摘要
聚酰胺纤维呈半晶结构,在由纤维到纱线和纱线到织物的加工过程中,分子结构很不稳定。通过研究干热、汽蒸、热水三种不同预定形方式对活性染料染超细锦纶6染色性能的影响,并用差示扫描量热仪和X射线衍射仪对织物结构进行表征,结果表明,热水定形织物的得色量较干热和汽蒸定形织物大,在130℃下定形45 min时,得色量比未定形织物增加一倍;其晶体结构中γ晶型大量转化为α晶型,结晶焓变由原来的63.73 J/g增加到88.22 J/g。此外,热水定形温度会显著影响织物染色的均匀性。
The polyamide fiber has semicrystalline structures and is very unstable when be woven into yarns and fabrics. The effect of various presetting （ including dry heat, steam and hot water setting） on dyeing properties of fine-denier polyamide 6 fibers with reactive dyes is investigated, and the fabric structures are characterized by DSC and XRD. It is found that the color yield of the hot water-setting samples is significantly higher than that of heat and steam settings, and is doubled than unsetting fabric when presetted at 130 ℃ for 45 min, and its crystal form has been transformed from ,f-phase into a-phase greatly, with the crystallization enthalpy increase from 63.73 J/g to 88.22 J/g. What＇s more, the temperature of hot water-setting has a great effect on the uniformity of dyeing.
出处
《印染》
北大核心
2012年第21期9-12,共4页
China Dyeing and Finishing
关键词
热定形
活性染料
染色性能
聚酰胺纤维
heat setting
reactive dye
dyeing property
polyamide fiber
