Braskem UTEC7542F Ultra High Molecular Weight Polyethylene

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Braskem UTEC7542F Ultra High Molecular Weight Polyethylene
Categories:	Polymer; Thermoplastic; Polyethylene (PE); High Density (HDPE); UHMW PE (Ultra High Molecular Weight PE)
Material Notes:	UTEC7542F is an Ultra High Molecular Weight Polyethylene designed to achieve a unique particle size distribution. It is specifically intended for the battery separator markets, but is also useful for any application requiring either a low percentage of "large" particles or a higher percentage of "fine" particles. Applications: Lead acid battery separators, Synthetic Paper, Porous plastics. Mechanical property data from double-notched specimens (14º v-notch on both sides) in accordance with ISO 11542-2. Information provided by Braskem.
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Physical Properties	Original Value	Comments

Bulk Density	0.450 g/cc	ASTM D1895
Density	0.925 g/cc	ASTM D792
Particle Size	<= 100 µm	Dp10; Laser Light Scattering
	125 µm	Average. Dp50; Laser Light Scattering
	<= 250 µm	Dp90; Laser Light Scattering
Viscosity Test	32 dl/g	Intrinsic; ASTM D4020
Molecular Weight	9.50e+6 g/mol	average; Margolies

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	>= 30.0 MPa	ASTM D638
Tensile Strength, Yield	17.0 MPa	ASTM D638
Elongation at Break	>= 300 %	ASTM D638

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 1.00e+14 ohm-cm	ASTM D257
Surface Resistance	>= 1.00e+12 ohm	ASTM D257

Thermal Properties	Original Value	Comments
Melting Point	133 °C	ASTM D3418

Descriptive Properties
Particles (%)	<1.0	Laser Light Scattering. >300µm
	<4	Laser Light Scattering. >250µm

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PBRAS664 / 314057

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