ABS plastics refers to the graft copolymers of polybutadiene rubber and monomers styrene and acrylonitrile, in which A stands for acrylonitrile, B stands for butadiene, S stands for styrene. To meet the different fields of different performance of ABS plastics It is required that people adjust the variety of ABS plastics by adjusting factors such as polymerization method, process conditions, monomer ratio, and structural parameters of rubber.
ABS plastics can be classified into ultra high impact type, high impact type, medium impact type, etc. according to their impact strength, and can be classified into injection, extrusion, calendering, vacuum, blow molding and other grades according to their forming and processing methods. Performance characteristics can be further subdivided into general, heat-resistant, electroplating, flame-retardant, transparent, extruded board, pipe and other 10 varieties, of which the general-purpose injection-grade ABS plastic has the largest market capacity.
Automobile dashboards are important functional parts and decorative parts on automobiles. If they are made of steel plates, they are not only costly, but also require more than 10 processes such as cutting, stamping, drilling, and painting, and they are made of ABS plastic. Just one injection or blow molding process.
1, Low odor ABS plastic
Automotive interiors pursue low VOC performance of materials and improve the air quality inside the car. Small organic volatiles in plastics can easily migrate to the surface of plastic products and evaporate into the air in the vehicle, causing physical injuries to occupants.
By selecting suitable substrate, suitable modification method and processing technology, ABS material that meets the requirements of automobile manufacturers can be obtained.
The low-odor ABS material is mainly used for the production of door panels, instrument panel trims, glove boxes, central control instrument panels, air-conditioning outlets and other interior components, especially air-conditioning outlets that need to withstand higher temperatures and conduct air.
2, Heat resistant ABS
For some parts that need to withstand higher temperatures, the heat resistance of ABS needs to be improved. A common way to increase the heat resistance of ABS is to blend ABS and PC into ABS/PC alloys. Heat-resistant ABS is often used in manufacturing. Air-conditioning outlets, heat-resistant grilles, and other heat-resistant parts. For the heat-dissipating grille, heat resistance is improved to prevent deformation of the parts, thereby preventing the plating layer from falling off due to deformation. It is also manufactured by ABS or ASA. Door panels due to area Large, need impact resistance and other factors, also use PC/ABS alloy. The fender of high-end car is also made of ABS/PC alloy.
3, Extinction ABS
Strong light reflections in the driver's cab can cause driver discomfort and fatigue, and affect the driver's vision at night. Therefore, extinction ABS has a wide range of applications in automotive cab components. As ABS is a high-quality finish engineering plastics, Therefore, in the modification process, the resin grades with low relative smoothness and wide molecular weight distribution are selected, and the fillers with large particle size or needle shape are selected. This can improve the surface roughness of the products, thereby scattering light and achieve the matting effect.
4, Plating grade ABS
Although the ABS aesthetic effect is better, but in order to pursue a better aesthetic effect, often need to ABS plating, painting and other surface decoration treatment.
Plating grade ABS is modified by adding a certain amount of rubber to improve the polarity of the material. Plating grade ABS is mainly used on heat dissipation grilles, decorative parts and other components. Weather resistant ABS is easy to be exposed to sunlight and hot oxygen because it contains double bonds. Degradation and powdering, discoloration and loss of part of the mechanical properties. Therefore, the use of exterior ABS generally use weather-resistant ABS.
One of the difficulties in automobile plasticization is the plasticization of the body panels. Body panels include front and rear fenders, bulkheads, and panels. The materials used are the largest, and the materials are required to have impact resistance, heat resistance and rigidity. ABS Resins and engineering plastics alloys have these properties and can be used as body exterior materials. Automotive interior components play an important role in the comfort and safety of automobiles. Modern automotive interior panels are mostly integrally formed and have a luxurious appearance. They are generally used. ABS resin.