生物基半芳香族共聚酰胺PA5T/56与脂肪族聚酰胺PA56的性能对比  

Performance comparison of bio-based semi-aromatic copolyamide PA5T/56 and aliphatic polyamide PA56

作　　者：张海洋 郭小炜 宋云鹤 田卫东 管清宝 游正伟 ZHANG Haiyang;GUO Xiaowei;SONG Yunhe;TIAN Weidong;GUAN Qingbao;YOU Zhengwei(College of Materials Science and Engineering,Donghua University,Shanghai,China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai,China;Heilongjiang EPPEN New Materials Co.,Ltd.,Daqing,Heilongjiang,China;Chengdu Shenghong New Materials Technology Co.,Ltd.,Chengdu,Sichuan,China)

机构地区：[1]东华大学材料科学与工程学院,上海 [2]东华大学纤维材料改性国家重点实验室,上海 [3]黑龙江伊品新材料有限公司,黑龙江大庆 [4]成都升宏新材料科技有限公司,四川成都

出　　处：《东华大学学报（自然科学版）》2024年第3期39-44,共6页Journal of Donghua University(Natural Science)

基　　金：国家重点研发计划(2021YFC2101800);中央高校基本科研业务费专项资金(CUSF-DH-T-2023034)。

摘　　要：生物基聚酰胺PA56凭借其绿色低碳的原料来源以及与商业化PA66相近的综合性能而受到关注,但受限于脂肪族的柔性主链结构,无法满足高温场景下的使用需求。为解决上述问题,引入对苯二甲酸构筑生物基半芳香族共聚酰胺PA5T/56,对PA5T/56的结构及性能进行系统研究,并与生物基脂肪族聚酰胺PA56进行对比分析。红外光谱与核磁共振氢谱的表征结果验证了PA5T/56与PA56结构上的差异;相比PA56,PA5T/56具有更高的玻璃化转变温度(t_(g)=113℃)、更优的热稳定性(t_(d,5%)=392℃,t_(dmax)=423℃),以及更佳的热机械性能,同时其在高温下具有适宜加工的熔体黏度(<10^(3)Pa·s),这些优势赋予生物基半芳香族PA5T/56广阔的应用前景。Bio-based PA56 has obtained much more attention thanks to its environmentally friendly raw material sources and comparable overall properties to commercial PA66.However,its usability in high-temperature scenarios is limited by the aliphatic nature of its monomeric structure.Therefore,the PA5T/56 incorporating terephthalic acid monomers was investigated to broaden its range of applications.This study focuses on the characterization of the bio-based semi-aromatic PA5T/56,which was synthesized by terephthalic acid monomer.A comparison was made between the structure and properties of PA5T/56 and bio-based aliphatic PA56.FTIR and NMR results confirm the structural differences of bio-based PA5T/56.In comparison to bio-based aliphatic PA56,bio-based semi-aromatic PA5T/56 exhibits a higher glass transition temperature(t_(g)=113℃),exceptional thermal stability(t_(d,5%)=392℃,t_(dmax)=423℃),as well as superior thermomechanical properties and melt viscosity suitable for processing(<10^(3)Pa·s).Therefore,PA5T/56 is endowed with broaden application scenarios by virtue of its excellent performance.

关 键 词：生物基聚酰胺 半芳香族聚酰胺 脂肪族聚酰胺 熔融结晶行为 热稳定性 热机械性能 流变行为 

分 类 号：O633.223[理学—高分子化学]