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

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中文摘要：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PA5 T/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,PA5 T/56 具有更高的玻璃化转变温度(tg=113℃)、更优的热稳定性(td,5%=392℃,tdmax=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(<103 Pa·s),这些优势赋予生物基半芳香族PA5T/56 广阔的应用前景.

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

外文摘要：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 PA5 T/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 PA5 T/56,which was synthesized by terephthalic acid monomer.A comparison was made between the structure and properties of PA5 T/56 and bio-based aliphatic PA56.FTIR and NMR results confirm the structural differences of bio-based PA5 T/56.In comparison to bio-based aliphatic PA56,bio-based semi-aromatic PA5 T/56 exhibits a higher glass transition temperature(tg=113℃),exceptional thermal stability(td,5%=392℃,tdmax=423℃),as well as superior thermomechanical properties and melt viscosity suitable for processing(<103 Pa·s).Therefore,PA5 T/56 is endowed with broaden application scenarios by virtue of its excellent performance.

外文关键词：

bio-based polyamidesemi-aromatic polyamidealiphatic polyamidemelt crystallization behaviorthermal stabilitythermomechanical propertyrheological behavior

作者：

张海洋、郭小炜、宋云鹤、田卫东、管清宝、游正伟

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作者单位：

东华大学材料科学与工程学院,上海

东华大学纤维材料改性国家重点实验室,上海

黑龙江伊品新材料有限公司,黑龙江大庆

成都升宏新材料科技有限公司,四川成都

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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

基金：

国家重点研发计划中央高校基本科研业务费专项

项目编号：

2021YFC2101800CUSF-DH-T-2023034

出版年：

2024

DOI：

10.19886/j.cnki.dhdz.2023.0274

东华大学学报(自然科学版)

东华大学

东华大学学报(自然科学版)

CSTPCD北大核心

影响因子：0.308

ISSN：1671-0444

年,卷(期)：2024.50(3)

参考文献量21