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Shape memorizing liquid crystal epoxy resin-glass fiber-silicon dioxide composite and preparation method thereof

A silica and glass fiber technology, applied in the field of shape memory liquid crystal epoxy resin-glass fiber-silica composite material and its preparation, can solve the problem of not being able to meet the requirements of cost and performance at the same time, and achieve high shape fixation rate and deformation recovery rate, improving interface adhesion, and the effect of strong interface adhesion

Inactive Publication Date: 2014-08-06
NANXIONG MATERIAL PRODION BASE OF CHINESE ACADEMY OF SCI GUANGZHOU CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Chinese Invention Patent Application No. 201110305569.5 and the Chinese Invention Patent Application No. 201010203910.1 disclose branched liquid crystal epoxy resin and biphenyl liquid crystal epoxy resin and study their shape memory effect, and their products have better thermodynamics Performance and shape memory performance, but shape memory materials in the prior art cannot meet the requirements of cost and performance at the same time

Method used

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  • Shape memorizing liquid crystal epoxy resin-glass fiber-silicon dioxide composite and preparation method thereof
  • Shape memorizing liquid crystal epoxy resin-glass fiber-silicon dioxide composite and preparation method thereof
  • Shape memorizing liquid crystal epoxy resin-glass fiber-silicon dioxide composite and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0038] (1) Silica and glass fiber surface treatment: Take 10g of dried nano-silica with a particle size of 20nm and a purity of 99.9%, and 100ml of anhydrous acetone in a beaker. Under ultrasonic conditions, gradually add 1g of silane The acetone solution of the coupling agent KH570, after ultrasonication for 30 minutes, suction filtration, drying in a vacuum oven to obtain surface-treated silica; the thickness is 0.1mm, and the gram weight is 300g / m 2 Soak and wash the alkali-free glass fiber cloth in acetone solution for 24 hours, take it out and dry it at room temperature to obtain the glass fiber after surface treatment;

[0039] (2) Preparation of composite material mixed solution: take liquid crystal epoxy resin 5.81g and curing agent DDM0.98g shown in formula 2 with a molar ratio of 2:1, dissolve in 20ml acetone to obtain mixed solution, and then add step ( 1) 0.21 g of treated nano-silica, ultrasonically vibrated for 30 minutes, so that the silicon dioxide is uniformly...

Embodiment 3

[0045] (1) Silica and glass fiber surface treatment: Take 10g of dried nano-silica with a particle size of 20nm and a purity of 99.9%, and 100ml of anhydrous acetone in a beaker. Under ultrasonic conditions, gradually add 1g of silane The acetone solution of the coupling agent KH570, after ultrasonication for 30 minutes, suction filtration, drying in a vacuum oven to obtain surface-treated silica; the thickness is 0.1mm, and the gram weight is 300g / m 2 Soak and wash the alkali-free glass fiber cloth in acetone solution for 24 hours, take it out and dry it at room temperature to obtain the glass fiber after surface treatment;

[0046] (2) Preparation of composite material mixed solution: take liquid crystal epoxy resin 5.73g and curing agent DDM1.06g shown in formula 3 with a molar ratio of 2:1, dissolve in 20ml acetone to obtain mixed solution, then add step ( 1) 0.21 g of treated nano-silica, ultrasonically vibrated for 30 minutes, so that the silicon dioxide is uniformly dis...

Embodiment 4

[0052] (1) Silica and glass fiber surface treatment: Take 10g of dried nano-silica with a particle size of 20nm and a purity of 99.9%, and 100ml of anhydrous acetone in a beaker. Under ultrasonic conditions, gradually add 1g of silane The acetone solution of the coupling agent KH570, after ultrasonication for 30 minutes, suction filtration, drying in a vacuum oven to obtain surface-treated silica; the thickness is 0.1mm, and the gram weight is 300g / m 2 Soak and wash the alkali-free glass fiber cloth in acetone solution for 24 hours, take it out and dry it at room temperature to obtain the glass fiber after surface treatment;

[0053] (2) Composite material mixed solution preparation: take by weighing liquid crystal epoxy resin 5.89g and curing agent DDM0.9g shown in formula 4 that molar ratio is 2:1, dissolve in 20ml acetone, obtain mixed solution, then add step ( 1) 0.21 g of treated nano-silica, ultrasonically vibrated for 30 minutes, so that the silicon dioxide is uniformly...

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Abstract

The invention belongs to composites and the field of composite preparation, and discloses a shape memorizing liquid crystal epoxy resin-glass fiber-silicon dioxide composite and a preparation method thereof. The preparation method comprises the following steps: dissolving liquid crystal epoxy resin and a curing agent into acetone, then adding silicon dioxide subjected to surface treatment by a silane coupling agent so as to obtain a composite mixed liquid, and pouring the obtained composite mixed liquid into a mould laid with glass fiber subjected to surface treatment to be reacted and cured so as to obtain the liquid crystal epoxy resin-glass fiber-silicon dioxide composite with the shape memorizing performance. The obtained material has excellent mechanical performance and shape memorizing performance, and can be applied to the fields of science and technology such as biomedicine and aerospace.

Description

technical field [0001] The invention belongs to the field of composite materials and preparation thereof, in particular to a shape memory liquid crystal epoxy resin-glass fiber-silicon dioxide composite material and a preparation method thereof. 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 ligh...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K13/06C08K9/06C08K7/14C08K3/36C08G59/50C08G59/24
Inventor 吕满庚郭会龙
Owner NANXIONG MATERIAL PRODION BASE OF CHINESE ACADEMY OF SCI GUANGZHOU CHEM
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