Just now we talked about its main characteristics. Today, let's take a look at the processing process of ABS plastics
　　Molding process
　　Plastic ABS can also be said to be the modification of polystyrene, which has higher impact strength and better mechanical strength than hips, and has good processing performance. It can be used for injection molding, extrusion, blow molding, calendering, laminating, foaming, thermoforming, welding, coating, electroplating and mechanical processing. ABS has high water absorption and needs to be dried before processing at 70-85 ℃ for 2-6h. ABS products are easy to produce internal stress during processing. If the stress is too large, resulting in cracking of products, annealing treatment should be carried out. Put the parts in the hot air circulation drying box at 70-80 ℃ for 2-4h, and then cool to room temperature.
　　Extrusion process
　　squeeze. Plastic ABS produces pipes, plates, sheets, profiles and other products. The pipes can be used for various water pipes, gas pipes, lubricating oil and fuel oil delivery pipes; plates and sheets can be used for floor, furniture, tank, filter, wall partition and hot forming or vacuum forming. The screw length diameter ratio of extruder is usually relatively high, L / D is between 18-22, compression ratio is (2.5-3.0): 1, it is suitable to use gradual change type torpedoes, barrel temperature is 150-160 ℃, barrel front 180-190 ℃, die head temperature 185-195 ℃, die temperature 180-200 ℃, and blow molding temperature can be controlled between 140-180 ℃.
　　Injection molding process
　　ABS resin is a terpolymer developed on the basis of polystyrene resin modification. A represents acrylonitrile, B represents butadiene and s represents styrene. ABS resin has the comprehensive properties of three components, a can improve oil resistance and chemical corrosion resistance, so as to have a certain surface hardness; B makes ABS present rubber like toughness and improves impact toughness; s makes ABS plastic present better fluidity, which makes it have good performance of thermoplastic molding.