Automotive sealing strip maintenance do not ignore the correct maintenance methods
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Automotive sealing rubber strip is one of the important parts of the car, widely used in doors, Windows, body, seats, sunroof, engine case and trunk and other parts, can be produced for the installation of passenger luggage compartment door rubber hinges, but also has other waterproof, sealing and other functions.
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Classification of automotive sealing strips: <br />
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1, vulcanized rubber, < a href = "
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It is generally made of EPDM material. Excellent overall performance, with outstanding ozone resistance, excellent weather resistance, good high and low temperature resistance, outstanding chemical resistance, resistance to a variety of polar solutes, relatively small density. The disadvantage is that the expansion of general mineral oil and lubricating oil is large, and it is generally dark products. Operating temperature range -60 ~ 150℃. With its wide range of application and excellent comprehensive performance, it has been recognized by domestic and foreign industry enterprises. <br />
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2, silicon rubber < a href = "
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It has outstanding high and low temperature resistance, ozone resistance and weather resistance. Excellent hydrophobicity and proper permeability; With unmatched insulation properties; It can meet the hygiene level of food hygiene requirements and meet the requirements of various colors. The disadvantage is that the mechanical strength is the worst in the rubber material, and it is not resistant to oil. Operating temperature range -100 ~ 300℃. It can be applied to high temperature, cold, ultraviolet irradiation and middle and high-rise buildings. <br />
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3, neoprene < a href = "
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Compared with other special rubber, the individual performance is poor, but the overall performance is well balanced. It has excellent weather resistance, ozone resistance, heat aging resistance and oil and solvent resistance, good chemical resistance and excellent fire resistance, and good adhesion. Poor storage stability, hardening will occur during storage, cold resistance is not good. Relatively high density. It is usually made of black products. It is used in the environment with oil resistance, heat resistance, acid and alkali resistance. Operating temperature range -30 ~ 120℃. <br />
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4, NBR < a href = "
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The main feature is oil resistance, solvent resistance, but not resistant to ketone, ester and chlorinated hydrocarbons and other media, elastic and mechanical properties are very good. The disadvantage is that it is easy to age and crack in ozone and oxidation, and its cold resistance and low temperature resistance are poor. <br />
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5, thermoplastic elastomer sealing rubber strip <br />
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It has good elasticity and excellent abrasion resistance, good oil resistance, wide adjustable range of hardness (Shore A hardness 65 ~ 80 degrees), superior mechanical properties (tensile strength, elongation at break), excellent cold resistance and chemical interwoven corrosion resistance, and high prices of raw materials. Recyclable materials. Operating temperature range -60 ~ 80℃. It is suitable for earthquake-prone areas, areas with strong vibration such as near railways or factories with high-power cranes, and areas with strong ultraviolet irradiation. <br />
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6, thermoplastic vulcanization rubber (TPV) sealing strip <br />
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With the flexibility and elasticity of rubber, it can be produced by plastic processing methods, without vulcanization, and the waste can be recycled and reused. It is a material with a wide range of performance, good heat resistance and cold resistance, small relative density, oil resistance and solvent resistance similar to neoprene rubber, and resistance to compression permanent deformation and wear resistance is not good. Operating temperature range -40 ~ 150℃. Suitable for cold, as well as mid - and high-rise buildings. <br />
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7, Plasticized polyvinyl chloride (PPVC) sealing strip <br />
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The material is cheap and easy to obtain, with corrosion resistance, wear resistance, acid and alkali resistance and various chemical media, combustion resistance, high mechanical strength; The disadvantage is that the plasticizer in the system is easy to migrate, becomes hard and brittle with the extension of time, loses elasticity, is not resistant to aging, poor weather resistance and low temperature performance. Generally dark products. It is suitable for occasions where the light is not strong, the temperature changes little and the climate conditions are not bad. <br />
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8, surface coating material <br />
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The surface of the seal is coated with polyurethane, organic silicon, polytetrafluoroethylene and other substances to replace the traditional process of surface flocking. The coated sealing strip has good wear resistance and smoothness, especially the sealing strip coated with silicone rubber coating, and the surface friction coefficient is small, which is conducive to the sliding of door and window fans. Suitable for doors and Windows with sliding doors and sashes. It is an alternative to the traditional silicon top.
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