Although ABS plastic has many excellent properties, in some applications, there are still some shortcomings, such as insufficient strength and heat distortion temperature, because of its double bond in the molecular structure, the weather resistance is poor; Sex, so in order to meet the needs of a variety of different functions, ABS plastics can be modified to meet different market requirements.
ABS plastics can be divided into ultra-high impact type, high impact type, medium impact type, etc. according to their impact strength. According to their molding processing methods, they can be divided into injection, extrusion, calendering, vacuum, blow molding and other grades, depending on their use and The performance characteristics can be further subdivided into general-purpose, heat-resistant, electroplating, flame retardant, transparent and other varieties. Based on years of experience, Zhongxin Huamei Company analyzes the main grades of ABS plastics as follows:
1. Low odor ABS
Low odor ABS is mainly used in automotive interior materials with low VOC performance to improve the air quality inside the car. Low-odor ABS materials are mainly used for the production of door panels, instrument panel trims, glove boxes, central control panels, air conditioning vents and other interior components, especially air conditioning vents 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. One common method for improving the heat resistance of ABS is to blend ABS with PC to form an ABS/PC alloy. Heat-resistant ABS is commonly used to manufacture heat-resistant components such as air conditioning vents and heat-radiating grilles. For the heat-dissipating grille, heat resistance can be prevented, and the deformation of the component can be prevented, thereby preventing the plating layer from falling off due to deformation. It is also manufactured by ABS or ASA. The door panel is also made of PC/ABS alloy due to its large area and the need for impact resistance. The fenders of high-end cars are also made of ABS/PC alloy.
3. Extinction ABS
Strong light reflections in the car's cab can cause discomfort and fatigue to the driver and affect the driver's vision during the night. Therefore, extinction ABS has a wide range of applications in automotive cab components. Since ABS is a high-gloss engineering plastic, we chose a resin grade with a low relative gloss and a wide molecular weight distribution during the modification process. A flake or needle-shaped filler with a large particle size is used. This can improve the surface roughness of the product, so that the light is scattered to achieve the matting effect.
4. Glass fiber reinforced ABS:
ABS plastic can be made of reinforced ABS material by means of glass fiber reinforced or mineral filling. Glass fiber reinforced method is generally used, usually glass fiber content is 20%-40%; glass fiber reinforced ABS tensile strength, bending strength, The flexural modulus of elasticity and the like are greatly improved; at the same time, the heat distortion temperature is also significantly improved, the coefficient of linear expansion is significantly reduced, and the dimensional stability and accuracy of the product should be greatly improved; the impact strength of the glass fiber reinforced ABS generally follows the glass. The fiber content is reduced and reduced.
5. PC/ABS alloy:
PC/ABS alloy combines the advantages of both, making PC/ABS material have good mechanical strength, toughness and flame retardancy. PC in PC/ABS alloy contributes to heat resistance, toughness, impact strength and strength. Sex, ABS advantages are good processability, apparent quality and low density; PC/ABS alloy is widely used in high-end consumer electronics (mobile phones, notebook computers, headphones, etc.), automotive industry, televisions, office automation equipment enclosures and telephones. Wait.
