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Modified calcium carbonate for paint

A calcium carbonate, modified technology, applied in the direction of coating, can solve the problems of high specific surface energy, poor compatibility of high molecular polymers, easy agglomeration of particles, etc., to achieve the effect of high activation rate

Inactive Publication Date: 2017-11-17
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 in the present invention is to provide a kind of modified calcium carbonate for paints, to solve the problem of existing calcium carbonate surface being hydrophilic and oleophobic, high specific surface energy, extremely easy to agglomerate between particles, and compatibility with high molecular polymers. poor sex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation method of the modified calcium carbonate for paints includes the following steps:

[0023] S1: Select marble, limestone, etc. transported from the material yard to remove impurities, dry the stone to remove surface moisture, and then crush the stone with a crusher to obtain crushed calcium carbonate;

[0024] S2: The crushed calcium carbonate obtained in step S1 is transported into a vertical mill to synchronously add a grinding aid and grind to obtain fine calcium carbonate powder;

[0025] S3: the calcium carbonate fine stone powder obtained in step S2 is classified with a classifier to obtain calcium carbonate powder of 1200-1500 mesh;

[0026] S4: Add the calcium carbonate powder prepared in step S3 to the high-speed mixer, and then add triethanolamine oleic acid soap, aluminum triacetylacetonate, and vanadium pentoxide. The temperature is increased to 56-65°C, and the temperature is 1100-1300r / min. Stir at a speed of 35-40min at a high speed to obtain mixtu...

Embodiment 1

[0031] A modified calcium carbonate for paint, in parts by weight, including the following raw materials: 196 parts of broken calcium carbonate, 5.5 parts of grinding aids, 5 parts of triethanolamine oleic acid soap, 0.6 parts of aluminum triacetylacetonate, pentoxide 0.2 part of vanadium, 0.8 part of sodium diethylenetriamine pentacarboxylate, 0.3 part of regulator, 0.6 part of coupling agent, 2.2 part of bis(2-ethylhexyl) phthalate, 0.6 part of modified polyacrylate , 0.4 part of hexenyl bisstearamide, 0.4 part of 2-(2'-hydroxy-3', 5'-di-tert-phenyl)-5-chlorobenzotriazole, 0.3 part of polyacrylamide, stabilizer 0.6 copies;

[0032] The grinding aid, in parts by weight, includes the following raw materials: 12 parts of potassium lignosulfonate, 7 parts of polyalcoholamine, and 5 parts of zinc stearate;

[0033] The preparation method of the modified calcium carbonate for paints includes the following steps:

[0034] S1: Select marble, limestone, etc. transported from the material ...

Embodiment 2

[0041] A modified calcium carbonate for paints, in parts by weight, including the following raw materials: 185 parts of broken calcium carbonate, 4.6 parts of grinding aids, 3.8 parts of triethanolamine oleic acid soap, 0.4 parts of aluminum triacetylacetonate, pentoxide 0.2 part of vanadium, 0.6 part of sodium diethylenetriamine pentacarboxylate, 0.2 part of regulator, 0.5 part of coupling agent, 1.6 part of bis(2-ethylhexyl) phthalate, 0.4 part of modified polyacrylate , 0.3 part of hexenyl bisstearamide, 0.3 part of 2-(2'-hydroxy-3', 5'-di-tert-phenyl)-5-chlorobenzotriazole, 0.2 part of polyacrylamide, stabilizer 0.4 copies;

[0042] The grinding aid, in parts by weight, includes the following raw materials: 9 parts of potassium lignosulfonate, 5 parts of polyalcoholamine, and 3 parts of zinc stearate;

[0043] The preparation method of the modified calcium carbonate for paints includes the following steps:

[0044] S1: Select marble, limestone, etc. transported from the materia...

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PUM

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Abstract

The invention discloses modified calcium carbonate for paint. The modified calcium carbonate is prepared from the following raw materials in parts by weight: 182-205 parts of calcium carbonate broken parts, 4.5-6.4 parts of a grinding aid, 3.6-6 parts of triethanolamine oleic soap, 0.4-0.8 parts of aluminum acetylacetonate, 0.2-0.3 parts of vanadium pentoxide, 0.6-1 part of sodium diethylenetriaminepentacarboxylate, 0.2-0.4 parts of a regulator, 0.5-0.7 parts of a coupling agent, 1.5-2.8 parts of bis(2-ethylhexyl) phthalate, 0.4-0.7 parts of modified polyacrylate, 0.3-0.5 parts of N,N'-ethylenebis(stearaimde), 0.3-0.5 parts of 2-(2'-hydroxy-3', 5'-ditert-phenyl)-5-benzotriazole chloride, 0.2-0.4 parts of polyacrylamide and 0.4-0.8 parts of a stabilizer. The modified calcium carbonate for the paint has high activation rate, low oil absorption value and good compatibility with high polymer.

Description

【Technical Field】 [0001] The invention belongs to the technical field of modified calcium carbonate preparation, and specifically relates to a modified calcium carbonate for paints. 【Background technique】 [0002] Calcium carbonate is a commonly used inorganic filler. Because of its wide source and low price, it is widely used in plastics, rubber, coatings, stone plates, paints and other fields. However, the surface of calcium carbonate is hydrophilic and oleophobic, has high specific surface energy, is very easy to agglomerate between particles, and has poor compatibility with high molecular polymers. Therefore, when filling into high molecular polymers, the surface of calcium carbonate must be modified to make the surface lipophilic and hydrophobic, enhance compatibility with high molecular polymers, improve dispersibility in high molecular polymers, and improve performance. [Content of the invention] [0003] The technical problem to be solved by the present invention is to p...

Claims

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Application Information

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IPC IPC(8): C09D7/12
CPCC08K9/02C08K9/04C08K2003/265
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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