There are many forms of silicone used to form a silicone coating. This includes heat-cured types and room temperature vulcanising (RTV). Heat cured silicone is cured in a similar way to other rubbers using ovens and direct heat. RTV’s are not vulcanised with sulfur but instead are hardened with a catalyst from an initial viscous state.
When people think of silicone, the first thing that springs to mind are the types used in bathrooms, there are effectively RTV’s and are produced with fillers in order to keep the cost down for domestic use.
Other uses for silicone is as an adhesive. You will see this on our Tefsil range of products such as Tefsil 5 Adhesive. We also offer silicone coating on the surface on PTFE coated glass fabrics such as our product SIL-056.
Another interesting use for RTV silicone coating is as a bonding agent for the silica tiles used to protect against the intense heat experienced on the bottom of the space shuttle such as Atlantis.
Here are some key features of silicone rubber.
- Resistance to low and high temperatures (-115 to +232 Celsius)
- Non-stick surface – easy release
- Easy to clean surface
- Excellent resistance to chemical attack
- Fungus and mildew resistant
- Electrical insulation properties
- Some grades are suitable for food contact
- Can be manufactured metal detectable
Silicone rubber was originally developed by the American General Electrical Company. One of the largest manufacturers of silicone rubber and silicone coating is now Dow Corning. Dow corning originally produced silicone rubber under licence from the American General Electric Company.
If you have a requirement for silicone coated glass cloth or PTFE adhesive tapes with a silicone adhesive, please get in touch with Techbelt on 0044(0) 1422 366386. We have free samples which we would be pleased to send you for evaluation.