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Products Description

HIPS Jiangsu Saibaolong HP825 high impact polystyrene high strength injection molding grade plastic raw material
High impact polystyrene, also known as HIPS, is a thermoplastic material made of elastomer modified polystyrene.
HIPS has the dimensional stability of general polystyrene (GPPS), and has better impact strength and rigidity. 

The relative density of HIPS is 1.04~1.06, and the thermal deformation temperature is 70~84 ℃. The tensile strength of HIPS is about 15~30MPa, and the elongation is 35~60%. It increases with the decrease of temperature and the increase of strain rate, which is a little like rubber toughening system. 

HIPS is somewhat like a viscoelastic solid, which will creep when exposed to constant tensile stress. Creep decreases with the increase of molecular weight, and generally increases with the increase of rubber content. The creep behavior of HIPS strongly depends on the average molecular weight (Mw). The bending strength is 29.4~50 MPa, the impact strength is 0.09~0.16N/M, the Vicat softening point is 84~100 ℃, and the melt index is 2~9g/10min. The heat resistance of HIPS components depends on their shape, production conditions, heat source type and heating duration, as well as the HIPS level.