Rubber tires are called the two legs of a car, and the important role of tires in a car is self-evident. Tires are the rubber products that consume the largest amount of rubber in the rubber industry. Therefore, tires are often separated from rubber products into a special variety in the rubber industry. Among auto accessories, rubber tires are a special accessory.

Automotive rubber products can be divided into seven categories: tires, sealing products, shock-absorbing products, safety products, tape products, hose products and other products such as wipers, fenders, adhesives, sealants and interior products.

tire

Car tires play the role of carrying the car's own weight, the entire weight of the people and goods on the car, and also play the role of making the car move forward, backward, turning and braking. The safety, comfort and driving performance of a car rely heavily on the high performance and high quality of tires.

Rubber tires are 160 years old. As early as 1845, the British R. W. Thomso put a rubber hose on a wooden wheel, thereby reducing the rolling resistance of the wheel and reducing vibration, but this early rubber tire was already very popular at the time. Of course, this should be attributed to the excellent properties of rubber materials. Until 1888, the British J. B. Dunlop invented the pneumatic tire. In the next hundred years, with the development of the automobile industry, rubber tires have experienced several generations of product development, updates and progress. The tire frame materials have evolved from cotton cords, rayon to bias tires with nylon cords. to today’s steel wire radial tires.

Humans invented pneumatic tires, which effectively promoted the development of automobiles. Because pneumatic tires have excellent shock-absorbing performance, they can significantly reduce vibrations, making the car safer to operate and more comfortable to ride. At the same time, it can greatly increase the car's driving speed. With the continuous advancement of rubber materials, formula technology, manufacturing equipment and manufacturing processes, the safety and life durability of automobile tires have been greatly improved. For example, in 1900, the mileage of each tire was only 800km; by 1978, the mileage of each tire had reached 60,000km; in the 21st century, the mileage of each tire has been no less than 140,000km, or even 20 10,000 km. With the rapid construction and putting into use of expressways, the driving speed of automobiles has increased significantly, from dozens of km/h to 100km/h, 140km/h and even 200km/h.

Sealing products

Sealing products are divided into three categories: O-rings, skeleton oil seals and sealing strips. O-rings and skeleton oil seals are installed on engines, gearboxes, car spindles and hydraulic and pneumatic transmission systems to prevent lubricating oil, hydraulic oil and other liquids or gas leaks, ensure the normal operation of each component system, and prevent external sand particles Dust and impurities enter the system and affect the normal operation of the machine. O-ring seals and skeleton oil seals are mainly used for sealing rotating shafts or reciprocating shaft systems. According to the structure, the skeleton oil seal can be divided into internal skeleton oil seal, external skeleton oil seal, semi-exposed skeleton oil seal, sealing lip oil seal, oil seal with auxiliary lip and combined oil seal, etc.; according to the installation position in the car, it can be divided into crankshaft front oil seal and crankshaft rear oil seal. , gearbox oil seal, cam box oil seal, wheel housing oil seal, half shaft oil seal, air pressure guide rod oil seal and shock absorber oil seal, etc. Sealing strips are mainly used in car doors, windows, trunks, engine hoods and other parts to play the roles of sealing, windshielding, rain-blocking, shock absorption and sound insulation. According to the structure, it can be divided into pure rubber sealing strips (which can also be divided into sponge glue and dense glue) and composite sealing strips (divided into rubber/metal skeleton composite strips, two or more rubber composite strips and rubber-plastic composite strips).

Shock absorbing products

Rubber shock-absorbing products are mainly installed in engines, bodies, air conditioners and cabin suspension systems. It is mainly used to reduce vibration and noise when the car is driving, and improve the stability, safety and comfort of car control. With the continuous improvement of the comprehensive performance of modern automobiles, higher and higher requirements are placed on the performance and quality of rubber shock-absorbing products. The main requirements are that shock-absorbing products must have excellent shock-absorbing damping performance, dynamic fatigue resistance and ultra-long life durability. Automotive rubber shock-absorbing products mainly include air springs, front and rear engine suspension pads, flexible couplings, and rubber bushings and liners of various shapes. High-end cars also have special shock absorbers with high performance installed in each tire support.

safety products

Rubber safety products for automobiles play a role in braking reliability, driving safety and personal safety in automobiles. Safety products mainly include brake films (diaphragms), leather cups, brake pads, airbags and bumpers, etc.

The brake film and cup are directly related to the safety of the car. When the car encounters an accident while driving, it can quickly decelerate the car or even stop it, ensuring the safety of the vehicle and personnel. Airbags are rubber products that provide safety protection for vehicle occupants when a vehicle is hit in an accident. The bumper is used to reduce the impact force when a car collides.

Hose products

Hose products are used in the three major parts of the chassis, engine and car body. They are used in seven systems of oil, gas, drive, control, braking, cooling and heating. They play the role of supplying oil, gas, water and transmitting power. The types of hoses include fuel hoses, water delivery hoses, brake hoses, vacuum hoses, air conditioning hoses, radiator hoses, power steering hoses and special-shaped branch hoses.

Tape products

Tape products are mainly used in automobiles to transmit torque, power and speed, and to transmit power from the power source engine to the place where power is needed. Installed in systems such as cooling fans, cooling water pumps, brake compressors, booster pumps, air conditioning systems and steering devices. Tape products are divided into V-belts (also divided into ordinary V-belts and poly-ribbed belts) and synchronous belts (toothed belts). V-belts are divided into two types according to their structure: cutting belts and cloth-wrapped belts. The characteristics of V-belt are high speed and large transmission power. Synchronous toothed belts are used for gas distribution and ignition in automobile engines. The conditions for their use are high speed, large transmission power and high temperature.

Other products

Such rubber products include automotive rubber sheets (vehicle interior rubber sheets and fenders), automotive interior trim, adhesives, sealants, wiper strips, etc. Floor glue is used to lay the floor inside the car to prevent shock and slip. Wiper strips are used to wipe off rain and snow on the windshield in rainy and snowy weather to ensure the driver's vision, normal operation and normal driving of the vehicle. Adhesives are used for bonding automobile interior materials and protecting the bottom of automobiles.