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Cured Silicone Rubber Has Good Electrical Insulation Properties

Nov 01, 2017

Curing silicone rubber is a new type of silicone elastomer that came out in the 1960s. The most remarkable feature of this rubber is that it can be cured at room temperature and can be cured at room temperature. As a result, the advent of the whole becomes a major component of the entire silicone product.

Cured silicone rubber has been widely used as adhesives, sealants, protective coatings, Condensation Cure Silicone Rubber potting and molding materials, in all walks of life have its use.

Cured silicone rubber with flame retardant, a single component, room temperature curing, high temperature, environmental protection and so on. Condensation Cure Silicone Rubber Is the power adapter, charger and switching power supply and other components of all products, bonding, fixing, insulation, sealing the best choice, reduce costs and improve efficiency.

Cured silicone rubber product features?

Fast curing: the product dry time is short (≤ 10min), deep curing fast, is conducive to fast bonding. After curing the adhesive layer is elastomer; after the release of alcohol substances, the vast majority of metal corrosion; excellent extrusion, suitable for machine dispensing. Small molecular content of less than 300ppm; have excellent weather resistance, moisture resistance, heat resistance; Condensation Cure Silicone Rubber good electrical insulation properties. Excellent bonding properties, for most metals and plastics, ceramics and glass have good adhesion. Excellent flame retardant performance, through the UL94 V0 certification (UL FileNo.E343835); fully comply with the requirements of the EU ROHS directive.

Characteristics of cured silicone rubber:

1. Temperature characteristics

C - C bond is composed of silicon - oxygen (Si - O) bond as the main chain structure. The bond energy of C - C bond is 82.6 kcal / mole, and the bond of Si - O bond is 121 kcal in organic silicon / Mole, so the thermal stability of silicone products, high temperature (or radiation exposure) molecular chemical bonds do not break, not decomposition. Silicone can not only high temperature, but also low temperature, Condensation Cure Silicone Rubber can be used in a wide temperature range.

2. Electrical insulation performance

Cured silicone rubber has good electrical insulation properties, its dielectric loss, withstand voltage, arc resistance, corrosion resistance, volume resistivity and surface resistance coefficient are among the best in the insulation, Condensation Cure Silicone Rubber and their electrical performance by the temperature and frequency The impact is very small. Therefore, they are a stable electrical insulation material, is widely used in electronics, electrical industry. Silicone in addition to excellent heat resistance, Condensation Cure Silicone Rubber but also has excellent water repellency, which is the use of electrical equipment in the wet conditions with high reliability protection.

3. Weatherability

The main chain of the cured silicone rubber is - Si - O -, the existence of double bond, so it is not easy to be decomposed by ultraviolet light and ozone, with excellent resistance to ozone, antioxidant atoms and antioxidant plasma and other characteristics. These features are not available with many organic polymers, so when a weathering sealant is formulated with a common organic polymer as the main polymer, it is necessary to add an antioxidant or anti-UV additive to the sealant without the addition of weathering additives Silicone sealant has long been exposed to outdoor weather conditions do not crack does not shrink, Condensation Cure Silicone Rubber the service life of up to several decades. Their excellent durability Weathering Aging avoids additional work such as frequent replacement or maintenance, which reduces overall costs and costs.


Cured silicone rubber can be formulated into a wide range of products with a wide range of viscosity and rheology. Condensation Cure Silicone Rubber After debugging recipe can get low viscosity self-leveling products, can also be prepared with a good paste and good thixotropy silicone sealant. Paste thixotropic products in the vertical surface of the construction will not produce flow or sagging phenomenon, this feature in various industrial areas to promote the application is very important.