In the coating and paint industry, dolomite, after crushing, grinding and precise classification, is widely used as a multi-functional filler. Essentially a heavy calcium magnesium carbonate, it has unique chemical and physical properties that effectively improve coating application performance, mechanical properties and final appearance, while significantly reducing raw material costs.
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Excellent filling and extending effect: As an inexpensive extender pigment, it effectively fills the film volume, replaces part of the expensive titanium dioxide (TiO₂) and resin, significantly reduces formulation costs, while ensuring film thickness and fullness.
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Enhanced film mechanical properties: Its hard particle characteristics help improve the film’s wear resistance, hardness and durability. It reduces film shrinkage and internal stress, thereby resisting cracking and enhancing adhesion.
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Superior suspension and dispersion: The physical form of dolomite particles prevents sedimentation of other pigments and fillers in the coating system, improves storage stability and reduces "caking".
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Regulated rheology and application: It affects coating viscosity, improves thixotropy, making the coating easy to apply and reducing "sagging", especially suitable for high-build coatings and putties.
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Improved whiteness and hiding power: High-quality dolomite powder itself has high whiteness, which can synergize with titanium dioxide to slightly enhance the dry film hiding power of the system through light scattering effect.
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Chemical stability and weather resistance: As an inert filler, it is acid and alkali resistant, does not participate in chemical reactions, and helps improve the film’s weather resistance and chalking resistance.
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Environmental friendliness: Non-toxic and odorless, meeting the requirements of eco-friendly coatings.
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Architectural coatings: Interior and exterior wall latex paints, stone-like paints, texture coatings.
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Industrial coatings: Primers, anti-rust paints, marine paints.
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Protective coatings: Floor paints and bridge frame paints requiring high wear resistance and weather resistance.
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Putties and hole fillers: Used as the main filler to provide filling and sanding properties.
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Printing inks: Used as a filler.