High-flame-retardancy composite calcium carbonate and preparation method thereof

Abstract

The invention discloses high-flame-retardancy composite calcium carbonate and a preparation method thereof; the high-flame-retardancy composite calcium carbonate is prepared from calcium carbonate, unsaturated polyester resin, magnesium hydroxide, kaolin, styrene, organosilicon-modified acrylic resin, glycerol, pure benzene, isobutanol, a modifier, and suitable water; the preparation method of the high-flame-retardancy composite calcium carbonate includes the steps of (1) preparing premix for use; (2) preparing a mixed liquid; (3) preparing a modifier; (4) mixing the premix, the mixed liquid and the modifier, stirring well, grinding, drying, and crushing to obtain superfine powder. By combining the calcium carbonate with materials having good comprehensive properties, such as styrene, unsaturated polyester resin, magnesium hydroxide and organosilicon-modified acrylic resin, the production process is modified; by using the modifier and the like, high flame retardancy of the composite is effectively improved; the production process is simple, the production cycle is short, the quality is stable, the production cost is low, and the high-flame-retardancy composite calcium carbonate and the preparation method are high in applicable value.

Description

technical field [0001] The invention relates to the field of industrial fillers, in particular to a highly flame-retardant composite calcium carbonate and a preparation method thereof. Background technique [0002] Calcium carbonate is an inorganic compound, CaCO 3 Commonly known as: limestone, limestone, stone powder, marble, etc., which are formed by the combination of calcium ions and carbonate ions, are an important class of functional inorganic fillers. It is easy to process and non-toxic, and can significantly improve the processing performance and physical properties of materials and reduce production costs. It is widely used in plastics, rubber, coatings, papermaking and other fields. [0003] In the application field of calcium carbonate, most of the products belong to the category of polymers. However, the surface of calcium carbonate particles is distributed with strong hydrophilic hydroxyl groups, which is alkaline, and the interface properties of organic polyme...

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Problems solved by technology

[0003] In the application field of calcium carbonate, most of the products belong to the category of polymers. However, the surface of calcium carbonate particles is distributed with strong hydrophilic hydroxyl groups, which is alkaline, and the interface properties of organic polymer matrix materials are different and compatible. It is difficult to disperse evenly in the matrix material and form a strong bonding force with the matrix material, resulting in interface defects between the two materials and reducing some mechanical properties of the composite material.