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Continuous preparation method for rubber masterbatch and rubber masterbatch prepared thereby

A technology of rubber masterbatch and manufacturing method, which is applied in the field of rubber, can solve the problems of long process, slow coagulation speed, high energy consumption, etc., and achieve the effect of strong process adaptability

Active Publication Date: 2013-12-04
EVE RUBBER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process described in WO98 / 58985 is carried out in a large-scale turbo dryer with blades at 400 / 1200 revolutions per minute. This method has a slow condensation speed, a long process, and high energy consumption

Method used

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  • Continuous preparation method for rubber masterbatch and rubber masterbatch prepared thereby
  • Continuous preparation method for rubber masterbatch and rubber masterbatch prepared thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Add 56 parts of white carbon black, 5.6 parts of silane coupling agent Si69, 3.5 parts of zinc oxide to 100 parts of 12% cis-polyisoprene n-hexane solution, the rubber / silica / Si69 / normal After the alkane mixture is initially mixed with a blade mixer, the mixture is sprayed into a multi-elbow pipe through a nozzle so that the mixed liquid collides with the pipe wall in the pipe to increase the dispersion of the filler. Then the mixture is continuously added to the grinder for fine dispersion to obtain a finely dispersed mixture, and then the mixture is directly continuously sprayed into water at about 95° C. for coagulation under a pressure of 0.2 MPa. The agglomerated and desolventized rubber particles are filtered and dried to obtain a masterbatch 1.

Embodiment 2

[0095] Add 56 parts of white carbon black, 5.6 parts of silane coupling agent Si69, 3.5 parts of zinc oxide to 100 parts of 12% cis-polyisoprene n-hexane solution, the rubber / silica / Si69 / normal After the alkane mixture is initially mixed with a blade mixer, the mixture is sprayed into a multi-elbow pipe through a nozzle so that the mixed liquid collides with the pipe wall in the pipe to increase the dispersion of the filler. Afterwards, the mixture was continuously added to the mill for fine dispersion to obtain a finely dispersed mixture, and then the mixture was directly sprayed into water at 95° C. under a pressure of 30 MPa for aggregation. The agglomerated and desolventized rubber particles are filtered and dried to obtain a masterbatch 2.

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Abstract

The invention discloses a continuous preparation method of a rubber masterbatch and the rubber masterbatch prepared thereby. The preparation method comprises the following steps: (1), adding a filler into a rubber solution and forming a rubber / filler / solvent mixture by stirring; (2), directly feeding the rubber / filler / solvent mixture in the step (1) into a heating medium with the temperature higher than the boiling point of a solvent, agglomerating the mixture and deswelling when the polarity of the heating medium is different from that of the used solvent, and quickly volatilizing the solvent to form a heating medium-containing mixture of a rubber / filler compound and the solvent; (3), removing the solvent and drying the mixture to obtain the rubber / filler masterbatch. The preparation method does not have special requirements on rubber and the filler and is wider in application range; production equipment and process are simple, continuous, efficient, low in energy consumption, low in manpower and lower in cost; the masterbatch prepared by the method is very superior in processing, physical mechanical performance and product quality.

Description

Technical field [0001] The invention relates to the field of rubber, in particular to a continuous manufacturing method of a rubber masterbatch and a rubber masterbatch prepared by the method. Background technique [0002] In the rubber / filler / additive / solvent system, the coagulation of rubber / filler / additive from the solvent is an important step in the manufacture of rubber / filler / additive masterbatch. The process described in WO98 / 58985 is a large-scale bladed worm wheel dryer in a 400 / 1200 rpm device. This method has a slower coagulation speed, a long process, and high energy consumption. The present invention relates to several high-speed mixing / condensation methods, in which the condensing medium includes gas, especially high-temperature gas and liquid, and rubber / filler / additive mixtures are mixed instantaneously in the state of high-energy turbulent flow. The difference in performance, the rubber / filler / additive in the rubber / filler / additive / solvent mixture will desolvent...

Claims

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Application Information

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IPC IPC(8): B29B7/30B29B7/58C08J3/22
CPCB29B7/30B29B7/58B29B7/7495B29B7/90C08J3/12C08J3/212C08J2321/00
Inventor 王梦蛟宋建军戴德盈
Owner EVE RUBBER RES INST
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