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Epoxy resin/polyion liquid composite and preparation method thereof

A technology of polyionic liquid and epoxy resin, which is applied in the field of epoxy resin/polyionic liquid composite material and its preparation, to achieve the improvement of tensile strength and fracture toughness, increase of heat resistance, increase of crosslink density and glass transition The effect of temperature

Active Publication Date: 2018-09-07
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are no relevant reports on the use of polyionic liquids to modify epoxy resins at home and abroad.

Method used

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  • Epoxy resin/polyion liquid composite and preparation method thereof
  • Epoxy resin/polyion liquid composite and preparation method thereof
  • Epoxy resin/polyion liquid composite and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A kind of method adopting polyionic liquid to toughen the comprehensive property of epoxy resin such as mechanical property, heat resistance and dielectric property, concrete steps are as follows:

[0045] 1. Preparation of polyionic liquid

[0046] Add 1-butyl-3 vinylimidazole tetrafluoroborate (99.5% mole fraction) and initiator azobisisobutyronitrile (0.5% mole fraction) into the Schlenk bottle at room temperature, and vacuum to No air bubbles, blow argon, heat up to 40°C, stir until the initiator is dissolved, and remove air bubbles in a vacuum; raise the temperature of the mixed solution to 65°C and react for 5 hours to obtain a yellow transparent solid mixture; finally, after purification, the yellow-white amorphous polymer is obtained as polyionic liquid.

[0047] 2. Preparation of epoxy resin / polyionic liquid / curing agent compound

[0048] 1) 1.2g polyionic liquid prepared in step 1 is added to 40g (in this embodiment, the mass ratio of polyionic liquid to epo...

Embodiment 2

[0053] A kind of method adopting polyionic liquid to toughen the comprehensive property of epoxy resin such as mechanical property, heat resistance and dielectric property, concrete steps are as follows:

[0054] 1. Preparation of polyionic liquid

[0055] Add 1-butyl-3 vinylimidazole tetrafluoroborate (99.5% mole fraction) and initiator azobisisobutyronitrile (0.5% mole fraction) into the Schlenk bottle at room temperature, and vacuum to No air bubbles, blow argon, heat up to 40°C, stir until the initiator is dissolved, and remove air bubbles in a vacuum; raise the temperature of the mixed solution to 65°C and react for 5 hours to obtain a yellow transparent solid mixture; finally, after purification, the yellow-white amorphous polymer is obtained as polyionic liquid.

[0056] 2. Preparation of epoxy resin / polyionic liquid / curing agent compound

[0057] 1) 2.0g polyionic liquid that step 1 makes is joined in 40g (in this embodiment, the content of epoxy resin in the polyion...

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Abstract

The invention relates to an epoxy resin / polyion liquid composite adopting a microphase separation structure and a preparation method of the composite, belongs to the field of resin-based composites and provides the preparation method of the epoxy resin / polyion liquid composite. The preparation method comprises steps as follows: a polyion liquid, epoxy resin and a curing agent are stirred and mixedat the temperature of 50-80 DEG C, so that the polyion liquid is uniformly dispersed in the epoxy resin and the curing agent; the mixture is completely cured at the temperature of 80-150 DEG C, and the epoxy resin / polyion liquid composite is obtained; in the curing process, phase separation is produced, the polyion liquid forms the microphase separation structure in the epoxy resin, wherein the polyion liquid accounts 1%-10% of epoxy resin by mass. The elongation at break, the tensile strength, the fracture toughness and the dielectric property of the epoxy resin are all improved, and the heat resistance is also increased to a certain extent.

Description

technical field [0001] The invention relates to an epoxy resin / polyionic liquid composite material with a microphase separation structure and a preparation method thereof, belonging to the field of resin-based composite materials. Background technique [0002] Epoxy resin is one of the commonly used thermosetting resins with excellent performance, and has excellent processing fluidity. The cured product has a series of excellent properties such as high strength, high modulus, good dimensional stability of the product, and excellent bonding performance. Therefore, it is often used as a matrix resin for coatings, adhesives, and composite materials. However, the high cross-linking density of cured epoxy resin results in high brittleness and poor resistance to cracks. Therefore, in practical applications, we need to toughen epoxy resins while retaining their excellent properties. At present, the toughening methods of epoxy resin mainly include rubber, thermoplastics, nanopart...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L43/00C08F130/06
CPCC08F130/06C08L63/00C08L2201/08C08L43/00
Inventor 孔米秋刘成俊黄亚江李光宪
Owner SICHUAN UNIV
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