Silicone oil is a liquid silicone polymer with different degrees of polymerization and molecular chain structures. Its most outstanding characteristic is that it still maintains excellent thermal stability even in ultra-high temperature situations. The most representative silicone oil is polydimethylsiloxane, whose main molecular chain is a coiled-coil structure, and the methyl group rotates freely around the Si-O bond, which increases the distance between adjacent molecules, makes the intermolecular force smaller, which endows it with excellent low surface tension, air permeability, softness, cold resistance and the characteristic of the viscosity changing little. Polysiloxane compounds can introduce carbon functional groups or organic substituents with specific structures to obtain new physical and chemical properties, which create solutions to various existing and new applications in electrical and electronic, machinery, construction, transportation, agriculture, chemical, medical, health, cosmetic. Common organic substituents include ammonia hydrocarbyl, epoxide hydrocarbyl, hydroxyalkyl group, chlorine hydrocarbyl, carboxyl hydrocarbyl, fluorine hydrocarbyl, long-chain alkyl, and cyanogen hydrocarbyl.
Silicone resin is a low molecular resin synthesized from a three-dimensional siloxane network structure. It is very stable due to the very high Si-O-Si bond energy, which can be used in a wide temperature range, regardless of physical-mechanical properties or chemical properties with little change with temperature. At the same time, silicone resin contains a Si-C bond, which has the characteristics of thermoplasticity, solubility and insulation of inorganic substances. It is usually used in the preparation of silicone coatings, silicone insulating varnishes, silicone adhesives, silicone plastics, etc. 
Silicone emulsion is a silicone that disperses silicone oil evenly in a water system under the action of a surfactant (Compound emulsifier). Because silicone oil does not react with water, it is difficult to disperse in the water system, so its use in some aspects is limited. The silicone emulsion solves this problem and can prepare organic emulsions with different solid contents according to production needs. The properties of silicone emulsions with different solid contents are still maintained when they are diluted to lower concentrations. This is not only convenient for use but also saves packaging space and reduces transportation costs.
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A release agent is a coating that uses a silicone stock solution or is diluted with various diluents. It has low surface tension, low surface energy, and super spreadability, and can form a film on an extremely irregular and complex interface, providing a uniform and regenerative release film between the surface of the substrate and the molded product. It effectively avoids the bonding between the processed product and the substrate, so that the demoulding of the product becomes simple and efficient. Silicone release agent is suitable for various material substrate molding processes, such as molding, extrusion, injection molding, lamination, calendering, etc.
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Liquid silicone rubbers(LSRs ) are a two-component reactive formulation, which is cured at high temperatures after quantitative pumping and mixing by means of an injection molding system. The formulation means that each component contains a catalyst or cross-linking agent that reacts when the two fluids meet to provide predictable mechanical and chemical properties. They rely on fully automated processing and forming, which is the key to high-quality part output and sharply cost reduction achieved. Especially in the medical, automotive fine parts manufacturing is the primary choice. 
High Consistency Rubber (HCR) is a silicone polymer composed of high molecular weight linear polyorganosiloxane. HCR can be adapted to different end-user purposes, using different curing systems to cross-link into three-dimensional network macromolecules, and the commonly used curing systems are organic peroxide cross-linking agents and platinum catalysts. 
RTV-1 silicone is a site molding one-component room temperature cured liquid silicone rubber, which is cured in contact with water molecules of air in non-sealed places. RTV is the abbreviation of Room Temperature Vulcanization, which means vulcanization at room temperature. This type of silicone rubber can be used without special processing equipment or heating. It is cheap and easy to obtain, with good adhesion to materials, fast molding speed, and strong adaptability, which is an ideal material for sealants, adhesives, and protective coating applications.
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RTV-2 silicones are a two-component room-temperature vulcanizing silicone formulation. This type of mixture can be pre-mixed with a certain proportion of crosslinking agent or catalyst according to the end user's use and stored and used by the user in a bicomponent pack. The two parts are crosslinked after being mixed in situ by pouring, coating, or extrusion operations at room temperature. The crosslinking reaction can be polycondensation or addition. It can be customized formula (ingredients or process) to obtain different consistency and chemical, and mechanical properties to meet the application of different occasions.
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