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Method for rapid coagulation preparation of kaolin/rubber nanometer composite material

A technology of rubber nano-composite materials, which is applied in the field of rapid coagulation to prepare kaolin/rubber nano-composite materials, can solve the problems of difficulty in industrialization and high requirements for production equipment

Active Publication Date: 2019-08-16
ZAOZHUANG SANXING ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent 200880114142.3, patent 98811684.7 and patent 201210390552.9 have high requirements for production equipment, and there are great difficulties in industrialization

Method used

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  • Method for rapid coagulation preparation of kaolin/rubber nanometer composite material
  • Method for rapid coagulation preparation of kaolin/rubber nanometer composite material
  • Method for rapid coagulation preparation of kaolin/rubber nanometer composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] 1) Mix the suspension of 50 parts of kaolin with the emulsion of 100 parts of styrene-butadiene rubber, stir evenly to obtain a kaolin / rubber mixture; wherein the solid content of the kaolin suspension is 25%, and the solid content of the emulsion of styrene-butadiene rubber latex is 20% ;

[0064] 2) Using 5% HCl aqueous solution as a coagulant, adding a coagulant to the kaolin / rubber mixture obtained in step 1) until the mixed system is completely coagulated to form granular coagulants;

[0065] 3) Washing, drying and dehydrating the granular aggregates to form aggregated dry matter; the ratio of the adding speed of the coagulant to the amount of the aggregated dry matter is 0.1ml / min·g;

[0066] 4) Add a vulcanization system to the coagulated dry product according to the conventional process, the formula is 3 parts of ZnO, 1 part of stearic acid, 1 part of NS, 2 parts of sulfur to obtain a compound of modified clay and styrene-butadiene rubber, and then heat it at 15...

Embodiment 2

[0068] 1) The suspension of 50 parts of kaolin is mixed with the emulsion of 100 parts of styrene-butadiene rubber, and stirred evenly to obtain a kaolin / rubber mixture; wherein the solid content of the kaolin suspension is 25%, and the solid content of the emulsion of styrene-butadiene rubber is 20%. %;

[0069] 2) Using 5% HCl aqueous solution as a coagulant, adding a coagulant to the kaolin / rubber mixture obtained in step 1) until the mixed system is completely coagulated to form granular coagulants;

[0070] 3) Washing, drying and dehydrating the granular aggregates to form aggregated dry matter; the drying temperature is 60°C, and the ratio of the adding speed of the coagulant to the amount of the aggregated dry matter is 0.1ml / min·g;

[0071] 4) Add a vulcanization system to the coagulated dry product according to the conventional process, the formula is 3 parts of ZnO, 1 part of stearic acid, 1 part of NS, 2 parts of sulfur to obtain a compound of modified clay and styr...

Embodiment 3

[0073] 1) The suspension of 50 parts of kaolin is mixed with the emulsion of 100 parts of styrene-butadiene rubber, and stirred evenly to obtain a kaolin / rubber mixture; wherein the solid content of the kaolin suspension is 25%, and the solid content of the emulsion of styrene-butadiene rubber is 20%. %. ;

[0074] 2) The KAl(SO 4 ) 2 The aqueous solution is used as a coagulant, and the coagulant is added to the kaolin / rubber mixture obtained in step 1) until the mixed system is completely coagulated to form a granular coagulant;

[0075] 3) Washing, drying and dehydrating the granular aggregates to form aggregated dry matter; the drying temperature is 70°C, and the ratio of the adding speed of the coagulant to the amount of the aggregated dry matter is 0.1ml / min·g;

[0076] 4) Add a vulcanization system to the coagulated dry product according to the conventional process, the formula is 3 parts of ZnO, 1 part of stearic acid, 1 part of NS, 2 parts of sulfur to obtain a comp...

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Abstract

The invention belongs to the field of preparation of clay / rubber nanometer composite materials, and particularly relates to a method for rapid coagulation preparation of a kaolin / rubber nanometer composite material. The method comprises: 1) mixing a rubber emulsion and a kaolin suspension liquid, and stirring uniformly; 2) adding a coagulation agent solution to the obtained kaolin / rubber mixing solution to form a granular agglomerate; 3) washing the granular agglomerate, and carrying out drying dehydrating to form a coagulated dried product; and 4) mixing and vulcanizing the coagulated dried product to obtain the kaolin / rubber nanometer composite material. According to the present invention, the kaolin is subjected to nano-scale dispersion in the rubber matrix, such that the prepared composite material has characteristics of good mechanical property, good dynamic mechanical property and good air-tight property.

Description

technical field [0001] The invention belongs to the field of preparation of clay / rubber nano-composite materials, in particular to a preparation method for rapid aggregation of kaolin / rubber nano-composite materials. Background technique [0002] Clay has been widely used in the field of polymer fillers because of its natural nanometer size, abundant reserves, and low price. At present, the preparation techniques of clay / polymer nanocomposites mainly include mechanical blending, in-situ blending, solution blending and emulsion blending. Different preparation processes will significantly affect the dispersion form of nanoclay powder in the polymer matrix, and further affect its application performance. [0003] Mechanical blending is the most commonly used blending process in polymer processing, especially in rubber preparation. Usually, two-roll mixers or internal mixers are used to mix molten polymers, fillers, and other ingredients under strong shear force. Under the eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L7/00C08K13/02C08K3/34C08K3/22C08K5/09
CPCC08K3/22C08K3/346C08K5/09C08K13/02C08K2003/2296C08K2201/011C08L9/06C08L7/00
Inventor 吉雷波张学法张士龙曹伟华振
Owner ZAOZHUANG SANXING ADVANCED MATERIALS