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研究橡胶高耐燃性是聚合物现代化学和现代工艺学最重要的任务之一。首先,例如廉价的工业弹性体——氯化聚乙烯,耐燃性随着氯化程度的提高而增加:燃烧热线型地降低,由聚乙烯的44.1KJ/g降低到含氯66.1％氯化聚乙烯的7.6KJ/g。氯含量从0增加到48％时,氯化聚乙烯的自燃温度由398℃提高到466℃。含50％以及更多氯(或者在氯化聚乙烯中对一个单链环C_2H_4氯原子不低于0.77)的橡胶不会自燃,并且在空气中不燃烧。目前,氧指数(ku)是聚合物和弹性体可
Studying rubber High flame resistance is one of the most important tasks in modern and modern polymer science. First, for example, the inexpensive industrial elastomer, chlorinated polyethylene, flame resistance increases with increasing degree of chlorination: the combustion heat decreases linearly from 44.1 KJ / g polyethylene to 65.1 KJ chlorine. Chlorinated poly 7.6 KJ / g of ethylene. When the chlorine content increased from 0 to 48%, the autoignition temperature of chlorinated polyethylene increased from 398 ℃ to 466 ℃. Rubber containing 50% or more of chlorine (or not less than 0.77 C? H? 4 for a single-chain ring in chlorinated polyethylene) will not self-ignite and will not burn in the air. Currently, the oxygen index (ku) is polymer and elastomer