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Liquid crystal epoxy resin - carbon fiber composite material and preparation method thereof

An epoxy resin and composite material technology, applied in the field of shape memory polymer material preparation, can solve problems such as high cost and weak mechanical properties, and achieve the effects of excellent performance, improved thermodynamic performance, and strong interface adhesion.

Active Publication Date: 2014-02-26
SICHUAN HUASON ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, according to the current research, the shape memory liquid crystal epoxy resin has disadvantages such as high cost and weak links in mechanical properties.

Method used

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  • Liquid crystal epoxy resin - carbon fiber composite material and preparation method thereof
  • Liquid crystal epoxy resin - carbon fiber composite material and preparation method thereof
  • Liquid crystal epoxy resin - carbon fiber composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Soak and clean the chopped carbon fibers with a length of 1 mm in dichloromethane for 100 hours, then take out the chopped carbon fibers and soak them in distilled water for 36 hours, then take out the chopped carbon fibers and dry them in vacuum at 80°C for 36 hours; the dried chopped carbon fibers Place in concentrated nitric acid and stir and reflux at 100°C for 2 hours, then reflux the obtained chopped carbon fibers with distilled water for 24 hours at 100°C, filter, wash the obtained chopped carbon fibers with water, and dry them in vacuum at 100°C for 24 hours; The dried chopped carbon fibers were placed in thionyl chloride, added catalyst dimethylformamide (DMF) and heated to reflux for 3 hours, filtered and washed with tetrahydrofuran to remove excess thionyl chloride, and the solid retentate was acyl chloride Chopped carbon fibers; then put the acid-chlorinated chopped carbon fibers into 4-dimethylaminopyridine (DMAP) containing 0.5% by mass fraction, 20% by ...

Embodiment 2

[0039] 1) Soak and clean the chopped carbon fibers with a length of 6 mm in dichloromethane for 120 hours, then take out the chopped carbon fibers and soak them in distilled water for 40 hours, then take out the chopped carbon fibers and dry them in vacuum at 90°C for 30 hours; the dried chopped carbon fibers Place in concentrated nitric acid, stir and reflux at 105°C for 1.5h, then reflux the obtained chopped carbon fibers with distilled water at 100°C for 24h, filter, wash the obtained chopped carbon fibers with water, and dry them in vacuum at 100°C for 24h; then The chopped carbon fibers after vacuum drying were placed in thionyl chloride, and the catalyst dimethylformamide (DMF) was added and heated to reflux for 3 hours, filtered and washed with tetrahydrofuran to remove excess thionyl chloride, and the solid retained product was acid chloride Chopped carbon fiber; then put the acid chlorinated chopped carbon fiber into 4-dimethylaminopyridine (DMAP) containing 0.8% by ma...

Embodiment 3

[0046] 1) Soak and clean the chopped carbon fibers with a length of 12 mm in dichloromethane for 140 hours, then take out the chopped carbon fibers and soak them in distilled water for 48 hours, then take out the chopped carbon fibers and dry them in vacuum at 100°C for 24 hours; the dried chopped carbon fibers Place in concentrated nitric acid, stir and reflux at 110°C for 1 hour, then reflux the obtained chopped carbon fibers with distilled water at 100°C for 24 hours, filter, wash the obtained chopped carbon fibers with water, and dry them under vacuum at 100°C for 24 hours; The dried chopped carbon fibers were placed in thionyl chloride, added catalyst dimethylformamide (DMF) and heated to reflux for 3 hours, filtered and washed with tetrahydrofuran to remove excess thionyl chloride, and the solid retentate was acyl chloride Chopped carbon fibers; then put the acid-chlorinated chopped carbon fibers into 4-dimethylaminopyridine (DMAP) containing 1% by mass fraction, 30% by m...

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Abstract

The invention belongs to the preparation field of shape memory polymers, specifically discloses a liquid crystal epoxy resin-carbon fiber composite material with shape memory properties and a preparation method thereof. The preparation method of the liquid crystal epoxy resin-carbon fiber composite material comprises three steps: (1) carbon fiber surface treatment; (2) composite material mixture preparation; and (3) curing for forming. According to the preparation method, carbon fiber is used for modifying of liquid crystal epoxy resin with branched chains, the cost can be reduced, and the thermodynamic properties of the material can be improved; and the liquid crystal epoxy resin-carbon fiber composite material prepared by the preparation method has the shape memory property, is high in response rate, is high in recovery stress, and can be applied to the technical field of biomedicine, aerospace and other sciences.

Description

technical field [0001] The invention belongs to the field of preparation of shape-memory polymer materials, and in particular relates to a preparation method of a liquid crystal epoxy resin-carbon fiber composite material. Background technique [0002] The emergence of shape memory materials is a major leap in the history of material science in this century. It reveals the inherent special nature of materials and provides a new way for the innovation of material processing technology and the development of new products. Since the discovery of Ni-Ti shape memory alloy in 1964, shape memory materials have attracted widespread attention from all over the world and have made great progress. Since the 1980s, the shape-memory polymer material, which has sprung up suddenly, has become an attractive and popular material due to its excellent comprehensive performance. Compared with shape memory alloys, shape memory polymer materials have the advantages of light weight, corrosion res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08K9/04C08K9/02C08K7/06C08G59/50C08G59/24
Inventor 吕满庚郭会龙
Owner SICHUAN HUASON ELECTRONICS TECH
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