PS-GF30 (PS 30% glass fiber) Material Data Sheet

PS-GF30 Designation

Polystyrene (30% Glass Fiber, Homopolymer)

PS-GF30 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-GF30 Typical uses

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

PS-GF30 Compositional summary

(CH(C6H5)-CH2)n + glass filler
Material family	Plastic (thermoplastic, amorphous)
Base material	PS (Polystyrene)
% filler (by weight)	30%
Filler/reinforcement	Glass
Filler/reinforcement form	Short fiber (<5mm)
Polymer code	PS-GF30

PS-GF30 Composition detail

Polymer	70		%
Glass (fiber)	30		%

PS-GF30 Physical properties

Density

1.28

–

1.3

g/cm³

PS-GF30 Mechanical properties

Young’s modulus	8.27	–	8.96	GPa
Specific stiffness	6.41	–	6.95	MN.m/kg
Yield strength (elastic limit)	75	–	80	MPa
Tensile strength	75.8	–	89.6	MPa
Specific strength	58.1	–	62.1	kN.m/kg
Elongation	1	–	1.2	% strain
Compressive modulus	8.27	–	8.96	GPa
Compressive strength	114	–	121	MPa
Flexural modulus	8.05	–	8.46	GPa
Flexural strength (modulus of rupture)	96.5	–	138	MPa
Shear modulus	2.97	–	3.22	GPa
Bulk modulus	12.7	–	13.4	GPa
Poisson’s ratio	0.38	–	0.4
Shape factor	8.8
Hardness – Vickers	23	–	24	HV
Hardness – Rockwell M	85	–	95
Hardness – Rockwell R	115	–	127
Elastic stored energy (springs)	324	–	375	kJ/m³
Fatigue strength at 10^7 cycles	32.4	–	35.7	MPa

PS-GF30 Impact & fracture properties

Fracture toughness	3.45	–	4.5	MPa.m^0.5
Toughness (G)	1.41	–	2.33	kJ/m²
Impact strength, notched 23 °C	4.8	–	16	kJ/m²
Impact strength, notched -30 °C	3.64	–	4.4	kJ/m²
Impact strength, unnotched 23 °C	13.3	–	14.7	kJ/m²
Impact strength, unnotched -30 °C	6.36	–	7.7	kJ/m²

PS-GF30 Thermal properties

Glass temperature	96	–	104	°C
Heat deflection temperature 0.45MPa	107	–	110	°C
Heat deflection temperature 1.8MPa	102	–	104	°C
Maximum service temperature	43	–	56	°C
Minimum service temperature	-75	–	-65	°C
Thermal conductivity	0.4	–	0.5	W/m.°C
Specific heat capacity	1.46e3	–	1.52e3	J/kg.°C
Thermal expansion coefficient	35.3	–	36.7	µstrain/°C
Thermal shock resistance	237	–	264	°C
Thermal distortion resistance	0.0111	–	0.0139	MW/m

PS-GF30 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)	17	–	18.4	MV/m
Comparative tracking index	275	–	575	V

PS-GF30 Magnetic properties

Magnetic type

Non-magnetic

PS-GF30 Optical, aesthetic and acoustic properties

Transparency	Opaque
Acoustic velocity	2.53e3	–	2.64e3	m/s
Mechanical loss coefficient (tan delta)	0.00862	–	0.00912

PS-GF30 Absorption & permeability

Water absorption @ 24 hrs

0.0818

–

0.099

PS-GF30 Processing properties

Polymer injection molding	Excellent
Polymer extrusion	Unsuitable
Polymer thermoforming	Unsuitable
Linear mold shrinkage	0.1	–	0.2	%
Melt temperature	159	–	238	°C
Mold temperature	35	–	55	°C
Molding pressure range	68.8	–	138	MPa

PS-GF30 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