Structure of CPE rubber |
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DOI: |
Key Words: CPE;chlorine distribution;molecular weight;residule crystallinity;rheological properties |
Author Name | Affiliation | YI Hong-ling | Qingdao University of Science and Technology | HAO Meng-xuan | Qingdao University of Science and Technology | LIU Yu-zhen | Qingdao University of Science and Technology |
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Abstract: |
The chlorine distribution,molecular weight and its distribution,residule crystallinity and rheological properties of different CPE rubbers were investigated by C-NMR,GPC and DSC.The results showed that the chlorine atom was attached to the molecular chain in single substituted way;the order of Mw for 4 different CPE rubbers was as follows:CPE6335>CPE6135>CPE6235>CPE140B,and the higher the Mw,the lower the Mooney viscosity of CPE rubber;the higher chlorine content and more uniform distribution of chlorine atom in CPE rubber,the lower residule crystallinity;and CPE rubber melt was a shear thinning fluid. |
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