Preparation method of high-permeability paste for polyester-cotton blended fabric

Abstract

The invention discloses a high-permeability paste for polyester-cotton blended fabric. The high-permeability paste comprises the following raw materials in parts by weight: 35-45 parts of attapulgite,100 parts of water, 10-15 parts of chitosan, 3-8 parts of sodium bicarbonate, 1-2 parts of modified nano silicon dioxide, 2-5 parts of octadecylamine polyoxyethylene ether and 5-12 parts of aluminumchloride. The attapulgite, the chitosan, the modified nano silicon dioxide and aluminum oxide react together under an alkaline condition to obtain the dyeing paste with a good permeation effect. According to the paste, conventional nano silicon dioxide is replaced with the nano silicon dioxide with double bonds and epoxy groups grafted on the surface, so that the dyeing permeability of the polyester fabric can be remarkably improved, the hand feeling can be smoother, the washing color fastness is high, and decolorization is not liable to occur. In order to reduce the color difference of polyester fibers and cotton fibers in the dyeing process, the octadecylamine polyoxyethylene ether with a color separation effect is further added, the effect is remarkable, and the dyeing effect without color difference can be basically achieved.

Description

technical field [0001] The invention relates to the technical field of printing and dyeing, in particular to a method for preparing a high-permeability paste for polyester-cotton blended fabrics. Background technique [0002] In reactive dye printing, pastes are generally used as thickeners to adjust the rheological properties of colorants. Guar gum has always been the first choice for reactive dye printing pastes because of its advantages of not reacting with reactive dyes, high color yield, complete color spectrum, easy to wash off from fabrics, and soft fabrics. But it is more expensive, and the printing cost is relatively high, so it has become a top priority to find a low-cost paste that can print fine patterns. [0003] At present, there are two commonly used methods to increase the permeability of polyester printing. One is to use penetrants to improve the permeability of polyester fabrics. The function of penetrants is to reduce the surface tension of fibers. Howev...

AI Technical Summary

Problems solved by technology

But it is expensive, and the printing cost is relatively high, so it has become a top priority to find a low-cost paste that can print fine patterns

[0003] At present, there are two commonly used methods to increase the permeability of polyester printing. One is to use penetrants to improve the permeability of polyester fabrics. The function of penetrants is to reduce the surface tension of fibers. However, it also promotes the diffusion of the printing paste along the horizontal direction of the polyester fabric, causing the printing paste to bleed and the outline of the pattern is not clear; another method is to increase its penetration by increasing the hydrophilicity of the polyester fabric Common methods to increase the hydrophilicity of polyester fabrics include polyester surface graft modification, hydrophilic coating finishing and alkali weight reduction treatment

[0004] The additives currently on the market to increase the permeability of polyester printing all have problems such as poor washability and poor hand feeling. After blending polyester fiber and cotton fiber, due to the large difference in dyeing difficulty between the two, in order to reduce color difference, it is necessary to develop A kind of preparation method of polyester-cotton blended fabric high permeability paste

Images