关键词: 染色, 超高分子量聚乙烯织物, 高疏水性染料, 威廉姆森醚化反应, 溶解度参数

Abstract:

Conventional dyes are difficult to add color to ultra-high molecular weight poly-ethylene (UHMWPE) fibers. To address this problem, 1-hydroxy-4-p-toluylaminoanthraquinone and halogenated hydrocarbons were selected as raw materials, and three high hydrophobicity purple dyes, i.e. 1-p-toluylamino-4-anthraquinone hexyl ether, 1-p-toluylamino-4-anthraquinone decyl ether and 1-p-toluylamino-4-anthraquinone tetradecyl ether were prepared through Williamson etherification reaction. The target product was characterized and analyzed by infrared spectroscopy, proton nuclear magnetic resonance spectroscopy and Chem3D Ultra 8.0 software. The UHMWPE fabric was dyed through a high-temperature and high-pressure dyeing process, and the dyeing properties were discussed. The results show that with the increase of alkyl substituents, the hydrophobicity of modified dyes gradually increases, and the affinity with UHMWPE fabric is significantly enhanced. When the substituent carbon number is 14, the affinity between the dye and the fiber becomes 11.18 kJ/mol, and the rubbing color fastness and soaping color fastness reach grade 4-5.

Key words: dyeing, ultra-high molecular weight polyethylene fabric, highly hydrophobic dyes, Williamson etherification reaction, solubility parameter