It is made up of two or more layers of glue. According to its shape, the method of membrane pressure is divided. According to the requirements, we can make different kinds of rubber and different fabric diaphragms. The properties of the blend of butadiene rubber and polysulfide rubber for diaphragm, the properties of the adhesive used in the canvas disc diaphragm (often called diaphragm), and the characteristics of some silicone rubber, fluororubber and chlorohydrin rubber film developed in recent years are explained as follows.
The working temperature range and pressure range of the diaphragm depend on the glue type, fabric and structure. The diaphragm can work at -50~100 centigrade and 0.4~0.8MPa, and fluorine rubber and silicone rubber diaphragm can work at -80~232 degrees Celsius. The chlorohydrin rubber diaphragm can work under 0.4~0.8MPa pressure. It has good tightness, aging resistance and life expectancy.
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