Analysis of the performance characteristics of ABS plastic materials

1. General performance

The appearance of ABS plastic is opaque and ivory-colored pellets. It is non-toxic, tasteless, and has low water absorption. Its products can be colored into various colors and have a high gloss of 90%. ABS has a good combination with other materials, and is easy for surface printing, coating and plating. The oxygen index of ABS is 18.2, it is a flammable polymer, the flame is yellow, there is black smoke, it is burnt but does not drip, and it emits a special cinnamon smell. ABS is a kind of resin with very good comprehensive performance. It has higher impact strength and surface hardness in a relatively wide temperature range, higher heat distortion temperature than PA and PVC, and good dimensional stability.

The fluidity of ABS melt is better than PVC and PC, but worse than PE, PA and PS, similar to POM and HIPS. The flow characteristics of ABS are non-Newtonian fluids, and its melt viscosity is related to processing temperature and shear rate, but it is more sensitive to shear rate.

2. Mechanical properties

It has excellent mechanical properties, its impact strength is very good, and it can be used at extremely low temperatures. Even if the ABS product is damaged, it can only be tensile failure and not impact failure. ABS has excellent wear resistance, good dimensional stability, and oil resistance, and can be used for bearings under medium loads and speeds. The creep of ABS is larger than that of PSF and PC, but smaller than that of PA and POM. The flexural strength and compressive strength of ABS are inferior among plastics. The mechanical properties of ABS are greatly affected by temperature.

Plastic Spline-Tensile Test

3. Thermal performance

ABS is an amorphous polymer and has no obvious melting point; it has high melt viscosity, poor fluidity, poor weather resistance, and can be discolored by ultraviolet rays; heat distortion temperature is 70-107℃ (about 85), and the product can still be Increase by about 10°C. It is sensitive to temperature and shear rate; ABS can still show a certain degree of toughness at -40℃, and can be used for a long time in the temperature range of -40℃ to 85℃.

4. Electrical performance

ABS has good electrical insulation and is hardly affected by temperature, humidity and frequency, and can be used in most environments.

5. Environmental performance

ABS is not affected by water, inorganic salts, alkali alcohols and hydrocarbon solvents and various acids, but it is soluble in ketones, aldehydes and chlorinated hydrocarbons, and will cause stress cracking when corroded by glacial acetic acid and vegetable oil.