HTV Silicone Rubber vs RTV Silicone Rubber
Silicone rubber can be classified based on the method of vulcanization.
Based on the vulcanization method, it can be divided into:
1. High-Temperature Vulcanized (HTV) Silicone Rubber:
HTV silicone rubber is a high molecular weight semi-solid rubber that undergoes molding and vulcanization processes similar to conventional rubber.
The raw material is in an unformed gel-like state, similar to putty. To shape the silicone rubber material, it must be subjected to a high temperature of around 160°C. Achieving precise structure and dimensions requires molding the material inside a mold. Therefore, HTV is also known as compression molding silicone rubber. Typical products made from HTV silicone rubber include silicone keypads, silicone seals, silicone sleeves, and more.
2. Room Temperature Vulcanized (RTV) Silicone Rubber:
RTV silicone rubber is a low molecular weight liquid rubber that can vulcanize and solidify at room temperature.
It is usually in a liquid state and starts to cure and solidify upon contact with air. The entire curing process can be carried out at room temperature without the need for additional high temperatures or the use of molds. Typical products made from RTV silicone rubber include flexible adhesives, silicone adhesives, thermal conductive adhesives, potting compounds, and more.