The classification of the silicone material and product features
Silica gel is a word for a lot of to make the silicone is not strange craft gift manufacturer, know silica gel is a kind of environmental protection silicone material, can be made into all kinds of silicone gifts. The silica gel mainly have the classification?
Silica gel is an industry term (silica gel), silica gel and can be called silicon rubber, silicon likang.
Silica gel mainly can be divided into: silicon rubber, mold silicone rubber, hand gel design, hand-board model with silicone, rubber pad printing, pad printing silicon rubber, pad printing silicone rubber, shoe's molding, RTV - 2, RTV - 1, room temperature vulcanization silicone rubber, liquid silicone, half liquid silicone, HTV - 1 high temperature silicone, plastic mixing, forming silica gel, silica gel, HTV methyl alkenyl - 1, HTV - 2, hot stamping with silica gel plates, silica gel roller printing industry, silicone tube, silicone seal, electronic potting glue, silica gel for LED display, LCD and so on, all generally referred to as the silica gel silica gel products.
Environmentally friendly non-toxic properties of silica gel, making it widely used in various industries, including health care, gift and craft used in the majority.
Characteristics of silica gel
Organic silicone products are the basic structure of the unit is made of silicon, oxygen link, side chain is through the silicon atoms connected to a variety of other organic groups. Therefore, in the structure of the organic silicon products containing both organic groups ", and "inorganic" structure, the special composition and molecular structure to make it sets the properties of the organic matter and inorganic matter of functions in one. Compared with other polymer materials, silicone products, the most outstanding performance is:
A. and heat-resistant properties
Organic silicon product is silicon (Si -) O - oxygen key chain structure of C - C key in the key to 82.6 kcal/mol, Si - O can key in the key in the organic silicon is 121 kcal/mol, so silicone products with high thermal stability, high temperature (or radiation exposure) molecular bonds do not fracture, do not break down. Organic silicon not only can resistance to high temperature, and also low temperature resistant, can be used in a wide temperature range. Chemical properties and physical and mechanical properties, along with the change of temperature is small.
B. physiological inert
Polysiloxane compounds are known to one of the most inactive compounds. They are very resistant to biological aging, and animal body without rejection, and has good anticoagulant capability.
C. electrical insulation performance
Organic silicon products have good electrical insulating properties, the dielectric loss, voltage resistance, arc resistance, corona resistance, volume resistivity and surface resistivity of all came out on top in the insulation material, and their electrical performance is affected by temperature and frequency is small. As a result, they are a kind of stable electric insulation material, is widely used in electronics, electrical industry. Organic silicon besides has excellent heat resistance, also have good water repellency, which is using electrical equipment in wet conditions with high reliability.
Organic silicon products main chain - Si - O -, no double bonds exist, therefore not easy decomposition by ultraviolet and ozone. Organic silicon has better thermal stability than other high polymer materials as well as the ability of radiation resistance and weather resistance. Organic silicon in the life of the natural environment can be up to several decades.
E. low surface tension and surface energy
Organic silicon in the main chain is very smooth, the intermolecular force is much weaker than hydrocarbons, therefore, than with low molecular weight hydrocarbons viscosity, surface tension, surface energy is small, film forming ability. This kind of low surface tension and low surface energy is the main cause of it to achieve various applications: hydrophobic, foam, foam stability, adhesion, lubrication, polishing, etc all the outstanding performance.