Continuous fiber reinforced thermosetting flame-retardant prepreg and preparation method thereof

A continuous fiber and prepreg technology, which is applied in the field of continuous fiber reinforced thermosetting flame retardant prepreg and its preparation, can solve the problems of high-efficiency continuous production of composite materials such as flammability obstacles, and achieve the elimination of grinding process, Excellent coloring degree and the effect of improving production efficiency

Active Publication Date: 2021-04-09
HENGSHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the interior decorations in the car have achieved light weight, and at the same time, the technology also meets the rapid and continuous production of the automobile industry. However, efforts are still being made to achieve light weight of the load-bearing and secondary load-bearing parts of the car, such as , using lighter alloys, using chopped fiber or long fiber reinforced thermoplastic composites, and continuous fiber reinforced resin matrix composites, etc., and continuous fiber reinforced resin matrix composites have been considered to achieve the bearing and secondary The main way to reduce the weight of load-bearing parts, but efficient continuous production and the flammability of composite materials have hindered the realization of this process

Method used

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  • Continuous fiber reinforced thermosetting flame-retardant prepreg and preparation method thereof
  • Continuous fiber reinforced thermosetting flame-retardant prepreg and preparation method thereof
  • Continuous fiber reinforced thermosetting flame-retardant prepreg and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] In this embodiment, a continuous fiber-reinforced thermosetting flame-retardant prepreg for rapid curing by molding, the first step is to weigh and mix and modify according to the parts by mass:

[0031] Epoxy resin: 79.3 parts

[0032] Flame retardant: 8 parts magnesium hydroxide

[0033] Auxiliary additives: 2 parts BYK-9076

[0034] Leveling aid: 2 parts USIC8142

[0035] Colorant: 0.7 parts black colorant

[0036] Curing agent: 6 parts dicyandiamide

[0037] Accelerator: 2 parts: 1 part of thiourea, 1 part of phenyl phosphate of aromatic diamine

[0038] Add the epoxy resin component into the mixing kettle, raise the temperature to 65°C, stir well until the mixture is uniform, add 2 parts of BYK-9076 auxiliary agent, stir well, add 2 parts of USIC8142 leveling aid, and add resistance after fully stirring 8 parts of magnesium hydroxide as fuel agent, and 0.7 parts of black coloring agent are added at the same time, fully stirred until the mixture is uniform, coo...

Embodiment 2

[0078] In this embodiment, a continuous fiber-reinforced thermosetting flame-retardant prepreg for rapid curing by molding, the first step is to weigh and mix and modify according to the parts by mass:

[0079] Epoxy resin: 74.4 parts

[0080] Flame retardant: 13 parts (aluminum hydroxide + melamine phosphate)

[0081] Auxiliary additives: 2 parts BYK-9012

[0082] Leveling aid: 2 parts USIC8160

[0083] Colorant: 0.6 parts black colorant

[0084] Curing agent: 6 parts dicyandiamide

[0085] Accelerator: 2 parts: 1 part of organic urea, 1 part of p-phenylenediamine complexed with zinc bromide

[0086] Add the epoxy resin component into the mixing kettle, raise the temperature to 65°C, stir well until the mixture is uniform, add 2 parts of BYK-9012 auxiliary agent, stir well, add 2 parts of USIC8160 leveling aid, add flame retardant hydrogen Alumina and melamine phosphate total 13 parts, add 0.6 parts of black colorant at the same time, stir well until the mixture is unifo...

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Abstract

The invention discloses a continuous fiber reinforced thermosetting flame-retardant prepreg and a preparation method thereof. The continuous fiber reinforced thermosetting flame-retardant prepreg comprises a prepreg resin and a continuous fiber fabric, and is prepared by an environment-friendly hot melting process, wherein the content of the prepreg resin in the flame-retardant prepreg is 38-45%, the prepreg resin is prepared from the following raw materials: an epoxy resin, a flame retardant, an auxiliary additive, a leveling additive, a coloring agent, a curing agent and an accelerant, the accelerant comprise a first accelerant and a second accelerant, the first accelerant is one or more of organic urea, thiourea or imidazole compounds, the second accelerant is complexed aromatic diamine, and the flame-retardant prepreg can realize a rapid hot-in and hot-out process at a high temperature of 140-160 DEG C, does not influence the mechanical properties of the molded material, can be rapidly cured and molded for 3-6 minutes, has excellent flame retardant property, can achieve the UL94V0 flame retardant level, and further can achieve spraying-free so as to eliminate the traditional grinding and spraying technological process.

Description

technical field [0001] The invention relates to a continuous fiber-reinforced thermosetting flame-retardant prepreg and a preparation method thereof, belonging to the technical fields of molding technology and flame-retardant composite materials. Background technique [0002] With the national banner of "energy conservation and emission reduction", various industries are responding to relevant calls. For example, the rail transit industry, in the process of ensuring the breakthrough of high-speed railway operation speed, realizes The weight of the whole vehicle is reduced, thereby completing the improvement of speed. Similarly, in the field of automobiles, especially in the field of new energy vehicles, the endurance of power battery packs has always been the focus of concern from all walks of life. Relevant downstream industries use different methods to improve endurance. The weight of the whole vehicle is reduced to achieve the improvement of battery life. At present, mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/24C08L63/00
CPCC08J5/24C08J2363/00
Inventor 李志涛单瑞俊李海萌毛慧文白向鸽
Owner HENGSHEN
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