The p-aramid fiber is mostly used in high tech applications such as protective clothing, cut resistant gloves, heat resistant suits, etc. due to its extraordinary mechanical and thermal properties. On the other hand, it loses its strength upon exposure to UV (ultraviolet) light. The main purpose of this work is to optimize p-aramid fabrics dyeing with disperse dyes and study the impact of dye on its properties such as shade depth (K/S), fastness, and UV degradation. The batch process is used to dye the fabric with disperse dyes that give high K/S value. The ANOVA (analysis of variance) is performed for the result investigation, depicting the input and output variables relation. The mechanical loss of p-aramid on exposure to UV was confirmed by bursting strength showing 28% strength loss in comparison to the dyed p-aramid fabric having 15% loss in strength. This was further endorsed by scanning electron microscope and X-ray diffraction by investigating the changes in surface morphology and crystallinity on exposure to UV simultaneously to confirm the hypothesis that dyeing reduces the degradation upon exposure to UV light.

中文翻译：

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分散染料染色对芳纶织物的牢度和力学性能研究

对位芳纶纤维主要用于高科技应用，例如防护服、防割手套、耐热套装等，因为它具有非凡的机械和热性能。另一方面，它在暴露于紫外线（紫外线）时会失去强度。这项工作的主要目的是优化分散染料对芳纶织物的染色，并研究染料对其色深（K/S）、牢度和紫外线降解等性能的影响。分批工艺用于使用具有高 K/S 值的分散染料对织物进行染色。ANOVA（方差分析）用于结果调查，描述输入和输出变量的关系。与具有 15% 强度损失的染色对位芳纶织物相比，显示强度损失 28% 的破裂强度证实了暴露于紫外线时对位芳纶的机械损失。扫描电子显微镜和 X 射线衍射通过同时研究暴露于紫外线时表面形态和结晶度的变化进一步证实了这一点，以证实染色减少暴露于紫外线时降解的假设。