Carbon fiber prepreg and preparation method thereof

Abstract

The invention discloses carbon fiber prepreg and a preparation method thereof. The carbon fiber prepreg is mainly prepared from components as follows: epoxy resin, a curing agent, an accelerant and carbon fibers, wherein epoxy resin is prepared from novolac epoxy resin, liquid bisphenol A epoxy resin and solid bisphenol A epoxy resin in a mass ratio being 1:(1-2):1. The carbon fiber prepreg can be stored for more than 12 months at the normal temperature and can be widely applied to the fields of fishing tackles, sports apparatus, sporting goods, aerospace and the like.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a carbon fiber prepreg and a preparation method thereof. Background technique [0002] Carbon fiber prepreg is a composite material made of carbon fiber yarn, epoxy resin and other materials, which are processed by coating, hot pressing, cooling, laminating, coiling and other processes, also known as carbon fiber prepreg; carbon fiber prepreg Prepregs are widely used in fishing tackle, sports equipment, sporting goods, aerospace and other fields. At present, long-term storage of carbon fiber prepregs requires low-temperature storage, which increases its application cost. CN201310515677.4 provides a prepreg that is stored at room temperature and has a mechanically stable cured product, but the normal temperature storage time of the currently produced carbon fiber prepreg needs to be further improved. In addition, another difficulty in improving the room tempe...

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Problems solved by technology

CN201310515677.4 provides a prepreg that is stored at room temperature and the cured material is mechanically stable, but the normal temperature storage time of the carbon fiber prepreg currently produced needs to be further improved

In addition, another difficulty in improving the room temperature storage time of carbon fiber prepreg is that after the formula is changed, the production difficulty increases, the components after the formula adjustment cannot achieve continuous production, and the produced materials are not uniform

[0003] The applicant has been committed to the research of carbon fiber prepreg, and already has the production practice and theoretical basis of carbon fiber prepreg, such as 201610338104.2 (a preparation method of high-strength carbon fiber prepreg), which discloses that the applicant prepares carbon fiber prepreg related components in the material, such as liquid epoxy resin, solid epoxy resin, curing agent and accelerator, etc., but the applicant still encountered the following problems when researching carbon fiber prepregs that can be stored at room temperature: When it comes to resin ratio and resin type, even small-scale adjustments and replacement of resins with similar structures will have a great impact on the product’s gelling performance and final cured performance, and the adjusted formula cannot be mass-produced; The impregnation itself has extremely high requirements on material performance and the complexity of the production process, which caused the applicant to greatly affect the overall performance and production cycle of the material when adjusting its formula

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