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High-strength and high-toughness epoxy resin

An epoxy resin, high toughness technology, applied in the field of polymer materials, can solve the problems of high cost and limited effect of improving the mechanical properties of epoxy resin, and achieve the effect of improving strength and toughness

Inactive Publication Date: 2018-01-30
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the above-mentioned patents have limited effect on improving the mechanical properties of epoxy resin, or the cost is high

Method used

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  • High-strength and high-toughness epoxy resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 100g of four-functional epoxy epoxy resin, 19g of epoxy octadecane, 95g of hexahydrophthalic anhydride, and 0.48g of quaternary ammonium salt are mixed in a beaker, placed in a constant temperature oil bath and stirred at a medium speed for 10min, vacuumed to remove air bubbles, that is, press 90°C / After 3h+130℃ / 3h pouring and curing, the cured epoxy resin can be obtained, and the mechanical properties are shown in Table 1.

Embodiment 2

[0030] Four functional epoxy epoxy resin 100g, 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate 10g, methyl nadic anhydride 123g, and DMP-30 accelerator 2.33g mixed Place the beaker in a constant temperature oil bath and stir at medium speed for 10 minutes, vacuumize to remove air bubbles, and pour and cure at 90°C / 3h+130°C / 3h to obtain cured epoxy resin. The mechanical properties are shown in Table 1.

Embodiment 3

[0032] 100g of bisphenol F epoxy resin, 5g of glycidyl stearate, 96g of nadic acid anhydride, and 1.45g of N-diglycidyl aniline accelerator were mixed in a beaker, placed in a constant temperature oil bath and stirred at medium speed for 10min, vacuumed to remove air bubbles, That is, pour and cure at 90°C / 3h+130°C / 3h to obtain a cured epoxy resin. The mechanical properties are listed in Table 1.

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Abstract

The present invention discloses high-strength and high-toughness epoxy resin. The high-strength and high-toughness epoxy resin is obtained by curing of the following raw materials: 38wt%-59wt% of substrate resin, 38wt%-59wt% of a curing agent and 0.1wt%-3wt% of an accelerator; the substrate resin is a mixture of epoxy resin and a reactive diluent; the reactive diluent is a weakly-polar epoxy compound with side chains. The epoxy resin cured material with high tensile strength, high tensile modulus and good toughness is obtained by adding a proper amount of weakly-polar and low-viscosity epoxy resin to obtain a low-viscosity epoxy resin component, mixing the obtained epoxy resin component, the curing agent and the accelerator, and performing a curing reaction. According to the invention, various epoxy resin is suitable for preparing the epoxy resin cured material provided by the invention, and the method is simple.

Description

technical field [0001] The present invention relates to the technical field of macromolecular materials, and furthermore, relates to a high-strength and high-toughness epoxy resin. Background technique [0002] Fiber-reinforced epoxy resin composites have the advantages of high specific strength, high specific modulus, low density, stable structure size, corrosion resistance, fatigue resistance, and material properties can be designed. They have been widely used in aerospace, transportation, and wind power blade manufacturing. , chemical anticorrosion, construction engineering and sports equipment and other fields. [0003] Liquid infusion molding technology is a new process for rapid prototyping of composite materials. Liquid resin is injected into the mold with pre-laid fiber reinforced materials under the action of vacuum pressure field. At the same time, the self-crosslinking and curing reaction is completed to form a product. The liquid infusion molding process has th...

Claims

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Application Information

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IPC IPC(8): C08G59/42C08L63/00
Inventor 程珏巴龙翰邹齐张军营
Owner BEIJING UNIV OF CHEM TECH
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