What is the suitable temperature for silica gel coating on m
编辑:周周 日期:2019-09-11 14:56 浏览:
There are many kinds of silica gel on the market. Generally speaking, silica gel can be divided into organic silica gel and inorganic silica gel according to its properties and composition.
Is there any temperature requirement for semi-finished product coated with silica gel?
Three kinds of silica gels commonly used include epoxy silicone gel, silicone resin gel and silicone rubber. Adding silica gel to liquid silica gel can withstand high and low temperatures for a long time - 55 - 220 C, but can withstand higher or lower temperatures if the time is short.
The curing principle of silica gel is hygroscopicity curing. If the temperature increases properly, curing will accelerate. Therefore, it is appropriate to control storage temperature and humidity. It is suggested to store it in a cool and dry place at 8 - 28 C. The suitable storage temperature is 8 - 21 C. Of course, different silica gel formulations are different. Specific storage methods can see the scope of application of silica gel coating temperature in the product description, which requires storage methods.
Inorganic silica gel is a kind of highly active adsorbing material, which is usually prepared by the reaction of sodium silicate with sulfuric acid, after aging, acid soaking and a series of post-treatment processes. Inorganic silica gel can also be divided into beer silica gel, pressure swing adsorbing silica gel, medical silica gel, chromotropic silica gel, silica gel desiccant, silica gel opener, toothpaste silica gel, etc. The temperature range of silica gel coating is determined according to its application.
Silicone gel (silicone gel) is an organosilicon compound. It refers to compounds that contain silicon carbon bonds and at least one organic group is directly linked to silicon atoms. Usually compounds that connect organic groups to silicon atoms by oxygen, sulfur, nitrogen and so on are commonly recognized as organosilicon compounds.