Wuhu plans 18 silica gels. Among the raw materials used to manufacture sealing strip
s, EPDM rubber, the main raw material used in the past, is also constantly updated and developed. It has excellent physical properties and a new type of EPDM with good processing properties that can control the medium length of the molecule. Chain branching makes the vulcanization performance better, and can increase the extrusion speed and product output. These materials not only have the excellent engineering properties of elastomers, but also have the excellent characteristics of plastics, which are convenient for processing and can be recycled and reused. These materials are gradually replacing EPDM products. 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. Wuhu plans to plan 18 'specialized' silicone rubber seals from Germany. They have been popular in the European market for a long time. They are famous for their environmentally friendly sealing performance. In pursuit of greater output, (saving a little electricity) using talcum powder, heavy calcium and the like as fillers, greatly increasing the proportion of sealing strip products (our users generally buy by kilograms and use them by length) This virtually increases the cost and seriously reduces the quality. Don't try. Talking about the important role of epdm for doors and windows. With the further development of science and technology and the continuous improvement of living standards, and the call of an energy-saving harmonious society that has been advocated, we all know that doors and windows are the eyes of the building, and its energy loss can be It accounts for 40% of the total energy loss of buildings, which has attracted enough attention, especially in large cities like the capital Beijing. In 2004, the heat transfer coefficient of doors and windows (indices for heat preservation and energy saving) was used as a mandatory acceptance index. Provinces, cities and regions across the country have also attracted great attention and implementation, and energy-saving doors and windows have become the mainstream of building doors and windows. At a high temperature of 120℃, the weather resistance of the sealing strip is still good, maintaining elastic properties, and its shape and function are not affected. Thermoplastic EPDM rubber sealing strips are often used in many luxury cars. Type of EPDM sealing strip, what kind of performance does it have in actual use? First of all, it is more flexible, which is very important. Only when this point is reached, can you maintain good performance when you use it, and at the same time, it will not be achieved in long-term use. Deformed. 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 advantages of 18 pieces of silica gel planned by Wuhu are irreplaceable by other materials such as PVC. It can meet the design requirements for products with different shapes, different materials, or cold resistance, heat resistance, foaming, solid body, and special performance requirements. And the needs of use, the production process of automobile sealing strips 1. Extrusion of rubber sealing strips for automobiles is extruded by a cold feed extruder. The extruder head has a single head, a composite (double composite and multiple composite) head and shears. Cutting head, among them, the screw length-to-diameter ratio of the microwave vulcanization extruder is generally 16, and the screw length-to-diameter ratio of the shearing head vulcanization extruder is greater than 20. Second, after the sealing strip is damaged, it is easy for rainwater to enter the car. This phenomenon will cause damage to the car body, and it is easy to cause the car body to rust. From this point, we can see that the sealing strip is like this. Although the product is a small object, it is also an indispensable part for the car. When the car sealing strip is intact, it can effectively reduce the wind noise caused by high-speed driving, and it also improves the car’s air. Tightness and dust-proof effect, it can be seen that regular maintenance of the sealing strip is very important. Among them, classification according to the title of the device part (component) is a common way, which includes the engine room sealing strip, the front and rear wind window sealing strip, the door frame sealing strip, the door sealing strip, the door glass guide groove sealing strip, the lower door dust strip, Internal and external sealing strips for door and window sills, side window sealing strips, sunroof sealing strips, roof cover sealing strips, trunk (luggage box) sealing strips, etc., installation method: self-contained double-sided tape, just stick it directly (the sticking surface must be smooth, Clean, smooth and dry). 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.
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