Product Introduction
Light calcium carbonate—also referred to as precipitated calcium carbonate (PCC)—has calcium carbonate as its primary component, typically with a content exceeding 98%. It functions as a high-performance filler across industries including rubber, plastics, papermaking, coatings, and inks. Beyond this, it finds extensive application in organic synthesis, metallurgy, glass manufacturing, and asbestos production.
Notably, its sedimentation volume ranges from 2.4 to 2.8 mL/g. When fully dispersed, standard light calcium carbonate particles exhibit a date pit-like morphology, with a major axis of approximately 5–12 μm, a minor axis of 1–3 μm, and an average particle size of 2–3 μm.
Specification
Common sizes are 100mesh, 325 mesh, 600 mesh, 1250 mesh, We also accept customization if you need.
Chemical indicators
Calcium content | Residue on sieve (45 microns)% | pH | Whiteness | volume | Oil absorption value |
97.2% | 0.15% | 9.1 | 93 | 2.5 | 77 |
Light calcium carbonate 1250 technical parameter table, if you need other indicators, please send an inquiry.
Product Usage
Papermaking/Coatings/Rubber/Plastics
Light calcium carbonate is a widely used functional mineral filler in both the paper coating and paint industries, valued for its fine particle size, high whiteness, and excellent chemical stability. As a naturally derived calcium-based material, it is processed through controlled precipitation or fine grinding to achieve consistent quality and performance, making it an essential additive in modern industrial formulations.
In the paper coating industry, light calcium carbonate plays a crucial role in improving surface quality. It enhances paper brightness, opacity, and smoothness, which are essential properties for high-quality printing and packaging paper. When applied in coating formulations, it fills microscopic voids on the paper surface, resulting in a more uniform and refined texture. This improves ink absorption and print clarity, making the paper more suitable for magazines, books, and premium packaging materials.
Another key benefit in paper applications is its ability to improve coating efficiency. Light calcium carbonate contributes to better pigment dispersion and coating stability, reducing defects such as streaking or uneven surfaces. It also helps reduce production costs by partially replacing more expensive pigment materials while maintaining desired optical properties.
In the paint industry, light calcium carbonate functions as an important extender pigment. It improves paint volume and coverage without significantly increasing cost, making it an economical choice for large-scale production. Its fine particle structure ensures smooth dispersion within resin systems, contributing to stable viscosity and consistent application performance.
Additionally, it enhances key mechanical properties of paint films, including hardness, abrasion resistance, and durability. This makes coatings more resistant to wear and environmental exposure, extending their service life in both interior and exterior applications. It is widely used in architectural paints, industrial coatings, primers, and decorative finishes.
Light calcium carbonate also contributes to improved whiteness and brightness in paint formulations. By increasing opacity, it reduces the need for high-cost pigments in certain applications, helping manufacturers achieve cost-effective yet visually appealing results.
Furthermore, its chemical inertness ensures compatibility with various binder systems such as acrylic, latex, and alkyd resins. This flexibility allows it to be used across a wide range of formulations without affecting stability or performance.
Overall, light calcium carbonate is a highly functional and versatile material that significantly enhances both paper coating and paint industry applications. Its combination of optical improvement, cost efficiency, and performance enhancement makes it an indispensable component in modern industrial production.
Light calcium carbonate is a key functional filler widely used in the paint industry to enhance product quality, improve performance, and optimize production costs. With its fine particle size, high whiteness, and stable chemical properties, it has become an essential ingredient in modern paint formulations, especially in architectural, industrial, and decorative coatings.
One of the primary ways light calcium carbonate enhances paint quality is by improving opacity and coverage. When added to paint formulations, it helps increase the hiding power of coatings, allowing surfaces to be covered more effectively with fewer layers. This improves application efficiency and reduces material consumption, making the overall painting process more economical.
In addition to optical performance, light calcium carbonate significantly improves the rheological properties of paint. It helps stabilize viscosity, ensuring smooth application during brushing, rolling, or spraying. This prevents common issues such as sagging, dripping, or uneven coating, resulting in a more uniform and professional finish.
Another important benefit is its contribution to mechanical strength. Light calcium carbonate enhances the hardness and abrasion resistance of dried paint films. This makes coated surfaces more durable and resistant to scratches, wear, and environmental damage. As a result, it is widely used in interior wall paints, exterior coatings, and industrial protective finishes.
Cost efficiency is another major advantage of using light calcium carbonate as a functional filler. It allows manufacturers to partially replace more expensive raw materials such as titanium dioxide and resin binders without significantly affecting performance. This helps reduce production costs while maintaining high-quality standards, which is especially important in large-scale manufacturing.
Light calcium carbonate also improves paint stability during storage. Its inert nature prevents unwanted chemical reactions within the formulation, reducing the risk of separation, sedimentation, or degradation over time. This ensures a longer shelf life and consistent product performance.
Furthermore, its high whiteness contributes to better color brightness and consistency, making it suitable for both white and tinted paint systems. It also improves pigment dispersion, helping achieve more uniform color distribution in finished coatings.
Overall, light calcium carbonate is an essential functional filler in the paint industry. It enhances opacity, durability, application performance, and cost efficiency, making it a critical material for high-quality and sustainable paint production.
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