厂家(产地)埃克森美孚	牌号PP 35MW647
销售方式品牌经销	类型标准料
加工级别模塑、 包覆	特性级别抗紫外线、 标准级、 高结晶（HCPP）
用途级别板材级、 医用级、 瓶盖专用料	品牌PP 35MW647

pp 35mw647
pp 35mw647
pp the production process of polypropylene copolymer can be divided into two kinds according to the different catalysts. one is metallocene catalyst, the other is an improved ziegler-natta efficient catalyst. the metallocene catalyst has only one active center compared with the ziegler-natta catalyst, while the ziegler-natta catalyst has multiple active sites. metallocene catalysts can precisely control molecular weight and its distribution, the content of monomer and its distribution and crystal structure on polymer chains. the application of ziegler-natta catalyst in pp copolymerization is characterized by simple production process, low energy consumption, high molecular nucleation and polymer performance.
crosslinking modification
the crosslinking modification of polypropylene is an effective way to improve the thermal deformation temperature of polypropylene, and also improve the mechanical properties of polypropylene. crosslinking modification mainly includes radiation crosslinking and chemical crosslinking. radiation crosslinking is a free radical and cross-linking reaction of the molecular chain of polypropylene under the action of high energy rays. chemical crosslinking is generally used to add peroxide to pp as an initiator, and the crosslinking agent is added to the crosslinking reaction. during the crosslinking modification of polypropylene, the degradation and crosslinking reaction exist simultaneously. the crosslinking efficiency is relatively low when using radiation crosslinking, while chemical crosslinking is generally used to promote crosslinking reaction by adding auxiliary crosslinking system with 
pp 35mw647

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东莞市丽德塑料有限公司
邓女士
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广东 东莞 樟木头镇