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采用丁基橡胶(IIR)和三元乙丙橡胶(EPDM)共混硫化制备芥子气防护时间测试标准物质,并研究其均匀性和稳定性。通过配方设计和制备工艺的优化获得芥子气防护时间为130 min左右的IIR/EPDM共混物胶片。方差分析和线性拟合结果显示所制样品的均匀性优异,12个月内特性值的稳定性良好,可以用作芥子气防护时间测试标准物质。
A standard test substance of mustard gas protection time was prepared by blending and curing with butyl rubber (IIR) and ethylene propylene diene monomer (EPDM), and its homogeneity and stability were studied. Through the optimization of formulation design and preparation process, IIR / EPDM blend films with mustard protection time of about 130 min were obtained. The results of ANOVA and linear fitting show that the prepared samples have excellent homogeneity and good stability within 12 months, which can be used as the standard of mustard gas protection time test.