Process characteristics of ABS plastic molding
标签:abs plastic Moulding
2022-08-16 11:34:52
2022-08-16 11:34:52
ABS has strong hygroscopicity and moisture-proof awareness. It must be fully dried and preheated (80~90℃ for at least 2 hours) before molding, and the humidity of the abs plastic Moulding product must be below 0.03%. Fusion junction of Ab muscle resin
Viscosity is less known about temperature (unlike other amorphous resins). Although the injection temperature of the abs is slightly better than PS, it also cannot use invisible home heating to reduce its stickiness. Its fluidity can be further improved by increasing screw speed or injection strain. The general processing heat is 190-235°C.
The melt viscosity of ABS is medium, which can be higher than that of PS and HIPS, and requires a better injection pressure (500~1000bar). Gastric muscle material uses medium size and speed and other injection speeds and works better. (Unless the shape is complex and thin-walled parts require high jet speeds), commodity nozzle positions are susceptible to atmospheric streaks.
The molding temperature of ABS is quite high, and its special mildew heat is usually adjusted at 25-70 °C. When producing larger products, the temperature inside the stationary mold (front mold) is usually about 5°C higher than that of the bacteria (back mold). (Mildew temperature will affect the finish of plastic material components, lowering the temperature will result in lower finish)
ABS should not stay in the high temperature barrel for too long (must be less than 30 minutes), usually it breaks down easily and turns yellow. Typical procedural aspects of Ab muscle plastic material components: Vehicles (dash panels, tool hatches, tire covers, mirror boxes, etc.), freezers, high-powered instruments (hair dryers, mixers, food processors, garden mowers, etc.) and others. )), cell phone cases, typewriter keyboards, recreational vehicles including golf carts and jet skis,
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