(1) Adequate methyl groups on Si atoms shield the high energy polysiloxane main chain;
(2) C-H is non-polar, so that the interaction between molecules is very weak;
(3) Si-O bond length is longer and Si-O-Si bond Angle is larger.
(4) Si-O bond is a covalent bond with 50% ionic bond characteristics (covalent bond has directivity, ionic bond has no directivity).Because of organic silicon unique structure, with the performance of the inorganic materials and organic materials, with low surface tension, small viscosity-temperature coefficient, high compressibility and high gas permeability basic properties, and has high and low temperature resistance, electrical insulation, resistance to oxidation stability, weather resistance, flame retardant, hydrophobic, corrosion resistance, non-toxic, tasteless, and physiological inertia and other excellent properties,Widely used in aerospace, electronic and electrical, construction, transportation, chemical, textile, food, light industry, medical and other industries, among which silicone is mainly used in sealing, bonding, lubrication, coating, surface activity, demolding, defoaming, foam suppression, waterproof, moistureproof, inert filling, etc..With the continuous growth of the number and varieties of organosilicon, its application fields are constantly broadened, forming a unique and important product system in the field of new chemical materials. Many varieties are indispensable and irreplaceable by other chemicals.Silicone materials according to their different forms, can be divided into: silane coupling agent (organosilicylation reagent), silicone oil (silicone grease, silicon emulsion, silicon surfactant), high temperature vulcanized silicone rubber, liquid silicone rubber, silicone resin, complex, etc..