Silicone adhesive can be obtained at room temperature by using different silicone polymers, additives and fillers, after heating or radiation curing. Silicone adhesives have excellent adhesion properties and high temperature resistance, which are widely used in electronics, construction, automotive, aerospace and other fields.
ØWhat are silicone adhesives made of?
1.Main raw material: silicone resin or silicone rubber.
2.Cross-linking agent: Cross-linking agent can cross-link with silicone resin to form a three-dimensional network structure, so as to improve the strength and hardness of the adhesive.
3. Catalyst: It can promote the reaction between cross-linking agent and silicone resin to speed up the curing speed.
4. Filler: It can improve the rheological property and bonding strength of adhesive.
ØFeatures silicone adhesive:
üGood performance of high and low temperature resistance. The molecular structure of silicone resin contains “Si-O” bond, and the bond energy of “Si-O” is high, which provides the silicone adhesive better high temperature resistance.
üExcellent electrical insulation
üWell hydrophobicity and air permeability
üGood adhesion property: silicone resin can be applied in adhesion of metal and non-metal.
ØMain applications of silicone adhesives:
1. Electronic field: Silicone adhesive is widely used in the encapsulation and fixing of electronic components. Because of its excellent electrical insulation and high temperature resistance, it can effectively protect electronic components and prevent it from circuit short.
2. Automotive field: It is used for the bonding and fixing of auto glass, which makes the car safer.
3. Medical devices: Silicone adhesives are widely used in the manufacture and repair of medical devices.
ØHow to further improve the thermal stability of Silicone adhesive under harsh conditions?
Although silicone adhesive has the property of high temperature resistance, when they are exposed to high temperature for a long time, the side organic groups of silicone molecules will be oxidized, and the chain will occur thermal rearrangement degradation, which will eventually lead to the loss of application value.
In order to meet the higher requirement, antioxidants are crucial for silicone adhesives, it could help further improve thermal stability, and prevent products from yellowing.
OMNISTAB Antioxidants for Silicone adhesive:
OMNISTAB AN1135 is a general liquid hindered phenol antioxidant for adhesive. It has low volatility and excellent compatibility
OMNISTAB AO-80 is suitable for the adhesive, whose main material is silicone rubber, and could prevent adhesive from thermal aging degradation.
“OMNISTAB AN616+OMNISTAB AN800” is a cost- effective solution for silicone rubber, it can also be applied to other varieties of adhesives.
If you are interested, welcome to contact our sales staff. Sincerely looking forward to your inquiry!
