Water-borne polyurethane coating agent containing superfine down fiber-porous polystyrene microspheres

Abstract

The invention discloses a water-borne polyurethane coating agent containing superfine down fiber-porous polystyrene microspheres. The superfine down fiber-porous polystyrene microspheres are prepared by the following steps of treating down fibers into superfine fibers with high surface activity and high thermal stability, and doping the superfine fibers in polystyrene; prepared composite porous polystyrene microspheres have good air and moisture permeability of down fibers and also have an excellent heat insulating effect; by using the composite porous polystyrene microspheres, the clammy feeling of a traditional polyurethane coating can be effectively relieved, a coating with smooth hand feeling, high luster, high permeability and warm-protection, safety and skin friendliness is obtained, and use experience of fabric is remarkably improved.

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-porous polystyrene 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 polyuret...

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