high security bolt seals

high security bolt seals
high security bolt seals

2013年8月7日星期三

Application of organic silicon products

Silicone products have good resistance to high and low temperature performance, can usually be at 180 ℃ under high temperature long-term work. Silicone rubber at 250 ℃ can work a long time, instantaneous ability over 1000 degrees Celsius. Silicone Materials Low temperature performance is good, generally -55 ℃ can still work. Some of the silicone rubber is still elastic at -110 ℃. Silicone material has good electrical insulation properties, dielectric properties do not vary with temperature and radical change; permittivity increases without increasing frequency value; and arc resistance, corona resistance, leakage; resistant to ozone, radiation, tamper proof padlocks weathering , flame retardant, so extremely versatile. Below are several categories of silicone products were briefly a part of the main purposes:
1 silane coupling agent is a silane coupling agent class of low molecular weight compounds, the silicon atoms are connected to one end of a variety of hydrolysable chlorine or an alkoxy group, the hydrolysis can be connected with inorganic; other end with a variety of the role of organic phase functional groups such as amino group, a vinyl group, a mercapto group, and the silane coupling agent, organic and inorganic substances can bridged together. Silane coupling agents are commonly used in hundreds of species. Such as glass, steel, glass fibers to be used is necessary to use a vinyl-containing coupling agent to improve the wet strength. The current popularity of "green" tires on the extensive use of thiol-containing silane coupling agent; vinyl trialkoxysilane with crosslinked polyethylene, its working temperature can be high than ordinary polyethylene and polyvinyl chloride, suitable hot water system pipes, cable sheathing.
(2) silicone oil or a silicone oil containing a single type of low molecular weight organic polysiloxane groups,wire seal can be made into a variety of different viscosity. Low surface tension of silicone oil, a large contact angle with water, water repellent material of high quality. Silicone oil viscosity-temperature coefficient of variation is small, does not solidify at low temperatures and is resistant to both high temperature and low temperature aerospace gyroscope oil, antifreeze and heat-resistant lubricating oil, hydraulic oil, instrument oil, base oil, as well as steam low pressure high vacuum diffusion pump oil. Silicone oil or a modified formulation in cosmetic applications has grown rapidly in recent years. Silicone oil paint on the skin not greasy feeling smooth, comfortable, can be made into various skin creams and so on.

没有评论:

发表评论