ABS plastic - Processing performance

ABS plastic - Processing performance - ABS plastic General performance ABS appearance is opaque in ivory aggregate, manage to make do their products into a colorful, and with a high gloss. ABS relative density is 1. 05, bibulous rate is low. ABS and its integration with other material is easy to printing, coating and plating surface treatment. Oxygen index of ABS is 18 ~ 20, belong to flammable polymers, flame yellow, have black smoke, and a special cinnamon. Mechanical properties of ABS with excellent mechanical properties, and its excellent impact strength, can be used under low temperature; ABS good wear resistance and good dimensional stability, but also has oil resistance, can be used for medium load and rotating speed of the bearing. ABS creep resistance is larger than the PSF and PC, but smaller than the PA and POM. ABS bending strength and compression strength of plastic in poor. The mechanical properties of ABS are greatly influenced by the temperature. Thermal properties of ABS thermal deformation temperature of 93 ~ 118 ℃, the products after annealing treatment can improve around 10 ℃. ABS in - At 40 ℃ can still show some toughness, can be in - Use 40 ~ 100 ℃ temperature range. Electrical properties of ABS has good electrical insulation, and almost not influenced by temperature, humidity and frequency, can be used in most circumstances. Environmental performance of ABS is not affected by water, inorganic salt, alkali and acid, but soluble in ketones, aldehydes and chlorinated hydrocarbon, corroded by ice acetic acid, vegetable oil, etc can produce stress cracking. ABS poor weather resistance, under the action of ultraviolet light, easy to produce degradation; In outdoor after six months, the impact strength decline in half. ABS plastic processing performance of ABS like PS is a process of high performance thermoplastic, general machining methods are available. ABS melt fluidity is better than PVC and PC, but inferior to PE, PA and PS, similar to POM and HIPS; The flow characteristics of ABS is a non-newtonian fluid; The melt viscosity and processing temperature and shear rate have relationship, but more sensitive to shear rate. ABS thermal stability is good, not easy to appear the degradation phenomenon. ABS bibulous rate is higher, should be done before processing and dry processing. General product drying conditions for temperature of 80 ~ 85 ℃, time of 2 ~ 4 h. The special requirements of products, Such as electroplating) Drying conditions for temperature of 70 ~ 80 ℃, time of 18 ~ 18 h. ABS products internal stress in machining, the size of the internal stress can be immersed in ice acetic acid test; Such as the stress is too big and products on stress cracking is forbidden, should carry on the annealing treatment, specific conditions for put in 70 ~ 80 ℃ hot air circulation drying oven within 2 ~ 4 h, then cool to room temperature.