CHDM

Chemical Structural Characterization of PETG and Measurement of CHDM Content

PETG化学结构的表征和CHDM含量的测定

The crystallization ability of PETG copolyester and its fiber strength decrease with the increasing of CHDM content .

随CHDM含量的增加，共聚酯结晶性能下降，纤维强度下降。共聚酯纤维具有优异的弯曲回弹性和染色性能，且随CHDM含量的增加而提高。

The effects of CHDM content and isomer ratio on the thermal properties of PETG were studied by DTA and DSC .

采用DTA，DSC等手段研究了不同CHDM含量及其异构体比例对PETG热性能的影响。

When the content of CHDM in PECT copolyester increased the copolyester Tg increased in line , Tm , Tc decreased , crystal speed become quick .

PECT共聚酯随着CHDM含量的增加，Tg线形增加，Tm下降，冷结晶温度Tc降低，结晶速率变快。

Series of 1,4-cyclohexane dimethanol ( CHDM ) and IPA modified poly ( ethylene terephthalate ) copolymers were synthesized according to different IPA and CHDM content .

采用1，4-环己烷二甲醇（CHDM），间苯二甲酸改性PET，按照不同的CHDM，IPA含量合成出了一系列共聚酯。

Partially substituting for ethylene glycol ( EG ), 1,4-cyclohexanedimethanol ( CHDM ) was copolymerized with terephthalic acid ( PTA ) to produce copolyesters ( PETG ) .

以1，4-环己烷二甲醇（CHDM）部分替代乙二醇（EG）与对苯二甲酸（PTA）共聚合成共聚酯（PETG）。

The cooling crystallization peak of PETG could be observed at the temperature of 185-120 ℃ when the molar fraction of CHDM was not more than 13 . 6 % , and only at the cooling rate of 2 ℃ / min could the crystallizing exothermic peak be observed .

CHDM的摩尔分数不高于13.6%时，在185-120℃范围内可以观察到PETG的冷却结晶峰，而且只有在2℃／min冷却速率下才能观察到结晶放热峰。