Silicone defoamer several major characteristics:
Silicone defoamer temperature resistance
Silicone defoamer products are silicon-oxygen (Si-O) bonds as the main chain structure, C-C bond bond energy of 82.6 kcal / mole, Si-O bond bond in the silicone defoaming Agent for the 121 kcal / mole, so the thermal stability of silicone antifoam products, high temperature (or radiation exposure) molecular chemical bonds do not break, not decomposition. Silicone defoamers not only high temperature, but also low temperature, can be used in a wide temperature range. Whether it is chemical or physical and mechanical properties, with the temperature changes are very small.
Silicone defoamer Weatherability
Silicone defoamer products for the main chain - Si-O-, no double bond exists, it is not easy to be ultraviolet and ozone decomposition. Silicone defoamers have better thermal stability and resistance to radiation and weathering than other polymer materials. Silicone defoamers in the natural environment of the service life of up to several decades.
Silicone defoamer electrical insulation properties
Silicone defoamer products have good electrical insulation properties, their dielectric loss, withstand voltage, arc resistance, corrosion resistance, volume resistivity and surface resistance coefficient are among the best in the insulation materials, and their electrical performance by Temperature and frequency effects are small. Therefore, they are a stable electrical insulation material, is widely used in electronics, electrical industry. Silicone defoamers, in addition to excellent heat resistance, also has excellent water repellency, which is the use of electrical equipment in the wet conditions with high reliability protection.
Silicone defoamer physiologically inert
Polysiloxane compounds are one of the most inactive compounds known. They are very resistant to biological aging, and animal body without rejection, and has good anticoagulant properties.
Silicone defoamer Low surface tension and low surface energy
The main chain of silicone defoamer is very supple, and its intermolecular force is much weaker than that of hydrocarbons. Therefore, it has a lower viscosity than the same molecular weight hydrocarbon, weak surface tension, small surface energy, film forming ability Strong. This low surface tension and low surface energy is the main reason for its many applications: hydrophobic, defoaming, foam stability, anti-sticking, lubrication, glazing and other excellent performance.