Chalk nano calcium carbonate, nano calcium carbonate and ultrafine heavy calcium carbonate

The production process of nano calcium carbonate mainly uses carbonization method, mainly intermittent carbonization method, continuous spray carbonization method, hypergravity carbonization method and other production methods, the particle size is between, the production process of heavy calcium carbonate is mainly crushing, ultrafine grinding, classification and surface modification, the most important thing is that the particle size and mesh number are different, at present, the modifier nano calcium can be divided into surfactants, coupling agents, polymers and inorganic substances according to its structure and characteristics, Mainly in order to give full play to the nano effect of nano calcium carbonate to improve its dispersion in composite materials, enhance the affinity with organisms, and improve the performance of nano calcium carbonate filled composite materials, it is necessary to use effective modification process and surface modification method to modify its surface, and then expand its application field. It's convenient and quick to get results in a few minutes, I hope it can help you.

CAS accession number: 471-34-1

EINECs accession number] 207-439-9

Molecular weight] molecular formula and structural formula] The molecular formula is CaCO3, and the structural formula is as follows:

Common chemical reactions] have the general properties of calcium carbonate, and produce bubbles and dissolve in case of dilute acetic acid, dilute hydrochloric acid, and dilute nitric acid. The corresponding calcium salts are generated, and carbon dioxide is released. When heated to about 900, it decomposes into calcium oxide and carbon dioxide.

Excess carbon dioxide is introduced into water mixed with CaCO3 to form a calcium bicarbonate solution.

Prohibited substances] acids, alkalis.

Aggregation hazards] No aggregation hazards.

Nano calcium carbonate is a new type of ultra-fine solid powder material developed in the 80s of the 20th century, and its particle size is in between. Due to the ultra-refinement of nano-calcium carbonate particles, their crystal structure and surface electronic structure change, resulting in quantum size effects, small size effects, surface effects and macroscopic quantum effects that ordinary calcium carbonate does not have.

Appearance] white or light yellow early stove colored, odorless, hexagonal crystal powder.

Melting Point] ( 1339

Decomposition temperature】 825

Relative density] solubility performance] insoluble in water and ethanol, soluble in acid, release carbon dioxide, also soluble in ammonium chloride solution.

Stability Lu Lu] Stability is blind.

Nano-scale ultrafine calcium carbonate (English name nanocalcium carbonate) is a form of calcium carbonate, nano (nanomaterarial) represents a scale, 10-9m, the symbol is nm. Nanoscale ultrafine calcium carbonate is a new type of ultrafine solid material developed in the 80s. Nanomaterials are materials that are in the nanoscale range in at least one dimension in three-dimensional space, or are made up of them as basic units, with particles in the range of 1 100 nm.

Nanomaterials have small size effects, surface effects, and macroscopic quantum tunneling effects. Therefore, it shows many unique properties and has a wide range of uses in catalysis, light filtering, light absorption, medicine, magnetic media and new materials. The appearance is white or light yellow hexagonal crystal powder, odorless, insoluble in water and ethanol, soluble in acid, and releases carbon dioxide.

The molecular formula is CaCO3. Nano calcium carbonate has many special properties than general calcium carbonate. Therefore, nano calcium carbonate is a functional inorganic filler, which not only has the effect of increasing product volume and reducing product cost, but also has excellent reinforcing properties.