Characteristics of ABS materials
ABS is a kind of resin with excellent comprehensive performance. It has a high impact strength and surface hardness in a wide range of temperature, and the thermal deformation temperature is higher than PA, PVC and the dimension stability is good.
1. Melt Fluidity: ABS melt's fluidity is better than PVC and PC, but worse than PE, PA and PS, similar to POM and HIPS. ABS belongs to non-newtonian fluid, and its melt viscosity is related to machining temperature and shear rate, but is more sensitive to shear rate.
2. Mechanical properties: ABS has excellent mechanical properties, and its impact strength is excellent, which can be used at extremely low temperature. Even if the ABS product is damaged, it can only be caused by tension rather than impacting. ABS has good abrasion resistance, good dimensional stability and oil resistance. So ABS can be used for making bearing under moderate load and speed. The creep properties of ABS is larger than PSF and PC, but smaller than PA and POM. The bending strength and compressive strength of ABS are poor in plastic. The mechanical properties of ABS are greatly affected by temperature.
3. Thermal performance: ABS belongs to amorphous polymer without obvious melting point; The melt viscosity is high, the liquidity is poor, the weatherability is poor, the ultraviolet ray can change color; Thermal deformation temperature is 70-107 ℃ (85), this deformation temperature can be increase 10 ℃ after annealing treatment. It is sensitive to temperature and shear rate. ABS can still show some toughness when under - 40 ℃, can be used in range of - 40-85 ℃ temperature for a long time.
4. Electrical performance: the electrical insulation of ABS is good, and it is almost impervious to temperature, humidity and frequency, and can be used in most environments.
5. Environmental performance: ABS is not affected by water, inorganic salt, alkali alcohol and hydrocarbon solvents, and the influence of many kinds of acid, but soluble in ketones, aldehydes and chlorinated hydrocarbon. ABS can be subjected to stress cracking when eroded by glacial acetic acid, vegetable oil, etc
