Improved processability ofPA66-polyimidecopolymers with different polyimide contents

Qu Chunyan; Tang Yao; Wang Dezhi; Fan XuPeng; Li Hongfeng; Liu Changwei; Su Kai; Zhao Daoxiang; Jing Jiaqi; Zhang Xiao

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Improved processability ofPA66-polyimidecopolymers with different polyimide contents

机译：改进了具有不同聚酰亚胺含量的Pa66-聚酰亚胺聚合物的加工性

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Limitations in the properties of polyamide PA66, such as low glass transition temperature and high water absorptivity, limit its applications. Introduction of amorphous polyimide segments into the PA66 main chain lowers the glass transition temperature and melting temperature and also improves its processability. PA66-polyimide (PA-PI) copolymers with different weight ratios of PI are prepared by high temperature and high-pressure solution polymerization. The degree of crystallization of PA-PI copolymers decreases with increasing PI content. The melting point decreases from 261 degrees C for PA66 to 223 degrees C for PA-PI-4. Dynamic mechanical analysis shows that theT(g)increases from 70 to 90 degrees C, and the storage modulus can be well maintained. Rheological studies show that the temperature for processing can reach 70 degrees C. Copolymers with different PI contents show different processing viscosities. In addition, water absorptivity (about 1.8%) and dielectric constant values of PA-PI and PA6/6T are similar.

机译：聚酰胺PA66的玻璃化转变温度低、吸水率高等性能限制了其应用。在PA66主链中引入非晶态聚酰亚胺段可降低玻璃化转变温度和熔融温度，并改善其加工性能。采用高温高压溶液聚合法制备了不同PI重量比的PA66聚酰亚胺（PA-PI）共聚物。PA-PI共聚物的结晶度随着PI含量的增加而降低。PA66的熔点从261摄氏度降至PA-PI-4的223摄氏度。动态力学分析表明，t（g）从70℃增加到90℃，储能模量可以很好地保持。流变学研究表明，加工温度可达70℃。不同PI含量的共聚物显示出不同的加工粘度。此外，PA-PI和PA6/6T的吸水率（约1.8%）和介电常数值相似。

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来源
《Journal of Applied Polymer Science》 |2021年第2期|共9页
作者
Qu Chunyan; Tang Yao; Wang Dezhi; Fan XuPeng; Li Hongfeng; Liu Changwei; Su Kai; Zhao Daoxiang; Jing Jiaqi; Zhang Xiao;
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作者单位

Heilongjiang Acad Sci Inst Petrochem 164 Zhongshan Rd Harbin 150040 Peoples R China;

Heilongjiang Acad Sci Inst Petrochem 164 Zhongshan Rd Harbin 150040 Peoples R China;

Heilongjiang Acad Sci Inst Petrochem 164 Zhongshan Rd Harbin 150040 Peoples R China;

Harbin Univ Sci &

Technol Sch Mat Sci &

Engn Harbin Peoples R China;

Heilongjiang Acad Sci Inst Petrochem 164 Zhongshan Rd Harbin 150040 Peoples R China;

Heilongjiang Acad Sci Inst Petrochem 164 Zhongshan Rd Harbin 150040 Peoples R China;

Heilongjiang Acad Sci Inst Petrochem 164 Zhongshan Rd Harbin 150040 Peoples R China;

Heilongjiang Acad Sci Inst Petrochem 164 Zhongshan Rd Harbin 150040 Peoples R China;

Harbin Univ Sci &

Technol Sch Mat Sci &

Engn Harbin Peoples R China;

Heilongjiang Acad Sci Inst Petrochem 164 Zhongshan Rd Harbin 150040 Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类高分子化合物工业（高聚物工业）;
关键词
copolymers; polyamides; polyimides; rheology; thermal properties;

机译：共聚物;聚酰胺;聚酰亚胺;流变学;热性质;

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Improved processability ofPA66-polyimidecopolymers with different polyimide contents

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