1. Fluorine-based waterproofing agents and fluorine-free waterproofing agents
The fluoride contained in the carbon eight and carbon six fabric waterproofing agents currently used on the market is difficult to degrade. Finding alternatives to fluorine-based fabric waterproofing agents has become a research hotspot in recent years. There are currently two types of alternative products: one is non-PFOS perfluorooctyl fluorocarbon, which uses carbon six or carbon four waterproofing agents to replace carbon eight waterproofing agents; the other is completely fluorine-free fabric waterproofing agents. Currently, Common types of fluorine-free waterproofing agents on the market include acrylic, modified acrylic, polyurethane and silicone.
Compared with fluorine-based fabric waterproofing agents, fluorine-free waterproofing agents are not easy to deposit in the body, are easily degraded, are harmless to the human body, and are safer and more environmentally friendly products. This article will take Suzhou Leman Polymer Co., Ltd.’s fluorine-free product series – durable fluorine-free waterproofing agent WSA-03 as an example to introduce the characteristics, application and process formula suggestions of fluorine-free waterproofing agents for silicone fabrics.
2. Characteristics of silicone fluorine-free waterproofing agent
The fluorine-free waterproofing agent for silicone fabrics has the characteristics of low surface tension. The silicone groups in its chemical structure are arranged in a special “umbrella-shaped” structure on the surface of the finished fabric, forming a continuous alkyl layer, making the fabric obtain Water-repellent hydrocarbon surface. Another feature of this type of fluorine-free waterproofing agent is that the friction factor is small. Therefore, the fabrics processed and finished with the silicone fabric fluorine-free waterproofing agent are smoother, softer, waterproof and breathable, and can be used for fabrics with strict hand feeling requirements. Water repellent finish. Take the practical performance of durable fluorine-free waterproofing agent WSA-03 as an example. This fluorine-free waterproofing agent for silicone fabrics has excellent water-repellent and washing resistance, and the finished fabric feels soft and has good water drop bounce. It is suitable for The waterproof processing of cotton fabrics and spandex fabrics is particularly outstanding. In addition, after the durable fluorine-free waterproofing agent WSA-03 is used in conjunction with the FX-03 cross-linking agent, the finished fabrics, especially pure cotton fabrics, have a better hand feel and better hand scratches than similar products.
1) Water-repellent finishing of cotton and its blended fabrics adopts a soaking and padding treatment method with a pH value of 4-6
Polyester-cotton blend: 40g/L~80g/L (170℃×2min)
2) Water-repellent finishing of polyester and nylon fabrics adopts a soaking and rolling treatment method with a pH value of 4-6
Polyester fabric: 30g/L~70g/L (170℃×1min)
Nylon fabric: 40g/L~80g/L (170℃×1min)
Suzhou Leman Polymer Co., Ltd. focuses on the R&D and production of textile functional finishing agents. It has a senior R&D team and rich application experience. It can customize personalized functional finishing solutions according to fabric characteristics and development needs.
Post time: Dec-08-2023