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介绍了半芳香族聚酰胺的研究背景,指出传统脂肪族聚酰胺耐热性不足,而纯PA4T因热分解温度低于熔融温度无法加工。研究通过引入PA4I链段制备PA4T/4I共聚物,采用FTIR、NMR表征结构,利用DSC、TG、紫外分光光度及耐溶剂性测试系统研究PA4I含量对热性能、透光率及耐溶剂性的影响,并运用KAS、FWO、Tang方法计算热降解活化能,通过Coats-Redfern法探究降解机理,为PA4T基耐高温聚酰胺的设计与应用提供理论支撑。
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刘冰肖1 ,马立群1,王斌权1,罗亨京1,魏思田1,王忠强2,张研1,刘欣珊1,李梦军1
(1.太原工业学院,山西省聚酰胺工程技术创新中心,太原 030051;2.广东中塑新材料股份有限公司,广东东莞 523879 )
DOI:10.3969/j.issn.1001-3539.2026.05.006
表1PA4T/4I和PA4I的原料配比Tab. 1Ratio of raw materials for PA4T/4I and PA4I
Note:n is amount of substance.
表2PA4T/4I和PA4T的热降解外推起始温度Tab. 2Extrapolated onset temperatures of thermal degradation for PA4T/4I and PA4T
表3PA4T/4I和PA4I的耐溶剂性Tab. 3Solvent resistance of PA4T/4I and PA4I
Notes: "+" indicates solubility; "-" indicates insolubility; "+-" indicates swelling.
表4由KAS,FWO和Tang方法计算得到的PA4T/4I-5∶5和PA4I的热降解活化能Tab. 4Thermal degradation activation energies of PA4T/4I-5∶5 and PA4I calculated by the KAS,FWO,and Tang methods
Notes:E is thermal degradation activation energy; R2 is coefficient of determination.
表5常见的机理函数g()Tab. 5Common mechanism functions g()
Notes: eq.(1), eq.(2), and eq.(3) denote the square root, cube root, and fourth root of -ln(1-α) in equations, respectively; m represents the order of the power law model.
表6PA4T/4I-5∶5和PA4I在10 ℃/min升温速率下的热降解表观活化能Tab. 6Apparent activation energy for thermal degradation of PA4T/4I-5∶5 and PA4I at a heating rate of 10 ℃/min
引用本文:刘冰肖,马立群,王斌权,等.基于1,4-丁二胺的半芳香族聚酰胺4T/4I合成及性能[J].工程塑料应用,2026,54(5):51-59.(LIU Bingxiao,MA Liqun,WANG Binquan,et al. Synthesis and properties of semi-aromatic polyamide 4T/4I based on 1,4-butanediamine[J]. Engineering Plastics Application,2026,54(5):51-59.)
通讯作者:刘冰肖,博士,主要从事生物基材料开发
基金信息:太原市关键核心技术攻关“揭榜挂帅”项目(2024TYJB0145),山西省基础研究计划资助项目(202303021222305),太原工业学院人才引进博士(博士后)科研资助项目(2022KJ044)
中图分类号:TQ323.6