High-tenacity and low-temperature-resistance resin matrix and preparation method thereof

A technology of resin matrix and low temperature resistance. It is applied in the field of carbon fiber resin matrix composite materials. It can solve the problems of insufficient low temperature resistance and unsuitable process characteristics, and achieve the effects of improved low temperature resistance, long service life and improved mechanical properties.

Active Publication Date: 2017-03-29
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By synthesizing the toughening component, curing agent, modified nanoparticle component and adjusting the mix ratio among the main resin, toughening component, nanoparticle component, diluent, curing agent and accelerator, a durable Good low temperature resistance, excellent comprehensive mechanical properties, suitable viscosity, wet winding and other liquid molding processes, and a resin system with a long pot life solve the limitations of traditional epoxy resins that have insufficient low temperature resistance and process characteristics that are not suitable for winding and other liquid molding processes

Method used

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  • High-tenacity and low-temperature-resistance resin matrix and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] The main epoxy resin is cycloaliphatic bis(7-oxabicyclo[4.1.0]3-heptylmethyl adipate) (UVR6128), the toughening component is polyurethane-epoxy resin, and the nanoparticles are carboxyl functional 1,6-hexanediol diglycidyl ether X-652 is used as diluent, and alicyclic amine 3,3′-dimethyl 4,4′-diaminodicyclohexyl is used as curing agent Methane (DMDC), the accelerator uses 2-ethyl-4-methylimidazole, and the carbon fiber uses T700 from Toray Corporation of Japan. The mass ratio of the main epoxy resin, the toughening component, the nanoparticles, the diluent, the curing agent and the accelerator is 100:150:0.5:230:110:0.8. The preparation process is as follows: dehydrate and dry the polyol at 120°C for 3 hours, then cool to 50°C and add isocyanate at a rate of 3mL / min. Mix evenly under the condition of 10 minutes, then react in nitrogen atmosphere under the conditions of oil bath temperature 70°C, stirring speed 800 rpm, time 120 minutes, the reaction is terminated when ...

Embodiment 2

[0029] The main epoxy resin is 1,3-diglycidyl-5,5-dimethylhydantoin epoxy resin (DMH-EP), the toughening component is polyurethane-epoxy resin, and the nanoparticles are functionalized with carboxyl groups The multi-walled carbon nanotubes and diluent adopt glycidyl ether type epoxy resin 662, and the curing agent adopts alicyclic amine 3,3'-dimethyl 4,4'-diaminodicyclohexylmethane (DMDC) and polyether The compound of amine D-230, the accelerator uses 2-ethyl-4-methylimidazole, and the carbon fiber uses T700 from Toray Corporation of Japan. The mass ratio of the main epoxy resin, the toughening component, the nanoparticles, the diluent, the curing agent and the accelerator is 100:120:0.5:150:170:1. The preparation process is as follows: dehydrate and dry the polyol at 120°C for 3 hours, then cool to 50°C and add isocyanate at a rate of 3mL / min. Mix evenly under the condition of 10 minutes, then react in nitrogen atmosphere under the conditions of oil bath temperature 70°C, st...

Embodiment 3

[0032] The main epoxy resin is hydantoin-bisphenol A epoxy resin (DMH-BPA-EP), the toughening component is polyurethane-epoxy resin, the nanoparticles are carboxyl-functionalized graphene oxide, and the diluent is glycidyl ether. Type epoxy resin 662, polyetheramine D-230 is used as curing agent, 2,4,6-tris(dimethylaminomethyl)phenol is used as accelerator, and T700 is used as carbon fiber from Japan Toray Company. The mass ratio of the main epoxy resin, the toughening component, the diluent, the curing agent and the accelerator is 100:130:0.5:120:120:4. The preparation process is as follows: dehydrate and dry the polyol at 120°C for 3 hours, then cool to 50°C and add isocyanate at a rate of 3mL / min. Mix evenly under the condition of 10 minutes, then react in nitrogen atmosphere under the conditions of oil bath temperature 70°C, stirring speed 800 rpm, time 120 minutes, the reaction is terminated when the content of isocyanate is controlled at 1%-2%, and the polyurethane prepo...

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Abstract

The invention discloses a high-tenacity and low-temperature-resistance resin matrix and a preparation method thereof. The resin matrix comprises main body resin (epoxy resin), toughening components (epoxy resin modified by engineering plastics such as polyurethane), a curing agent, nano-components (nano-particles such as modified carbon nano-tubes, graphene and montmorillonite) and other processing agents such as an active diluent and an accelerant. By synthesizing the toughening components, the curing agent and the modified nano-particle components and regulating the cooperation ratio of the main body resin to the toughening components to the nano-particle components to the diluent to the curing agent to the accelerant, the resin matrix which is good in low temperature resistance, excellent in comprehensive mechanical property, proper in viscosity and long in working life and meets liquid formation process requirements such as wet process winding is prepared, the limitation that the poor low temperature resistance and process property of the traditional epoxy resin are not suitable for liquid formation such as wet process winding is solved, and a great guiding significance is provided for preparation of low-temperature-resistance resin composite materials.

Description

technical field [0001] The invention relates to the field of carbon fiber resin-based composite materials, and mainly relates to a high-toughness, low-temperature-resistant, low-viscosity resin matrix suitable for a liquid molding process and a preparation method thereof. Background technique [0002] Carbon fiber resin matrix composites have excellent mechanical properties such as high strength, high modulus, and light weight, and have been widely used in recent years. With the rapid development of technologies in the fields of natural gas storage cylinders, breathing devices, hydrogen fuel cell storage tanks, and aerospace vehicles, higher requirements are placed on the comprehensive performance of carbon fiber resin-based composite materials, especially the improvement of low temperature resistance has become the current carbon fiber The urgent need for composite materials in high-end applications also requires that the resin used as the matrix must have excellent low tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L75/04C08K13/06C08K9/00C08K7/24C08K3/04C08K3/34C08G18/65C08G18/58C08G18/32C08G18/10
CPCC08G18/10C08G18/58C08K2201/011C08L63/00C08L75/04C08K13/06C08K9/00C08K7/24C08K3/04C08K3/346C08G18/6517
Inventor 贾晓龙张飞王润亭贾丽颖杨小平
Owner BEIJING UNIV OF CHEM TECH
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