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首页> 外文期刊>The Journal of the Textile Institute >Thermal stability and yellowing of polyamide finished with a compound anti-thermal-yellowing agent
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Thermal stability and yellowing of polyamide finished with a compound anti-thermal-yellowing agent

机译：复合抗热变黄剂对聚酰胺的热稳定性和泛黄性

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摘要

In order to enhance the thermal stability and reduce the thermal yellowing ofpolyamide fabrics, a kind of compound anti-thermal-yellowing agentmade up byurea, sodium hypophosphite, and adipic dihydrazide was finished to polyamide in this study. The structure change and the thermal stability of the polyamidewere investigated bythe analysis of TG-DSC, TG-FTIR curves, viscosity-average molecular weight,and end carboxylgroupcontent of polyamide fibers. The anti-yellowing effect was evaluated by whiteness and yellowing index values. The results showed that the compound anti-thermal-yellowing agent could enhance the decomposition temperature and hinder thethermal-oxidative degradationof polyamide. Besides, the whiteness values of the fabrics treated by the anti-thermal-yellowing agent were distinctly higher than that of untreated fabrics and fabrics treated by Umidol UWP but the yellowing index values were lower, which supported that the thermal stability of the polyamide treated by the anti-thermal-yellowing agent became better.
机译：为了提高聚酰胺织物的热稳定性，减少聚酰胺纤维的热黄变，本研究将一种由脲，次磷酸钠和己二酸二酰肼组成的复合抗热黄变剂整理成聚酰胺。通过对TG-DSC，TG-FTIR曲线，粘均分子量和聚酰胺末端羧基含量的分析，研究了聚酰胺的结构变化和热稳定性。通过白度和黄变指数值评价抗黄变效果。结果表明，该复合抗热黄变剂可以提高聚酰胺的分解温度，并阻碍聚酰胺的热氧化降解。此外，经抗热黄变剂处理的织物的白度值明显高于未处理的织物和经Umidol UWP处理的织物，但泛黄指数值较低，这表明经抗黄变剂处理的织物的白度值较低，这表明经抗黄变剂处理的织物的白度值较低。抗黄变剂变得更好。

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