摘要
通过共聚法制备了不同1,4-环己烷二甲醇(CHDM)含量的聚对苯二甲酸乙二醇-1,4-环己烷二甲醇酯(PETG)。通过旋转流变仪、差示扫描量热仪及万能试验机等研究了CHDM含量对共聚酯流变性能、热性能及力学性能的影响。结果表明,随CHDM含量的增加,相同温度下的PETG共聚酯动力黏度增加,结晶能力下降,当CHDM含量达到20%时,共聚物由结晶聚合物转变为非晶聚合物。随着CHDM含量的增加,PETG共聚酯的拉伸强度增加而弹性模量和断裂伸长率下降,透光率增加而雾度下降。
Using the copolymerization process,polyethylene terephthalate-1,4-cyclohexanediol ester(PETG)was created with varying concentrations of 1,4-cyclohexanedimethanol(CHDM)content.The impact of CHDM concentration on the rheological,thermal,and mechanical characteristics of copolyesters was investigated through the use of a universal testing machine,differential scanning calorimeter,and rotary rheometer.The findings demonstrated that while PETG s ability to crystallize reduced,dynamic viscosity at the same temperature increased as CHDM content increased.The copolymer changed from crystalline polymer to amorphous polymer when the CHDM content reached 20%.The tensile strength of PETG copolyester increases as the CHDM content increases,whereas the transmittance increases,the haze decreases,and the elastic modulus and elongation at break decrease.
作者
石雪龙
王余伟
夏峰伟
Shi Xuelong;Wang Yuwei;Xia Fengwei(Research Institute of Sinopec Yizheng Chemical Fibre Co.,Ltd.,Yizheng Jiangsu 211900,China)
出处
《合成技术及应用》
CAS
2024年第1期28-32,共5页
Synthetic Technology & Application