添加剂对阻燃聚乙烯体系性能的影响

Effect of additives on magnesium carbonate and aluminium hydroxide compound with flame-retardant polyethylene system

为提高碳酸镁/氢氧化铝复配阻燃聚乙烯体系的性能,将几种常用协效剂和两种偶联剂添加到阻燃体系中,测量其阻燃性能及力学性能。实验表明:几种添加剂对提高体系的氧指数贡献相当;白炭黑可以明显提高体系的拉伸强度,硼酸锌对体系的断裂伸长率影响最小。对于拉伸强度,使用铝酸酯偶联剂效果优于硅烷偶联剂。

To improve the property of magnesium carbonate and aluminium hydroxide compound with flame-retardant PE system,several synergistic agents and two kind of coupling agents were added into the flame-retardant PE system.The fire retardant property and mechanical property were tested.It indicates that several synergistic agents have similar contribution to oxygen index of the system,silica white can improve the tensile strength evidently,and zinc borate has little influence on the elongation at break of the system.As far as the tensile strength is concerned,aluminate coupling agent is better than silane coupling agent.