1. What is vinyl silicone oil?
Chemical name: double-capped vinyl silicone oil
Its main structural feature is that part of the methyl group (Me) in polydimethylsiloxane is replaced by vinyl (Vi), resulting in the formation of reactive polymethylvinylsiloxane. Vinyl silicone oil exhibits the physical form of a liquid fluid due to its unique chemical structure.
Vinyl silicone oil is mainly divided into two types: end vinyl silicone oil and high vinyl silicone oil. Among them, terminal vinyl silicone oil mainly includes terminal vinyl polydimethylsiloxane (Vi-PDMS) and terminal vinyl polymethylvinylsiloxane (Vi-PMVS). Due to the different vinyl content, it has different application characteristics.
The reaction mechanism of vinyl silicone oil is similar to that of dimethicone, but due to the vinyl group in its structure, it has higher reactivity. In the process of preparing vinyl silicone oil, the ring-opening equilibrium reaction process is mainly used. The process uses octamethylcyclotetrasiloxane and tetramethyltetravinylcyclotetrasiloxane as raw materials, and forms a chain structure with different degrees of polymerization through a ring-opening reaction catalyzed by acid or alkali.
2. Performance characteristics of vinyl silicone oil
1. Non-toxic, tasteless, no mechanical impurities
Vinyl silicone oil is a colorless or yellowish, transparent liquid that is non-toxic, odorless, and free of mechanical impurities. This oil is insoluble in water, but it can be miscible with benzene, dimethyl ether, methyl ethyl ketone, tetrachlorocarbon or kerosene, and slightly soluble in acetone and ethanol.
2. Smaller vapor pressure, higher flash point and ignition point, lower freezing point
These properties make vinyl silicone fluids stable and non-volatile in high temperatures or special environments, thus ensuring their longevity in a variety of applications.
3. Strong reactivity
Double-capped vinyl silicone with vinyl at both ends, which makes it highly reactive. Under the action of catalyst, vinyl silicone oil can react with chemicals containing active hydrogen groups and other active groups to prepare various silicon products with special properties. During the reaction, vinyl silicone oil does not release other low-molecular-weight substances and has a small amount of reaction deformation, which further improves its practicality in the chemical industry.
4. Excellent slip, softness, brightness, temperature and weather resistance
These properties make vinyl silicone fluids have a wide range of applications in the modification of plastics, resins, paints, coatings, etc. At the same time, it can also be used as a basic raw material in the production of high-temperature vulcanized silicone rubber (HTV) to enhance the strength and hardness of silicone rubber. In the production of liquid silicone rubber, vinyl silicone oil is also the main raw material for injection molding silicone rubber, electronic glue, and thermal conductive rubber.
3. Application of vinyl silicone oil
1. Base material of high-temperature vulcanized silicone rubber (HTV):
Vinyl silicone oil is mixed with crosslinkers, reinforcing agents, colorants, structure control agents, anti-aging agents, etc., and is used to prepare high-temperature vulcanized silicone rubber raw rubber. This silicone rubber has good stability and durability in high-temperature environments, and is widely used in various occasions that require high temperature resistance and corrosion resistance.
2. The main materials of liquid silicone rubber:
Vinyl silicone oil can be used in combination with hydrogen-containing crosslinkers, platinum catalysts, inhibitors, etc., to prepare additive liquid silicone rubber. This silicone rubber has good fluidity, formability and elasticity, and is widely used in the silicone industry, textiles, protective films and other fields.
3. Preparation of new materials:
Vinyl silicone oil reacts with a variety of organic materials such as polyurethane and acrylic acid to prepare new materials with better performance. These new materials have the characteristics of weather resistance, aging resistance, ultraviolet resistance, and enhanced toughness, and are widely used in coatings, adhesives, sealing materials and other fields.
4. Applications in the field of electronics:
Vinyl silicone oil is widely used in electronic adhesives, thermally conductive adhesives, LED lamp adhesives, LED packaging and electronic component potting. It provides a perfect sealing function to protect extremely sensitive electronic components and components from external contamination or movement, ensuring the stability and reliability of electronic devices.
5. The main raw materials of the release agent:
The release agent plays a role in preventing adhesion in industrial production, which contributes to the smooth release of products and the improvement of production efficiency.
4. Vinyl silicone oil market development trend
1.Expansion of the field of application
Vinyl silicone fluids are not only widely used in traditional chemical, pharmaceutical, electronic and other fields, but also play an important role in cosmetics and personal care products, lubricants, bearing lubricants, sealing materials, inks, plastics and rubber. Especially in the field of cosmetics, vinyl silicone oil is widely used in the manufacture of soaps, shampoos, moisturizers, lotions, conditioners and other products due to its excellent lubricity and permeability.
2.New functional vinyl silicone oil
Manufacturers can develop a wider range of functional vinyl silicone fluids by continuously improving the formula and optimizing the production process to improve the viscosity, fluidity, stability and other properties of vinyl silicone oil. Such as light-curing, cationic-curing, biocompatible, etc., suitable for a wider range of applications.
3.Vinyl silicone oil green preparation
With the enhancement of environmental awareness, the development of environmentally friendly new processes for the green preparation of vinyl silicone oil, such as the use of biodegradable monomers, solid catalysts, ionic liquids, etc., to reduce the use of toxic solvents and by-products, and achieve sustainable development.
4.Nano vinyl silicone oil material
Design and synthesis of vinyl silicone oil materials with special nanostructures, such as vinyl silicone oil nanoparticles, nanofibers and molecular brushes, etc., to endow the materials with unique surface effects and interface properties, and open up new application fields.
5.Packaging, storage and transportation
This product is a chemically active material, and shall not be mixed with impurities (especially catalysts) during storage and transportation, and should be avoided from contact with substances that can trigger its chemical reaction, such as acids, alkalis, oxidants, etc., to prevent denaturation, and be stored in a cool and dry place. This product is non-dangerous goods and can be transported according to the conditions of ordinary goods.
Post time: Jul-05-2024