| 芳香共聚酰胺在浓硫酸中的稳定性 |
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| 引用本文： | 迟克栋,潘智存,刘德山,周其庠. 芳香共聚酰胺在浓硫酸中的稳定性[J]. 清华大学学报(自然科学版), 1995, 0(3) |
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| 作者姓名： | 迟克栋 潘智存 刘德山 周其庠 |
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| 作者单位： | 清华大学化学工程系 |
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| 摘 要： | 用４，４＇－二氨基二苯醚作为第三单体与对苯二甲酰氯、对苯二胺共缩聚得到共聚酰胺，并对它在浓硫酸中的稳定性进行了研究。研究了降解动力学，得到了共聚酰胺在不同温度、第三单体不同含量、不同序列结构以及硫酸不同浓度下的降解规律。结果表明，降解过程共聚物的对数比浓粘度的倒数与降解时间成线性关系，在较低温度、较低第三单体含量、分子含有较长ＰＰＴＡ链段以及硫酸浓度接近１００％时，共聚酰胺在浓硫酸中的稳定性最好。
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| 关 键 词： | 4，4＇－二氨基二苯醚；芳香共聚酰胺；浓硫酸；降解 |
Stability of aromatic copolyamides in concentrated sulphuric acid |
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| Chi Kedong, Pan Zhicun, Liu Deshan,Zhou Qixiang. Stability of aromatic copolyamides in concentrated sulphuric acid[J]. Journal of Tsinghua University(Science and Technology), 1995, 0(3) |
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| Authors: | Chi Kedong Pan Zhicun Liu Deshan Zhou Qixiang |
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| Abstract: | In this paper, the stability of copolyamides prepared from p-phenylenediamine,terephthaloyl dichloride and 4, 4'-diaminodiphenylether in sulphuric acid was studied. Theresults indicate that there is the linear relationship between reciprocal of inherent viscosity ofcopolyamides and the degradation time in concentrated sulphuric acid; lower temperature,lower content of 4, 4'-diaminodiphenylether, longer sequence length of PPTA segment and100% consistency of sulphuric acid are favorable for the stability of copolyamides insulphuric acid. |
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| Keywords: | diaminodiphenylether aromatic copolyamide sulphuric acid degradation |
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