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Superfine composite modified kaoline powder, preparation and use thereof

A technology of kaolin powder and compound modification, which is applied in the direction of fibrous fillers, coatings, latex paints, etc., can solve the problems of low powder dispersion and surface activity, poor processing fluidity, and affect appearance requirements, etc., to overcome agglomeration Tendency, reduced surface energy, good surface activity and dispersibility effects

Inactive Publication Date: 2009-02-25
芜湖同达新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared powder has low dispersibility and surface activity, and has poor compatibility with other organic materials and poor processing fluidity when used, which affects the comprehensiveness of the product to a certain extent while filling and increasing. Application performance, or to some extent affect the appearance requirements of the product

Method used

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  • Superfine composite modified kaoline powder, preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Proportion:

[0024] Calcined kaolin (d50: 0.8um~1um) 75 parts by weight

[0025] Wollastonite (d50: 1.5um~2um) 20 parts by weight

[0026] 1.5 parts by weight of silane coupling agent

[0027] 1 part by weight of stearic acid

[0028] The model of the silane coupling agent is KH-580, produced by Nanjing Shuguang Company.

[0029] The model of described stearic acid is 1801.

[0030] Its preparation method is:

[0031] Add calcined kaolin (d50: 0.8um ~ 1um) and wollastonite (d50: 1.5um ~ 2um) into the high-speed mixer in turn, stir at high speed and heat up. When the temperature reaches 100°C, keep it warm for 7 minutes, and then add the prepared For a good silane coupling agent, heat up to 155°C, keep warm for 6 minutes, cool the material to 95°C, transfer the material to a three-roller continuous modification machine, add measured stearic acid for further modification, and discharge the material .

Embodiment 2

[0033] Proportion:

[0034] Calcined kaolin (d50: 0.8um~1um) 80 parts by weight

[0035] Wollastonite (d50: 1.5um~2um) 15 parts by weight

[0036] 1.2 parts by weight of silane coupling agent

[0037] 1.1 parts by weight of stearic acid

[0038] As mentioned, the model of the silane coupling agent is KH-580 produced by Nanjing Shuguang Company.

[0039] The model of described stearic acid is 1801.

[0040] Its preparation method is:

[0041] Add calcined kaolin (d50: 0.8um ~ 1um) and wollastonite (d50: 1.5um ~ 2um) to the high-speed mixer in turn, stir at high speed and heat up. When the temperature reaches 100°C, keep it warm for 8 minutes, and then add the prepared For a good silane coupling agent, raise the temperature to 152°C, keep it warm for 8 minutes, cool the material to 98°C, transfer the material to a three-roll continuous modification machine, and then measure the stearic acid for further modification, and then discharge the material.

Embodiment 3

[0043] Proportion:

[0044] Calcined kaolin (d50: 0.8um~1um) 85 parts by weight

[0045] Wollastonite (d50: 1.5um~2um) 10 parts by weight

[0046] 2 parts by weight of silane coupling agent

[0047] Stearic acid 1.2 parts by weight

[0048] The model of the silane coupling agent is KH-580, produced by Nanjing Shuguang Company.

[0049] The model of described stearic acid is 1801.

[0050] Its preparation method is:

[0051] Add calcined kaolin (d50: 0.8um ~ 1um) and wollastonite (d50: 1.5um ~ 2um) to the high-speed mixer in turn, stir at high speed and heat up. When the temperature reaches 108°C, keep it warm for 8 minutes, and then add the measured For a good titanate coupling agent, heat up to 150°C, keep warm for 10 minutes, cool the material to 100°C, transfer the material to a three-roller continuous modification machine, and then measure the stearic acid for further modification. Can.

[0052] The particle size of the present invention is detected according to the...

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Abstract

The invention discloses superfine composite modified kaolin powder, a preparation method and the application thereof. The powder consists of the following components by weight portion: 75-85 portions of calcined kaolin, 15-20 portions of wollastonite, 1-2 portions of silane coupler, and 0.8-1.2 portions of stearic acid. The preparation method is as follows: the wollastonite is added to the calcined kaolin powder, heated to the temperature of 100-110 DEG C, kept warm for 5-10min, and then added with the coupler, heated to the temperature of 145-155 DEG C, kept warm for 6-10min, then cooled to the temperature of 95-105 DEG C, added with the stearic acid to obtain the powder. The powder is applied to tread rubber of light car tires, water paint for building exterior wall and PE shed film material. Compared with the prior art, the superfine composite modified kaolin powder has good surface activity and dispersibility, good compatibility with other materials, excellent processing flowability, and can better meet the requirements of composite materials for high strength and high performance.

Description

technical field [0001] The invention relates to an ultrafine composite modified powder, a preparation method and its application, in particular to an ultrafine composite modified kaolin powder, a preparation method and its application. technical background [0002] Kaolin is an important mineral raw material, which is widely used in rubber, paint, plastic and other fields. Because kaolin is a layered silicate mineral, the surface of the superfine powder contains carboxyl groups and oxygen-containing groups, which has a certain acidity, and calcined kaolin is especially serious. Therefore, it is especially used in the fields of rubber, coatings, and plastics. It is necessary to carry out better modification treatment on ultrafine kaolin powder. The kaolin powder material treated by compound modification can effectively improve the physical and mechanical properties of some aspects of the product or can endow paint, rubber, plastic and other products with some new functions. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C08K9/04C08L21/00C09D7/12C09D5/02C08L23/06
Inventor 陈永辉卜枝英
Owner 芜湖同达新材料科技有限公司
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