水解活性染料在羊毛织物上的应用

Application of hydrolyzed reactive dyes on wool dyeing

活性染料在染色过程中会有部分染料因水解而造成浪费,降低染料利用率,而留在染液中的染料也会增加染色废水的处理难度。为了提高水解活性染料的利用率,采用水解活性染料对羊毛进行染色,分析水解活性染料对羊毛染色的可行性。结果表明:水解活性染料在酸性条件下可以上染羊毛,具有较好的上染百分率和染色深度;染色后织物的耐皂洗色牢度和耐摩擦色牢度与酸性染料染色羊毛织物的色牢度相当;水解活性染料可以与酸性染料进行拼色,减少酸性染料的用量,提升染色深度;对水解活性染料染液循环染色,可以减低染色废水的色度,降低染色废水的处理难度。

Reactive dyes can be wasted because some dyes would be hydrolyzed in the dyeing process,which reduces the utilization rate of reactive dyes.And dyes in the solutions can increase the difficulty of the treatment of dyeing wastewater.To improve the utilization rate of reactive dyes,hydrolyzed reactive dyes were adopted to dye wool and the feasibility of this process was analyzed.The results show that hydrolyzed reactive dyes can dye the wool in acid conditions and good dye uptake and dyeing depth can be obtained.The soaping and rubbing fastness of this process is similar to wool dyed with acid dyes.Color matching between hydrolyzed reactive dyes and acid dyes can reduce the condition of acid dyes and improve the dyeing depth.As the time of dyeing process with hydrolyzed reactive dyes increases,the absorbance of dye in solution decrease,which reduce the difficulty of the treatment of dyeing wastewater.