xinglin injection molding
① Typical application range:
Automobiles (instrument panels, tool hatches, wheel covers, reflector boxes, etc.), refrigerators, high-strength tools (hair dryers, blenders, food processors, lawn mowers, etc.), telephone casings, typewriter keyboards, recreational vehicles such as golf carts and jet sledges.
② Injection mold process conditions:
Drying treatment: ABS material is hygroscopic and requires drying treatment before processing. The recommended drying condition is 80 to 90 ° C for at least 2 hours. Material moisture should be less than 0.1%.
Melting temperature: 210 ~ 280℃; Recommended temperature: 245 ° C.
Mold temperature: 25 ~ 70℃. (Mold temperature will affect the finish of plastic parts, low temperature will lead to low finish).
Injection pressure: 500 ~ 1000bar.
Injection speed: medium to high speed.
③ Chemical and physical properties:
ABS is composed of three chemical monomers: acrylonitrile, butadiene and styrene. Each monomer has different characteristics: acrylonitrile has high strength, thermal stability and chemical stability; Butadiene has the properties of toughness and impact resistance. Styrene has easy processing, high finish and high strength. In terms of morphology, ABS is a non-crystalline material. The polymerization of the three monomers produces a terpolymer with two phases, a continuous phase of styrene-acrylonitrile and a dispersed phase of polybutadiene rubber. The characteristics of ABS mainly depend on the ratio of the three monomers and the molecular structure in the two phases. This allows for great flexibility in product design, and thus produces hundreds of ABS materials of different qualities on the market. These different quality materials provide different characteristics, such as medium to high impact resistance, low to high finish and high temperature distortion characteristics. ABS material has excellent machinability, appearance characteristics, low creep, excellent dimensional stability and high impact strength.
