聚酯特性黏度影响因素的研究

Study on the Influencing Factors of Intrinsic Viscosity of Polyester

研究了聚酯的熔融温度、熔融时间、有氧熔融以及洗涤工艺对聚酯的特性黏度的影响。通过实验发现:聚酯随着熔融温度的升高和熔融时间的增长,特性黏度逐渐降低;有氧熔融时的特性黏度有所增长;经洗涤的聚酯随熔融时间变化特性黏度变化较小,有利于回收利用。

The effect of melting temperature,melting time,aerobic melting and washing process on the intrinsic viscosity of polyester was studied.The experiment results show that： with increasing of the melting temperature and melting time,the intrinsic viscosity of polyester decreases gradually;the intrinsic viscosity increases through adopting aerobic melting;the intrinsic viscosity of washed polyester changes little under different melting time,which is a conducive condition for recycling.