Carbon fiber reinforced thermosetting resin-based composite material and preparation method thereof

Abstract

The invention discloses a carbon fiber reinforced thermosetting resin-based composite material and a preparation method thereof, and belongs to the technical field of advanced composite materials. The preparation method comprises the following steps: sampling matrix resin, a low-shrinkage agent, a curing agent, a polymerization inhibitor, an internal release agent, a thickening agent and a dispersing aid according to the mass ratio, and conducting stirring and uniform mixing to prepare resin paste; preparing flaky carbon fiber prepreg from the resin paste and the carbon fiber non-woven fabric through a flaky molding compound process; flatly laying and overlaying the sheet-shaped carbon fiber prepreg, and conducting vacuum hot pressing and die assembly molding; and after the vacuum hot pressing die pressing is finished, and conducting cooling and demolding to obtain the carbon fiber reinforced thermosetting resin-based composite material. The preparation method has the characteristics of simple process, short production period, low energy consumption, designable strength and modulus, easiness in large-area forming, capability of meeting the forming requirements of products with complex shapes and structures and the like; and the prepared composite material has the excellent performances of high strength, high modulus, light weight, isotropy and the like.

Description

technical field

[0001] The invention relates to the field of advanced composite materials, in particular to a carbon fiber reinforced thermosetting resin-based composite material and a preparation method thereof. Background technique

[0002] With the rapid development of the automobile industry and the country's gradual emphasis on environmental protection issues, automobile lightweight has become a common development goal of the industry. The carbon fiber composite material combines light weight, high strength, high specific modulus, heat resistance, corrosion resistance, strong designability and many other excellent properties, especially in terms of automobile lightweight, resin-based composite materials are 50% lighter than steel materials , 30% lighter than aluminum, is an ideal lightweight material for automobiles (Yin Mingxun, Liu Ying, Qiao Xin. Resin-based composite materials and automobile lightweight [J]. Automotive Engineer, 2019(01): 16-19 .).

[0003] At pre...

Images