ASA: Acrylonitrile-Styrene-Acrylate Copolymer

General Properties

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ASA

Acrylonitrile-Styrene-Acrylate Copolymer


Acrylonitrile-styrene-acrylate copolymer (ASA) like ABS (see previous example) is also a terpolymer of three monomer units and has similar properties, but is more weather-resistant. ASA can be referred to as SAN-Polymer when acrylic ester is evenly distributed throughout the polymer.

Structural Formula


Properties

Glass Transition Temperature50 to -40 / 95 to 105°C
Melting Temperatures and EnthalpiesThe enthalpy of fusion of a substance, also known as latent heat, is a measure of the energy input, typically heat, which is necessary to convert a substance from solid to liquid state. The melting point of a substance is the temperature at which it changes state from solid (crystalline) to liquid (isotropic melt).Melting Temperature-
Melting Temperatures and EnthalpiesThe enthalpy of fusion of a substance, also known as latent heat, is a measure of the energy input, typically heat, which is necessary to convert a substance from solid to liquid state. The melting point of a substance is the temperature at which it changes state from solid (crystalline) to liquid (isotropic melt).Melting Enthalpy-
Decomposition Temperature415 to 425°C
Young's Modulus2300 to 2900 MPa
Coefficient of Linear Thermal Expansion85 to 105 *10-6/K
Specific Heat Capacity1.3 to 1.4 J/(g*K)
Thermal Conductivity0.17 to 0.19 W/(m*K)
Density1.04 to 1.07 g/cm³
MorphologyAmorphous thermoplastic
General propertiesHigh impact strength and stability. High chemical stability, high gloss, high weatherability.
ProcessingInjection molding, extrusion
ApplicationsOuter parts of vehicles. Thermalls stressed electrical devices, e.g.coffee machines and microwaves. Sport and leisure sector.

NETZSCH Measurement

InstrumentDSC 204 F1 Phoenix®
Sample Mass11.40 mg
Isothermal Phase15 min
Heating/Colling Rates10 K/min
CrucibleAl, pierced lid
AtmosphereN2 (50 ml/min)