聚氯乙烯为生产与使用最广泛的合成塑料,而聚氯乙烯制造首先要生产氯乙烯单体,氯乙烯单体通过加热加压和催化剂存在下发生聚合,形成聚氯乙烯。过去一直认为氯乙烯毒性较低,对人的健康威胁不大,中毒的主要表现为麻醉作用,接触高浓度后,呈头晕、嗜睡、失定向力、步态不稳、视物模糊、手足发麻,但氯乙烯的麻醉作用比四氯化碳或三氯甲烷要弱。另外,氯乙烯还能引起手指末节肢端溶骨症和皮肤类硬皮病变化,但这些作用,在脱离接触后都可以得到改善。然而,近几年来国外一些期刊接二连三地报导了氯乙 PVC production and use of the most widely used synthetic plastics, PVC production and the first to produce vinyl chloride monomer, vinyl chloride monomer by heating and pressure in the presence of catalyst polymerization occurred, the formation of polyvinyl chloride. In the past, vinyl chloride was considered less toxic and not a threat to human health. The main manifestation of poisoning was narcosis. After exposure to high concentrations, it showed dizziness, drowsiness, disorientation, unstable gait, blurred vision, Ma, but the anesthetic effect of vinyl chloride is weaker than carbon tetrachloride or chloroform. In addition, vinyl chloride can also cause limb acral osteolysis and cutaneous scleroderma changes, but these effects, after disengagement can be improved. However, in recent years, some periodicals in foreign countries have reported Chloride B successively