Preparation method of natural animal and plant based aldehyde-free color fixing agent

Abstract

The invention relates to a preparation method of a natural animal and plant based aldehyde-free color fixing agent, and belongs to the field of material preparation. According to the preparation method, the esterification product of aloe extract is used to carry out crosslinking on the surface of textile fibers to form a membrane; at the same time, the trace metal ions in aloe extract can be used as a natural mordant and can form coordinate bonds with the groups of dyes and textile fibers, thus the binding force between fibers and dyes is enhanced, the color fastness is increased; furthermore, a pig skin extract is doped, because collagen fibers in the pig skin extract are intertwined with each other to form a net-like structure, the pig skin extract has strong viscosity, and under certain conditions, the pig skin extract can adhere on the surface of textile fibers to form a net, so the dyes on fibers will not fall off easily, fading is difficult to happen, and the color fastness is increased. The prepared natural animal and plant based aldehyde-free color fixing agent has a good color fixing effect, dye is difficult to fall, fading is difficult to happen, the wet rubbing fastness can reach 2 grade or more, the dry rubbing fastness can reach 3 grade or more, and the color fixing agent does not contain any harmful component, will not damage the health of workers, and protects the environment at the same time.

Description

technical field [0001] The invention relates to a preparation method of a natural animal and plant-based composite formaldehyde-free color fixing agent, which belongs to the field of material preparation. Background technique [0002] Dye fixing agent refers to a class of compounds that can fix dyes and fibers more effectively, and it can improve and increase the fastness of dyed fabrics. At present, in the textile printing and dyeing industry, the use of dye fixing agents is becoming more and more extensive. [0003] The raw materials of existing and traditional acid color fixing agents are 4,4-dihydroxybiphenyl, formaldehyde, sulfuric acid, and acetic anhydride. The raw materials contain formaldehyde and are not environmentally friendly; some factories use phenolic and tannin acid color fixing agents , was considered to be a system that meets the requirements of environmental protection. But practice has proved that there are serious shortcomings: phenols still have envi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the existing color-fixing agent has poor color-fixing effect, causing serious dye fading and fading, affecting the quality of dyed cloth, and the color-fixing agent contains a large amount of formaldehyde, which affects the health of laborers. Problem, the present invention utilizes the esterification product of aloe vera extract to form a cross-linked film on the surface of fabric fibers, and simultaneously the extract contains a small amount of metal ions that can be used as natural mordants to form coordination bonds with groups of dyes and fabric fibers to improve The combination of fiber and dye can improve the color fastness, and then mixed with pigskin extract, the collagen fiber components in it are interwoven with each other to form a network, which has a high viscosity. Under certain conditions, it can stick to the surface of fabric fibers. Form a network, so that the dye on the fiber is not easy to fall off or change color, so as to further improve the color fastness