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Method for preparing iron-doped calcium carbonate for organic matrix filling

An organic matrix and calcium carbonate technology, applied in the field of materials, can solve the problems affecting the appearance, heat resistance and mechanical properties of materials, the temperature use window of nano calcium carbonate becomes smaller, deformation, etc., to achieve good magnetism, enhance functionality, reduce The effect of reunion

Inactive Publication Date: 2017-11-14
张娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of dispersants and surface modifiers greatly reduces the temperature window of nano-calcium carbonate, because commonly used dispersants and coupling agents are easy to decompose at high temperatures, causing bubbles, cracks, defects, deformation, etc., thus Affect the appearance, heat resistance and mechanical properties of the material;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method for iron-doped calcium carbonate for organic matrix filling, comprising the following steps:

[0018] (1) Take ferrocene, add it to deionized water 40 times its weight, add trimethylolpropane, raise the temperature to 60°C, add p-phenoxybenzoic acid, keep stirring for 1 hour, filter, and remove the precipitate Washing with water and drying at room temperature to obtain iron carboxylate;

[0019] (2) Take calcium carbonate, add it to dichloromethane which is 7 times its weight, ultrasonicate for 3 minutes, add triethylamine, stir evenly, and obtain calcium carbonate pre-dispersion;

[0020] (3) Add the above-mentioned carboxylated iron into the calcium carbonate pre-dispersion liquid, stir evenly, blow in nitrogen gas, stir and react at room temperature for 7 hours, distill off the solvent, and dry at 60°C for 2 hours to obtain iron-doped aminated carbonic acid calcium;

[0021] (4) Take oleic acid, add it to 100 times its weight in deionized water...

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PUM

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Abstract

The invention discloses a method for preparing iron-doped calcium carbonate for organic matrix filling. The calcium carbonate disclosed by the invention is particularly applicable to serve as a polymer filling material and can be well compatible with the polymer after being subjected to surface organic treatment, so that the dispersion of the calcium carbonate and the polymer can be improved, agglomeration is effectively reduced, and the stability intensity of the composite material of the calcium carbonate and the polymer is improved. According to iron doping in the calcium carbonate disclosed by the invention, the calcium carbonate is endowed with excellent magnetism, the functionality is enhanced, and the application range is widened.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a method for preparing iron-doped calcium carbonate for organic matrix filling. Background technique [0002] Calcium carbonate is a very important functional inorganic filler, which is widely used in industrial fields such as plastics, rubber, coatings and papermaking. In the application field of calcium carbonate, most products belong to the category of polymers, such as plastics, rubber, adhesives, coatings, etc., and occupy an important market share. Modifiers play an important role in the performance and application of nano calcium carbonate. For example, the addition of dispersant can reduce the agglomeration of nanoparticles and improve the dispersion, and the addition of surface modifier can improve the compatibility of nano-calcium carbonate in the polymer system. It can be seen that dispersants and surface modifiers are crucial for the application of nano-calcium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/08
CPCC09C1/021C09C3/006C09C3/08
Inventor 张娟
Owner 张娟