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High-performance flame-retardant epoxy resin-based composite material and preparation method thereof

A technology for epoxy resin and composite materials, applied in the field of composite materials, can solve the problems of adverse effects of gel curing of composite materials, increase in viscosity of epoxy resin system, and decrease in resin process performance, etc., to achieve high bond strength and improve tensile strength Effects of modulus, good toughness and impact resistance

Pending Publication Date: 2022-02-08
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with halogen-containing flame retardants, the flame retardant efficiency of halogen-free flame retardants is relatively low. In order to achieve a certain flame retardant performance, it is necessary to increase the amount of flame retardants. On the one hand, it will increase the viscosity of the epoxy resin system and reduce the viscosity of the resin. Process performance, on the other hand, excessive use of flame retardants will adversely affect the gel curing of composite materials

Method used

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  • High-performance flame-retardant epoxy resin-based composite material and preparation method thereof
  • High-performance flame-retardant epoxy resin-based composite material and preparation method thereof
  • High-performance flame-retardant epoxy resin-based composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment discloses a high-performance flame-retardant epoxy resin-based composite material, including 30 parts of resin matrix and 70 parts of reinforcing fiber, the reinforcing fiber adopts SW300 glass fiber, and the formula of the resin matrix is ​​as follows (statistics in parts by mass) :

[0032]

[0033] figure 1 To prepare the flow chart, the specific preparation steps are as follows:

[0034] The first step is to weigh 15 parts of bisphenol A liquid epoxy resin E-51, 16 parts of four-functional liquid epoxy resin AG-80, 7 parts of toughening agent, 20 parts of intumescent flame retardant and 4 parts of curing agent. 2 parts and 2 parts of accelerator were mixed uniformly at room temperature, and passed through a three-roll mill twice to obtain a mixture;

[0035] The second step is to weigh 35 parts of solid epoxy resin E-20, heat up to 120°C to melt, add it to the mixture, and quickly mix it evenly to obtain a flame-retardant epoxy resin matrix;

...

Embodiment 2

[0043] A high-performance flame-retardant epoxy resin-based composite material disclosed in this embodiment includes 40 parts of resin matrix and 60 parts of reinforcing fiber, the reinforcing fiber adopts SW300 glass fiber, and the formula of its resin matrix is ​​as follows (statistics in parts by mass) :

[0044]

[0045] The preparation steps are as follows:

[0046] The first step is to weigh 20 parts of bisphenol A liquid epoxy resin E-52, 20 parts of four-functional liquid epoxy resin AG-80, 10 parts of toughening agent, 10 parts of intumescent flame retardant and 8 parts of curing agent. 1 part and 1 part of accelerator were mixed uniformly at room temperature, and passed through a three-roll mill twice to obtain a mixture;

[0047] The second step is to weigh 40 parts of solid epoxy resin E-14, heat up to 130°C to melt, add it to the mixture, and quickly mix it evenly to obtain a flame-retardant epoxy resin matrix;

[0048] In the third step, the flame-retardant ...

Embodiment 3

[0052] A high-performance flame-retardant epoxy resin-based composite material disclosed in this embodiment includes 50 parts of resin matrix and 50 parts of reinforcing fiber, the reinforcing fiber adopts DSCCP-200 plain weave carbon cloth, and the formula of its resin matrix is ​​as follows (by mass parts statistics):

[0053]

[0054]

[0055] The preparation steps are as follows:

[0056] The first step is to weigh 10 parts of bisphenol A liquid epoxy resin E-54, 10 parts of four-functional liquid epoxy resin AG-80, 5 parts of toughening agent, 30 parts of intumescent flame retardant and 3 parts of curing agent. 3 parts and 3 parts of accelerator were mixed uniformly at room temperature, and passed through a three-roller mill twice to obtain a mixture;

[0057] The second step is to weigh 25 parts of solid epoxy resin JF-45, heat up to 90°C to melt, add it to the mixture, and quickly mix it evenly to obtain a flame-retardant epoxy resin matrix;

[0058] In the thir...

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Abstract

The invention discloses a high-performance flame-retardant epoxy resin-based composite material and a preparation method thereof, and belongs to the technical field of composite materials. The epoxy resin-based composite material comprises a resin matrix and reinforced fibers, and the resin matrix comprises liquid epoxy resin, solid epoxy resin, a flame retardant, a flexibilizer, a curing agent and an accelerant. The epoxy resin-based composite material has the effects of high flame-retardant efficiency and good mechanical property, meets the highest-grade flame-retardant requirement in the standard requirements of UL94, EN45545 and the like, and has good impact resistance and creep resistance.

Description

technical field [0001] The invention relates to a high-performance flame-retardant epoxy resin-based composite material and a preparation method thereof, belonging to the technical field of composite materials. Background technique [0002] Epoxy resin is widely used in various fields due to its excellent performance and low cost. Epoxy resin has become an indispensable and important material in the development of the national economy, and its output and application level can also reflect the degree of development of a country's industrial technology from one side. In recent years, the continuous development of the new technology industry has put forward higher requirements for the performance and use of epoxy resin. Rail trains and airplanes play a pivotal role in the transportation industry. The worldwide demand for rail trains and airplanes is increasing year by year. At the same time, higher requirements are placed on their carrying capacity, comfort performance, enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08L63/00C08K7/14C08K3/32C08K5/3492C08K5/053C08J5/24
CPCC08L63/00C08J5/24C08K2003/323C08L2201/02C08L2205/025C08J2363/02C08J2463/00C08K7/14C08K3/32C08K5/34922C08K5/053
Inventor 董大为欧秋仁郝杰石悦徐畅
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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