Research of double vacuum bag molding process for carbon fiber/vinyl resin prepreg

doi:10.19936/j.cnki.2096-8000.20211028.014

Abstract

Abstract: In this paper, vinyl resin prepreg is used to form composite materials by double vacuum bag (DVB) molding process. The influence of the step curing system on the mechanical properties and porosity of the product was studied. The optimum mechanical properties have heen realized when being cured 3 hours at 100 ℃, then cured 4 hours at 140 ℃ and the vacuum degree of the inner bag film is maintained at -0.075 MPa for 2 hours in the early stage as a curing process to form a 4 mm thick laminate, and the porosity is the lowest, 0.45%. When forming 10 mm thick laminate, the porosity of the laminate is 1.75%, which is also less than 2%. It proves the feasibility of forming thicker laminates by this process.

Key words: vinylresin, double vacuum bag molding process, the step curing system, porosity, composites

CLC Number:

TB332

ZHANG Yi, YANG Rui-rui, GUO Wan-tao, TAO Hong-bo. Research of double vacuum bag molding process for carbon fiber/vinyl resin prepreg[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(10): 96-100.

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