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3 Industrial Applications of Stearic Acid Coated Calcium Carbonate Powder
November 26,2025
Stearic acid is one of the most widely used surface coating agents for calcium-carbonate-based fillers, thanks to its low cost and high efficiency. So, what are the specific applications of stearic acid coated calcium carbonate powder, and why is it so highly favored across industries? Let’s explore the details with APEX Vietnam in the following article!
To overcome these issues, the CaCO3 surface is coated with stearic acid. This coating modifies the particle surface, transforming CaCO3 from hydrophilic to hydrophobic - giving it enhanced moisture resistance and significantly reduced friction.
Stearic acid coated calcium carbonate powder
This type of coated powder is extensively used in the production of plastic pipes, films, household goods, and plastic additives for materials such as PP, PE, and PVC, ensuring high-quality and well-finished products.
Application of stearic acid coated calcium carbonate powder in the plastics industry
This type of coated powder is widely used in the production of cement and concrete, dry mortar and tile adhesives, as well as high-end finishing materials such as granite and terrazzo.
Thanks to these advantages, the coated powder is extensively applied in the production of tires, gaskets, rubber mats, and other technical rubber components.
Products using stearic acid coated calcium carbonate powder
Beyond focusing on technology and raw materials, APEX Viet Nam prioritizes customer service above all. Every order is closely monitored, with transparent technical specifications, and a dedicated technical team is always ready to support businesses throughout the usage process. The company’s policy of “quality first - customer first” is a commitment applied throughout all production and operational activities.
In addition, APEX owns its own fleet of transport vehicles, allowing full control over delivery schedules and ensuring materials arrive on time - especially crucial for factories requiring a stable supply to maintain continuous production. This convenience provides significant advantages for businesses, minimizing the risk of supply disruption.
With outstanding advantages in performance, durability, and adaptability across multiple industries, the applications of stearic acid coated calcium carbonate powder are increasingly expanding in modern industrial production. If your business requires a high-quality, stable, and internationally standardized raw material supply, contact us immediately for detailed consultation and quotations!
What is stearic acid coated calcium carbonate powder?
In its natural form, CaCO3 powder is hydrophilic - meaning it easily absorbs, dissolves, or interacts with water. However, in certain industrial sectors such as plastics, this water-loving characteristic becomes a significant limitation, increasing friction during processing and reducing overall production efficiency.To overcome these issues, the CaCO3 surface is coated with stearic acid. This coating modifies the particle surface, transforming CaCO3 from hydrophilic to hydrophobic - giving it enhanced moisture resistance and significantly reduced friction.
Stearic acid coated calcium carbonate powder
Effects of Stearic Acid Coating
Research has shown that composite materials containing stearic acid coated calcium carbonate powder exhibit superior mechanical properties compared to those using uncoated CaCO3.- Improved dispersion: The stearic acid coating helps prevent particle agglomeration, allowing CaCO3 to be distributed more evenly throughout the polymer matrix.
- Enhanced compatibility and adhesion: The stearic acid layer facilitates stronger bonding between CaCO3 particles and the polymer, resulting in a more homogeneous and durable composite material.
- Increased mechanical performance: Thanks to better dispersion and adhesion, composites using stearic-acid-coated CaCO3 demonstrate higher tensile strength and improved impact resistance compared to composites made with uncoated CaCO3.
- Improved rheological properties: After coating, CaCO3 powder exhibits better flowability and porosity, making it easier to process and manufacture, enhancing efficiency in industrial applications.
Industrial Applications of Stearic Acid Coated Calcium Carbonate Powder
Stearic acid coated calcium carbonate powder finds extensive industrial applications across sectors such as paints, plastics, rubber, and paper, serving as a filler or additive that enhances smoothness, dispersion, and overall durability of the final products. Its versatility and functional benefits make the applications of stearic acid coated calcium carbonate powder a key factor in optimizing production quality and efficiency.Plastics industry
In the plastics sector, stearic acid coated CaCO3 is applied as an advanced filler. The stearic acid coating allows the calcium carbonate powder to disperse more uniformly within the plastic matrix, reducing energy consumption during processing while improving flexibility, gloss, hardness, and wear resistance of the finished products.This type of coated powder is extensively used in the production of plastic pipes, films, household goods, and plastic additives for materials such as PP, PE, and PVC, ensuring high-quality and well-finished products.
Application of stearic acid coated calcium carbonate powder in the plastics industry
Construction materials industry
The stearic acid coating enhances the compatibility between calcium carbonate powder and polymers, improves dispersion, reduces energy consumption during processing, and simultaneously provides a smoother, glossier, and more wear-resistant finished surface.This type of coated powder is widely used in the production of cement and concrete, dry mortar and tile adhesives, as well as high-end finishing materials such as granite and terrazzo.
Rubber industry
Stearic acid coated calcium carbonate powder plays a crucial role in the rubber industry, as its applications of stearic acid coated calcium carbonate powder help increase wear resistance and extend the lifespan of rubber products. Additionally, the coating improves processability, making rubber easier to shape, ensuring uniform dispersion of other fillers, and reducing friction during manufacturing.Thanks to these advantages, the coated powder is extensively applied in the production of tires, gaskets, rubber mats, and other technical rubber components.
Products using stearic acid coated calcium carbonate powder
Where to Buy High-Quality Stearic Acid Coated Calcium Carbonate Powder?
APEX Viet Nam is one of the rare enterprises in Vietnam owning a fully integrated production chain, from natural CaCO3 ore sourcing, modern grinding and coating factories, to a proactive logistics system, ensuring optimal quality control and cost efficiency for customers. Thanks to this “one-stop” model, APEX can offer more competitive prices than the general market while maintaining consistent and stable quality across all production batches.Beyond focusing on technology and raw materials, APEX Viet Nam prioritizes customer service above all. Every order is closely monitored, with transparent technical specifications, and a dedicated technical team is always ready to support businesses throughout the usage process. The company’s policy of “quality first - customer first” is a commitment applied throughout all production and operational activities.
In addition, APEX owns its own fleet of transport vehicles, allowing full control over delivery schedules and ensuring materials arrive on time - especially crucial for factories requiring a stable supply to maintain continuous production. This convenience provides significant advantages for businesses, minimizing the risk of supply disruption.
With outstanding advantages in performance, durability, and adaptability across multiple industries, the applications of stearic acid coated calcium carbonate powder are increasingly expanding in modern industrial production. If your business requires a high-quality, stable, and internationally standardized raw material supply, contact us immediately for detailed consultation and quotations!