Akzo Nobel Expancel® 820 SL 40 Unexpanded microspheres in aqueous dispersion

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Akzo Nobel Expancel® 820 SL 40 Unexpanded microspheres in aqueous dispersion
Categories:	Other Engineering Material; Additive/Filler for Polymer; Polymer; Thermoplastic
Material Notes:	Expancel microspheres are thermoplastic hollow spheres. The microspheres are white spherically formed particles with a thermoplastic shell encapsulating a gas. When the microspheres are heated the thermoplastic shell softens and the gas increases its pressure, resulting in an expansion of the spheres. Applications: Boxboard; Fine paper
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Physical Properties	Original Value	Comments

Density	<= 0.0250 g/cc	TMA
Particle Size	10 - 16 µm	D(0.5)

Thermal Properties	Original Value	Comments
Transformation Temperature	76.0 - 81.0 °C	Expansion Starting Temperature
	115 - 125 °C	Temp at Max Expansion

Descriptive Properties
Microsphere Content, %	40

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PEXPAN33 / 38090

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