August 31, 2024 – Modified nano-calcium carbonate has recently garnered significant attention in the field of plastics production. Compared to traditional calcium carbonate fillers, this specially modified nano-sized calcium carbonate has significantly enhanced the overall performance of plastic products. Not only does it increase the volume of the products, but it also greatly improves the hardness, strength, and heat resistance of plastics, particularly excelling in the manufacture of polyvinyl chloride (PVC) materials.
Nano-calcium carbonate has found widespread applications in various fields such as wires, cables, and pipes, effectively enhancing the strength, barrier properties, and thermal stability of plastics. The incorporation of this high-performance filler allows plastic products to exhibit superior stability when subjected to external forces and temperature variations.
According to the Color Masterbatch Industry Network, to ensure the optimal effectiveness of nano-calcium carbonate, the national standard plan “Nano Calcium Carbonate” clearly stipulates several core technical indicators. These include particle size control, oil absorption value, dispersibility, moisture content, impurity control, pH value, and heavy metal content, among others. These stringent standards guarantee the quality and effectiveness of nano-calcium carbonate during the production process, further ensuring the final performance of plastic products.
Specifically, the particle size of nano-calcium carbonate is strictly controlled between 80 and 120 nanometers to optimize its dispersion in plastics. The oil absorption value is minimized to reduce the absorption of plasticizers and maintain the processing performance of the resin. Additionally, appropriate surface treatment is applied to enhance its dispersibility and prevent secondary aggregation of particles. Furthermore, rigorous moisture control, impurity control, and pH management are all aimed at ensuring that plastic products meet the highest quality standards during production.
It’s worth mentioning that controlling the heavy metal content in nano-calcium carbonate is also crucial. Heavy metals like manganese and chromium can catalyze plastic degradation, reducing weather resistance and anti-aging properties, hence their content must be kept to a minimum.
In conclusion, modified nano-calcium carbonate, with its outstanding physical and mechanical properties and ability to improve processing performance, has become an indispensable high-performance filler in the modern plastics industry. Its broad application prospects and significant enhancement of plastic product quality will undoubtedly bring new development opportunities to the plastics industry.