Silicone Chain Extender for Recycled Polyethylene-terephthalate with Higher Flexibility  

作　　者：WANG Li HUANG Ronghua 王莉;HAO Tonghui;HUANG Long;HUANG Ji;黄容华(North China University of Water Resources and Electric Power,Zhengzhou 450046,China;School of Power&Mechanical Engineering,Wuhan University,Wuhan 430072,China;School of Materials Science&Engineering,Hubei University,Wuhan 430062,China;Engineering Center of New Tobacco Product,China Tobacco Hubei Industrial Co Ltd,Wuhan 430040,China)

机构地区：[1]North China University of Water Resources and Electric Power,Zhengzhou 450046,China [2]School of Power&Mechanical Engineering,Wuhan University,Wuhan 430072,China [3]School of Materials Science&Engineering,Hubei University,Wuhan 430062,China [4]Engineering Center of New Tobacco Product,China Tobacco Hubei Industrial Co Ltd,Wuhan 430040,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2019年第5期1228-1232,共5页武汉理工大学学报（材料科学英文版）

摘　　要：To decrease the modulus and increase the mechanical properties of recycled PET by introducing the flexible segments, the recycled polyethylene-terephthalate(PET) was modified by the chain extender produced with 2, 4, 6, 8-tetramethyl-2, 4, 6, 8-tetra(2, 3-epoxypropoxy) propylcyclotetrasiloxane by the hydrosilylation reaction. Different percentages of chain extender were used in order to investigate the effect of chain extender content on the modulus of PET. The dynamic mechanical analysis was performed on PET samples, which showed that Tg of PET was firstly raised by the addition of chain extender and then decreased. Small amplitude shearing test performed on PET samples confirmed that the addition of the flexible segments could remarkably decrease the modulus of PET, which would be helpful for the extrusion process. The entanglements from branches were also influenced by the addition of extender.To decrease the modulus and increase the mechanical properties of recycled PET by introducing the flexible segments, the recycled polyethylene-terephthalate(PET) was modified by the chain extender produced with 2, 4, 6, 8-tetramethyl-2, 4, 6, 8-tetra(2, 3-epoxypropoxy) propylcyclotetrasiloxane by the hydrosilylation reaction. Different percentages of chain extender were used in order to investigate the effect of chain extender content on the modulus of PET. The dynamic mechanical analysis was performed on PET samples, which showed that Tg of PET was firstly raised by the addition of chain extender and then decreased. Small amplitude shearing test performed on PET samples confirmed that the addition of the flexible segments could remarkably decrease the modulus of PET, which would be helpful for the extrusion process. The entanglements from branches were also influenced by the addition of extender.

关 键 词：PET chain EXTENDER SILICONE FLEXIBILITY BRANCHES 

分 类 号：TQ3[化学工程]