低温染色助剂CWL对涤纶纤维增塑的作用

为降低涤纶纤维的染色温度,利用复配增效技术研制了低温染色助剂CWL。将助剂用于涤纶织物分散染料低温热溶染色,比较经预增塑染色工艺和同浴染色工艺所得试样的染色深度,并对经助剂CWL处理的涤纶纤维进行差热扫描量热法(DSC)测试。结果表明:助剂CWL处理后涤纶纤维的玻璃化温度明显降低,说明助剂CWL对涤纶纤维起到了增塑作用;染浴中加入适量助剂CWL后,分散染料在焙烘温度180℃时能够达到传统热溶染色工艺210℃时的染色深度;同浴染色工艺的染色深度明显高于预增塑染色。

Plasticization of low-temperature dyeing auxiliary CWL on polyester fiber

Low-temperature dyeing auxiliary CWL was developed in terms of compounding and synergistic technique in order to decrease the thermosol dyeing temperature of polyester fiber.The application experiments of CWL in thermosol dyeing were discribed.The colour depth of the dyed fabrics was compared between the pre-plasticizing dyeing process and one bath dyeing process with auxiliary CWL.DSC analysis was used to test the glass temperature of polyester fiber.The results show that the glass temperature of polyester fiber treated with CWL has obviously dropped,therefore the plasticization effect is confirmed.And the colour depth of the fabric dyed by one bath process with CWL at(180 ℃) is the same as that dyed by normal thermosol dyeing at(210 ℃).Moreover,the K/S value of one bath dyeing process is much higher than that of the pre-plasticization dyeing process.