缠绕用低粘度高韧性环氧树脂体系性能研究

Property Study on Epoxy Resin System of Low Viscosity and High Toughness for Winding

采用脂环族环氧树脂和双酚F环氧树脂为基体树脂,通过添加稀释剂、增韧剂、芳香胺型固化剂,制备了低粘度、高韧性环氧树脂体系,对该树脂体系的耐热性能及复合材料力学性能进行了研究。结果表明,在40℃时树脂体系粘度为230 mpa·s,操作时间大于8h,浇铸体玻璃化转变温度为132.1℃,拉伸强度为70.72MPa,断裂延伸率为3.09%。通过缠绕工艺制备了复合材料单向板,拉伸强度为2839.06MPa,弯曲强度为1609.49 MPa,力学性能优异。

Taking alicyclic epoxy resin and bisphenol F epoxy resin as matrix,the epoxy resin system of low viscosity and high toughness is synthesized by adding diluent,toughener,and aromatic amine curing agent.The heat resistance of this resin system,as well as the mechanical property of the composite based on it are investigated.The results demonstrate that the resin system is endowed with the viscosity of 230 mpa·s at 40℃,the operation time over 8 h,the casting matrix glass transition temperature(T g)of 132.1℃,the tensile strength of 70.72 MPa,and the elongation at break of 3.09%.The composite of unidirectional laminate is fabricated through winding process,and it exhibits superior mechanism with the tensile strength of 2839.06 MPa and the bending strength of 1609.49 MPa.