Dye black at room temperature

Room temperature black dyeing is a fabric dyeing process carried out at a relatively low temperature (usually close to room temperature, generally around 20℃ - 30℃). The following is an introduction to its principles, characteristics, applications, etc.:

principle

Normal temperature black dyeing usually uses special dyes and auxiliaries. These dyes have the characteristics of chemical reaction or physical adsorption with fabric fibers at room temperature. For example, some active dye molecules contain active groups that can react with hydroxyl groups on cellulose fibers. Under normal temperature and appropriate pH conditions, dye molecules and fiber molecules are combined through covalent bonds, thus dyeing the fabric black.

Features

Energy saving: Compared with traditional high-temperature dyeing, room-temperature black dyeing does not require heating the dye solution to a high temperature (such as 90°C - 130°C), which greatly reduces energy consumption and carbon emissions, and meets the requirements of environmental protection and energy saving.

Protect fabrics: Lower dyeing temperatures can reduce damage to fabric fibers, especially for some fibers that are easily deformed, brittle or faded at high temperatures, such as silk and wool among natural fibers, and some special varieties of chemical fibers. Dyeing black at room temperature can better maintain the feel, gloss and physical properties of the fabric.

Uniform color: During the black dyeing process at room temperature, the adsorption and diffusion of the dye on the fabric is relatively uniform, which can obtain a black effect with uniform color and high brightness. In addition, the dyeing has good reproducibility, that is, the dyeing effect is relatively consistent each time, which is conducive to large-scale production and quality control.

Simple process: no complicated high-temperature equipment and strict temperature control devices are required, which simplifies the dyeing process, reduces the cost and operation difficulty of production equipment, and improves production efficiency.