Preparation of polypropylene fiber fabric, and liquid all-in-one printing and dyeing pretreatment technology

Abstract

The invention discloses preparation of polypropylene fiber fabric, and a liquid all-in-one printing and dyeing pretreatment technology. The polypropylene fiber fabric is prepared from the following warp and weft materials in parts by weight: 40-90 parts of polypropylene fiber, 20-40 parts of combed cotton and 8-18 parts of superfine denier polyester; in the slashing working procedure, a liquid all-in-one auxiliary agent is fed into slurry, and the pH value of the liquid all-in-one auxiliary agent for dyeing is 2g / L: 8.5+ / -1; the auxiliary agent comprises the following components in parts by weight: 0.5-1.5 parts of sodium hydroxide, 0.2-0.5 part of a chelating agent and 0.2-1 part of sodium hexametaphosphate, wherein the ratio of the total mass of the sodium hydroxide, the chelating agent and the sodium hexametaphosphate to the mass of water is equal to 2:50; after the slashing technology is finished, heat preservation is carried out for 50-80 minutes according to the concentration of the material to be dyed of the fabric. After the preparation of the polypropylene fiber fabric is adopted, the fabric has the advantages of high elasticity, high strength, heat insulation, heat resistance and light resistance; furthermore, the dye liquor can rapidly permeate and diffuse into the fiber of the fabric in the subsequent dye liquor, so that the phenomena such as dye lot chromatism, dyeing defect, chromatic aberration and solid color spots can be effectively prevented in the printing and dyeing process.

Description

technical field [0001] The invention belongs to the technical field of textiles, in particular to a preparation of polypropylene fiber fabric and a pretreatment process of liquid multi-combination printing and dyeing. Background technique [0002] Polypropylene fiber is also called polypropylene fiber. The source of raw materials is abundant, the production process is simple, and the product price is relatively lower than other synthetic fibers; the physical and mechanical properties of the fiber are characterized by: high strength (4-6 grams / denier for short fibers, 5-8 grams / denier for filaments), wet The strength and dry strength are basically the same, the specific gravity is small (0.91), wear resistance and corrosion resistance, etc.; due to the advantages of simple production process, low price, high strength and light relative density, polypropylene has developed rapidly. At present, polypropylene fiber is the fourth largest variety of synthetic fibers and the light...

AI Technical Summary

Problems solved by technology

[0004] Polypropylene fiber is light and warm, and has almost no moisture absorption, but it has strong wicking ability and obvious moisture absorption and perspiration effect; polypropylene fiber has little hygroscopicity and almost no moisture absorption, and its moisture regain is close to zero under general atmospheric conditions; but it has The wicking effect can transmit water vapor through the capillary in the fabric, but it does not have any absorption effect. The dyeability of polypropylene fiber is poor and the color spectrum is incomplete; High cost, inconvenient to use, and a new product developed, with calcium hydroxide as ingredients, while effectively reducing the cost of alkali agents for dyeing, it can also improve the first-time success rate of dyeing and significantly reduce the overall cost of dyeing

[0005] However, although the substitute alkalis on the market have the above-mentioned advantages, there are still some problems in the process of use. The substitute alkalis have obvious selectivity to the color-fixing effect of the polypropylene fiber structure reactive dyes; The highest color fixation rate of dyes is 5%-10% lower than that of anhydrous sodium carbonate as alkali agent. The dye uptake rate of some dyes is not stable, the dyeing shade deviates from soda ash dyeing, and contains a large amount of color difference, etc., which still exist as substitute alkalis. The most important problem is the deviation between the fixation rate and the hue of soda ash, especially the red coffee and purple, which are not as deep as soda ash. The difference between the hue and soda ash is too large, and the effect is not ideal; Calcium precipitates are easy to form in the dyeing vat during use, which is difficult to remove, which greatly affects the quality of subsequent printing and dyeing