Dow Questra® QA804 High Heat Syndiotactic Polystyrene, 30% Glass Filled

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Dow Questra® QA804 High Heat Syndiotactic Polystyrene, 30% Glass Filled (discontinued **)
Categories:	Polymer; Thermoplastic; Polystyrene (PS); Syndiotactic Polystyrene (SPS); Syndiotactic Polystyrene (SPS) with Glass or Carbon Fiber
Material Notes:	QUESTRA® Crystalline Polymers are semi-crystalline engineering thermoplastic resins produced from styrene monomer using a proprietary metallocene catalyst system. These syndiotactic polymers are very different from conventional styrenics in structure, and properties, exhibiting excellent heat resistance with a melting temperature of 270.C, excellent moisture and chemical resistance together with a unique combination of exceptional electrical properties, toughness and processability. QUESTRA crystalline polymers are typically used as moldings, films, and fibers in Electronic, Electrical, Automotive, Consumer and Industrial, Filtration, Optical/photographic film and Specialty fiber/non-woven markets. QUESTRA QA804 is a 30% glass filled, impact modified, polymer exhibiting moderate temperature resistance suitable for Consumer and Industrial applications. Data provided by Dow Chemical.
Key Words:	SPS
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Physical Properties	Original Value	Comments

Density	1.22 g/cc	ASTM Data
Water Absorption	0.010 %

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	92.0 MPa	ASTM Data
Tensile Strength, Yield	92.0 MPa	ASTM Data
Tensile Modulus	7.58 GPa	ASTM Data
Izod Impact, Notched	0.960 J/cm	ASTM Data

Electrical Properties	Original Value	Comments
Dielectric Strength	21.8 kV/mm
Dissipation Factor	0.0010

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	29.8 µm/m-°C @Temperature 20.0 °C	ASTM data
Deflection Temperature at 0.46 MPa (66 psi)	260 °C	Unannealed; ASTM Data
Deflection Temperature at 1.8 MPa (264 psi)	204 °C	Unannealed; ASTM Data
Vicat Softening Point	263 °C

**
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PDW139 / 34370

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