Preparation process of modified calcium carbonate with good dispersibility

A technology with good dispersibility and preparation process, which can be applied in the treatment of dyed low-molecular-weight organic compounds, dyed high-molecular organic compounds, and fibrous fillers. problems such as poor performance, to achieve the effect of simple preparation process and convenient operation

Inactive Publication Date: 2017-11-28
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 preparation process of modified calcium carbonate with good dispersibility, so as to solve the existing problems of calcium carbonate such as hydrophilic and oleophobic, poor dispersibility, poor compatibility with plastics, etc.

Method used

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  • Preparation process of modified calcium carbonate with good dispersibility
  • Preparation process of modified calcium carbonate with good dispersibility

Examples

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preparation example Construction

[0029] The preparation method of the good modified calcium carbonate of described dispersibility, comprises the following steps:

[0030] 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;

[0031] 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;

[0032] S3: classifying the calcium carbonate fine stone powder prepared in step S2 with a classifier to obtain calcium carbonate powder of 800-1200 mesh;

[0033] S4: Add the calcium carbonate powder prepared in step S3 into a high-speed mixer, then add sodium dodecylbenzenesulfonate, zinc isooctanoate, and a molecular sieve catalyst, heat up to 92-103°C, and set the temperature at 1100-1300r / min The speed is stirred at a hig...

Embodiment 1

[0038] A modified calcium carbonate with good dispersibility, in parts by weight, comprising the following raw materials: 142 parts of broken calcium carbonate, 4 parts of grinding aids, 3.3 parts of sodium dodecylbenzenesulfonate, 0.4 parts of zinc isooctanoate , 0.1 part of molecular sieve catalyst, 0.7 part of sodium diethylenetriaminepentacarboxylate, 0.1 part of acrylate regulator, 0.5 part of 3-aminopropyltriethoxysilane, phthalic acid di(2-ethylhexyl) 1.8 parts of ester, 0.4 part of modified polyacrylate, 0.3 part of hexenylbisstearamide, 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole 0.4 parts, 0.1 parts of polyacrylamide, 0.5 parts of calcium soap stabilizer;

[0039] 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;

[0040] The preparation method of the good modified calcium carbonate of described dispersibility, comprises the foll...

Embodiment 2

[0048] A modified calcium carbonate with good dispersibility, in parts by weight, comprising the following raw materials: 130 parts of broken calcium carbonate, 3 parts of grinding aids, 2.2 parts of sodium dodecylbenzenesulfonate, 0.2 parts of zinc isooctanoate , 0.1 part of molecular sieve catalyst, 0.5 part of sodium diethylenetriamine pentacarboxylate, 0.1 part of acrylate regulator, 0.4 part of 3-aminopropyltriethoxysilane, bis(2-ethylhexyl) phthalate 1.2 parts of ester, 0.3 part of modified polyacrylate, 0.2 part of hexenylbisstearamide, 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole 0.2 parts, 0.1 parts of polyacrylamide, 0.3 parts of calcium soap stabilizer;

[0049] 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;

[0050] The preparation method of the good modified calcium carbonate of described dispersibility, comprises the fo...

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Abstract

The invention discloses a preparation process of modified calcium carbonate with good dispersibility. The modified calcium carbonate with good dispersibility is prepared from the following raw materials: calcium carbonate crushing substances, grinding aids, sodium dodecyl benzene sulfonate, zinc isoocatanoate, molecular sieve based catalysts, diethylenetriamine sodium pentacarboxylate, regulating agents, 3-aminopropyltriethoxysilane, phthalandione bis(2-ethyl hexyl)ester, modified polyacrylic ester, hexenyl distearamide, 2-(2'-hydroxyl-3',5'-di-tert-butylbenzene)-5-chloridized benzotriazole, polyacrylamide and stabilizing agents. The modified calcium carbonate with good dispersibility is prepared through the steps of stone material cleaning, impurity removal, water removal, crushing, grinding, surface modification, performance regulation, pulverization, drying and the like. The preparation process provided by the invention is simple; the operation is convenient; the industrialization can be easily realized; the produced modified calcium carbonate is applicable to plastics and the like.

Description

【Technical field】 [0001] The invention belongs to the technical field of preparation of modified calcium carbonate, and in particular relates to a preparation process of modified calcium carbonate with good dispersibility. 【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 surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K9/06C08K9/00C08K3/26C08L27/06C09C1/02C09C3/04C09C3/06C09C3/08C09C3/10C09C3/12
CPCC08K9/04C08K3/26C08K9/00C08K9/06C08K9/08C08K2003/265C08K2201/003C08L27/06C09C1/022C09C3/006C09C3/041C09C3/06C09C3/08C09C3/10C09C3/12
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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