Nano-microfiber production method

Abstract

The invention discloses a nano-micro fiber making method. The method comprises the following steps: uniformly mixing 80-100 parts of a high-hydrolysis-resistance polyurethane resin with 150-280 parts of dimethyl formamide, allowing the obtained mixture to stand, uniformly mixing with a slurry formed by 5-10 parts of dimethyl formamide, 2-10 parts of a hydrolysis resistant color paste and 1-3 parts of a surfactant at 20-40DEG C, and carrying out deaeration filtering defoaming; ironing a fleece, immersing in the slurry, solidifying with an aqueous solution of dimethyl formamide, washing with water, extruding, and drying to obtain a wet base; and carrying out surface polishing of the wet base, and carrying out textured surface treatment to obtain nano-micro fibers. The method adopts the high-hydrolysis-resistance polyurethane resin to prepare the wet base and allows the surface of the wet base to undergo post-treatment buffing, and the produced nano-micro fibers have the advantages of fine surface, uniform wool feeling, certain acerbity hand feeling, ventilation, softness, full hand feeling, good elasticity and the like.

Description

Technical field [0001] The invention relates to a method for manufacturing artificial leather, in particular to a method for manufacturing nano super fiber. Background technique [0002] In recent years, due to the promulgation of many environmental protection laws and regulations, as well as the high price of leather and limited sources, people are looking for alternatives to leather. Synthetic leather made of microfibers is becoming more and more popular in the market. The non-woven fabric for super-fiber synthetic leather is the basic material for making super-fiber synthetic leather base fabric. It uses polyamide and polyethylene as the main raw materials to produce sea-island staple fiber through processes such as melt spinning, drawing, drawing, crimping, and cutting. It is made by carding and needle punching processes. This production method is complicated and cumbersome and difficult to process, and the nano microfibers obtained by this method have a harder hand, which is...

AI Technical Summary

Problems solved by technology

[0002] In recent years, due to the promulgation of many laws and regulations on environmental protection, as well as the high price and limited sources of genuine leather, people are looking for substitutes for genuine leather, and synthetic leather made of microfibers is becoming more and more popular in the market. The non-woven fabric for microfiber synthetic leather is the basic material for making superfiber synthetic leather base cloth. It uses polyamide and polyethylene as the main raw materials, and is made into sea-island staple fibers through processes such as melt spinning, traction stretching, crimping, and cutting. , and then made through carding and acupuncture process, this production method is complex and cumbersome, not easy to process, and the nano-ultrafiber obtained by this method feels hard, which is quite different from human skin