热塑性弹性体-柔性PPO-SABIC(GE) WCD801A-BK 随着欧盟环保(RoHS和WEEE)指令的颁布执行,在电线电缆生产领域,目前已经有用高性能的聚苯醚(PPO)树脂材料取代传统的聚氯乙烯(PVC)/PE材料制造线缆护套的实例。 GE的柔性Noryl树脂材料顺应了市场摒弃卤化阻燃剂的潮流,因为这种材料本身就具有出色的阻燃特性、和PVC材料相比具有更好的抗化学腐蚀性和较低的比重,其柔韧性能够保证线材具有很好的完整性和外观。另外由于柔性Noryl 树脂容易加工、生产周期短,而且由于本身预着色而不需要喷漆等二次加工。 - ^+ D% {- P P' I! k6 K1 f
Noryl is a blend of polyphenylene oxide (PPO) and polystyrene (PS) that was developed by General Electric Plastics in 1966 (now owned by SABIC. It is a rare example of a homogeneous mixture of the two polymers. Most polymers are incompatible with one another, so tend to produce separate phases when mixed. The compatibility of the two polymers in Noryl is caused by the presence of a benzene ring in the repeat units of both chains.