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Nyco MD1250 WOLLASTOCOAT® Wollastonite

Category	Ceramic , Oxide , Silicon Oxide , Other Engineering Material , Additive/Filler for Polymer
Manufacturer	Nyco
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Nyco MD1250 WOLLASTOCOAT® Wollastonite.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

Wollastonite is a naturally occurring white mineral with an acicular (needle-shaped) particle structure. This distinctive particle morphology makes wollastonite an ideal performance mineral for a broad range of industrial and consumer applications, including polymer reinforcement; coatings; construction/architecture reinforcement; enhancing friction stability in discs, lings, and brakes; and metallurgy.Information provided by NYCO Minerals.

Physical Properties	Metric	English	Comments
Bulk Density	0.720 g/cc	0.0260 lb/in³	Loose
	0.910 g/cc	0.0329 lb/in³	Tapped
Density	2.90 g/cc	0.105 lb/in³
Brightness	89 %	89 %	G.E. Brightness
Oil Absorption	25 %	25 %
Solubility in Water	0.0095 %	0.0095 %
Moisture Absorption	0.120 %	0.120 %
Particle Size	>= 1.0 µm	>= 1.0 µm	10% smaller than
	4.0 µm	4.0 µm	median; Microtrac
	<= 12 µm	<= 12 µm	90% smaller than
pH	9.9	9.9	10% Slurry
Specific Surface Area	2.9 m²/g	2.9 m²/g	BET
Molecular Weight	116 g/mol	116 g/mol

Mechanical Properties	Metric	English	Comments
Hardness, Mohs	4.5	4.5
Tensile Strength	2700 - 4100 MPa @Diameter 0.00300 - 0.150 mm	392000 - 595000 psi @Diameter 0.000118 - 0.00591 in	Fiber Strength
Modulus of Elasticity	303 - 530 GPa @Diameter 0.00300 - 0.150 mm	43900 - 76900 ksi @Diameter 0.000118 - 0.00591 in	Fiber Modulus

Thermal Properties	Metric	English	Comments
CTE, linear	6.50 µm/m-°C	3.61 µin/in-°F
Thermal Conductivity	2.63 - 2.77 W/m-K	18.3 - 19.2 BTU-in/hr-ft²-°F
Melting Point	1410 °C	2570 °F	ASTM D1857
	1540 °C	2800 °F	theoretical

Optical Properties	Metric	English	Comments
Refractive Index	1.63	1.63

Component Elements Properties	Metric	English
Al2O3	0.25 %	0.25 %
CaO	45.72 %	45.72 %
Fe2O3	0.25 %	0.25 %
K2O	0.20 %	0.20 %
Loss on Ignition(%)	6.3 %	6.3 %
MgO	0.71 %	0.71 %
MnO	0.020 %	0.020 %
SiO2	46.52 %	46.52 %
TiO2	0.050 %	0.050 %

Electrical Properties	Metric	English	Comments
Electrical Resistivity	1.30e+13 ohm-cm	1.30e+13 ohm-cm	pure wollastonite
Dielectric Constant	6.8 @Frequency 10000 Hz	6.8 @Frequency 10000 Hz
	6.8 @Frequency 100000 Hz	6.8 @Frequency 100000 Hz
	6.9 @Frequency 1.00e+6 Hz	6.9 @Frequency 1.00e+6 Hz
	6.9 @Frequency 1000 Hz	6.9 @Frequency 1000 Hz
Dissipation Factor	0.00152 @Frequency 1000 Hz	0.00152 @Frequency 1000 Hz
	0.0046 @Frequency 10000 Hz	0.0046 @Frequency 10000 Hz
	0.0046 @Frequency 1.00e+6 Hz	0.0046 @Frequency 1.00e+6 Hz
	0.0078 @Frequency 100000 Hz	0.0078 @Frequency 100000 Hz

Descriptive Properties	Value	Comments
Appearance	White
Bulking Value (gal./lbs.)	0.0413
Minus 400 U.S. Mesh Screen (%)	100
Morphology	Acicular

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