塑料及其制品在一般条件下对人体无害,但若长期接触或加工某些塑料,人体就会受到不同程度的危害。这些危害主要来自合成树脂所含的游离单体、所使用的添加剂和填充剂。 合成树脂本身的毒性比较低或无毒。热固性塑料因本身含有低分子物质,在成型过程中产生挥发物,人们长期接触或 Plastic and its products are not harmful to the human body under normal conditions, but the body will be endangered to varying degrees if certain plastics are exposed or processed for a long time. These hazards come mainly from the free monomers contained in the synthetic resins, the additives and fillers used. The toxicity of synthetic resin itself is relatively low or non-toxic. Thermosetting plastic because of its low molecular weight substances, volatile substances in the molding process, long-term exposure to people or