添加剂对PVC热稳定性和阻燃抑烟性能影响的机理分析

Mechanism analysis on influence of additives on heat stability and fire-retardant smoke-suppressant properties of PVC

分析了常见添加剂对PVC在高温条件下的热稳定性、HCl的释放、阻燃性、抑烟性和燃烧毒性等的作用机理,并指出:应加强添加剂存在条件下PVC在高温和火灾条件下氯代二恶英和多氯代二苯并呋喃的形成与释放以及金属化合物存在形式等方面的研究。

The mechanisms of common additives influencing the heat stability, HCl liberation, fire- retardant property, smoke - suppressant property, and combustion toxicity of PVC at high temperature are analyzed. It is also pointed out that the study on the formation and evolution of chlorinated dioxines and polychlorinated dibenzofurans, and the existing form of metal compounds under the conditions of high temperature and fire in the presence of additives should be strengthened.