摘要
研究了稀土偶联剂 (REC)处理对PP/氢氧化镁 (Mg(OH) 2 )体系的燃烧性能、流动性能、力学性能及老化性能的影响。未经处理的Mg(OH) 2 在填充量超过 5 0 %时 ,PP/Mg(OH) 2 体系的OI≥ 2 8.5 ,但这时冲击强度不足纯PP的 30 % ,熔体流动速率低于 0 .6g/1 0min ;而填料用 2 .5 % (重量 )REC处理后 ,填充量为 5 0 %的体系冲击强度接近纯PP ,MFR达 2 .8g/1 0min ;REC对Mg(OH) 2 有明显改性作用。Mg(OH) 2 对体系光氧老化过程有加速作用 ,而对热氧老化过程有阻滞作用 ;稀土偶联剂对体系光氧老化过程有轻微的促进作用 。
Influences of a rare earth complex (REC) as a coupling agent of Mg(OH) 2 on the flame retardance, flowability, mechanical properties and anti ageing performance of PP/Mg(OH) 2 were investigated. When the dosage of untreated Mg(OH) 2 was over 50% (mass content),the oxygen index of the system was more than 28.5, impact strength was 30% that of pure PP and melt flow rate was 0.6g/10min. Once Mg(OH) 2 was treated with rare earth coupling agent, PP/Mg(OH) 2 had almost the same impact strength as pure PP and melt flow rate 2.8 g/10min. Mg(OH) 2 can accelarate the photo oxidation and retard the thermal oxidation of PP. REC has a slight promoting action on the photo oxidation and has no obvious influence on the thermal oxidation,but has excellent modification effect on the surface of Mg(OH) 2.
出处
《中国塑料》
CAS
CSCD
北大核心
2000年第10期57-61,共5页
China Plastics
