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How to make silicone rubber strips

by:Kenna     2021-05-07
How do silicone rubber strips come out? Among them, metal rubber composite sealing strips account for more than 60%. For rubber sealing strips, the cross-sectional design is very important. The first is the shape and size of the sealing lip. The sealing lips on both sides should be the same, Appropriate force touches the glass from both sides of the window glass. 3) It has an independent open-cell bubble structure. The appearance of the special-made joint board is a honeycomb-shaped hole evenly distributed, and it can be tightly bonded to cement/sealant without beating As a whole, it adapts to changes in natural expansion and contraction, and enhances the effect of joint sealing, expansion and water stop. 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 silicone rubber strip is used to maintain the door, window glass, front and rear windows, triangular windows and other parts of the car body. Its better maintenance ensures safe and comfortable driving. However, few car owners pay attention to its maintenance, but in fact Its maintenance is very important, because once it is aging and damaged, it will cause rain leakage in the cabin, increase the driving wind noise of the car, and rain leakage can easily cause the body to rust. We can keep the car sheltered from wind and rain by maintaining it. Dustproof, heat and sound insulation effects, and when the body is shaken and distorted, it also plays a role in buffering, absorbing shock, and retaining glass. It also plays a decorative role on the edges of the door and window junctions, so the owner must always treat it. Carry out maintenance. Among the raw materials for sealing strips, EPDM, the main raw material used in the past, is also constantly updated and developed. The new EPDM with excellent physical properties and good processing properties can control the long-chain branching in the molecule and make it The vulcanization performance is better, and the extrusion speed and the output of the product can be improved. These materials have the excellent engineering properties of elastomers and the excellent characteristics of plastics, which are convenient for processing and can be recycled and reused. These materials are gradually replacing EPDM. Products. With the improvement of people's living standards, the improvement of housing conditions and people's high attention to home decoration, more and more people pay attention to the privacy, sound insulation and sealing effect of indoor rooms, 035W/m2K; 5. Fatigue resistance test: imitation The window has been opened and closed 500,000 times without significant changes in shape. 6. Sound insulation test: only IV68 windows with intermediate rubber strips, reducing noise by 43 decibels7, IV76 windows with intermediate rubber strips and additional rubber strips, reducing noise by 45 decibels8, Outdoor aging resistance test: It has been more than 20 years, and the performance is maintained intact. The series of products are environmentally friendly products and do not contain CFC harmful substances. 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. Silicone rubber strips can be divided into solid core products (round, square, flat cross-sectional shapes), hollow products and metal rubber composite products according to the cross-sectional shape. Among them, the metal rubber composite sealing strip accounts for more than 60%. The cross-section design of the rubber sealing strip is very important. The first is the shape and size of the sealing lip. The sealing lips on both sides should contact the glass from both sides of the car window glass with the same and appropriate force. They are classified according to the sealing characteristics. It can be divided into weather sealing strip (WEATHERSTRIP) and general sealing strip (SEALING). At a high temperature of 120°C, the weather resistance of the sealing strip is still good, and the elasticity is maintained. The shape and function are not affected. The low temperature elasticity, the temperature when the tensile capacity reaches 100MPa is -58, and the characteristics of the neoprene sealing strip: Compared with other special rubbers, the individual performance is worse, but the overall performance balance is good, with excellent weather resistance, ozone resistance, heat aging resistance, oil and solvent resistance, good chemical resistance and excellent flame resistance.
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