ASTM D5019是用于单层屋顶薄膜的增强CSM板(氯磺化聚乙烯)的标准规范：
本规范规定了拟用于单层屋顶薄膜的、用氯磺化聚乙烯(CSM)制造的增强非硫化聚合物板空气曝露测试程序。
1.1 This specification covers reinforced non-vulcanized polymeric sheet made from chlorosulfonated polyethylene (CSM) and poly-isobutylene (PIB) intended for use as a single-ply roof membrane exposed to the weather. The sheet shall be reinforced with fiber or fabric.
1.1.1 The polymers used in these sheets have thermoplastic characteristics at time of installation. The chlorosulfonated polyethylene will vulcanize in place under ambient conditions on a roof.