Properties of low temperature curing vinyl ester resin prepreg thickened by organic bentonite

doi:10.19936/j.cnki.2096-8000.20220828.013

Abstract

Abstract: In order to prepare a low-temperature curing vinyl ester resin prepreg and study the effect of thickener content on the properties of prepreg and composite materials, organic bentonite was used as thickener and alkali-free glass fiber cloth was used as reinforcement material to prepare fiber prepreg by one-step impregnation method. The composite was formed by vacuum bag pressing, preheated at 60 ℃ for 30 min, and cured at 90 ℃ for 1 h. The technological properties of different organic bentonite prepreg materials and mechanical properties of the composites were investigated. The results show that the resin content of each prepreg material is slightly different, and the viscosity level is grade 1, so the technological properties are good. When the mass content of bentonite is 10%, the tensile strength is 395 MPa, the bending strength is 382 MPa and the compressive strength is 201 MPa, and the comprehensive mechanical properties are the best.

Key words: vinyl ester resin, prepreg, low temperature curing, mechanical property, composites

CLC Number:

TB332

LIU Xiao-fan, WU Shu-guang, XU Ren-xin. Properties of low temperature curing vinyl ester resin prepreg thickened by organic bentonite[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(8): 89-92.

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