Hydroxy silicone oil structural characteristics
In hydroxy silicone oil, Si-O has high thermal stability; the Si-O-Si bond has a dipole induction effect on the hydrocarbon group connected to the Si atom, which can improve its stability. The structure of the silicon-oxygen chain also endows the silicone with low surface tension and weak intermolecular force, and the hydroxy silicone oil has good hydrophobicity due to its special structure. The intermolecular force of methyl is inversely proportional to the sixth power of the intermolecular distance. The larger the distance, the weaker the intermolecular force, so the molecular force of dimethylsiloxane is much weaker than that of hydrocarbons, so it The surface tension of polysiloxane is smaller than that of hydrocarbons of similar molar mass, and the low surface tension of polysiloxane makes the hydroxy silicone oil spread easily on the interface.

With the strengthening of people's awareness of environmental protection, the traditional solvent-based polyurethane gradually withdraws from the market, and is replaced by a green environmental protection material - water-based polyurethane. However, the waterborne polyurethane introduces a hydrophilic chain extender or a hydrophilic segment during the synthesis process, which leads to its poor water resistance. In order to make up for the shortage of water-based polyurethane, it is an effective solution to combine hydroxyl silicone oil with polyurethane. Hydroxy silicone oil is widely used to modify waterborne polyurethane due to its low surface energy, good hydrophobicity and good weather resistance. It is an effective way to overcome the defects of a single polymer by copolymerizing the two. Polyurethane silicone copolymer products have both The advantages of both, such as good flexibility, excellent water resistance, excellent surface enrichment ability, good biocompatibility, meet various market demands. And because of its special structural characteristics, polyurethane silicone makes this softener have some excellent characteristics that other softeners do not have. It can give the fabric a plump, elastic and dry hand while ensuring the fabric's excellent soft feel, which can meet the needs of high-end use. Occasion demand, has broad market prospects.