Carbon fiber hot press molding densification process and equipment

Abstract

The invention discloses a carbon fiber hot press molding densification technology and equipment, and belongs to the technical field of carbon fiber processing, the technology comprises raw material mixing, layer laying, hot press molding, high temperature curing carbonization, demolding, asphalt dipping, carbonization, naphthalene in-situ asphalt dipping polymerization, high temperature and high pressure carbonization, graphitization and surface coating; the equipment comprises a V-shaped stirring machine and a hot pressing mold, feeding ports are formed in the tops of feeding channels on the two sides of a V-shaped stirring barrel, a discharging port is formed in the bottom of the V-shaped stirring barrel, a baffle is hinged to an upper wall plate of the V-shaped stirring barrel, a check block is arranged on a lower wall plate of the V-shaped stirring barrel, and a scraper assembly is arranged on the lower wall plate; a stirring assembly is arranged above a discharge hole of the V-shaped stirring barrel; the hot pressing mold comprises a mounting frame, an upper heating part is arranged below a top plate of the mounting frame, a carbon-carbon upper mold is arranged below the upper heating part, a carbon-carbon lower mold is arranged below the carbon-carbon upper mold, a lower heating part is arranged below the carbon-carbon lower mold, and a jacking air cylinder is arranged below the carbon-carbon lower mold.

Description

technical field [0001] The invention relates to the technical field of carbon fiber processing, in particular to a carbon fiber hot pressing forming densification process and equipment. Background technique [0002] carbon fiber / charcoal (C f / C) The composite material has excellent properties of high specific strength, high specific modulus, material structure designability, high strength retention rate at high temperature, and it is widely used in military, aerospace and other fields. C f / C composite material has good strength and elastic modulus at room temperature, and can replace steel and various metals. At present, the tensile strength of Cf / C composite material has exceeded that of high-quality steel; Cf / C composite material not only has the advantages of other composite materials And it has its own unique features: since the system is composed of carbon elements, the carbon atoms have a strong affinity for each other, which makes the Cf / C composite material have ...

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Problems solved by technology

but C f / C composites also have some problems that limit its application. At present, the main problem is that the performance of various commonly used densification methods and impregnants is not satisfactory.

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