Product characteristics of silicone products |
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| Reading Volume： 【 2577 】 | Time： 【 2019-02-07 】 | |
| basic introduction The basic structural unit of organic silicon products is composed of silicon-oxygen chain links, and the side chains are connected to various other organic groups through silicon atoms. Therefore, the structure of organic silicon products contains both "organic groups" and "inorganic structures". This special composition and molecular structure makes it integrate the characteristics of organic substances and the functions of inorganic substances. Compared with other polymer materials, the most outstanding properties of silicone products are: Temperature resistance Silicone products are based on the silicon-oxygen (Si-O) bond as the main chain structure. The bond energy of C-C bond is 82.6 kcal/mole. The bond energy of Si-O bond is 121 kcal in silicone /Mole, so the thermal stability of silicone products is high, and the chemical bonds of molecules will not break or decompose under high temperature (or radiation exposure). Silicone is not only resistant to high temperatures, but also resistant to low temperatures, and can be used in a wide temperature range. Whether it is chemical properties or physical mechanical properties, the change with temperature is very small. Weather resistance The main chain of organic silicon products is -Si-O-, there is no double bond, so it is not easy to be decomposed by ultraviolet light and ozone. Silicone has better thermal stability and radiation resistance and weather resistance than other polymer materials. The service life of silicone in natural environment can reach several decades. Electrical insulation properties of organic silicon products Silicone products have good electrical insulation properties. Their dielectric loss, voltage resistance, arc resistance, corona resistance, volume resistivity and surface resistivity are among the best in insulating materials, and their electrical properties are affected by temperature and frequency. The impact is very small. Therefore, they are a kind of stable electrical insulating materials, which are widely used in the electronics and electrical industries. In addition to excellent heat resistance, silicone also has excellent water repellency, which is a guarantee for high reliability of electrical equipment used in wet conditions. Biological characteristics Biologically active silicone is an essential nutrient for the human body. Silicone is an important element that constitutes human tissues and participates in metabolism. It is stored in every cell of the human body and serves as a support for cell construction, while helping to absorb other important substances such as magnesium, phosphorus, and calcium. The human body can only continuously obtain silicone through food. Scientists believe that silicones mainly exist in the human body in three forms: 1. Soluble organic silicon, 10% by weight 2. Thirty percent exists in various cell substrates 3. 60% is used to synthesize protein, which shows that our daily requirement of silicone is quite high. If you want to stay young for 5 years, 10 years, or even 30 years, it is particularly important to consume 20-30 mg of silicone a day. Low surface tension and low surface energy The main chain of organosilicon is very flexible, and its intermolecular force is much weaker than that of hydrocarbons. Therefore, it has lower viscosity than hydrocarbons of the same molecular weight, weak surface tension, low surface energy, and strong film-forming ability. This low surface tension and low surface energy are the main reasons for its many applications: hydrophobic, defoaming, foam stability, anti-sticking, lubrication, glazing and other excellent properties. use Since silicone has these excellent properties, its application range is very wide. It is not only used as a special material for aviation, cutting-edge technology, military technology, but also used in various sectors of the national economy. Its application range has been expanded to: construction, electronics and electrical, textiles, automobiles, machinery, leather and paper, chemical light industry, Metal and paint, medicine and medical treatment, etc. |
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