Mobile phone waterproofing has become a standard feature of modern mobile phone design. Most new mobile phones can meet IP67 or even IP68 waterproof and dustproof ratings, and can survive being immersed in 1.5 meters of water for 30 minutes without any damage. All this is due to a very critical material - room temperature vulcanized silicone rubber (RTV).

RTV plays an important role inside the mobile phone. It seals the gaps between the battery, screen and casing, blocking the intrusion of water and dust. Such excellent sealing ability is inseparable from the great help of ☞methyltrimethoxysilane (IOTA 20).


The structure of methyltrimethoxysilane contains three methoxy functional groups that can be cross-linked with silicone rubber molecules. After cross-linking, a stable three-dimensional network structure can be formed. This unique cross-linked structure not only gives RTV excellent mechanical properties, but also enables it to be firmly combined with various materials such as metal, glass, ceramics, etc., while maintaining good electrical insulation to ensure the safe operation of electronic equipment. It can be seen in many electronic devices such as smartphones and smart watches, and it serves as the protector of many smart devices.

In addition, IOTA 20 is also used in coatings, silicone resin, silicone oil, aerogel and other industries.