碳纤维湿法缠绕用环氧树脂基体研究

Research on epoxy resin matrix/carbon fiber composite by wet winding

以TDE-85树脂和AFG-90树脂为主体树脂,混合芳香胺为固化剂,研究了一种适合于碳纤维复合材料湿法缠绕成型的树脂配方。结果表明,该树脂的黏度低(＜550 mPa·s)、适用期长,其浇铸体具有优异的力学性能,其拉伸强度为107 MPa,拉伸模量为4．09 GPa,弯曲强度为161 MPa,弯曲模量为3．88 GPa,断裂伸长率超过6%。用其制备的T-700碳纤维缠绕复合材料界面粘接好,NOL环层间剪切强度达到66．8 MPa,拉伸强度达到2．44 GPa。

Through applying a blend of TDE-85 and AFG-90 epoxy resin and using aromatic diamine as cure agent to prepare epoxy resin matrix/carbon fiber composite by wet winding mainly, a formulation for wet winding of carbon fiber based composite was given in this paper. The results of experiments showed that the epoxy resin matrix had a low viscosity, 〈 550 mPa·s and long operate life and the casting had excellent mechanical properties that the tensile strength was 107 MPa, modulus of stretch was 4.09 GPa, flexural strength was 161 MPa, flexural modulus was 3.88 GPa and extensibility was 6.1%. Through study on the properties of the ep- oxy resin matrix/T-700 carbon fiber composites by winding, the matrix proved cohere well with the carbon fiber and the interlaminar shear strength of composite NOL ring was up to 66.8 MPa, and the tensile strength was 2.44 GPa.