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.