The silica gel we generally say has two physical states, one is the active liquid; One is a solid. Non-solid silica gel that can act like water is called liquid silica gel; Of course, liquid silica gel has a certain viscosity, generally will be more dense than water, therefore, activity is not as strong as water.
When liquid silica gel encounters curing agent or catalyst, it will solidify and react. According to different kinds of liquid silica gel, it will solidify into solid silica gel with different hardness and different functions.
Liquid silica gel can be divided into:
1. Mold silica gel
Mould liquid silica gel is a new material for mould making. Compared with steel mould, the mould made by mould silica gel has great advantages in production power and production cost. Now, mold silica gel has been widely used in toys and gifts work, medical, electronic, mechanical categories, character reproduction, home building decoration work, unsaturated resin handicraft work, animal and plant simulation sculpture, Buddha carving handicraft and other operations of mold manufacturing.
2. Pad printing silica gel
Pad printing liquid silica gel is used in the manufacture of pad printing heads, mainly used in the printing of plastic toys, electroplating products, electronic toys, trademarks and irregular pictures. Pad printing glue head is to make the drawing on the steel plate as the carrier through the glue head, and then transfer the drawing on the steel plate to the toy product. Pad printing liquid silica gel can be controlled by increasing the hardness of silicone oil.
3. Electronic sealing of silica gel
Electronic potting liquid silica gel is mainly used in the potting of electronic products. The application of electronic potting liquid silica gel can seal electronic products, waterproof, dustproof, thermal conductivity, shockproof, insulation and other effects. The other is a potting sealant for LEDS, which has high transparency and high refractive index.
4. Silicone hand plate
Hand plate liquid silica gel is also known as the first version of silica gel, which is generally used for the manufacture of hand plate models. Compared with the characteristics of wear resistance and strong resilience after curing of hand plate oily hand plate liquid silica gel.
5. Silicone rubber
Silicone rubber is commonly known as glass glue, it is also a kind of liquid silicone. The silicone sealant is added randomly during the application process. When water molecules in the air are encountered, they solidify into a tough solid, and then bond to the cracks in the glass. The cured silicone rubber has the characteristics of weather resistance, vibration resistance, moisture resistance, odor resistance and great change in cold and hot habits.
6. Silicone clothing label
After the solidification of liquid silica gel garment labels, we often see the silica gel labels of garment manufacturers. The use of liquid silica gel manufacturing clothing labels with good feel, wear - resistant, high - grade production power characteristics.
7. High temperature silica gel
General for the manufacture of silicone mold high temperature mold silica gel can withstand high temperature between 200~300 degrees Celsius, and used in aviation and hot stamping and other operations, high temperature liquid silica gel curing can be in the environment of 400℃ to 1300℃ for a long time without functional changes.
8. Human silicone
Human silica gel is a kind of liquid silica gel with low solidification hardness. It is environmentally friendly, non-toxic and has no adverse effects on human body. Therefore, it can be implanted into the human body and is generally used for the manufacture of artificial limbs. It can also be used to simulate characters, etc.