The basic structural unit (that is, the main chain) of silicone products is composed of silicon-oxygen chains, and the side chains are connected to various other organic groups through silicon atoms. Therefore, the structure of silicone products contains both "organic groups" and "inorganic structures". This special composition and molecular structure make it integrate the characteristics of organic matter and the function of inorganic matter, and has high and low temperature resistance. , weathering resistance, electrical insulation, ozone resistance, hydrophobicity, flame retardant, non-toxic, non-corrosive and physiologically inert, and many other excellent properties, some varieties also have oil resistance, solvent resistance, radiation resistance. Compared with other polymer materials, the most outstanding properties of silicone products are excellent temperature resistance, dielectric properties, weather resistance, physiological inertness and low surface tension.

Dimethicone has a wide range of uses, and it is often used in the production of cosmetics to improve the performance of cosmetics. The combination of low surface tension and viscosity of dimethicone makes it easy for other components of cosmetics to diffuse into a thin film on the skin without stickiness. Beeswax, lanolin, etc. are combined to obtain non-sticky products. Volatile silicone oil can endow cosmetics with quick-drying, smooth, anti-fouling luster and other properties. As a cosmetic carrier, it can quickly dissipate and make other cosmetic components Evenly distributed film, which is important in eye beauty products and nail polish, and in hair care products, dimethicone can add shine to hair, while it can play a role in styling and preventing hair from sticking together, In shampoos, dimethicone can make hair easy to comb. In skin care products, the hydrophobic film formed by silicone oil can prevent other components from being washed away by water, and can keep the skin normally breathable. At present, silicone oil has become many An important ingredient or adjuvant in cosmetics.

Surfactants are a class of organic compounds that contain both hydrophobic and hydrophilic groups. It can be low molecular or high polymer. Surfactants can be divided into cationic, anionic, nonionic and zwitterionic according to the type of their hydrophilic groups. Silicone surfactants can also be classified as such. The hydrophobic group of silicone surfactants is composed of alkyl siloxanes with stronger hydrophobicity than carbon chains, and has stronger surface activity than carbon chains. In the same concentration solution, it has a lower surface tension. With the expansion of the production scale of silicone monomers and the in-depth research on the follow-up products of silicone, people's understanding of silicone surfactants has been further deepened, the variety of silicone surfactants has continued to increase, and the application fields have continued to expand.

Huangshan Qiangli Chemical Co., Ltd. Enterprise Environmental Report Final Edition

The silicone oil fan clutch uses silicone oil as a medium, uses the high viscosity of silicone oil to transmit torque, and uses the temperature of the air behind the radiator to automatically control the separation and engagement of the fan clutch through a temperature sensor.

Silicone Low Surface Energy Antifouling Coatings Silicone polymers mainly include three types: silicone resin, silicone rubber, and silicone oil. The silicone polymers used for coatings are mainly silicone resins and modified silicone resins. Among them, silicone resins are highly branched. Structured polymethylsiloxane (PDMS), modified silicone resins include alkyd resins, epoxy resins, acrylic resins, polyurethane resins, fluorocarbon resins, etc. Davies et al. used amino- and methoxy-containing DDMS and hydroxyl-terminated PDMS to react under the action of a catalyst (dibutyltin dilaurate) to prepare an antifouling product with low surface energy, suitable elasticity and reduced adhesion strength coating. Wang Ke et al. added polydimethylsiloxane silicone oil when preparing low surface energy silicone antifouling coatings. Various tests on the coating film showed that the addition of an appropriate amount of silicone oil can further reduce the surface energy of the coating and increase the hydrophobicity. , which can significantly improve the antifouling effect of the coating film.

It is estimated that 85% of all innovations in automotive applications today are electrical or electronic related. As electromechanical is rapidly replacing traditional mechanical and hydraulic functions, and consumers demand new value-added electronic functions, some experts believe that the value content of electronic technology in each vehicle will soon reach an average of 40%, compared with a decade ago. thought it was impossible. Unfortunately, failure rates due to electrical/electronic failures are also on the rise, prompting OEMs and Tier 1 suppliers to adopt demanding reliability standards, leading many manufacturers to seek out new materials and designs to change this trend. Heat, especially when high humidity and other adverse environmental conditions are also present, often causes components to fail. When temperature fluctuates widely (the most common situation in automotive applications), joints and components experience fatigue caused by thermal expansion and contraction, which can lead to mechanical failure. Metal dendrites can grow in the tight spaces between circuit board traces, eventually leading to short circuits and component failure. It has also been found that the reliability and lifetime of semiconductor devices depend on the junction temperature, and a reduction in temperature of 10-15°C can double the component lifetime.

Compared with traditional drive technology, the working efficiency of electric vehicle drive is significantly improved, and no emissions are produced. Even if the all-electric drive is not used, the emissions and energy consumption of vehicles using hybrid technology can be greatly improved. According to statistics, the annual growth rate of the automotive electronics industry exceeded 15% from 2013 to 2018, and hybrid and pure electric vehicles are expected to account for 1/3 of the total vehicle production in 2025. Driven by the trend of electronics, the research and development of high-efficiency electric motors has become a hot spot in the new energy vehicle industry. In electric drive systems, the amount of high-performance insulating materials and the demand for electronic bonding and thermally conductive potting materials have risen significantly, which means that the demand for connector harness seals and electronic insulation will greatly increase, and innovative electrode materials will be required. needs are more urgent. Strong silicone products have a rich product line, its innovative coil insulating silicone oil raw material, electronic bonding sealant raw material vinyl silicone oil and thermal conductive adhesive, and liquid silicone rubber product raw material silicone oil. The powerful silicone oil raw material has many advantages such as high purity and high quality, which is not inferior to the silicone oil raw material as soon as possible. Therefore, the downstream use of strong silicone oil products has good adhesion, sealing, vibration damping and electrical isolation to ensure the flexibility of the adhesive layer, prevent moisture intrusion, and provide long-term safety and reliability for the motor.

Used for production of high temperature vulcanized (HTV) silicone rubber makings, crosslinking agent and reinforcing agent, colorant, structure control agent, aging resistant agent and other mixed refining for high temperature vulcanization silicone rubber

2021 The 9th China International Fluorosilicon Material Application Exhibition