Common Finishing Process In Textile Dyeing And Finishing

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Quaternary ammonium cation and its hygroscopicity in cationic waterborne polyurethane have significant antistatic effect and have better water resistance than carboxyl polyurethane.

At the same time, the cationic polyurethane can also greatly improve the wear-resistance and permeability of the fabric.

Zhu Jianping and Zhou Xiangdong, however, have prepared durable antistatic agents by the reaction of blocked Aliphatic Waterborne Polyurethane and active hydrogen groups in cationic surfactants.

The antistatic agent has good washability and can improve dyeing fastness of dyes.

At the same time, its strong permeability and low usage, together with the inherent wear resistance of polyurethane, make this kind of antistatic agent have broad prospects for development.

It is suitable for antistatic finishing of polyester, nylon and acrylic fabrics.

Appearance style finishing.

Polyurethane finishing agent is used in suede finishing. The fabric has strong skin feel, rich handle, good toughness and ventilation.

Compared with the general fabric like linen finishing agent, the moisture heat pfer reaction type polyurethane has lower molecular weight, stronger penetrability to the fabric, and can react with the fiber and cross itself to form a membrane.

The water dispersible polyurethane prepared from natural polysaccharides can not only improve the water absorbency of finishing fabrics, but also do not cause dyestuff and discoloration. It is a kind of high-grade fabric hemming finishing agent.

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Polyurethane aromatic microcapsule overcomes the problem of formaldehyde in gelatin / Arabia gum and urea formaldehyde resin microcapsules, and overcomes the problem of taste change and discoloration of epoxy resin microcapsules.

Technology is a new technology of textile flavor finishing based on polyurethane microcapsule finishing agent.

It is said that this product is suitable for all finishing processes of textiles. Some of the major women's underwear and sportswear manufacturers in Italy have used this technology to produce products with fragrance and efficacy.

Scholars at Tianjin University of Technology in China also made use of interfacial polymerization to prepare aromatic microcapsules in water in oil system with polyurethane as wall material. The properties and influencing factors of microcapsules were discussed, and the reference process for aromatic finishing was given.

Although aromatic polyurethane microcapsules have many advantages, their retention time is relatively short.

Polyurethane coating agent.

As a new breakthrough technology in the field of fabric finishing, coating technology has broken the limitations of traditional textiles in variety, style and function.

Through coating finishing, fabrics can be given water repellent, antifouling, wind protection, warmth retention, flame retardant, shading and radiation protection. The fabric has high resilience and soft and full style, or fabric has natural leather appearance and pleasing luster.

Compared with other finishing materials, polyurethane has many advantages such as strong molecular structure, good handle, strong adhesion, high toughness, fatigue resistance, wear resistance, cold resistance and excellent environmental protection. It has achieved commercial success [35].

Finishing of functional coatings.

A new waterproof and moisture permeable garment fabric with soft handle and excellent drapability can be obtained through the polyurethane pfer coating.

At present, the waterproof and moisture permeable fabrics produced in China are mainly polyurethane coated or laminated fabrics made of polyester filament plain fabric, and have a large market in Jiangsu, Zhejiang, Fujian and Guangdong provinces.

Despite the active development in China, the PU permeable coating materials still come from the United Kingdom, the United States, Belgium, South Korea and Taiwan, China.

In addition, nanomaterials can be well dispersed in waterborne polyurethane without agglomeration, and their original properties will not be affected.

Therefore, the emergence of waterborne polyurethane greatly promotes the development of nano functional materials.

Practical application.