Basic introduction
The basic structural unit of organosilicon products is composed of silicon-oxygen chain joints, and side chains are connected to various other organic groups through silicon atoms.Therefore, the structure of organosilicon products contains both "organic group" and "inorganic structure", this special composition and molecular structure makes it set the characteristics of organic matter and inorganic function in one.Compared with other polymer materials, the most outstanding performance of silicone products is:
Heat resistance properties
Silicone products are silicon - oxygen (Si-O) key chain structure, C-C bond energy of 82.6 kilocalories/gram molecule, Si-O bond energy in silicone is 121 kilocalories/gram molecule, so the thermal stability of silicone products is high, high temperature (or radiation) molecular chemical bonds do not break, do not decompose.Silicone not only can withstand high temperature, but also low temperature, can be used in a wide temperature range.Both chemical and physical mechanical properties change very little with temperature.
Weather resistance
The main chain of organosilicon products is -Si-O-, no double bond exists, 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 organic silicon in the natural environment can reach several decades.
Electrical insulation performance
Silicone products have good electrical insulation performance, its dielectric loss, voltage resistance, arc resistance, corona resistance, volume resistivity and surface resistivity are among the best insulating materials, and their electrical performance is very little affected by temperature and frequency.Therefore, they are a stable electrical insulation material, which is widely used in electronic and electrical industries.In addition to excellent heat resistance, silicone also has excellent water repellency, which is the guarantee of high reliability for the use of electrical equipment under wet conditions.
Biological characteristics of
Bioactive silicone is an essential nutrient for human body.Organosilicon is an important element that constitutes human tissue and participates in metabolism.It's found in every cell of the body, acts as a support for cell construction and assists in the absorption of other important substances such as magnesium, phosphorus and calcium.The human body can only continuously obtain silicone through food.
Scientists believe organosilicon exists in the body in three main forms:
(1) soluble organic silicon, accounting for 10% of the weight
(2) 30% are present in various cell matrices
(3) 60% is used to synthesize protein, which means that our daily requirement of silicone is quite high.
It is important to consume 20-30 mg of silicone per day if you want to stay young for 5, 10 or even 30 years.
Low surface tension and low surface energy
The main chain of silicone is very supple, the intermolecular force is much weaker than hydrocarbons, therefore, than the same molecular weight hydrocarbon viscosity is low, weak surface tension, surface energy is small, film forming ability is strong.This low surface tension and low surface energy is the main reason for its many applications: hydrophobic, defoaming, foam stability, anti-stick, lubrication, glazing and other excellent properties.
