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Surface treatment method for improving oleophylic and hydrophobic properties of calcium carbonate

A lipophilic and hydrophobic surface treatment technology, which is applied in dyeing polymer organic compound treatment, dyeing physical treatment, inorganic pigment treatment, etc., can solve the problems of poor lipophilic and hydrophobic properties on the surface of calcium carbonate, and achieve improved lipophilic and hydrophobic properties, The effect of simple surface treatment method and high production efficiency

Inactive Publication Date: 2020-04-17
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 invention provides a surface treatment method for improving the lipophilic and hydrophobic properties of calcium carbonate to solve the problem of poor lipophilic and hydrophobic properties on the surface of calcium carbonate

Method used

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Examples

Experimental program
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preparation example Construction

[0022] In an embodiment, the preparation method of described high-performance plastics modified calcium carbonate comprises the following steps:

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

[0024] S2: The crushed calcium carbonate obtained in step S1 is transported into the vertical mill to synchronously add a grinding aid composed of sodium lignosulfonate and triisopropanolamine and grind it. The amount of the grinding aid is broken calcium carbonate The 2.6-3.2% of weight, the weight ratio of described sodium lignosulfonate and triisopropanolamine is 1:3.5-6, makes calcium carbonate fine stone powder;

[0025] S3: classifying the calcium carbonate fine stone powder prepared in step S2 with a classifier to obtain calcium carbonate powder of 100-200 mesh;

[0026] S4: Add a modifier to the cal...

Embodiment 1

[0037] A preparation method of modified calcium carbonate for high-performance plastics, comprising the following steps:

[0038] S1: Select the limestone transported from the material yard to clean and remove impurities, dry the stone to remove surface moisture, and then crush the stone with a crusher to obtain calcium carbonate crushed material;

[0039] S2: The crushed calcium carbonate obtained in step S1 is transported into the vertical mill and ground by synchronously adding a grinding aid composed of sodium lignosulfonate and triisopropanolamine. The amount of the grinding aid is broken calcium carbonate 3% of weight, the weight ratio of described sodium lignosulfonate and triisopropanolamine is 1:5.6, makes calcium carbonate fine stone powder;

[0040] S3: Classifying the calcium carbonate fine stone powder prepared in step S2 with a classifier to obtain 200-mesh calcium carbonate powder;

[0041] S4: Add a modifier to the calcium carbonate powder prepared in step S3,...

Embodiment 2

[0051]A preparation method of modified calcium carbonate for high-performance plastics, comprising the following steps:

[0052] S1: Select the limestone transported from the material yard to clean and remove impurities, dry the stone to remove surface moisture, and then crush the stone with a crusher to obtain calcium carbonate crushed material;

[0053] S2: The crushed calcium carbonate obtained in step S1 is transported into the vertical mill to synchronously add a grinding aid composed of sodium lignosulfonate and triisopropanolamine and grind it. The amount of the grinding aid is broken calcium carbonate 2.7% of weight, the weight ratio of described sodium lignosulfonate and triisopropanolamine is 1:3.8, makes calcium carbonate fine stone powder;

[0054] S3: classifying the calcium carbonate fine stone powder prepared in step S2 with a classifier to obtain 100-mesh calcium carbonate powder;

[0055] S4: Add a modifier to the calcium carbonate powder prepared in step S3,...

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Abstract

The invention discloses a surface treatment method for improving oleophylic and hydrophobic properties of calcium carbonate, which comprises the following steps: S1, selecting limestone transported from a material yard, cleaning, removing impurities, airing stone to remove surface moisture, and crushing the stone by using a crusher to obtain a crushed calcium carbonate; S2, conveying the crushed calcium carbonate obtained in the step S1 into a vertical mill, synchronously adding a grinding aid, and grinding to obtain calcium carbonate fine stone powder; S3, grading the calcium carbonate fine stone powder prepared in the step S2 by using a grading machine to prepare calcium carbonate powder; S4, adding a modifier into the calcium carbonate powder prepared in the step S3, and then stirring to obtain a mixture; and S5, drying, grinding and sieving the mixture prepared in the step S4 to prepare the modified calcium carbonate. The surface treatment method is simple, the production efficiency is high, and the oleophylic and hydrophobic properties of calcium carbonate can be improved.

Description

【Technical field】 [0001] The invention belongs to the technical field of calcium carbonate modification, and in particular relates to a surface treatment method for improving the lipophilic and hydrophobic properties of calcium carbonate. 【Background technique】 [0002] Calcium carbonate is a commonly used inorganic filler, which is widely used in plastics and other fields due to its wide source and low price. However, unmodified calcium carbonate has problems such as surface hydrophilic and oleophobic, high specific surface energy, and easy agglomeration between particles, and its compatibility with plastics is very poor. Therefore, when calcium carbonate is filled into plastics, it is necessary to modify the surface of calcium carbonate to make its surface lipophilic and hydrophobic, enhance the compatibility with plastics, improve the dispersion in plastics, and improve the mechanical properties of plastics, thereby preparing High performance plastic. 【Content of inven...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/04C09C3/08C09C3/10C09C3/12C08K9/04C08K9/06C08K3/26C08L27/06C08L91/06
CPCC08K3/26C08K9/04C08K9/06C08K9/08C08K2003/265C08L27/06C09C1/021C09C3/006C09C3/041C09C3/08C09C3/10C09C3/12C08L91/06
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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