Product Details

GPPS General Purpose Polystyrene

Appearance: Clear pellets
Solubility in water: Insoluble
Density: 1.04-1.111 g/cm3 (20 C)

Usage: Common commercial polymer.

Introduction of GPPS:
General Purpose Polystyrene is a kind of thermoplastic resin, is a colorless, odorless, tasteless, shiny, transparent beaded or granular solid. Density is 1.04 to 1.09, transparency is 88% to 92%, refractive index is 1.59 to 1.60. In the stress function, resulting in birefringence, the so-called stress - optical effect. Product of the melting temperature is 150 to 180 C, thermal decomposition temperature is 300 C, the heat distortion temperature is 70 to 100 C, long-term use temperature is 60 ~ 80 C

	Testing standards	Test Conditions	Units	PG-22	PG-33	PG-80	PG-80N	PG-383	PG-383M
Melt flow index	D-1238	200°C*5kg	g/10min.	17.5	7.4	4.0	5.7	3.0	3.0
Softening point	D-1525	1kg.	°C	87.0	94.0	97.7	97.6	105.0	96.3
Tensile strength	D-638		Kg/cm²	420	470	500	490	560	520
Tensile modulus	D-638	-		26460	26220	26720	26720	28140	-
Bending strength	D-790	-	Kg/cm²	540	670	690	690	820	-
Flexural modulus	D-790		Kg/cm²	31000	31000	31000	31000	33000	-
Heat distortion temperature	D-648	-	C	75	79	81	81	86	-
Use	-	-	-	Mixed leveling	Injection level	Injection level	Injection level	Board-level charge	Injection level