Room Temperature Vulcanized Silicone Rubber (RTV) Products
RTV silicone properties
- Ideal solutions for ensuring numerous sealing, bonding and coating operations
- Provide excellent resistance, enabling them to endure harsh weather and other aggressive conditions
- Excellent resistance against aging, maintaining their initial properties far better than competing products, such as plastics or other polymers
- Special additives enable RTV-1 silicone rubber to also withstand extremely high and low temperatures, thus enabling them to be adapted to the most challenging applications
· Hardness 30 Sh A / · Tensile strength 6.5 mPa / · Good primerless adhesion to many substrates, e.g. metals, glass and ceramics / · Elongation 500% / · Industrial adhesives
Heat Cured Rubber (HCR)
Heat Cured Rubber (HCR) is a silicone elastomer formed of straight chains with very high molecular weight. It's also known as High Temperature Vulcanizing silicone rubber (HTV).
Chemical composition and properties of HCR
Subject
Additives
Curing methods
- Made from reactive silicone gums (straight chains)
- Has very high molecular weight macromolecules containing various reactive groups
- The most frequently used gums are either partly phenylated or perfluorinated vinylated gums
- Add fumed or precipitated silicas with high specific surface area to improve mechanical properties
- Can also add heat stabilizers and various other additives such as plasticizers or anti-structuring agents
- Cross-linking occurs using organic peroxides in polycondensation systems, or
- Platinum catalysts in polyaddition systems
Proper temperature
Aging resistance
Color
- From -50°C to + 300°C
- Exceptional mechanical strength
- Photo-oxidative stability
- Chemically stable
- Photo-oxidative stability
- A wealth of colorings are possible
- By using a sufficiently fine silica filler it is even possible to make transparent articles for use in food and paramedical applications
· Hardness 70 Sh A / · Elongation>290% / · Tear strength>18 kNm-1 / · Paramedical application
