The study of using of nanofillers in polyolefinic matrix - DSpace UTB
The study of using of nanofillers in polyolefinic matrix - DSpace UTB
The study of using of nanofillers in polyolefinic matrix - DSpace UTB
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4. CALCIUM CARBONATE<br />
Tomas Bata University <strong>in</strong> Zlín, Faculty <strong>of</strong> Technology<br />
Calcium carbonate is the next type <strong>of</strong> filler which is used for preparation <strong>of</strong> composite<br />
materials. Low price and high number <strong>of</strong> deposit <strong>of</strong> calcium carbonate are the ma<strong>in</strong> reason<br />
why calcium carbonate is used as filler.<br />
<strong>The</strong> chemical formula <strong>of</strong> calcium carbonate is CaCO3. Colour <strong>of</strong> calcium carbonate is very<br />
variable: from white to black. <strong>The</strong> hardness <strong>of</strong> calcium carbonate is 3 and the density is 2380<br />
kg.m -3 .<br />
Calcium carbonate is commonly used as filler <strong>in</strong> polymeric <strong>in</strong>dustry. <strong>The</strong> ma<strong>in</strong> reason is very<br />
easy – the price <strong>of</strong> filler is lower <strong>in</strong> comparison with nan<strong>of</strong>iller. <strong>The</strong> next argument is<br />
possibility to polypropylene or polyethylene <strong>matrix</strong>es.<br />
In polymer <strong>in</strong>dustry, two types <strong>of</strong> calcium carbonate can be used. Micronized calcium<br />
carbonate is the first type, micro coagulate calcium carbonate is the second type. [36-40]<br />
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