Product Introduction
Heavy calcium carbonate , produced by milling high-purity natural calcite, marble, or limestone, is a versatile and cost-effective inorganic filler powder. It is distinguished by its high chemical purity, strong inertness, excellent chemical resistance, and remarkable thermal stability (stable under 400°C). Additional advantages include high brightness, low oil absorption, low refractive index, soft texture, absence of crystal water, low hardness (resulting in low abrasion), non-toxicity, odorlessness, and superior dispersibility. These properties make it a preferred material for a wide range of industrial applications, including rubber, plastics, paints, water-based coatings, paper, concrete, and fire-resistant building materials.
Specification
Common sizes are 100mesh,200mesh, 325 mesh, 400mesh,600 mesh,800mesh, 1250 mesh, 1500mesh,2500mesh,4000mesh,5000mesh,We also accept customization if you need.
Chemical indicators
Calcium content | Residue on sieve | pH | Whiteness | Moisture | Clinching point (d100) |
98.6% | 0.005 | 9 | 94.2 | 0.18 | 11. 11 |
Ground calcium carbonate325 technical parameter table, if you need other indicators, please send an inquiry.
Product Usage
Rubber/Plastics/ Paints,/Water-based coatings,/Papermaking/ Concrete/Fireproof ceiling materials.
Premium heavy calcium carbonate, widely recognized as an ideal filler for rubber and plastics, plays a crucial role in the production of PVC, PE, and PP plastic materials. As a naturally derived mineral filler, it is processed through grinding and classification to achieve fine particle size, high whiteness, and stable chemical properties, making it highly suitable for modern polymer manufacturing systems.
In PVC production, premium heavy calcium carbonate is extensively used to improve rigidity and dimensional stability. It enhances the hardness of PVC products such as pipes, profiles, sheets, and fittings while reducing overall production costs by partially replacing more expensive resin materials. Its fine particle distribution ensures uniform dispersion within the polymer matrix, which contributes to smoother processing and improved surface finish.
For polyethylene (PE) applications, calcium carbonate helps optimize processing performance by improving melt flow characteristics and reducing shrinkage during cooling. This results in more stable product dimensions and better mechanical consistency. It is commonly used in PE films, packaging materials, and molded products where cost efficiency and performance balance are important.
In polypropylene (PP) production, premium heavy calcium carbonate enhances stiffness and impact resistance when properly formulated. It improves the structural strength of PP-based products while maintaining good processability during extrusion and injection molding. This makes it widely applicable in automotive parts, household goods, and industrial components.
Another important advantage of using heavy calcium carbonate in PVC, PE, and PP systems is its ability to improve whiteness and opacity. This reduces the need for additional pigments and additives, simplifying formulation design and lowering production costs. Its high purity also ensures compatibility with various polymer systems without causing unwanted chemical reactions.
From an economic perspective, the use of premium heavy calcium carbonate significantly reduces raw material costs while maintaining product quality. It acts as an effective extender, allowing manufacturers to optimize resin consumption without compromising performance standards.
Overall, premium heavy calcium carbonate is an essential functional filler in PVC, PE, and PP plastic production. Its combination of cost efficiency, processing improvement, and mechanical enhancement makes it a key material in modern plastic manufacturing industries.
Premium heavy calcium carbonate, widely used as a functional filler in rubber and plastic industries, plays an important role in improving the mechanical properties of various industrial products. Due to its fine particle size, high purity, and stable chemical composition, it integrates effectively into polymer matrices, enhancing strength, durability, and overall performance.
One of the primary benefits of heavy calcium carbonate is its ability to increase rigidity and hardness in rubber and plastic materials. When incorporated into formulations, it acts as a reinforcing filler that improves structural stability, making end products more resistant to deformation under mechanical stress. This is especially valuable in industrial applications where durability is critical, such as automotive parts, construction materials, and machinery components.
In rubber products, premium heavy calcium carbonate enhances tensile strength and abrasion resistance. It helps improve the overall wear performance of rubber-based goods such as seals, gaskets, hoses, and industrial belts. By reinforcing the rubber matrix, it reduces material fatigue and extends product service life, even under demanding working conditions.
In plastic applications, calcium carbonate contributes to improved impact resistance and dimensional stability. It helps reduce shrinkage during cooling processes, ensuring more precise and consistent product shapes. This is particularly important in injection-molded and extruded products where accuracy and stability are essential for industrial use.
Another significant advantage is its effect on processing performance. The addition of heavy calcium carbonate improves melt flow behavior, making materials easier to process during extrusion and molding. This leads to higher production efficiency and reduced energy consumption in manufacturing operations.
Additionally, the use of premium heavy calcium carbonate helps optimize cost-performance balance. By partially replacing more expensive polymer resins, manufacturers can reduce raw material costs while still achieving enhanced mechanical properties. This makes it a highly economical solution for large-scale industrial production.
Its high whiteness and chemical stability also ensure compatibility with various additives and pigments, allowing for flexible formulation in different industrial applications without compromising product quality.
In conclusion, premium heavy calcium carbonate is a highly effective reinforcing filler that significantly improves the mechanical performance of rubber and plastic products. Its ability to enhance strength, durability, processing efficiency, and cost-effectiveness makes it an essential material in modern industrial manufacturing systems.
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