【摘要】 测定了环氧树脂/芳纶纤维预浸料的固化度(红外法)、不可溶分含量及其复合材料的力学性能与储存时间的关系。结果表明,固化度、不可溶分含量与储存时间之间在95％的置信条件下呈显著的线性关系。固化度、不可溶分含量可以作为预浸料的质量控制参数,其试验方法可用于预浸料的质量控制。更多还原

【Abstract】 Samples of epoxy resin/aramid fiber prepreg were exposed to 25℃ and about 50% relative humidity for different periods up to 129 days. The epoxy index and insoluble matter content of prepreg were analyzed in order to study the reladonship between physicochemi-cal changes and storage period. A linear relationship could be discerned between curing degree, which calculated from the epoxy index of prepreg, and storage period at confidence level of 95 percent by linear regression to the test data. The curing degree calculated from the epoxy index of prepreg would be used as a paramater of quality control.更多还原