Nano calcium carbonate is an important nanotechnology product with unique physical and chemical properties and a wide range of applications.
Section 1:Definition and Features
Nano calcium carbonate refers to a polymer of calcium carbonate molecules where at least one dimension of the particle size is controlled between 1 to 100 nm. Its particle size falls within the transitional region between cluster molecules and macroscopic objects, thus exhibiting many unique properties. Individual primary particles of nano calcium carbonate are invisible to the naked eye and even under a common optical microscope; a high-resolution electron microscope is required to clearly observe its structure and shape.
II. Performance Features
Particle Size Fine: The particle size of nano calcium carbonate ranges between 0.01~0.1μm, featuring ultra-fine characteristics.
High Specific Surface Area: Due to the fine particle size, the specific surface area of nano calcium carbonate is relatively large, which endows it with higher surface activity.
High surface activity rate: The surface of nano calcium carbonate has a high activity rate, making it easy to undergo chemical reactions or interactions with other substances.
High Whiteness: High-purity calcium carbonate boasts superior brightness, making it widely applicable in industries such as coatings and plastics.
Good stability: Nano calcium carbonate boasts high stability, maintaining its structure and properties under certain conditions.
Section 3: Application Fields
Plastic Industry: Nanocalcium carbonate is an essential filler in the plastic industry, enhancing the material's mechanical, thermal, and processing properties. Adding nanocalcium carbonate significantly boosts the plastic's impact strength, tensile strength, and flexural strength, while also reducing its shrinkage rate and thermal expansion coefficient.
Ink: Nano calcium carbonate exhibits excellent dispersion and transparency in ink products, offering good luster and ink absorption. Ink formulated with nano calcium carbonate boasts good printing properties, stability, quick drying, and no adverse effects.
Papermaking: Nano calcium carbonate has development potential in the papermaking industry. Adding nano calcium carbonate can enhance the looseness, apparent fineness, water absorption, and strength as well as high-speed printing performance of special paper.
Rubber Industry: Nano calcium carbonate is primarily used in the rubber industry for reinforcing and filling rubber products, enhancing their wear resistance, tear resistance, tensile strength, and other properties, thereby extending their service life.
4. Production Process
The production process of calcium carbonate nanoparticles mainly employs carbonization methods, including intermittent carbonization, continuous spray carbonization, and ultra-gravity carbonization, among others. Additionally, there are methods such as double decomposition, jacketed reactor, emulsion, and in-situ carbonization via electrochemical methods.
V. Market Outlook
Nano calcium carbonate, as a new type of inorganic functional material, holds broad prospects for applications across various fields. With the continuous development of nanotechnology, the performance and application scope of nano calcium carbonate will further expand.
