Rare earth compound/titanate coupling agent modified ultrafine calcium carbonate filler

Abstract

The invention relates to a calcium carbonate filler and in particular relates to a rare earth compound / titanate coupling agent modified ultrafine calcium carbonate filler. The modified calcium carbonate is prepared from the following raw materials in parts by weight: 200 parts of ultrafine calcium carbonate, 1-2 parts of talcum powder, 1-2 parts of homo-polypropylene, 2-4 parts of jade powder, 1-2 parts of zinc sulfate, 1-2 parts of yttrium chloride, 1-2 parts of praseodymium chloride, 1-2 parts of lanthanum nitrate, 1-2 parts of titanate coupling agent TMC-TTS, 1-2 parts of graphene and 4-5 parts of accessory ingredient. According to the modified calcium carbonate powder, composite rare earth compounds such as yttrium chloride, praseodymium chloride, lanthanum nitrate and the like and the titanate coupling agent TMC-TTS are used for modifying the ultrafine calcium carbonate, so that performance indexes such as oil absorption value, viscosity and activating rate are improved; the ultrafine calcium carbonate is more easily dispersed and dissolved in high-molecular polymers; and when the ultrafine calcium carbonate is used for filling a PVC (Polyvinyl Chloride) material, the mechanical property of the PVC material is effectively improved and the good effect of toughening and reinforcing is achieved.

Description

technical field [0001] The invention relates to a calcium carbonate filler, in particular to a rare earth compound / titanate coupling agent modified ultrafine 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 impro...

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