultra-high molecular fiber, 25-30% of a wear-resisting agent, 5-15% of a lubricant, 2-5% of a stabilizer and 5-10% of an antioxidant;
b. Mixing and stirring the PA6 base material, the carbon fiber and the auxiliary agent;
c. C, putting the materials mixed and stirred in the step b into granulation equipment for granulation;
d. And (4) putting the granulated granules into an injection molding machine for injection molding.
2. The method for preparing a carbon fiber PA66 thermoplastic composite material according to claim 1, wherein: the auxiliary agent comprises conductive particles, an ultraviolet absorbent, a flame retardant and a toughening agent.
3. The process for the preparation of carbon fiber PA66 thermoplastic composite according to claim 1 or 2, characterized in that: the ultrahigh molecular fiber comprises 30-40 wt% of polypropylene fiber and 60-70 wt% of polylactic acid fiber.
4. The process for the preparation of carbon fiber PA66 thermoplastic composite according to claim 1 or 2, characterized in that: the wear-resisting agent is selected from one of bis- (3-triethoxysilylpropyl) -tetrasulfide and ethylene-chlorotrifluoroethylene copolymer.
5. The process for the preparation of carbon fiber PA66 thermoplastic composite according to claim 1 or 2, characterized in that: the lubricant comprises capric acid and 60-70 wt% of molybdenum disulfide.
6. the process for the preparation of carbon fiber PA66 thermoplastic composite according to claim 1 or 2, characterized in that: the carbon fiber bundle has a tensile modulus of more than 800GPa and a thermal conductivity of more than 300W/(mK).
7. The process for the preparation of carbon fiber PA66 thermoplastic composite according to claim 1 or 2, characterized in that: the stabilizer comprises 60-70 wt% of trimethyl antimony and 30-40 wt% of mesoporous crotonic acid vinegar.
8. The process for the preparation of carbon fiber PA66 thermoplastic composite according to claim 1 or 2, characterized in that: the antioxidant comprises 50-60 wt% of chlorocarbon-50 and 40-50 wt% of diisooctyl molybdenum dithiophosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910900116.3A CN110551392A (en) | 2019-09-23 | 2019-09-23 | Preparation method of carbon fiber PA66 thermoplastic composite material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910900116.3A CN110551392A (en) | 2019-09-23 | 2019-09-23 | Preparation method of carbon fiber PA66 thermoplastic composite material |
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| CN110551392A true CN110551392A (en) | 2019-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116200036A (en) * | 2023-04-04 | 2023-06-02 | 江苏林泉汽车装饰件有限公司 | Automobile interior trim part material with high heat resistance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311851A (en) * | 2011-08-12 | 2012-01-11 | 天津市金海利油脂有限公司 | Wire drawing lubricant for automatic steel and preparation method thereof |
| CN102952327A (en) * | 2011-08-25 | 2013-03-06 | 上海杰事杰新材料(集团)股份有限公司 | Resin composite material and its preparation method and use |
| CN109206900A (en) * | 2018-09-04 | 2019-01-15 | 安徽旭升新材料有限公司 | Carbon fiber PA66 thermoplastic composite weeder capacitance shell |
| CN109796758A (en) * | 2019-01-31 | 2019-05-24 | 中平神马江苏新材料科技有限公司 | A kind of PA66 modified material and preparation method thereof that stability is good |
-
2019
- 2019-09-23 CN CN201910900116.3A patent/CN110551392A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311851A (en) * | 2011-08-12 | 2012-01-11 | 天津市金海利油脂有限公司 | Wire drawing lubricant for automatic steel and preparation method thereof |
| CN102952327A (en) * | 2011-08-25 | 2013-03-06 | 上海杰事杰新材料(集团)股份有限公司 | Resin composite material and its preparation method and use |
| CN109206900A (en) * | 2018-09-04 | 2019-01-15 | 安徽旭升新材料有限公司 | Carbon fiber PA66 thermoplastic composite weeder capacitance shell |
| CN109796758A (en) * | 2019-01-31 | 2019-05-24 | 中平神马江苏新材料科技有限公司 | A kind of PA66 modified material and preparation method thereof that stability is good |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116200036A (en) * | 2023-04-04 | 2023-06-02 | 江苏林泉汽车装饰件有限公司 | Automobile interior trim part material with high heat resistance |
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Application publication date: 20191210 |