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Higher operating temperature of silicone strips

by:Kenna     2021-05-24
The higher use temperature of silicone strips, according to the classification of materials, the rubber materials of automobile sealing strips are compact rubber, sponge rubber and hard rubber. The hardness of hard rubber can reach Shore A95. EPDM can be combined with steel belts and steel wire braided belts. , TPE, flannel, flocking, PU coating, organic silicon coating, etc., to ensure the waterproof, dustproof, sound insulation, heat insulation, vibration reduction, wear resistance and decoration effects of the car interior and the outside world and itself, and can also choose to have Chloroprene rubber (CR) with good ozone resistance and good 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. The higher use temperature of silicone strips is classified according to the material. The rubber materials of automobile sealing strips are compact rubber, sponge rubber and hard rubber. The hardness of hard rubber can reach Shao A95. EPDM can be combined with steel tape, steel wire braid, TPE, flannel, flocking, PU coating, organic silicon coating, etc., to ensure the waterproof, dustproof, sound insulation, heat insulation, vibration reduction, wear resistance and decoration effects of the car interior and the outside world and itself, and can also choose to have good Chloroprene rubber (CR) with ozone resistance and good aging resistance. The surface of the silicone rubber sealing strip is very flat. When observing its surface, we will also find that its surface has a very uniform foaming density and good resilience performance. The choice of sealing material determines In order to have long-term softness and elasticity, through formula adjustment, the softness of the sealant after drying can be improved to form a good sealing layer between the sheet metal and the rubber strip. The unique high elasticity of butyl rubber ensures the sealing The glue is easy to peel from the metal sheet without contaminating the sheet metal. Doors and windows bring light and vitality to the room. Doors and windows extend the limited space infinitely. Said ternary bc sealing strip (rubber EPDM)-suitable for special environments at -40°C-+160°C, and has superior ozone resistance Characteristics and anti-purple light characteristics and chemical solvent resistance characteristics, far beyond similar products, widely used in vehicle seals and building seals, in addition to various physical and chemical performance indicators in the field, our company has developed and designed hardy and heat for different fields of use. It also delivers foam and solids, with special properties that can meet the needs of the application. 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. The characteristics of higher use temperature of silicone strips for automobile sealing strips In the -40℃ low temperature resistance test, the sealing strips do not become hard or brittle, and still maintain softness and good adhesion of the strips, showing excellent cold resistance. Automotive sealing strips are mainly made of EPDM rubber foam with good elasticity and resistance to compression deformation, aging resistance, ozone, chemical effects, and a wide temperature range (-40℃~+120℃). It is made of dense compound, and contains unique metal clamps and tongue-shaped buckles, which is durable and easy to install. Under normal circumstances, EPDM sealing strips can be used stably for more than ten years. With the continuous development and maturity of thermoplastic elastomer (TPE) technology, the application areas continue to expand. According to the classification of vulcanization (1) Discontinuous vulcanization (the extruded rubber strip is After a certain length is cut, put it in a vulcanizing tank, and put the extruded semi-finished rubber strip into the model to vulcanize); (2) Continuous vulcanization method (microwave continuous vulcanization method, salt bath continuous vulcanization method, hot air continuous vulcanization method, etc.) Several methods). The characteristics of automobile sealing strips In the -40℃ low temperature resistance test, the sealing strips do not become hard and brittle, and still maintain softness and good adhesion of the strips, showing excellent cold resistance. The automotive sealing strips are mainly composed of Ethylene propylene diene rubber (EPDM) rubber with good elasticity and resistance to compression deformation, aging resistance, ozone, chemical effects, and a wide temperature range (-40℃~+120℃) is formed by foaming and dense compounding of ethylene propylene diene monomer rubber (EPDM). Contains unique metal clamps and tongue buckles, which are durable and easy to install. 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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