Waterborne polyurethane coating agent containing superfine down feather fiber-nano silver microsphere

Abstract

The invention discloses a waterborne polyurethane coating agent containing superfine down feather fiber-nano silver microspheres. According to the waterborne polyurethane coating agent, down feather fiber is processed into glutaraldehyde grafted superfine fiber with good surface activity and thermal stability, nano silver is cured and deposited on the surface of the glutaraldehyde grafted superfine fiber, and the composite fiber microspheres are prepared by carrying the nano silver on the superfine down feather fiber as a carrier, so that the defect that nano silver has low probability of dispersion in a polyurethane emulsion is effectively avoided, the adhesion solidness firmness of the nano silver is improved, the air and moisture permeability of a polyurethane coated layer can be improved as the superfine down feather is good in permeability, a fabric treated by the waterborne polyurethane coating agent disclosed by the invention has a long-lasting antibacterial effect and is good in wearing experience, and the economic values of the fabric are greatly increased.

Description

technical field [0001] The invention relates to the technical field of textile coating finishing agents, in particular to a water-based polyurethane coating agent containing ultrafine down fiber-nanometer silver microspheres. Background technique [0002] Textile coating finishing agent, referred to as coating agent, is a polymer compound film coated on the surface of the fabric to improve the style, feel and appearance of the fabric, etc., which greatly increases the added value of the textile. Water-based polyurethane coating agent is an important class of environmentally friendly coating agent, which has the advantages of excellent elasticity, soft hand feeling, wear resistance and solvent resistance, etc., but its moisture permeability is poor, which seriously affects the wearing experience of fabrics, and the production cost is high. With the improvement of market demand, it is particularly important to study waterproof and breathable environmentally friendly polyuretha...

AI Technical Summary

Problems solved by technology

Water-based polyurethane coating agent is an important class of environmentally friendly coating agent, which has the advantages of excellent elasticity, soft hand feeling, wear resistance and solvent resistance, etc., but its moisture permeability is poor, which seriously affects the wearing experience of fabrics, and the production cost is high. With the improvement of market demand, it is particularly important to study waterproof and breathable environmentally friendly polyurethane fabric coating agents

"Preparation and Application of Silk Fibroin / Polyurethane Waterproof and Moisture-permeable Coating Agent" uses silk fibroin to modify polyurethane, which effectively improves the moisture permeability of the coating agent. However, the hydrophobicity of silk fibroin is poor. As the mass fraction of centrin increases, the water resistance of the coating film will deteriorate, and the production cost of silk fibroin is high, which is not conducive to large-scale production

[0003] my country is a big down producing country, and its annual output is far ahead of other countries. Down is a natural protein material with a multi-group amino acid peptide chain structure. The crude protein content accounts for more than 80% of the entire down. Its structure is fluffy and soft, and it has excellent warmth retention. , with good hygroscopicity and biocompatibility, however, the research and utilization of its resource utilization is still at the level of rough processing of raw materials, except for a small amount of thermal filling materials used in clothing and bedding, and some used in sports Supplies, handicrafts and reinforcement materials for composite materials are mostly treated as waste, causing a lot of waste of resources