Study on Prepare of Ultrahigh Molecular Weight Polyethylene with Molecular Weight of PE Controllable as Engineering Plastic

Wang Haihua; Li Jieqiu; Lu Zejian; Zhang Qixing

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Study on Prepare of Ultrahigh Molecular Weight Polyethylene with Molecular Weight of PE Controllable as Engineering Plastic

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- Study on Prepare of Ultrahigh Molecular Weight Polyethylene with Molecular Weight of PE Controllable as Engineering Plastic
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 35, Issue S2, Pages: 33-38(1996)
- 作者机构：
  
  中山大学高分子研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1996，
  
  Published Online：25 December 1996，
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Wang Haihua, Li Jieqiu, Lu Zejian, et al. Study on Prepare of Ultrahigh Molecular Weight Polyethylene with Molecular Weight of PE Controllable as Engineering Plastic. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 35(S2):33-38(1996)
DOI：

Wang Haihua, Li Jieqiu, Lu Zejian, et al. Study on Prepare of Ultrahigh Molecular Weight Polyethylene with Molecular Weight of PE Controllable as Engineering Plastic. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 35(S2):33-38(1996) DOI：

摘要

采用新型高活性钛系催化剂，调节催化剂中锌化合物含量和相关的聚合方法，可有效地按需要控制超高分子量聚乙烯（ＵＭＷＰＥ）的分子量和制得颗粒形态良好的产物．催化剂组份中ＺｎＣｌ２／钛化物（摩尔比）＝０．１～１０之间选择，ＵＭＷＰＥ的分子量Ｍｗ可在６０×１０４～６１０×１０４范围调控；并保持３５０～８１０ｋｇ（ＰＥ）／ｇ（Ｔｉ）的高活性．制得了２０～２００目颗粒≥９８％重量的良好产品．对制得ＵＭＷＰＥ产品的ＤＳＣ、Ｘ－射线衍射测定表明具有良好的结晶性，结晶度为６８％～７２．４％，熔点为１３４～１３８℃；缺口冲击强度为１７６．４～１９２．１ｋＪ／ｍ２

Abstract

The prepare of UMWPE with molecular weight of PE controllable has been studied in the presence of TiCl 4/MgCl 2/ZnCl 2/SiCl 4/alcohol/AlR 3 highly active catalyst which was prepared by comolling-reaction procedure. When mole ratio of ZnCl 2/Ti equaled 0 1 to 10

highly active catalyst gave a catalytic efficiency of 350～810kg(PE)/g(Ti)

resulting of UMWPE with molecular weight w ranging from 60 to 610×10 4 as well as weight distribution of PE ≥98% from 20 to 200 mesh. The products of UMWPE were characterized by DSC and X-ray pattern to be high density PE with crystallinity of 68% to 72.4% and T m 134 to 138℃. The UMWPE spciments with various molecular weights exhibited very high impact strength with 176 4～192 1 kJ/m 2.

关键词

&nbsp超高分子量聚乙烯高活性催化剂ZnCl2乙烯聚合工程塑料TiCl

Keywords

&nbspultrahigh molecular weight polyethylenehighly active catalystZnCl 2polymerization of ethyleneengineering plasticsTiCl 4

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