预处理对微胶囊改性聚酯织物舒适凉爽性的影响

由于聚酯纤维的化学性质稳定、纤维表面光滑，不易与后整理剂相结合，因此利用薄荷油微胶囊后整理对聚酯织物进行舒适凉爽改性时，存在附着量少、改性效果差的缺点。为解决这一问题，本文在后整理前增加了碱预处理和等离子体预处理。通过对聚酯织物原样、无预处理后整织物、碱预处理后整织物和等离子体预处理后整织物进行舒适凉爽性能测试，深入分析两种预处理方法对聚酯织物改性效果的影响。结果表明：等离子体预处理在织物透湿、导水、润湿、速干和凉爽性改性方面促进作用更明显，相比无预处理后整织物，等离子体后整织物的透湿率、经向和纬向芯吸高度、滴水扩散时间、蒸发速率及接触凉感系数分别提高了3.32%、40.24%、27.25%、80.39%、21.21%和5.59%；碱预处理则在织物透气性和吸水性改善方面的效果更佳，相比无预处理的后整织物，可将织物的透气率和吸水率分别提高43.43%和13.03%。因此，两种预处理方法对聚酯织物舒适凉爽性的改性效果有显著促进作用。

Effect of pretreatment on comfortability and coolness modification of PET fabric by microcapsule finishing

Peppermint oil microcapsules finishing on PET (polyester) fabric would improve its comfortability and coolness, while the stable chemical properties and smooth surface of PET fibers make the fabric difficult to combine with the finishing agent. In order to improve the modification effect, alkali and plasma pretreatments were used and their effects on modification were studied by testing the comfort and cool properties of the following PET fabrics: without any treatments, microcapsule finishing without pretreatments, microcapsule finishing with alkali pretreatment and with plasma pretreatment in this paper. The results showed that plasma pretreatment was more effective on the moisture permeability, water transmission, wettability, quick-drying and contact cool feeling while alkali pretreatment was more effective on the air permeability and water absorption of PET fabrics. Compared with the microcapsules finishing PET fabric without pretreatments, the water-vapor transmission rate, warp and weft wicking height, drip diffusion time, evaporation rate and contact cool feeling coefficient of the finishing fabric with plasma treatment were improved by 3.32%, 40.24%, 27.25%, 80.39%, 21.21% and 5.59%: Respectively, and the air permeability and water absorption rate of the fabric with alkali pretreatment were improved by 43.43% and 13.03%. Therefore, plasma and alkali pretreatments before the microcapsule finishing on PET fabric could significantly improve its modification effect on comfortability and coolness.