A wear-resistant surface modified calcium carbonate filler

Abstract

The invention relates to calcium carbonate filler, and specifically relates to wear-resistant surface modified calcium carbonate filler. The modified calcium carbonate filler is prepared from the following raw materials in parts by weight: 200 parts of calcium carbonate powder, 1-2 parts of iron-ore slag powder, 4-5 parts of polytetrafluoroethylene, 1-2 parts of graphene, 1-2 parts of hexadecyl trimethyl ammonium bromide, 1-2 parts of polyacrylamide, 1-2 parts of titanium dioxide, 2-3 parts of dimethyl disulfydryl stannum isooctyl acetate, 2-3 parts of sodium lignin sulfonate, 2-3 parts of hydroxyl silicone oil and 4-5 parts of an assistant. According to the modified calcium carbonate powder provided by the invention, calcium carbonate is modified by adopting various surfactants such as hexadecyl trimethyl ammonium bromide, polyacrylamide, sodium lignin sulfonate and hydroxyl silicone oil. The performance indexes of the modified calcium carbonate powder such as oil factor, viscosity and activating rate are improved, and the modified calcium carbonate powder is easier to disperse and compatibilize in a macromolecular polymer. When the modified calcium carbonate powder is used to fill a PVC (Polyvinyl Chloride) material, the reinforcing effect of the modified calcium carbonate is more excellent than unmodified calcium carbonate.

Description

technical field [0001] The invention relates to a calcium carbonate filler, in particular to a wear-resistant surface modified calcium carbonate filler. Background technique [0002] Calcium carbonate is an important class of functional inorganic fillers. It has the advantages of low price, abundant reserves, stable performance, easy processing, and non-toxicity. It can significantly improve the processing performance and physical properties of materials and reduce production costs. It is widely used In the fields of plastics, rubber, coatings, papermaking, etc., because calcium carbonate is a hydrophilic compound, there are defects such as insufficient compatibility with polymers and poor dispersion in practical applications, and satisfactory filling and reinforcing effects cannot be achieved. Therefore, Calcium carbonate needs to be modified to improve its dispersion and compatibility in various materials, so as to achieve the effect of improving product performance. Con...

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Problems solved by technology

[0002] Calcium carbonate is an important class of functional inorganic fillers. It has the advantages of low price, abundant reserves, stable performance, easy processing, and non-toxicity. It can significantly improve the processing performance and physical properties of materials and reduce production costs. It is widely used In the fields of plastics, rubber, coatings, papermaking, etc., because calcium carbonate is a hydrophilic compound, there are defects such as insufficient compatibility with polymers and poor dispersion in practical applications, and satisfactory filling and reinforcing effects cannot be achieved. Therefore, Calcium carbonate needs to be modified to improve its dispersion and compatibility in various materials, so as to achieve the effect of improving product performance