Tus qauv ua qauv ntawm tshuaj polyester

Cov khoom siv tseem ceeb ntawm polyester yog polyethylene terephthalate. Los ntawm qhov pom ntawm polyester cov sib xyaw molecular, nws yog cov luv luv aliphatic hydrocarbon chains, ester pawg, benzene rings, thiab cawv-tso tseg hydroxyl pawg. Ntxiv nrog rau qhov muaj ob txoj cawv-kawg-tawm-kawg hydroxyl pawg nyob rau hauv lub polyester, tsis muaj lwm pawg ncov qaum, yog li qhov hydrophilicity ntawm polyester fiber yog qhov tsis zoo. Cov roj ntsha polyester muaj li 46% ester pawg. Cov pawg ester tuaj yeem ua hydrolyzed thiab thermally tawg thaum qhov kub siab tshaj 200 ℃, thiab yuav muab saponified thaum muaj zog alkalis, uas yuav txo qhov degree ntawm polymerization. Qhov ntau npaum li cas ntawm xab npum thiab ntxuav hmoov hauv qab 100 ℃ tsis muaj kev cuam tshuam ntawm polyester. Cuam Tshuam; polyester lwg me me kuj tseem muaj cov aliphatic hydrocarbon chains, uas tuaj yeem ua rau cov lwg me hluav taws xob polyester muaj qee qhov hloov tau yooj yim, tab sis vim tias muaj cov benzene rings hauv cov polyester molecules uas tsis tuaj yeem tig tau sab hauv, cov polyester macromolecules yeej yooj yim lwg me me, thiab cov xov tooj molecular yooj yim rau tswj Kab hom. Yog li no, polyester macromolecules tau yooj yim los ua cov ntawv ci nyob hauv cov mob no, yog li cov muaju thiab kev coj ntawm polyester yog qhov siab heev.