TPSC Asia Pte Ltd. GPPS 1450

Identification & Functionality

Chemical Family

Styrenics

Polymer Name

General Purpose Polystyrene (GPPS)

Plastics & Elastomers Functions

Resin

Technologies

Plastics

Product Families

Plastics — Basic Thermoplastics

Styrenics

Features & Benefits

Materials Features

Very Good Heat Resistance

Applications & Uses

Markets

Consumer Goods,

Printing & Packaging

Applications

Consumer Goods — Cold-Chain & Insulation

Consumer Goods — Housewares

Printing & Packaging — Packaging

Other Packaging Materials

Plastics & Elastomers End Uses

Film,

Flexible Packaging,

Household Goods,

Microfoamed Sheet,

Rigid Films,

Rigid Packaging

Plastics & Elastomers Processing Methods

Extrusion,

Foam Extrusion,

Injection Molding

Typical Applications

• Extrusion Sheet
• Foam Extrusion
• Household

Properties

Physical Form

Crystals,

Solid

Mechanical Properties

	Value	Units	Test Method / Conditions
Unnotched Izod Impact Strength	8	kJ/m2	D-256
Tensile Strength at Yield	50	MPa	D-638
Elongation at Break	2	%	D-638
Flexural Modulus	3300	MPa	D-790
Rockwell Hardness	L-70	—	D-785

Typical Properties

	Value	Units	Test Method / Conditions
Unnotched Izod Impact Strength	8	kJ/m2	D-256
Tensile Strength at Yield	50	MPa	D-638
Elongation at Break	2	%	D-638
Flexural Modulus	3300	MPa	D-790
Rockwell Hardness	-70	Scale L	D-785

Thermal Properties

	Value	Units	Test Method / Conditions
Vicat Softening Point 10N (T increase = 50 °C/h)	376	K	D-1525
Heat Distortion Temperature	358	K	D-648
Coefficient of Linear Thermal Expansion (10-5)	0.0089	m/K	D-696

Electrical Properties

	Value	Units	Test Method / Conditions
Dielectric Strength	152000	kV/m	D-149
Surface Resistivity	Min. 10e+13	Ohms -1	—

Miscellaneous Properties

	Value	Units	Test Method / Conditions
Density	1040	kg/m3	D-792
Mold Shrinkage	0.4 - 0.7	%	D-955
Water Absorption	0.04	%	D-570

Injection Molding

	Value	Units	Test Method / Conditions
Barrel Temperature, Zone 1	170 - 180	°C	—
Barrel Temperature, Zone 2	180 - 220	°C	—
Barrel Temperature, Zone 3	210 - 240	°C	—
Barrel Temperature, Zone 4	210 - 240	°C	—
Barrel Temperature, Nozzle	210 - 240	°C	—

Rheological Properties

	Value	Units	Test Method / Conditions
Melt Flow Index (200 °C - 5 kg) 1	0.005	kg/ 10 min	D-1238
Spiral Flow at 220°C	0.55	m	D-3123