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There is a black strip on the silicone. What kind of coating can it be whitened

by:Kenna     2021-07-20
There is a black strip on the top of the silica gel, which can be painted white. The sealing strips are made of rubber, paper, metal, plastic and other materials. The low-end products use waste materials, substitute plasticizers and high filling levels, so that they can be glued. The strips are poor in elasticity, easy to become hard, have a nasty smell, easy to migrate, make the frame material yellow, and have a short service life. Features 1. EPDM has excellent weather resistance and weather resistance refers to long-term resistance to severe cold, heat, dryness, Moisture capacity, excellent corrosion resistance to rain and snow erosion, can fully extend the service life of the rubber strip; 2. Heat aging resistance refers to strong heat-resistant air aging resistance. Automobile product rubber formula and its preparation method and process Background technology: At present, the low temperature performance of rubber products used in automobiles on the market is generally around -25°C, but the rubber parts on automobiles cannot withstand cold air in a harsh climate. The airflow caused the product life to be greatly reduced. The performance of rubber products used in automobiles directly affects personal safety. For example, the recall of some of the cars sold by Toyota in the past few years caused serious reputational consequences. Therefore, all automobile manufacturers need a long-term stable performance. Adequately safe rubber products. If a piece of silica gel is black, it can be painted white at 8°C. Disadvantage: Generally, it has a large expansion in mineral oil and lubricating oil, and is generally a dark product. Scope of application: Use temperature range -60-150 High temperature and cold coastal areas with strong ultraviolet radiation and medium and high-rise buildings are recognized by the domestic door and window industry for their excellent comprehensive performance. Disadvantages: poor storage stability, hardening during storage, poor cold resistance, and relatively high density Large, generally black products. Second, high heat insulation. In the process of use, it has good heat insulation, which greatly reduces the thermal conductivity. Therefore, the heat insulation of this product is very good, which can effectively prevent the loss of temperature. , Third, the automobile industry The demand for rubber sealing strips in the automobile industry is very large. Some electronic parts and electrical assembly parts are required to be used, such as the sealing of windshields and automobile windows, as well as the outer skin of high-voltage lines. There are many places such as spark plug protection covers. The 'specialized' covered sealing strip originated from Germany and has been popular in the European market for a long time. It is famous for its environmentally friendly sealing performance. PVC sealing strip vendors have made great efforts in using fillers. Some manufacturers are pursuing greater output. , (Saving a little electricity) Use talc, heavy calcium and the like as fillers, which greatly increases the specific gravity of the sealing strip products (our users generally buy by kilograms and use them by length). The cost has been severely reduced and the quality has to be tried. Technical realization factors: The technical problem to be solved by the present invention is to provide a rubber formula for automobile products and a preparation method thereof, which has good low-temperature performance, can withstand the attack of cold air in a local environment with relatively bad weather, and guarantees good performance. Ensure personal safety. Technical realization factors: The technical problem to be solved by the present invention is to provide a rubber formula for automobile products and a preparation method thereof, which has good low-temperature performance, can withstand the attack of cold air in a local environment with relatively bad weather, and guarantees good performance. Ensure personal safety. There is a black strip on the silica gel. What can be painted white? According to the material classification, the rubber materials of automobile sealing strips are dense rubber, sponge rubber and hard rubber. The hardness of hard rubber can reach Shore A95. EPDM can be combined with steel belt, Steel wire braid, TPE, flannel, flocking, PU coating, silicone coating, etc., to ensure the waterproof, dustproof, sound insulation, heat insulation, vibration reduction, wear resistance and decoration effects of the car room and the outside world and itself. Chloroprene rubber (CR) with good ozone resistance and good aging resistance can be selected. All of the above characteristics are also the advantages of foam sealing strips. Through understanding, we can find that the reason why this product is popular in the market is because the product has many characteristics and advantages. The temperature in winter is very low. If a product such as a car seal is damaged, it is easy for air-conditioning to enter the car, and wind noise is also prone to appear. This sound feels like the door is not closed tightly, which will affect the comfort of the ride. . Second, high heat insulation. In the process of use, it has good heat insulation, which greatly reduces the thermal conductivity. Therefore, the heat insulation of this product is very good, which can effectively prevent the loss of temperature. , Third, the automobile industry The demand for rubber sealing strips in the automobile industry is very large. Some electronic parts and electrical assembly parts are required to be used, such as the sealing of windshields and automobile windows, as well as the outer skin of high-voltage lines. There are many places such as spark plug protection covers. Technical features: 1. An automobile product rubber, characterized in that the automobile product rubber is composed of EPDM, carbon black, softening oil, processing aids, and accelerators. 2. The automobile product rubber of claim 1, wherein the automobile product rubber is based on a weight ratio of 100 for EPDM, 90 for carbon black, 20 for softening oil, and 15 for processing aids. , The accelerator is 5.
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