Difunctional epoxy resin composite material and preparation method thereof

A technology of epoxy resin and composite materials, applied in the direction of plastic recycling, recycling technology, etc., can solve the problems of insufficient ultraviolet shielding performance of epoxy resin, low sensitivity, complex analysis equipment, etc., achieve good ultraviolet shielding function, efficient and non-destructive recycling Effect

Active Publication Date: 2021-09-24
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In aerospace polymer materials, materials with dual functions of UV shielding and damage self-reporting are often required, but no epoxy resin composite materials have been found to synthesize these two functions. Therefore, through research, this research group proposed a An epoxy resin composite material with dual functions of UV shielding and damage self-reporting, which solves the lack of UV shielding performance of existing epoxy resins, time-consuming damage analysis of composite materials, complicated analysis equipment, cumbersome preparation process of mechanochromic materials, and low sensitivity. question

Method used

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  • Difunctional epoxy resin composite material and preparation method thereof
  • Difunctional epoxy resin composite material and preparation method thereof
  • Difunctional epoxy resin composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0030] In this example, diglycidyl 4,5-epoxyhexane-1,2-dicarboxylate was purchased from Tianjin Jindong Chemical Factory Co., Ltd.; 4,4'-dithiodiphenylamine was purchased from Shanghai Anaiji Chemical Co., Ltd., the structure diagram is as follows figure 1 and figure 2 As shown, glass fiber (EW250F) was purchased from Nanjing Glass Fiber Research and Design Institute.

[0031] This embodiment includes an epoxy resin material / resin composite material with dual functions of UV shielding and damage self-reporting, comprising the following steps:

[0032] Pretreatment of M-1 resin and curing agent:

[0033] 100 grams of 4,5-epoxyhexane-1,2-dicarboxylic acid diglycidyl ester and 62 grams of 4,4'-dithiodianiline were uniformly mixed at 55°C to obtain glue A.

[0034] Post-pouring treatment of M-2 resin material:

[0035] Vacuumize the glue A obtained in step M-1 to remove air bubbles, then pour it into a metal mold and undergo a solidification process of 100°C / 1h+160°C / 2h+200°...

Embodiment 2

[0043] In this example, diglycidyl 4,5-epoxyhexane-1,2-dicarboxylate was purchased from Tianjin Jindong Chemical Factory Co., Ltd.; 4,4'-dithiodiphenylamine was purchased from Shanghai Anaiji Chemical Co., Ltd. purchase; glass fiber (EW250F) purchased from Nanjing Glass Fiber Research and Design Institute.

[0044] This embodiment includes an epoxy resin material / resin composite material with dual functions of UV shielding and damage self-reporting, comprising the following steps:

[0045] Pretreatment of M-1 resin and curing agent:

[0046] 100 grams of 4,5-epoxyhexane-1,2-dicarboxylic acid diglycidyl ester and 75 grams of 4,4'-dithiodianiline were uniformly mixed at 55°C to obtain glue B.

[0047] Post-pouring treatment of M-2 resin material:

[0048] Vacuumize the glue B obtained in step M-1 to remove air bubbles, then pour it into a metal mold and undergo a curing process of 100°C / 1h+160°C / 2h+200°C / 2h for casting and molding, and cool to obtain a UV shielding and damage ...

Embodiment 3

[0055] In this example, diglycidyl 4,5-epoxyhexane-1,2-dicarboxylate was purchased from Tianjin Jindong Chemical Factory Co., Ltd.; 4,4'-dithiodiphenylamine was purchased from Shanghai Anaiji Chemical Co., Ltd. purchase; glass fiber (EW250F) purchased from Nanjing Glass Fiber Research and Design Institute.

[0056] This embodiment includes an epoxy resin material / resin composite material with dual functions of UV shielding and damage self-reporting, comprising the following steps:

[0057] Pretreatment of M-1 resin and curing agent:

[0058] 100 grams of 4,5-epoxyhexane-1,2-dicarboxylic acid diglycidyl ester and 87 grams of 4,4'-dithiodianiline were uniformly mixed at 55°C to obtain glue C.

[0059] Post-pouring treatment of M-2 resin material:

[0060] Vacuumize the glue C in step M-1 to remove air bubbles, then pour it into a metal mold and undergo a curing process of 100°C / 1h+160°C / 2h+200°C / 2h for casting and molding, and cool to obtain a product with UV shielding and dam...

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Abstract

The invention provides an epoxy resin composite material with double functions of ultraviolet shielding and damage self-reporting and a preparation method, and belongs to the technical field of composite material preparation and structure monitoring. The composite material is prepared from 100 parts by weight of epoxy resin, 60-87 parts by weight of a curing agent, 0-9 parts by weight of a catalyst and 45-300 parts by weight of fibers. According to the system disclosed by the invention, an ultraviolet screening agent and any mechanochromic additive do not need to be added, and the obtained epoxy resin material can show excellent ultraviolet screening and mechanochromic capabilities. Meanwhile, the composite material can show strong color change under periodic impact, and an effective and accurate prediction capability is provided for material damage caused by mechanical impact. Different from analysis of an existing material after damage, the color of the polymer composite material can be changed before the polymer composite material is damaged and broken, and a warning effect is provided for guaranteeing safe use of the material.

Description

Technical field: [0001] The invention belongs to the field of composite material preparation and structure monitoring, and in particular relates to an epoxy resin composite material with dual functions of ultraviolet shielding and damage self-reporting and a preparation method. Background technique: [0002] Ultraviolet radiation is a kind of high-energy radiation, which has been widely used in photolithography, food analysis, sewage treatment, medical treatment and other fields. However, long-term exposure to its radiation will not only cause serious damage to human skin and tissues, but also cause the chemical bonds of the polymer to break, reduce the mechanical properties of the material, accelerate the aging of the material, and shorten the service life. Fiber-reinforced polymer composites (FRPCs) have been widely used in aviation industry, automobile, ground transportation, sporting goods and other fields due to their excellent mechanical properties and light weight. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/02C08K7/00C08K7/14C08K7/06C08L97/02C08L1/02C08J5/24C08J11/28
CPCC08K7/00C08K7/14C08K7/06C08L63/00C08J5/24C08J11/28C08J2363/02C08J2363/00C08J2401/02C08J2497/02C08L97/02C08L1/02Y02W30/62
Inventor 胡君龚浩杰张浩
Owner BEIJING UNIV OF CHEM TECH
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