Syndiotactic polystyrene (SPS)

Alternative and trade names
SPS, XAREC

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Description

Syndiotactic polystyrene (SPS) is a crystalline engineering plastic starting from a commodity monomeric material of styrene. SPS offers quite different properties compared to conventional amorphous polystyrene. It has a high melting point (463 K), good solvent resistance, excellent electrical properties with low dielectric loss, high heat deflection temperature, low water absorption and hydrolytic resistance. SPS also offers excellent dimensional precision during injection molding because of equal density of amorphous and crystalline parts.

This material data has been provided by Matmatch.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

Property	Temperature	Value	Comment
Density	23.0 °C	1.05 g/cm³ Show Material materials with Density of 1.05 g/cm³
Water absorption	23.0 °C	0.04 % Show Material materials with Water absorption of 0.04 %	ASTM D570, 24h equilibrium

Mechanical

Property	Temperature	Value
Elastic modulus	23.0 °C	3.4 GPa Show Material materials with Elastic modulus of 3.4 GPa
Elongation at yield	23.0 °C	1 % Show Material materials with Elongation at yield of 1 %
Flexural modulus	23.0 °C	39 GPa Show Material materials with Flexural modulus of 39 GPa
Flexural strength	23.0 °C	71 MPa Show Material materials with Flexural strength of 71 MPa
Tensile strength	23.0 °C	41 MPa Show Material materials with Tensile strength of 41 MPa
Yield strength	23.0 °C	41 MPa Show Material materials with Yield strength of 41 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	9.2E-5 1/K Show Material materials with Coefficient of thermal expansion of 9.2E-5 1/K
Glass transition temperature		99.85 °C Show Material materials with Glass transition temperature of 99.85 °C
Heat deflection temperature, 1.80 MPa		98.85 °C Show Material materials with Heat deflection temperature, 1.80 MPa of 98.85 °C
Latent heat of fusion		53 J/g Show Material materials with Latent heat of fusion of 53 J/g
Max service temperature		126.85 °C Show Material materials with Max service temperature of 126.85 °C
Melting point		269.85 °C Show Material materials with Melting point of 269.85 °C	DSC

Electrical

Property	Temperature	Value	Comment
Dielectric constant, 1MHz	23.0 °C	2.6 [-] Show Material materials with Dielectric constant, 1MHz of 2.6 [-]
Surface resistivity	23.0 °C	1.00E+14 Ω/sq Show Material materials with Surface resistivity of 1.00E+14 Ω/sq	min., ASTM D257

Technological properties

Property
Application areas	Thermoplastics is used for automobile parts, electrical and electronic parts.

Syndiotactic polystyrene (SPS)

Description

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Properties