PC EXTC8143

PC EXTC8143 LNP? THERMOCOMP compound SABIC Innovative Plastics
PC EXTC8143 LNP? THERMOCOMP compound SABIC Innovative Plastics

本公司承诺所售原料均为原厂原包假一赔十

东莞永大塑胶原料有限公司
主营产品：

塑胶原料 工程塑胶 聚酰胺 PA66耐磨损 PA66超韧耐寒级 PA66食品级 PA66加玻纤 PA66增韧级 PA66阻燃防火 POM聚甲醛 高粘度POM 坚韧级POM 耐磨损POM 高韧性POM 抗紫外线POM 加玻纤POM 低翘曲POM
工程塑胶：EVA、PC、POM、PA6、PA66、PEEK、COC、PBT、PET PC/ABS、PPS、PPO、LCP；PC
热弹性体：K胶、TPE、TPR、PVC、TPU、TPV、TPX、SBS；
通用塑胶：ABS、PMMA、PP、PE、AS、HDPE、LDPE。
 特种料：   PEI、PTFE、PVDF
本公司所销售之塑胶原料均可提供原厂的物性表，UL MSDS SGS COC 欢迎来电咨询！

备注：公司长期销售塑胶原料/原厂原包，25千克/包，符合ROHS认证标准，25千克起。质量有保证

 

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聚碳酸酯 (Polycarbonates，PC)

聚碳酸酯（PC）是分子主链中含有碳酸酯结构的工程塑料，于1957年工业化，是一种无定型、无臭、无毒、高度透明的无色或微黄色热塑性工程塑料，具有优良的物理机械性能，尤其是耐冲击性优异。PC分子主链上的苯撑基是大共轭的芳香环，是分子主链上不能弯曲的刚性部分，阻碍分子的内旋转。醚基可增大链的 柔曲性；极性较大的羰基增加了分子间力，使分子链刚性有所加强，而电性能下降。酯基也是极性基，只能加大分子链的刚性，而且是PC极易溶于极性有机溶剂的一个重要原因。几个基团的综合作用，使PC分子链的刚性很大，致使Tg很较高，Tm、粘度也较高。

PC的生产方法：

商业上最重要的聚碳酸酯是以双酚A为原料，与光气反应或与碳酸二苯酯交换反应制成。

(1) 酯交换法

此法以双酚A和碳酸二苯酯为原料，分两步进行熔融缩聚，原理与涤纶生产相似。采用单体非等当量比，碳酸二苯酯过量进行端基封锁，排出苯酚以达到所需分子量。