阳离子染料（cationic dyes）是纺织染料的一种，又称碱性染料和盐基染料。溶于水中呈阳离子状态，阳离子染料可溶于水，在水溶液中电离，生成带正电荷的有色离子的染料。染料的阳离子能与织物中第三单体的酸性基团结合而使纤维染色，是腈纶纤维染色的专用染料，具有强度高、色光鲜艳、耐光牢度好等优点。
结果表明：阳离子染料可染涤纶纤维可以进行变色染色。
The results show that the cationic dyeable polyester fibers can be dyed to change color.
腈纶纤维可采用阳离子染料、分散染料及分散型阳离子染料染色。
The acrylic fibers can be dyed by cationic dyes, disperse dyes and dispersive cationic dyes.
根据不同的工艺和添加剂，可采用分散染料、酸性染料、阳离子染料染色。
Three methods of disperse dyeing, acid dyeing or cationic dyeing were provided to apply according to various process technologies and additions.
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