Shanghai Daoqin Plastics Co., Ltd.

front introduction types full pet材 material bottle , large hot 烈围观, therefore use simple introduction pet structure and 差示扫描 hot amount method DSC曲线 analysis methods:

1, PET, full 称Polythylene terephthalate, in polyethylene terephthalate (PET), thermoplastic polyester, 俗称涤纶 resin. structure lower:
2, PET DSC testing 曲线如 lower （图 sheet/slice 源于Ptonline ）, from 曲线形状 can 初步断定 is certain PET材 material rise temperature 曲线. rise temperature process in, 首先出现玻璃化转变（台阶状）, rear rise temperature 出现放 hot 峰, is is very has 意思, this is cold crystallization （ rise temperature process in crystallization hot ）, rear rise temperature, 出现 一 吸 hot is PET材 material 熔化峰（各 toward property toward toward property liquid 态转变, crystallization property material has melting point ）. 【想 need more more DSC related Knowledge 请猛烈点击 this 里】

From Ptonline

from upper in 看以看出PET玻璃转变 temperature degree Tg is 70摄氏 degree left right, cold crystallization temperature degree 125摄氏 degree, has Tg also can cold crystallization, 说明此PET is type semi crystallization property polymer （semi-crystalline ）, melting point 240摄氏 degree left right. attention/notes, different pet材DSC曲线 has relatively large 差异, versus temperature degree 差异也 relatively large, lower is 一参考例子, can cover/cap full. about/regarding PET and PBT difference, large can detailed reading outer 写 文章: PBT AND PET POLYESTER: THE DIFFERENCE CRYSTALLINITY MAKES

3, PET products: 60% made fiber, 30% made plastics bottle, 10% its it. （ in the future again detailed introduction PET application ）