PS-GF20 (PS 20% glass fiber) Material Data Sheet

PS-GF20 Designation

Polystyrene (20% Glass Fiber, Homopolymer)

PS-GF20 Tradenames

Aim; Austrex; Avantra; Bapolan; Barlo; Cosden; DaicelStyrol; Diarex; Dicstyrene; Doki; Dunastyr; Dylene; Edistir; Empera; Estastir; Estmec; Estyrene; Extir; Farralloy; Ferroflo; Fiberfil; Fina; Hanapor; Hanarene; Highlac; Hiloy; HKPetro; Kanelite; KanePearl; Kaofulex; Krasten; Lacqrene; Ladene; Lastirol; LGStrene; LusepAPI; Lustrex; MK-Styrol; Nippi; Novacor; NSC; Owispol; Palstyrol; Permastat; Perstyr; Polidesa; Polyflam; PolyRex; Poly-Star; Polystyrol; Porene; Raflite; Replay; Resirene; Rexirene; Shuang Li; Solaroy; Starene; Stirofor; Stirolan; Styroblend; Styrolen; Styrolux; Styron; Styron A-Tech; Sumibrite; Suprene; Tairirex; TerraWave; Toporex; Trycite; Umastyr; Uniclear; Valtra; Verex

PS-GF20 Typical uses

Toys, light diffusers, beakers, cutlery, general household appliances, video/audio cassette cases, electronic housings, refrigerator liners.

PS-GF20 Compositional summary

(CH(C6H5)-CH2)n + glass filler
Material family	Plastic (thermoplastic, amorphous)
Base material	PS (Polystyrene)
% filler (by weight)	20 %
Filler/reinforcement	Glass
Filler/reinforcement form	Short fiber (<5mm)
Polymer code	PS-GF20

PS-GF20 Composition detail

Polymer	80	%
Glass (fiber)	20	%

PS-GF20 Physical properties

Density

1.19

–

1.21

g/cm³

PS-GF20 Mechanical properties

Young’s modulus	6.21	–	8.27	GPa
Specific stiffness	5.17	–	6.89	MN.m/kg
Yield strength (elastic limit)	55.2	–	66.2	MPa
Tensile strength	69	–	82.7	MPa
Specific strength	46	–	55.2	kN.m/kg
Elongation	1	–	1.3	% strain
Compressive modulus	6.21	–	8.27	GPa
Compressive strength	110	–	117	MPa
Flexural modulus	6.53	–	7.56	GPa
Flexural strength (modulus of rupture)	96.5	–	124	MPa
Shear modulus	2.27	–	3.03	GPa
Bulk modulus	8.67	–	9.1	GPa
Poisson’s ratio	0.358	–	0.373
Shape factor	9.2
Hardness – Vickers	17	–	20	HV
Hardness – Rockwell M	80	–	95
Hardness – Rockwell R	113	–	125
Elastic stored energy (springs)	205	–	317	kJ/m³
Fatigue strength at 10^7 cycles	26.6	–	34.6	MPa

PS-GF20 Impact & fracture properties

Fracture toughness	2.61	–	3.85	MPa.m^0.5
Toughness (G)	0.964	–	2.05	kJ/m²
Impact strength, notched 23 °C	4.8	–	13	kJ/m²
Impact strength, notched -30 °C	3.64	–	4.4	kJ/m²
Impact strength, unnotched 23 °C	10.9	–	13.2	kJ/m²
Impact strength, unnotched -30 °C	5.45	–	6.6	kJ/m²

PS-GF20 Thermal properties

Glass temperature	96	–	104	°C
Heat deflection temperature 0.45MPa	104	–	110	°C
Heat deflection temperature 1.8MPa	93	–	104	°C
Maximum service temperature	42	–	57	°C
Minimum service temperature	-75	–	-65	°C
Thermal conductivity	0.238	–	0.257	W/m.°C
Specific heat capacity	1.53e3	–	1.6e3	J/kg.°C
Thermal expansion coefficient	71.3	–	72	µstrain/°C
Thermal shock resistance	99.7	–	139	°C
Thermal distortion resistance	0.00332	–	0.00359	MW/m

PS-GF20 Electrical properties

Electrical resistivity	5.98e21	–	5.38e22	µohm.cm
Electrical conductivity	3.2e-21	–	2.88e-20	%IACS
Dielectric constant (relative permittivity)	3	–	3.2
Dissipation factor (dielectric loss tangent)	0.004	–	0.006
Dielectric strength (dielectric breakdown)	16.1	–	17.4	MV/m
Comparative tracking index	275	–	575	V

PS-GF20 Magnetic properties

Magnetic type

Non-magnetic

PS-GF20 Optical, aesthetic and acoustic properties

Transparency	Opaque
Acoustic velocity	2.27e3	–	2.63e3	m/s
Mechanical loss coefficient (tan delta)	0.00912	–	0.0111

PS-GF20 Absorption & permeability

Water absorption @ 24 hrs

0.07

–

0.1

PS-GF20 Processing properties

Polymer injection molding	Excellent
Polymer extrusion	Unsuitable
Polymer thermoforming	Unsuitable
Linear mold shrinkage	0.1	–	0.3	%
Melt temperature	164	–	288	°C
Mold temperature	35	–	55	°C
Molding pressure range	68.8	–	138	MPa

PS-GF20 Durability

Water (fresh)	Excellent
Water (salt)	Excellent
Weak acids	Excellent
Strong acids	Limited use
Weak alkalis	Excellent
Strong alkalis	Acceptable
Organic solvents	Unacceptable
Oxidation at 500C	Unacceptable
UV radiation (sunlight)	Fair
Flammability	Highly flammable