阻燃抗静电聚烯烃板材的制备与性能研究

Preparation and properties of flame⁃retarded anti⁃static polyolefin plates

在聚烯烃树脂中加入无卤阻燃剂MRP⁃1400、炭黑及聚乙烯基弹性体(POE)制得了阻燃抗静电聚烯烃材料,研究了阻燃剂、炭黑和POE含量对材料性能的影响。结果表明,MRP⁃1400的加入能提高材料的阻燃性能,其含量为20%(质量分数,下同)时(对应磷含量为8%)材料达到UL 94 V⁃0级,可以通过MT 113—1995酒精喷灯测试;当导电炭黑含量为6%时,材料满足MT 113—1995抗静电要求;POE能进一步优化材料的力学性能,POE含量为5%时可制得综合性能较好的阻燃抗静电材料,其缺口冲击强度为35 kJ/m^(2),断裂伸长率为315%;动态疲劳实验结果表明,所开发材料的耐疲劳性能优异,动态疲劳寿命大于120万次。

A flame⁃retarded anti⁃static polyolefin material was prepared using halogen⁃free retardant(MRP⁃1400),carbon black,and polyethylene elastomer(POE)as additives,and the effects of these three additives on the mechanical proper⁃ties of the flame⁃retarded anti⁃static material were investigated.The results indicated that the addition of MRP⁃1400 en⁃hanced the flame⁃retardant properties of the material significantly.When 20 wt%MRP⁃1400(corresponding to 8 wt%phosphorus),the material reached a UL 94 V⁃0 classification in the vertical burning test and passed the alcohol blow lamp examination according to Standard MT 113⁃1995.Moreover,when 6 wt%carbon black was incorporated,the anti⁃static properties of the material fulfilled the requirements specified in Standard MT 113⁃1995.The mechanical properties of the material increased with the addition of POE.The material achieved optimal overall performance when 5 wt%POE was added,achieving notched Izod impact strength of 35 kJ/m^(2) and elongation at break of 315%.The material ex⁃hibited good fatigue resistance with a dynamic fatigue life over 1.2 million times.