PP K8065台化

台化主要业务：台化塑膠事業部主要業務為聚苯乙烯膠粒(PS) 、ABS膠粒、ASA膠粒、SAN膠粒(苯乙烯-丙烯睛共聚合物)、聚丙烯膠粒(PP)、聚碳酸酯(PC)以及 PC/ABS等合膠之製造與銷售，由於積極拓展市場及六輕上游原料廠陸續完成，形成上下游有力的整合，展望未來本部產品營銷可望繼續成長，希望本公司產品的加入，能為我國塑膠下游加工業提供品質可靠、料源穩定、價格合理之優質原料與技術支援，共同提高整體產業之競爭力而努力。
PP has excellent chemical stability and is inert to most acids, bases, salts and oxidants. For example, it is stable in concentrated phosphoric acid, hydrochloric acid, 40% sulfuric acid and their salts at 100 ℃. Only a few strong oxidants such as fuming sulfuric acid can change them. PP is a non-polar compound, which is very stable to polar solvents, such as alcohol, phenol, aldehyde, ketone and most carboxylic acids, but it is easy to dissolve or swell in some non-polar organic solvents

PP的化学稳定性优异，对大多数酸、碱、盐、氧化剂都显惰性。例如在100℃的浓磷酸、盐酸、40%硫酸及其它们的盐类溶液中都是稳定的，只有少数强氧化剂如发烟硫酸等才可能使其出现变化。PP是非极性化合物，对极性溶剂十分稳定，如醇、酚、醛、酮和大多数羧酸都不会使其溶胀，但在部分非极性**溶剂中容易溶解或溶胀

PP的优点：
PP虽然比回收PE有较高的机械强度和模量，但是像新PP树脂一样，回收PP的耐冲击性能尤其是耐应力开裂性能差，且低温性能差。这些性能特征是由PP聚集态结构和大分子链构造决定的，因此可用聚乙烯进行改性。回收PE(LDPE、HDPE)与收PP制共混物时，如果PP回收料比较多，可以直接制备合金，如在PP 中掺人10％一25％HDPE，其改性后的共混物在—20℃时落球冲击强度比PP提高8倍以上，而且加工流动性增加，可适用于大型容器的成型。从结构上来说PE的加入破坏了PP的结晶如大球晶碎化，也降低了PP的结晶度；若在体系中再加入EPDM。约5％可提高PP与PE的相容性，强度得到提高；加入少量EPR橡胶也可提高材料的冲击性能。

The comprehensive properties of PP are better than that of PE. PP products are light in weight, good in toughness and good in chemical resistance. Disadvantages of PP: low dimensional accuracy, insufficient rigidity, poor weather resistance, easy to produce "copper damage", it has the phenomenon of t shrinkage, easy aging, brittle, easy deformation after demoulding. In daily life, the commonly used fresh-kee box is made of PP material. In order to prevent photoaging, it is necessary to add UV absorber into PP, which can transform the UV absorption of 290 ~ 400nm into non destructive long wavelength light. For the PP plastic products buried in the soil or used indoors in the dark, only the main and auxiliary antioxidants can be added, and the ultraviolet absorber is not needed. The shrinkage and crystallinity of PP are lower than that of PE. PP has a certain permeability to oxygen, carbon dioxide and water vapor. Compared with nylon PA and polyester PET, PP is much worse than nylon PA and polyester PET, but it is much worse for high barrier plastics such as PVDC and EVOH. But compared with other non plastic materials, its air tightness is quite good. The air tightness can be greatly improved by adding barrier materials or coating barrier plastics on the surface. PP is a non-polar polymer with good properties