Sodium metaaluminate/sodium tripolyphosphate modified calcium carbonate filler

Abstract

The invention relates to calcium carbonate filler, and particularly relates to sodium metaaluminate / sodium tripolyphosphate modified calcium carbonate filler. The modified calcium carbonate is prepared from the following raw materials in parts by weight: 200 parts of calcium carbonate, 1-2 parts of ammonium bicarbonate, 1-2 parts of titanium sulfate, 2-3 parts of urotropin, 1-2 parts of lanthanum oxide, 1-2 parts of sodium metaaluminate, 1-2 parts of potassium carbonate, 1-2 parts of sodium tripolyphosphate, 2-3 parts of sodium silicate, 2-3 parts of mandarin oil, and 4-5 parts of additive. According to the calcium carbonate powder, the calcium carbonate powder is modified by a plurality of composite materials such as sodium metaaluminate, sodium tripolyphosphate and sodium silicate, the performance indexes, such as oil absorption value, viscosity and activation rate of the modified calcium carbonate powder are all improved, the modified calcium carbonate powder is easier to disperse and be compatible in high-molecular polymers, the mechanical property of a PVC (polyvinyl chloride) material filled by the modified calcium carbonate powder is obviously improved compared with that of the PVC material filled with non-modified calcium carbonate powder, so that the modified calcium carbonate filler achieves good filling and reinforcing effects.

Description

technical field [0001] The invention relates to a calcium carbonate filler, in particular to a sodium metaaluminate / sodium tripolyphosphate 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 prod...

AI Technical Summary

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