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Method for preparing modified calcined superfine kaoline filler

An ultra-fine kaolin and filler technology, which is applied in fibrous fillers, chemical instruments and methods, inorganic pigment treatment, etc., can solve the problem of volume resistivity not reaching first-class products, etc., and achieve products with excellent electrical properties, simple process, Preparing convenient effects

Inactive Publication Date: 2006-03-29
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The volume resistivity of the above three wire and cable materials has not reached the index of the first-class product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In the first step, 120g of raw materials were calcined at 600°C for 3h;

[0024] In the second step, add 2g of aluminum titanate to the slurry, keep at 90°C, and stir for 2 hours;

[0025] In the third step, 102 g of the product was obtained, which was a modified calcined superfine kaolin filler.

[0026] Example 1 product application: After adding 6.4%wt of the above-mentioned filler in the PVC wire and cable material, the volume resistivity of the wire and cable material is 3.18×10 12 Ω m exceeds the requirements of first-class products.

Embodiment 2

[0028] In the first step, 120g of raw materials were calcined at 680°C for 2h;

[0029] In the second step, add 3.5g of aluminum titanate to the slurry, keep at 85°C, and stir for 1.5h;

[0030] In the third step, 103.5 g of the product was obtained, which was a modified calcined superfine kaolin filler.

[0031] Example 2 product application: After adding 12.0%wt of the above-mentioned filler in the PVC wire and cable material, the volume resistivity of the wire and cable material is 3.10×10 12 Ω m, exceeding the requirements of first-class products.

Embodiment 3

[0033] In the first step, 120g of raw materials are calcined at 750°C for 1h;

[0034] In the second step, add 5g of aluminum titanate to the slurry, keep at 80°C, and stir for 1 hour;

[0035] In the third step, 105 g of the product was obtained, which was a modified calcined superfine kaolin filler.

[0036] Example 3 product application: After adding 17.0%wt of the above-mentioned filler in the PVC wire and cable material, the volume resistivity of the wire and cable material is 2.10×10 12 Ω m, exceeding the requirements of first-class products.

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Abstract

The invention is a manufacturing method of modified calcuination superfine kaolinsol filler, which beongs to the manufacturing technique field of inorganic material, it uses superfine slice kaolinsol or superfine kalolinsol as the material, through low temperature calcuination and organic modified process, the filler can be produced. It has the advantage of simple process, convenient in manufacturing, the temperature is low, and the electricity performance of the product is good. The product applies to PVC wire and cable; it has excellent electricity insulation. It can decrease the cost of the PVC wire and cable.

Description

technical field [0001] The invention relates to a preparation method of modified calcined superfine kaolin filler, which belongs to the technical field of preparation of inorganic materials. Background technique [0002] Kaolin is a very important non-metallic mineral. With the development of science and technology, its application is becoming more and more extensive. Mainly used in papermaking, plastics, rubber, ceramics, pigments, building materials and other industries. The yield and comprehensive economic benefits of ultrafine kaolin can be improved by exfoliation or ball milling. Patent No. 03115823.4 proposes a preparation method of ultrafine kaolin lamella material. This method processes kaolin through an exfoliation process, and can prepare ultrafine lamella kaolin with excellent properties. In addition, ultra-fine kaolin can also be produced by processing kaolin through ball milling, but its kaolin lamella structure is destroyed. [0003] Ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C3/00C09C1/28
Inventor 刘志强孙红单永奎何鸣元
Owner EAST CHINA NORMAL UNIV