Silicone hydroxyl silicone oil is a polysiloxane with hydroxyl end group, oily liquid, with the characteristics of methyl silicone oil. Low viscosity hydroxy silicone oil is an excellent structural control agent in silicone rubber processing, which can replace diphenylsilicondiol, simplify the process and improve the process performance. It is also used as a waterproof, soft and anti-stick treating agent for fabric, leather and paper, widely used in coating, electronic and electrical, biological medical, food, personal care and other fields.

Structural characteristics of hydroxyl silicone oil

In hydroxyl 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 silicon oxygen chain also endows organosilicon with low surface tension and weak intermolecular force, and hydroxyl silicone oil has good hydrophobicity due to its special structure. Methyl molecular inter-atomic forces between the molecules and six inverse proportion of the distance, the distance become ambassador molecular inter-atomic forces is weakened, so the dimethyl siloxane molecules force is much weaker than hydrocarbons, so its surface tension is smaller than the similar molecular weight hydrocarbons, low surface tension of polysiloxane make hydroxyl silicone oil is easy to spread out on the interface.

With the increase of people's awareness of environmental protection, the traditional solvent polyamine vinegar gradually withdrew from the market, replaced by a green environment-friendly material -- water-based polyurethane. However, the hydrophilic chain extender or hydrophilic chain segment is introduced in the synthesis process of waterborne polyurethane, which leads to its poor water resistance. In order to make up the deficiency of waterborne polyurethane, the combination of hydroxyl silicone oil and polyurethane is an effective solution. Hydroxyl silicone oil with low surface energy, hydrophobic good, good weather resistance, etc are widely used in modification of waterborne polyurethane, by both the copolymerization modification is an effective way to overcome the single polymer defects, polyurethane silicone copolymer product has the advantages of both, for example, good flexibility, excellent water resistance, good surface enrichment ability, good biocompatibility, Meet a variety of market needs. And because of its special structural characteristics, polyurethane silicone makes this softener has some excellent characteristics that other softeners do not have. It can guarantee the good soft feel of the fabric while giving the fabric plump elastic and dry feel, which can meet the needs of high-end wearing occasions and has broad market prospects.

Used as a leather finishing agent

The film forming material in the finishing layer has a great influence on the physical properties of finished leather, especially the top finish endowing the surface of finished leather with water resistance, solvent resistance, mechanical abrasion resistance and other properties, which plays a decisive role in the appearance of leather. Due to the introduction of hydrophilic ionic groups in the molecular chain of polyurethane, the water resistance of leather coated with polyurethane is poor, which can be improved by adding hydroxyl silicone oil. Hydroxyl silicone oil is a kind of material with good hydrophobicity, air permeability and weather resistance. When it is used in the synthetic modification of water-based polyurethane, the leather obtained after finishing will have better wet-resistance and friction resistance, and feel more smooth and comfortable.

Used as a leather binder

Some leather back coating, because the coating is not resistant to shoe-making adhesive solvent immersion damage, will cause the coating peeling, hydroxyl silicone oil because of its good air permeability, weather resistance, corrosion resistance and non-toxic advantages, can effectively solve the phenomenon of peeling back coating.

fangzhizhuji

In textile and garment industry can be used as fabric softener, lubricant, waterproof agent, finishing agent, etc. In order to adapt to the high-end demand of textiles, chemical products are also constantly developing with a variety of functional additives such as waterproof agent, flame retardant, antistatic agent, fixing agent bath use, feel good hydroxyl silicone oil. In addition, in order to improve the performance of the fabric, there are hydroxyl silicone oil products that can be used in the same bath with dyeing, cotton silicone oil with cool feeling, hydroxyl silicone oil products that can improve the feel of the fabric, and hydroxyl silicone oil darkening agent that can give the fabric excellent deepening effect, good storage stability, does not affect the color fastness, feel good, etc.. In addition to functional textiles as additives in textiles, hydroxyl silicone oil products will also be used in other areas of textiles, such as the combination of silicone and polyurethane fabric coating; Printing of fabric formed by polymerization of silicone and acrylic acid; Organic silicon and organic fluorine combined to form waterproof coating on fabric surface.

Applied to coating industry

Hydroxyl silicone oil can improve the production process of paint, maintain the storage stability of paint, improve its construction technology, improve product quality, give paint some special functions, such as leveling, scratch resistance, anti-adhesion, pigment dispersion, smooth, surface special effect, wetting, hydrophobic, antifoaming foam and so on. Now hydroxyl silicone oil has become an indispensable component in coatings, reasonable and correct selection of hydroxyl silicone oil additives, can effectively reduce costs and improve benefits. Different coating systems, the selection of hydroxyl silicone oil additives are different, but each additive has a variety of effects, sometimes can also be used in other systems.