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Basic knowledge of conductive silicone rubber

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Silicone rubber is an excellent insulating material, but with the development of society, people not only require materials to have their own inherent properties, but also hope to retain this trait while adding other properties that meet the requirements. This makes conductive silicone rubber came into being, it is a very active branch of conductive polymer materials, conductive silicone rubber not only retains its rubber matrix material plasticity, easy processing, high resilience and other characteristics, but also through the addition of different types of conductive filler, the addition of different amounts can make him obtain different conductive properties. So that conductive silicone rubber can be used in aerospace, electronic computers, electronic shielding and many other fields.
Classification of conductive silicone rubber:
  According to the different vulcanization methods, conductive silicone rubber can be roughly divided into hot vulcanized silicone rubber, room temperature vulcanized silicone rubber and liquid silicone rubber three categories.
  Conductive silicone rubber can be divided into four categories according to its conductive characteristics: semiconductor conductive silicone rubber, antistatic conductive silicone rubber, conductive conductive silicone rubber and high conductive conductive silicone rubber.
Preparation of conductive silicone rubber
   The preparation of conductive silicone rubber includes mechanical mixing method, solution mixing method or melt blending method, etc., the rubber matrix and the conductive filler are fully mixed together, so that the conductive filler is evenly filled in the rubber matrix, forming a stable conductive network to form a current. It is necessary to ensure that conductive silicone rubber has the elastomer characteristics of rubber and has conductive properties.
   The main components of conductive silicone rubber are rubber matrix, conductive filler, vulcanizing agent and other materials. As a key material to determine the excellent and good conductivity of conductive silicone rubber, the selection of conductive filler is particularly critical. Conductive fillers mainly include carbon series and metal series. Carbon series conductive fillers are the most widely used conductive fillers at present, and there are many kinds, mainly including carbon fiber, carbon black, graphite, graphene and carbon nanotubes. Carbon series conductive filler has good conductivity, relatively large surface area, light texture, the prepared conductive silicone rubber has a certain reinforcing effect. It plays an important role in conductive silicone rubber. Metal conductive fillers are relatively simple, are metal powders, metal oxides, metal fibers and other materials. The commonly used metal fillers are silver, copper, aluminum and so on. The color of metallic conductive fillers is much richer than that of all-black carbon conductive fillers.
Application of conductive silicone rubber
Conductive silicone rubber has many applications, and common applications include:
Conductive silicone rubber seal ring, conductive silicone rubber O-ring, conductive silicone rubber rectangular ring, conductive silicone rubber seal, conductive silicone rubber U-ring, conductive silicone rubber V-ring, conductive silicone rubber Y-ring, etc

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