Powder rubber preparation method

A powder rubber and formulation technology, which is applied in the field of powder rubber preparation, can solve the problems of high production efficiency, low vulcanization performance of powder rubber, prolonging the scorch time, etc., and achieve the improvement of the peak torque of the vulcanization curve, the improvement of vulcanization performance, and the shortening of scorch the effect of time

Inactive Publication Date: 2015-07-22
ANHUI TONGFENG RUBBER & PLASTIC IND
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Powdered rubber has the advantages of easy metering, automatic and continuous processing, shortened mixing time and prolonged scorch time, etc. In the field of polymer modification and polymer modification, a variety of preparation methods have been formed based on block rubber (raw rubber block and vulcanizing agent), latex, glue liquid and suspension, and based on powder forming technology and isolation technology. The drying method is the main method for forming latex and glue into powder. The powder rubber particles prepared are small and round. The application number is CN201310263094.7. A preparation method of powder rubber is disclosed, that is, the release agent and the coagulant aqueous solution are added to the In an organic solvent, at ro

Method used

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Examples

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Comparison scheme
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Example Embodiment

[0012] Example 1:

[0013] A method for preparing powder rubber includes the following steps:

[0014] (1) Ball milling: Take 52g of granulated carbon black, add 310g of water, and add corresponding mass of sodium dodecylbenzene sulfonate, zinc oxide, stearic acid, sulfur, accelerator CZ and DM according to the formula, and put it in In the ball mill, the carbon black / milling ball mass ratio is 1 / 5, the ball mill speed is set to 365r / min, the time is 240min, and the direction is changed every 28min. The carbon black suspension after ball milling is added to 500g with water and ultrasonic treatment is 1-2h , Wherein the formula is natural latex 100Phr, carbon black 52Phr, sodium dodecylbenzene sulfonate 7Phr, zinc oxide 6Phr, stearic acid 3Phr, sulfur 1.6Phr, accelerator CZ1.3 Phr and accelerator DM0.1 Phr;

[0015] (2) Stirring: Take 169g of natural rubber latex, dilute with 1050mL of water, stir on a booster electric stirrer, add the suspension of carbon black while stirring, and...

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PUM

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Abstract

The invention discloses a powder rubber preparation method, and relates to the technical field of rubber preparation. The powder rubber preparation method comprises three process steps of performing ball milling, stirring and performing spray-drying. According to the method disclosed by the invention, the hydrophilicity of carbon black can be improved through wet ball milling processing; sodium dodecyl benzene sulfonate serving as a surfactant is favorable to the diffusion of the carbon black in natural latex; the carbon black and the natural latex are mixed and are fully stirred, so that a carbon black/natural latex suspension in a stable state is favorably prepared; under similar conditions, compared with mechanically mixed rubber material, the curability of the powder rubber prepared by the spray-drying method is greatly improved, the peak value of the torque of a vulcanization curve is improved by about one time, the scorch time in rubber preparation can be effectively shortened, and the preparation process is simple.

Description

technical field [0001] The invention relates to the technical field of rubber preparation, in particular to a method for preparing powdered rubber. Background technique [0002] Powdered rubber has the advantages of easy metering, automatic and continuous processing, shortened mixing time and prolonged scorch time, etc. In the field of polymer modification and polymer modification, a variety of preparation methods have been formed based on block rubber (raw rubber block and vulcanizing agent), latex, glue liquid and suspension, and based on powder forming technology and isolation technology. The drying method is the main method for forming latex and glue into powder. The powder rubber particles prepared are small and round. The application number is CN201310263094.7. A preparation method of powder rubber is disclosed, that is, the release agent and the coagulant aqueous solution are added to the In an organic solvent, at room temperature, fully stir to form a dispersion sys...

Claims

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Application Information

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IPC IPC(8): C08L7/02C08K13/06C08K9/04C08K9/00C08K3/04C08K3/22C08K3/06C08K5/09C08J3/12
CPCC08J3/12C08K3/04C08K3/06C08K3/22C08K5/09C08K5/42C08K5/47C08K9/00C08K9/04C08K13/06C08K2003/2296C08L7/02
Inventor 项宗武
Owner ANHUI TONGFENG RUBBER & PLASTIC IND
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