3M S42XHS Glass Bubbles

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3M S42XHS Glass Bubbles
Categories:	Ceramic; Glass
Material Notes:	3M™ Glass Bubbles S42XHS are high-strength additives for polymers made from a water-resistant and chemically stable sodalime-borosilicate glass. These hollow glass microspheres can be compounded with a variety of polymers to reduce the overall thermal conductivity of the composite. These composites can be coated or incorporated into deep sea oil pipelines to improve the flow assurance properties of the system. The high strength of S42XHS glass bubbles can withstand both the high processing pressure of polymer extrusion and the pressure of seawater in many applications. The S42XHS glass bubbles have isostatic crush strengths of 8000 psi with a minimum of 90% survival. Information provided by 3M
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Physical Properties	Metric	English	Comments

Density	0.420 g/cc	0.0152 lb/in³	True
Volatiles	0.50 %	0.50 %
Particle Size	22 µm	22 µm	Average diameter
pH	9.5	9.5	5% loading in water

Mechanical Properties	Metric	English	Comments
Compressive Strength	55.2 MPa	8000 psi	90% survival by volume
	55.2 MPa	8000 psi	90% survival by volume

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.140 W/m-K @Temperature 50.0 °C	0.972 BTU-in/hr-ft²-°F @Temperature 122 °F
Softening Point	600 °C	1110 °F

Descriptive Properties
Alkalinity	0.5 milliequivalents/gram
Appearance	White, powdery		unaided eye
Composition	Soda-lime-borosilicate glass
Flotation	97.5%		density <1.0 g/cc
Packing factor	60%		bulk
Shape	Hollow spheres with thin walls

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CMM33072 / 167819

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