聚酯催化剂对聚酯产品性能的影响
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摘要
采用三釜工艺技术,分别以有机钛系、锑系物质作为催化剂来生产聚酯产品——Ti-PET和Sb-PET。在保证特性黏度(即相对分子质量)相同的情况下,探究催化剂对聚酯产品的色相、熔融行为、结晶性能和热稳定性的影响。结果表明:Ti-PET的端羧基含量、二甘醇含量明显低于Sb-PET,其色相L~*值、b~*值则高于Sb-PET,基本满足聚酯纤维对色相的要求;Ti-PET的结晶性能优于SbPET;两种切片的热稳定性基本一致,均满足成型及后加工的要求。
Polyester products, Ti-PET and Ti-PET were produced by using the three reactors process technology and using organic titanium and antimony as catalysts, respectively. Under the same intrinsic viscosity(i.e. relative molecular mass), the influence of catalyst on the color phase, melting behavior,crystallization performance and thermal stability of polyester products was investigated. The results show that the content of terminal carboxyl group and diethylene glycol content of Ti-PET are lower than that of Sb-PET. Its L~* value and b~* value are higher than that of Sb-PET, which basically meet the requirements of polyester fiber for color phase. The crystallization performance of Ti-PET is better than that of Sb-PET.The thermal stability of the two slices is basically the same, which meets the requirements of forming and post-processing.
Polyester products, Ti-PET and Ti-PET were produced by using the three reactors process technology and using organic titanium and antimony as catalysts, respectively. Under the same intrinsic viscosity(i.e. relative molecular mass), the influence of catalyst on the color phase, melting behavior,crystallization performance and thermal stability of polyester products was investigated. The results show that the content of terminal carboxyl group and diethylene glycol content of Ti-PET are lower than that of Sb-PET. Its L~* value and b~* value are higher than that of Sb-PET, which basically meet the requirements of polyester fiber for color phase. The crystallization performance of Ti-PET is better than that of Sb-PET.The thermal stability of the two slices is basically the same, which meets the requirements of forming and post-processing.
引文
[1]张旭磊.环保型钛系聚酯催化剂的工业化应用[D].天津:天津大学,2017.
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[3]朱雪峰,陈文生,孙建新,等.纳米二氧化钛聚酯催化剂的研究进展[J].聚酯工业, 2013, 26(4):5.
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[5]章瑛虹.钛系聚酯催化剂活性的影响因素研究[J].合成纤维工业,2012, 35(4):8-9.
[6]杨波,陈蓝天.稳定剂在聚酯生产中的应用[J].聚酯工业, 2003, 16(6):5-7.
[7]陈颖. PET缩聚用镁/钛/凹凸棒土复合催化剂的制备、表征及催化活性[D].上海:东华大学, 2016.
[8]贺江平. PET/SiO2纳米复合材料的制备与性能研究[D].湘潭:湘潭大学, 2007.
[2]赵玲,戴迎春,沈瀛坪,等.聚酯工业生产中催化剂的作用[J].聚酯工业, 1999, 12(4):12-13.
[3]朱雪峰,陈文生,孙建新,等.纳米二氧化钛聚酯催化剂的研究进展[J].聚酯工业, 2013, 26(4):5.
[4]曹善文,李朝晖,付乐军. PET缩聚催化剂的发展及展望[J].聚酯工业, 2004, 17(5):5-7.
[5]章瑛虹.钛系聚酯催化剂活性的影响因素研究[J].合成纤维工业,2012, 35(4):8-9.
[6]杨波,陈蓝天.稳定剂在聚酯生产中的应用[J].聚酯工业, 2003, 16(6):5-7.
[7]陈颖. PET缩聚用镁/钛/凹凸棒土复合催化剂的制备、表征及催化活性[D].上海:东华大学, 2016.
[8]贺江平. PET/SiO2纳米复合材料的制备与性能研究[D].湘潭:湘潭大学, 2007.