Surface treated calcium carbonate powder and preparation method thereof

A calcium carbonate powder, surface treatment technology, applied in inorganic pigment treatment, chemical instruments and methods, dyeing organosilicon compound treatment and other directions, can solve the problems of poor dispersibility, poor plastic compatibility, etc. Improved performance and good modification effect

Inactive Publication Date: 2017-12-08
贺州钟山县双文碳酸钙新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a surface-treated calcium carbonate powder and its preparation method to solve the existing problems of calcium carbonate such as hydrophilic and oleophobic, poor dispersibility, and poor compatibility with plastics.

Method used

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  • Surface treated calcium carbonate powder and preparation method thereof

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preparation example Construction

[0028] The preparation method of the calcium carbonate powder through surface treatment, comprises the following steps:

[0029] S1: Select marble, limestone, etc. transported from the material field to clean and remove impurities, dry the stone to remove surface moisture, and then use a crusher to crush the stone to obtain calcium carbonate fragments;

[0030] S2: transporting the broken calcium carbonate obtained in step S1 into a vertical mill and synchronously adding grinding aids and grinding to obtain calcium carbonate fine stone powder;

[0031] S3: classifying the calcium carbonate fine stone powder prepared in step S2 with a classifier to obtain calcium carbonate powder of 800-1200 mesh;

[0032] S4: Add the calcium carbonate powder prepared in step S3 into a high-speed mixer, then add sodium lauryl sulfate, aluminum triacetylacetonate, and magnesium oxide, raise the temperature to 92-103°C, and set the temperature at 1100-1300r / min Stir at high speed for 20-25min to...

Embodiment 1

[0037] A surface-treated calcium carbonate powder, in parts by weight, comprising the following raw materials: 150 parts of broken calcium carbonate, 4 parts of grinding aids, 3.6 parts of sodium lauryl sulfate, 0.4 parts of aluminum triacetylacetonate, 0.1 part of magnesium oxide, 0.7 part of sodium diethylenetriaminepentacarboxylate, 0.1 part of acrylate regulator, 0.5 part of 3-aminopropyltriethoxysilane, bis(2-ethylhexyl) phthalate 1.8 parts, 0.4 parts of modified polyacrylate, 0.3 parts of hexenyl bis stearamide, 0.4 parts of 2-(2'-hydroxyl-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole part, 0.1 part of polyacrylamide, 0.5 part of calcium soap stabilizer;

[0038] The grinding aid, in parts by weight, comprises the following raw materials: 13 parts of potassium lignosulfonate, 6 parts of triethanolamine, 4 parts of zinc stearate;

[0039] The preparation method of the calcium carbonate powder through surface treatment, comprises the following steps:

[0040] S1: Sel...

Embodiment 2

[0047] A surface-treated calcium carbonate powder, in parts by weight, comprising the following raw materials: 136 parts of broken calcium carbonate, 3.2 parts of grinding aids, 2.8 parts of sodium lauryl sulfate, 0.2 parts of aluminum triacetylacetonate, 0.1 part of magnesium oxide, 0.5 part of sodium diethylenetriaminepentacarboxylate, 0.1 part of acrylate regulator, 0.4 part of 3-aminopropyltriethoxysilane, bis(2-ethylhexyl) phthalate 1.2 parts, 0.3 parts of modified polyacrylate, 0.2 parts of hexenyl bis stearamide, 0.2 parts of 2-(2'-hydroxyl-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole part, 0.1 part of polyacrylamide, 0.3 part of calcium soap stabilizer;

[0048] The grinding aid, in parts by weight, comprises the following raw materials: 10 parts of potassium lignosulfonate, 4 parts of triethanolamine, and 3 parts of zinc stearate;

[0049] The preparation method of the calcium carbonate powder through surface treatment, comprises the following steps:

[0050] S...

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Abstract

The invention discloses surface treated calcium carbonate powder and a preparation method thereof. The surface treated calcium carbonate powder is prepared from the following raw materials of broken calcium carbonate, a grinding aid, sodium dodecyl sulfate, aluminum acetylacetonate, magnesium oxide, diethylene triamine sodium pentacarboxylate, a modifier, 3-aminopropyltriethoxysilane, phthalandione bis(2-ethyl hexoate) ester, modified polyacrylate, hexenyl distearamide, 2-(2'-hydroxyl-3',5'-ditert phenyl)-5-benzotriazole chloride, polyacrylamide and a stabilizer. The surface treated calcium carbonate powder is prepared by the steps of stone cleaning, removing impurities, dewatering, breaking, grinding, surface modifying, performance adjusting, smashing, drying and the like. The surface treated calcium carbonate powder disclosed by the invention can be fully dispersed, has small agglomeration after being added into plastic and has good dispersity, and all items of mechanical property of modified calcium carbonate are all remarkably improved.

Description

【Technical field】 [0001] The invention belongs to the technical field of preparation of modified calcium carbonate, and in particular relates to a surface-treated calcium carbonate powder and a preparation method thereof. 【Background technique】 [0002] Calcium carbonate is a commonly used inorganic filler. It is widely used in plastics, rubber, coatings and other fields due to its wide source and low price. However, the surface of calcium carbonate is hydrophilic and oleophobic, the specific surface area is large, the surface energy is high, and the particles are easily agglomerated. When directly or in large quantities filled in organic matrix materials, it is not only difficult to disperse evenly, but also has a weak binding force with the matrix, resulting in Defects at the two-phase interface, some performance degradation of the composite. Therefore, in order to broaden its application field, it is necessary to modify the surface of calcium carbonate to make its surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/06C09C3/08C09C3/12C09C3/10
CPCC09C1/021C09C1/022C09C3/006C09C3/06C09C3/08C09C3/12
Inventor 唐文易双
Owner 贺州钟山县双文碳酸钙新材料有限公司
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