Two-component one-bath stripping agent and stripping method thereof

Abstract

The invention discloses a two-component one-bath stripping agent and a stripping method thereof. The stripping agent comprises a component A and a component B; the component A comprises 5-20% of an activator, 20-50% of a metal hydroxide and the balance water in percentages by weight; and the component B of the stripping agent is solid powder. The stripping method comprises the following steps: (1)rinsing the fabric in a mixed solution containing an alkaline agent and a surfactant at the temperature of 40-90 DEG C for 5-20 min; and (2) uniformly mixing and stirring the component A and the component B of the stripping agent, taking out the fabric, pouring the fabric into the mixed solution, performing stripping at the temperature of 70-100 DEG C for 5-30 min, washing with water after the stripping is finished, and drying. The stripping agent is stable in component performance and safe to store; when the two components are mixed, extremely strong reducing substances are generated and areprepared immediately when needed, so that high efficiency and convenience are achieved; less stripping agent is used, and the stripping time is short; and the stripping rate of various fabrics can bevery high, and the damage to the fabrics is small.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing and finishing, and in particular relates to a two-component one-bath stripping agent and a stripping method thereof. Background technique [0002] A large number of discarded textiles every year in the world, such as old clothes and discarded leftovers from textile and garment factories, cannot be effectively utilized. The recycling of textiles can not only reduce the pollution of the textile industry to the environment, but also form a virtuous circle of reuse and alleviate the shortage of raw materials. Recycling requires stripping the fabric dye first. Generally, chemical or physical methods are used to destroy the chromophoric group of the dye on the fabric or to separate the dye from the fabric so as to achieve the purpose of decolorization. Conventional stripping methods for textiles mainly include sodium hypochlorite method, sodium bicarbonate caustic soda method, hydrogen peroxide...

AI Technical Summary

Problems solved by technology

Among them, the sodium hypochlorite method is prone to produce chlorine gas; the nature of sodium hypochlorite is very unstable, it is easy to decompose under hot and humid conditions, it is easy to agglomerate after being damp, and it can spontaneously ignite when it is serious, and the management is cumbersome, and the decomposition rate is difficult to control. Uneven peeling, low effective utilization rate; hydrogen peroxide is extremely unstable, easy to cause decomposition when exposed to heat, strong light, impurities, impact, heavy metals, etc., and the peeling effect is not obvious; carving white powder has a pungent odor, released when damp Hydrogen sulfide is released. Although the peeling effect is better, it will release formaldehyde when used, which will affect human health.

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