Performance determines purpose






The market of silicone resin is not single, but thousands of niche markets across many industries, disciplines and functions. The following is an example of the special application of silicone resin, so it can be said that it is a versatile material.






One of the first applications was during World War II, in 1943, silicone rubber gasket was used on B-29 searchlights and superchargers 3. No other material can withstand such extreme temperatures. In the late 1940s, this primary use gave birth to an industry. Industrial gaskets and sealants, together with some applications of high temperature rubber, have led to explosive growth in the market. It has rapidly expanded to the automotive, aerospace and professional markets. At this time, the hot vulcanized silicone rubber industry has been established.






Before 1947, silicon defoamer had been used in industry. Based on very low surface tension, they can quickly eliminate foam. By 50s, liquid silicone resin with foam suppression capability was used in polyurethane products with uniform pore structure.






In 1948, the first polysiloxane emulsion was developed and applied to modern tire mold based on silicon release agent. Polydimethylsiloxane (PDMS) is a natural anti adhesion agent, and its function is very similar to mold release agent. At the same time, silicone automotive wax and furniture polish are widely used. In addition, it has unique water repellency for stone and textile 3.






RTV (room temperature vulcanization) silicone is the first silicone rubber product accepted by the majority of users. It has been widely used since it was introduced in 1960. Silicone is considered to be better than other sealants due to its resistance to extreme temperatures and its adhesion to various matrix materials without primer. They can also be used in the construction, glass assembly, medicine, aviation, aerospace, manufacturing, electrical, electronics and automotive markets. Today, the largest part of silicone consumption is in the building materials industry.






RTV silicone sealant for filling is widely used in automobile's flow sealing materials, which is attributed to their ability to withstand high temperature in various states. Silicone is the only elastomer capable of maintaining good flexibility under freezing conditions of - 45 ° C and is therefore also used in the refrigeration industry. This capability also allows silicone to be used in aerospace applications. As the only flexible elastomer at low temperatures, silicone on the moon boots worn by astronauts was the first substance to come into contact with the moon in 1969. In addition to its low temperature flexibility, silicone's UV resistance determines its application in satellites and spacecraft.






In the field of electronic encapsulating adhesive, such as mobile phone, silicone gel has the functions of damp proof, dustproof and waterproof, and can also be used as a absorber for mechanical shock / shock, and also has electrical insulation performance. Their low modulus and high stress dissipation capacity produce internal vibration damping, which determines their use. In addition to high corona resistance and resistance to high voltage ionization, silicone itself is a very good electrical materials and insulation materials. Therefore, silicone can be used in many high-voltage electronic and electrical fields. Conductor insulation and cable terminations are also typical silicone rubber applications. In those areas, they can include more than 90% of the organic cable materials of the same size as the current standard 3. And when the insulated wire is ignited, the external thermal insulation will form ashes, thus maintaining the operation capacity 2.






The thermal insulation of silicone can also upgrade the top of the interval of the extreme hot platform to the wooden shelf counter. In addition, the characteristic data of silicone rubber can also be used in the field of heat conduction, such as the radiator of loudspeakers and laptops. Conductive parameters can be applied to touch screen, electromagnetic interference (EMI) and RF interface devices. Other characteristic values can be described as flame retardancy.






For more than 40 years, due to its long-term water resistance and excellent glass bonding performance, all glass aquariums are assembled and sealed by RTV silicone resin. Another unique use of the new RTV silicone is for permanent leg seams.






PDMS has a high free volume, which leads to the special atomic spacing of silicone resin, so the polymer has a strong permeability to gas and liquid. Considerable unique medical applications resulting from these functions include:






Incompatible materials, such as pharmaceuticals, can be incorporated into PSA repair materials. The drug is placed in a free space inside the silica gel matrix. The rate is controlled by a silica gel matrix (e.g., filler grade, type, additional additives, and crosslinking density), and the drug is released at a designed rate. The drug slowly seeps out of the silica gel matrix and is then absorbed by the skin. Drug delivery systems are relatively new areas that can be applied to any range, from vitamins and nitroglycerine like drugs to antibiotics.






The gas permeability of unfilled silicone rubber is 10 times higher than that of natural rubber. Based on the high permeability of oxygen, the oxygen concentrator runs through a layer of silica membrane. They can increase the oxygen content of the atmosphere around us from 20.9% to 40%, continuously supplying patients. This kind of oxygen bottle is very effective and widely used in patients with respiratory system damage.