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News & Resources

Adhesion and Silicone Adhesives

Most silicone adhesives are made of silica-filled silicone polymers that cure in place by crosslinking. The overall mechanical strength is known as cohesive strength. The strongest bonds are those which occur between atoms from chemical bonding; however, adhesion is not limited to chemical bonding. Conversely, materials can have the ability to form a strong “bond” when brought into contact with another surface for a short time (seconds) under light pressure. This short-term, pressure-induced attachment is known as tack2. Tack and adhesion are influenced by how a force (and how much of it) is applied to the bond, as well as the bond thickness (thinner can be better)1.