Prepolymer used for self-repair wear-resistant material and application of prepolymer used for self-repair wear-resistant material

A technology of wear-resistant materials and prepolymers, applied in the field of thermosetting shape memory polymers and recyclable polymers, can solve the problem that remodelable thermosetting SMPs cannot have high heat resistance, high mechanical properties, shape memory properties, and cannot be repeated Utilization, waste of resources and environmental issues, to achieve good reshaping performance, outstanding heat resistance, and low energy consumption

Active Publication Date: 2020-01-24
江苏立一新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, the developed remodelable thermoset SMPs cannot combine high heat resistance, high mechanical properties, and good shape memory properties, and cannot be used as wear-resistant materials.
Bismaleimide is a thermosetting resin with excellent mechanical properties and heat resistance. It is widely used in aerospace and other fields. At present, there are few reports on wear-resistant materials based on bismaleimide resin. Most of them are used as The modifier (the amount used is less than that of the main resin) is used for the modification of other substances, and the use of a reasonable process to prepare Shuangma wear-resistant materials has good practical significance
[0003] In addition, thermosetting resins are considered to be moldable only once and cannot be reused. Once defects such as cracks appear in wear-resistant products, they can only be scrapped, which will cause serious waste of resources and environmental pollution.

Method used

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  • Prepolymer used for self-repair wear-resistant material and application of prepolymer used for self-repair wear-resistant material
  • Prepolymer used for self-repair wear-resistant material and application of prepolymer used for self-repair wear-resistant material
  • Prepolymer used for self-repair wear-resistant material and application of prepolymer used for self-repair wear-resistant material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation method of the self-repairing wear-resistant material prepolymer of the present invention is as follows:

[0030] (1) In the presence of quaternary ammonium salt, react 2-allylphenyl glycidyl ether with adipic acid to prepare bis(3-(2-allylphenoxy)-2-hydroxypropyl)hexyl Diacid ester;

[0031] (2) Stir and mix bis(3-(2-allylphenoxy)-2-hydroxypropyl) adipate, bismaleimide, zinc compound, and filler system to obtain self-repairing wear-resistant Prepolymer for materials; filler system includes epoxy resin and alumina.

Synthetic example

[0033] On a mass basis, mix 120g of 2-allylphenol, 140g of sodium hydroxide, 10g of tetrabutylammonium bromide and 230g of tetrahydrofuran, and insulate and react at 35°C for 1.5h under stirring conditions to obtain solution A; Slowly add 270 g of epichlorohydrin dropwise, and keep stirring at 35° C. for 6 hours to react; after the reaction, vacuum rotary evaporation removes tetrahydrofuran and epichlorohydrin to obtain a crude product. The crude product was washed successively with saturated ammonium chloride solution (200 mL×2), deionized water (200 mL×2), and finally separated and purified by chromatography to obtain a yellow transparent liquid, namely 2-allylphenyl Glyceryl ether, the yield is about 93%, its reaction formula and 1 H-NMR see attached figure 1 and 2 . In terms of mass, mix 120g 2-allylphenyl glycidyl ether, 40g adipic acid, 10g tetrabutylammonium bromide and 230g acetonitrile, and insulate and react at 70°C for 8h under stirring conditions; after the reac...

Embodiment 1

[0035] Embodiment 1 Preparation of prepolymer for self-repairing wear-resistant materials

[0036] 50g N, N'-4,4'-diphenylmethane bismaleimide, 73.41g bis(3-(2-allylphenoxy)-2-hydroxypropyl) adipate and 6.29 g (22.3 mmol) zinc acetylacetonate hydrate and 4 g filler system were mixed, stirred and pre-polymerized at 130°C for 60 min, obtained from the prepolymer for repairing wear-resistant materials, and sampled for DSC testing.

[0037] Cool the above-mentioned prepolymer for self-repairing wear-resistant materials to room temperature, put it into a mold preheated at 150°C, and perform hot pressing and post-treatment according to the following process: 150°C / 1 h / 1MPa+180°C / 2 h / 3MPa +200 ℃ / 1.5 h / 5MPa+220 ℃ / 1.5 h / 5MPa and 240 ℃ / 2 h; demold after natural cooling, that is, the self-repairing wear-resistant material, and test TG, DMA, bending strength and wear resistance.

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Abstract

The invention discloses a prepolymer used for a self-repair wear-resistant material and application of the prepolymer used for the self-repair wear-resistant material. Specific production comprises blending 2-allylphenyl glycidyl ether and adipic acid in acetonitrile, under a condition of a quaternary ammonium salt as a catalyst, carrying out an esterification reaction to obtain bis(3-(2-allylphenoxy)-2-hydroxypropyl)adipate containing a reversible dynamic group; and then evenly mixing the bis(3-(2-allylphenoxy)-2-hydroxypropyl)adipate, bismaleimide and aluminium oxide to obtain the prepolymer, and conducting curing to produce the self-repair wear-resistant material. The self-repair wear-resistant material produced from the prepolymer not only has good wear resistance performance, thermalresistance performance and mechanical performance, but also can be remoulded under a hot-pressing condition, and has wide application prospects.

Description

technical field [0001] The invention relates to a prepolymer for self-repairing wear-resistant materials and its application, belonging to the fields of thermosetting shape memory polymers and recyclable polymers. Background technique [0002] In recent years, the developed remodelable thermoset SMPs cannot combine high heat resistance, high mechanical properties, and good shape memory properties, and cannot be used as wear-resistant materials. Bismaleimide is a thermosetting resin with excellent mechanical properties and heat resistance. It is widely used in aerospace and other fields. At present, there are few reports on wear-resistant materials based on bismaleimide resin. Most of them are used as The modifier (used less than the main resin) is used to modify other substances, and it has good practical significance to prepare Shuangma wear-resistant materials with a reasonable process. [0003] In addition, thermosetting resins can only be molded once and cannot be reuse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L63/00C08K3/22C07C67/26C07C69/44
CPCC07C67/26C08K2003/2227C08L79/085C08L2201/08C08L2201/12C08L63/00C08K3/22C07C69/44
Inventor 韩建梁国正王志龙
Owner 江苏立一新材料科技有限公司
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