Calcium carbonate rare earth mixed filler and production method thereof

Abstract

The invention discloses a calcium carbonate rare earth mixed filler and a production method thereof. The calcium carbonate rare earth mixed filler comprises nano calcium carbonate, carbon black powder, an aluminum zirconium coupling agent, zinc oxide, molybdenum carbide, sodium stearate, castor oil phosphate, polystyrene, polyurethane, acrylate resin, epoxy resin, a surface treatment agent, an appropriate amount of methanol and deionized water. According to the invention, the sodium stearate and the castor oil phosphate are utilized to modify the polystyrene, and the surface treatment agent ismatched, so that the polystyrene is relatively uniformly adsorbed on the surface of nano calcium carbonate, and vinyl is introduced on the surface of the calcium carbonate; and finally, acrylic esteris polymerized on the surface of the calcium carbonate in situ to change the performance of the calcium carbonate, the calcium carbonate is more beneficial to dispersion and compatibility in polymerrare earth, and good filling and reinforcing effect can be achieved. Raw materials such as the zinc oxide, the molybdenum carbide, the aluminum zirconium coupling agent and the like also increase thethermal stability and chemical corrosion resistance of the filler, so that the rare earth calcium carbonate filler has the advantages of fineness, uniformity, hydrophilicity, oleophobic property, goodstability under normal conditions, easy storage and the like.

Description

technical field [0001] The invention relates to the technical field of calcium carbonate filler, in particular to a calcium carbonate rare earth mixed filler and a production method thereof. 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 o...

AI Technical Summary

Problems solved by technology

In addition, due to the small particle size and high surface activity of nano-calcium carbonate, it is easy to agglomerate between particles, which further affects the dispersion of nano-calcium carbonate in the matrix.

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