Addition and Platinum Cure Silicones

Addition and platinum cure silicones are types of silicone rubber that are used for various applications, including mold making, casting, and prototyping.
Addition Cure Silicone: Addition cure silicone, also known as platinum cure silicone, is a type of silicone rubber that cures through an addition reaction. It involves the reaction of a hydride- and a vinyl-functional siloxane polymer in the presence of a platinum complex catalyst. Addition cure silicone is often used for creating molds and casting flexible, high-strength rubber parts. It offers excellent release properties, has a long library life, and exhibits low shrinkage on cure.
Platinum Cure Silicone: Platinum cure silicone is another term used to describe addition cure silicone. It refers to the fact that platinum is the catalyst used in the curing process. Platinum cure silicone is known for its flexibility, high tear strength, and stretchiness. It is commonly used for creating molds, casting compounds, and special effects applications.
Compared to our tin-cured silicone rubbers (rtv65,rtv115, rtv120, rtv128, T25), platinum-cured silicones have several advantages. They do not produce byproducts during curing, have a longer library life, and are less prone to shrinkage. In summary, addition cure silicone and platinum cure silicone are terms used interchangeably to describe silicone rubber that cures through an addition reaction using a platinum catalyst. These types of silicones are widely used for mold making, casting, and other applications that require flexible and high-strength rubber materials.