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A kind of preparation method of carbon fiber composite material for ⅳ type gas cylinder

A composite material and carbon fiber technology, applied in the field of composite materials, can solve the problems of low elongation at break, long molding cycle and high curing temperature, and achieve the effects of improving processing performance, reducing viscosity and improving toughness

Active Publication Date: 2021-06-08
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention selects high-performance epoxy resin as the main resin, based on the ultra-fine mixing principle of planetary vacuum stirring, and toughens and modifies the main resin to obtain an epoxy resin prepolymer, which effectively improves the toughness of the resin matrix ;The viscosity of the resin matrix is ​​reduced by adding a reactive diluent, and the processing performance of the resin matrix is ​​improved; low-viscosity cardanol modified amine curing agent and imidazole ionic liquid accelerator are used to adjust the pot life and curing reactivity of the resin system , to further adjust the rigidity and crosslinking density distribution of the resin system to improve the comprehensive performance of the resin matrix; by adjusting the mix ratio between the main resin, reactive diluent, toughener, curing agent and accelerator, a low Viscosity, high toughness, rapid curing at medium and low temperatures (160°C), excellent comprehensive mechanical properties, high-performance resin matrix for type IV composite gas cylinders suitable for microwave rapid curing, It solves the problems of low elongation at break, poor toughness, high curing temperature, and long molding cycle of the current resin system for composite gas cylinders.

Method used

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  • A kind of preparation method of carbon fiber composite material for ⅳ type gas cylinder
  • A kind of preparation method of carbon fiber composite material for ⅳ type gas cylinder
  • A kind of preparation method of carbon fiber composite material for ⅳ type gas cylinder

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Effect test

Embodiment 1

[0019] The main resin adopts multifunctional alicyclic epoxy resin EHPE3150, the toughened and modified resin prepolymer adopts multifunctional alicyclic epoxy resin EHPE3150 modified by carboxyl-terminated hyperbranched polyester HyPer C203, and the reactive diluent adopts Phenyl glycidyl ether 690; low-viscosity cardanol-modified amine curing agent uses cardanol-modified isophorone diamine, aldehyde uses paraformaldehyde; accelerator uses 1-hexyl-2,3-dimethylimidazole Hexafluorophosphate, carbon fiber adopts T700 carbon fiber from Japan Toray Company. The ratio of mass parts of main resin, resin prepolymer, reactive diluent, low-viscosity cardanol-modified amine curing agent and accelerator is 100:10:20:30:3. The preparation process is as follows: Firstly, the polyfunctional cycloaliphatic epoxy resin EHPE3150 and the carboxyl-terminated hyperbranched polyester HyPer C203 are added to the planetary vacuum mixer at a ratio of 100:15 by weight, the temperature is 100°C, and th...

Embodiment 2

[0024] The main resin is imide epoxy resin AS501, the toughened and modified resin prepolymer is imide epoxy resin AS501 modified by carboxyl-terminated hyperbranched polymer HPAE-C, and the reactive diluent is benzyl glycidyl ether NXA-692; low-viscosity cardanol-modified amine curing agent uses cardanol-modified menthane diamine, aldehyde uses furan formaldehyde; accelerator uses 1-hexyl-2,3-dimethylimidazolium tetrafluoroborate, The carbon fiber adopts T700 carbon fiber from Japan Toray Company. The ratio of mass parts of main resin, resin prepolymer, reactive diluent, low-viscosity cardanol-modified amine curing agent and accelerator is 100:15:30:40:5. The preparation process is as follows: First, the imide epoxy resin AS501 and the carboxyl-terminated hyperbranched polymer HPAE-C are added to the planetary vacuum mixer at a ratio of mass and number of 100:20, the temperature is 110°C, and the stirring revolution rate is 45r / min. The rotation rate is 450r / min, the vacuum ...

Embodiment 3

[0029] The main resin is multifunctional hydantoin epoxy resin MHR-070, and the toughened and modified resin prepolymer is multifunctional hydantoin epoxy resin MHR-070 modified by carboxyl-terminated hyperbranched polyester HyPer C203. The agent uses phenyl glycidyl ether G830179; the low-viscosity cardanol-modified amine curing agent uses cardanol-modified polyamide 651, and the aldehyde uses paraformaldehyde; the accelerator uses 1-hexyl-2,3-dimethylimidazole six Fluorophosphate, carbon fiber adopts T700 carbon fiber from Japan Toray Company. The ratio of mass parts of main resin, resin prepolymer, reactive diluent, low-viscosity cardanol-modified amine curing agent and accelerator is 100:25:40:50:8. The preparation process is as follows: Firstly, the multifunctional hydantoin epoxy resin MHR-070 and the carboxyl-terminated hyperbranched polyester HyPer C203 are added to the planetary vacuum mixer at a ratio of 100:30 by weight, the temperature is 120°C, and the stirring re...

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Abstract

The invention relates to a high-performance resin matrix for type IV composite gas cylinders and a preparation method thereof. Based on the ultra-fine mixing principle of planetary vacuum stirring, the epoxy resin prepolymer is obtained by toughening and modifying the main resin, which effectively improves the toughness of the resin matrix; the viscosity of the resin matrix is ​​reduced by adding an active diluent, and the The processing performance of the resin matrix is ​​improved; low-viscosity cardanol modified amine curing agent and imidazole ionic liquid accelerator are used to adjust the pot life and curing reactivity of the resin system, and further control the rigidity, toughness and crosslinking density distribution of the resin system. Improve the overall performance of the resin matrix; by adjusting the proportion of the main resin, reactive diluent, toughening component, curing agent and accelerator, a low viscosity, high toughness, fast curing at medium and low temperature, heat resistance The high-performance resin matrix for type IV composite gas cylinders with excellent performance and excellent comprehensive mechanical properties solves the problems of low elongation at break, poor toughness, high curing temperature, and long molding cycle of the current resin system for composite gas cylinders.

Description

technical field [0001] The invention belongs to the field of composite materials, and mainly relates to a high-performance resin matrix for type IV composite gas cylinders and a preparation method thereof. Background technique [0002] Due to their high strength, high modulus, and light weight, carbon fiber reinforced resin-based composite materials have important applications in cutting-edge defense fields such as aerospace and petrochemical industries, especially in pressure vessels represented by gas cylinders. application is even faster. In recent years, with the development of new energy vehicles represented by hydrogen energy, foreign 70MPa hydrogen storage composite gas cylinders have entered the demonstration and use stage. Both the United States and Canada have successfully developed 70MPa vehicle-mounted fiber-wound high-pressure hydrogen cylinders, which are in the leading position in the world. They have also innovatively developed the fourth-generation composit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K7/06C08J5/04B29C70/34B29C35/08C08G59/62C08G59/68C08G14/073
CPCB29C35/08B29C70/34B29C2035/0855C08G14/06C08G59/62C08G59/686C08G59/688C08J5/042C08L63/00C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L2205/06C08L2312/00C08K7/06
Inventor 贾晓龙齐鹏飞黎何丰罗锦涛燕吉强还献华杨小平
Owner BEIJING UNIV OF CHEM TECH