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Telecommunication Applications Of Silicone Rubber Products
Silicone rubber products has excellent characteristics in insulation, fatigue strength, and hot or cold weather resistance. Hence, it is rapidly developed in the industry of telecommunication, especially in the production of keypads and contact mats. In the early stage, the keypads were the combination of plastic material and metal dome plates. The result of such design had many shortcomings (such as extra press force required uncomfortable sense of touch) and was inconvenient to use, not to mention its short life-span. Later the keyboards had improved from manual to automatic. Although is it more convenient to use, the design and production were too complicated and expensive. Eventually, silicone rubber keypads have overcame most difficulties and solved the major problem of prime cost and life-span. Silicone rubber products was produce in such structure of placing the silicone rubber products conductive keypad on top of the PC board, and then the message will pass through the bottom part of rubber carbon pills when it is in contact with the PC board. As a result, it has become an indispensable component of telecommunication industry nowadays.
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