活性染料染棉的工艺流程
英文回答:
The process of dyeing cotton with reactive dyes involves several steps. Firstly, the cotton fabric is prepared by scouring and bleaching to remove any impurities and improve the dye absorption. This is done by treating the fabric with a mixture of chemicals and washing it thoroughly. Once the fabric is ready, it is then immersed in a dye bath containing the reactive dye.
The dye bath is prepared by dissolving the reactive dye in water along with a suitable amount of salt and alkali. The salt helps to increase the dye absorption by the fabric, while the alkali helps to create an alkaline environment that promotes the reaction between the dye and the fabric. The dye bath is heated to a specific temperature, usually around 50-60 degrees Celsius, to ensure optimal dye absorption.
Once the fabric is immersed in the dye bath, it is agitated continuously to ensure even dye
distribution. The fabric is usually left in the dye bath for a specific duration, typically around 30-60 minutes, to allow sufficient time for the dye to react with the fabric. During this time, the reactive dye forms covalent bonds with the cellulose fibers of the cotton fabric, resulting in a permanent coloration.
After the dyeing process, the fabric is rinsed thoroughly to remove any excess dye and chemicals. This is done by washing the fabric in water multiple times until the rinse water runs clear. The rinsing process helps to remove any unreacted dye molecules and ensures that the fabric is free from any residual chemicals.
Finally, the dyed fabric is dried either by air drying or using a drying machine. Once dried, the fabric is ready for further processing, such as finishing or garment production.
中文回答:
活性染料染棉的工艺流程包括以下几个步骤。首先,棉织物经过煮洗和漂白处理,以去除任何杂质并提高染料的吸收性。这是通过使用化学物质处理织物并彻底清洗来完成的。一旦织物准备好,它就会被浸泡在含有活性染料的染液中。
reactive to
染液是通过将活性染料与适量的盐和碱溶解在水中制备而成。盐有助于增加织物对染料的吸收,而碱则有助于创建碱性环境,促进染料与织物之间的反应。染液被加热到特定的温度,通常在50-60摄氏度左右,以确保最佳的染料吸收。
一旦织物浸入染液中,就会持续搅拌以确保染料均匀分布。织物通常在染液中停留一定的时间,通常约为30-60分钟,以确保染料有足够的时间与织物反应。在此期间,活性染料与棉织物的纤维形成共价键,从而实现永久着。
染过程结束后,织物会经过彻底清洗以去除任何多余的染料和化学物质。这是通过多次用水洗涤织物,直到冲洗水变清为止来完成的。冲洗过程有助于去除任何未反应的染料分子,并确保织物不含任何残留的化学物质。
最后,染的织物可以通过自然晾干或使用干燥机进行干燥。干燥后,织物可以进行进一步加工,如整理或服装生产。
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