Reinforcing the future with Nordkalk W-Series
Nordkalk W-Series covers wide range of wollastonite products. Wollastonite (CaSiO3) is a naturally occurring white, needle-like calcium silicate mineral. As a mineral with a wide range of uses, wollastonite is popular raw material in a number of applications, including plastics, paints and coatings, and in ceramic and friction materials.
The unique properties of wollastonite – its chemical composition, high degree of whiteness, high pH value and needle-like particle structure – combined with the high, consistent quality of Nordkalk’s wollastonite products and the company’s long-term manufacturing knowhow at its Lappeenranta quarry, guarantee a large demand for Nordkalk’s wollastonite products around the world.
Due to the first-class quality of Nordkalk’s wollastonite products, the W-Series products are used as a functional filler in applications that require high technical quality. Wollastonite improves, for instance, the mechanical properties and wear resistance of various plastic compounds and applications such as in the plastic components of car interiors, exteriors and engine compartments and in a variety of electrical insulation plastics.
Due to the diverse physical-chemical properties of wollastonite it is used as a filler in many paint and coating applications. In various industrial paints and coatings, wollastonite improves corrosion resistance, strengthens the film and reduces cracking. Wollastonite improves, among other things, the heat resistance and mechanical properties of powder coatings and the durability of road-marking paints.
In ceramics and friction applications, the chemical properties of wollastonite offer many process technical benefits and as a white, strength-increasing filler it enhances mechanical properties.
Nordkalk’s wollastonite products are available with various surface treatments, which improve the coupling between the wollastonite and polymer and thus boost the functional properties of wollastonite.
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Nordkalk is the leading limestone company in Northern Europe. We deliver essential raw materials to numerous industries, and our solutions contribute to clean air and water as well as productivity of agricultural land.