化工进展2025，Vol.44Issue(3)：1559-1569,11.DOI:10.16085/j.issn.1000-6613.2024-0479
直接固相聚合法制备聚酰胺PA12T及性能表征
Preparation and characterization of polyamide PA12T by direct solid state polymerization
摘要
Abstract
In order to solve the problems of high energy consumption,low production efficiency and poor product quality caused by high reaction temperature and long reaction time in the process of semi-aromatic polyamide polymerization,powder semi-aromatic polyamide PA12T was prepared by direct solid state polymerization(DSSP)with PA12T salt as raw material.The influence of polymerization process on the intrinsic viscosity and nascent state of the product was systematically studied,and the optimized process conditions were obtained.Different heating rates were also used to ensure the material being always in a solid state during the polymerization process,the room temperature rose to 180℃at the rate of 3℃/min(180℃was the first predetermined temperature),and then rose from 180℃to 210℃(210℃was the second predetermined temperature)in the way of step heating with heating rate of 5℃within 30 minutes.The volume ratio of water consumption and equipment was 25g/L and holding time in the negative pressure stage was 1-6h.The maximum reaction temperature was 210℃and the time was 7-12h in the whole polymerization process.The intrinsic viscosity of the product was 0.80-1.73dL/g,the melting point was 317℃,the initial thermal decomposition temperature was 392℃,the tensile strength was 76.1MPa,the elongation at break was 39.4%,the bending strength was 42.6MPa and the notch impact strength was 9.47kJ/m2.关键词
直接固相聚合/聚合物/聚酰胺PA12T/热性能/力学性能Key words
direct solid state polymerization/polymers/polyamide PA12T/thermal properties/mechanical properties分类
化学化工引用本文复制引用
雪冰峰,张晓朦,刘民英,张烨,张世元,付鹏,崔喆,张袁铖,李鑫,庞新厂,赵蔚..直接固相聚合法制备聚酰胺PA12T及性能表征[J].化工进展,2025,44(3):1559-1569,11.基金项目
国家自然科学基金(52203051) （52203051）
河南省材料与化工研究生联合培养项目(YJS2022JD50). （YJS2022JD50）
