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Malvern Minerals Wollastokup® FT Silane Treated Wollastonite

Category Ceramic , Oxide , Silicon Oxide , Other Engineering Material , Additive/Filler for Polymer
Manufacturer Malvern Minerals Company
Trade Name Wollastokup®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Malvern Minerals Wollastokup® FT Silane Treated Wollastonite.pdf
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Material Notes:
Wollastokup® is a custom, silane treated calcium metasilicate (wollastonite) which is used as a functional filler in coatings, plastics, rubber and others due in part to its acicular or “toothpick” shape. Within coatings, Wollastokup® improves the durability of the film, improves resistance to weathering, reduces gloss, acts as a flatting and suspending agent and reduces pigment consumption. In plastics, improvements in tensile and flexural strength along with reduction in resin consumption are among the many benefits within plastics. Additionally, improvements in thermal and dimensional stability at elevated temperatures are noted within plastics.Information provided by Malvern Minerals Company.
Physical Properties Metric English Comments
Specific Gravity 2.90 g/cc
2.90 g/cc
Oil Absorption 32 %
32 %
Moisture Absorption at Equilibrium <= 0.10 %
<= 0.10 %
Particle Size 50 µm
50 µm
D50
pH 9.0 - 10
9.0 - 10
Mechanical Properties Metric English Comments
Hardness, Mohs 4.0 - 5.0
4.0 - 5.0
Thermal Properties Metric English Comments
Melting Point 838 °C
1540 °F
Optical Properties Metric English Comments
Refractive Index 1.63
1.63
Component Elements Properties Metric English Comments
Al2O3 0.25 %
0.25 %
CaO 46.5 %
46.5 %
Fe2O3 0.20 %
0.20 %
Loss on Ignition(%) <= 1.0 %
<= 1.0 %
Inorganic
MgO 0.20 %
0.20 %
SiO2 52.2 %
52.2 %
Descriptive Properties Value Comments
Color White Powder
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