Continuous manufacturing method of rubber masterbatch and rubber masterbatch prepared by same

A technology of rubber masterbatch and manufacturing method, which is applied in the field of rubber, can solve the problems of slow coagulation speed, high energy consumption, and long process, and achieve the effects of uniform mixing and coagulation, fast speed and wide application range

Active Publication Date: 2013-05-22
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 ...

Method used

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  • Continuous manufacturing method of rubber masterbatch and rubber masterbatch prepared by same
  • Continuous manufacturing method of rubber masterbatch and rubber masterbatch prepared by same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] In the hexane solution containing 13% isoprene gum, add 30 parts of carbon black, 30 parts of white carbon black, 4 parts of silane coupling agent Si69, 2 parts of antioxidant 4020, 3.5 parts of zinc oxide, 2 parts of rubber in 100 parts of rubber. Parts of stearic acid are mixed into the isoamyl gum solution, and after mixing, they are injected into a three-inlet straight-tube mixing coagulator under a pressure of 30MPa through one inlet, and at the same time, nitrogen gas with a temperature of 120°C is passed through another inlet under a pressure of 1MPa. The two inlets lead into the agglomerator, and the resulting mixture is sprayed into the dryer through a nozzle outlet of the agglomerator to form a solid powder substance, which is then dried to become the master batch 1.

[0122] After wrapping the masterbatch 1 on the unfreezing machine, add 2 parts of accelerator CZ, 1 part of accelerator DPG and 1.6 parts of sulfur, and then pass through the next sheet. After pa...

Embodiment 2

[0124] In the hexane solution containing 13% isoprene gum, add 2 parts of carbon black, 30 parts of white carbon black, 4 parts of silane coupling agent Si69, 2 parts of antioxidant 4020, 3.5 parts of zinc oxide, 2 parts of rubber in 100 parts of rubber. Mix one part of stearic acid into the isoamyl gum solution, and then pass through two of the four inlets under the pressure of 30MPa after the initial mixing of the blade mixer, the fine mixing of the curved tube disperser and the fine mixing of the power disperser. Inject into the cylinder cone type coagulator, and at the same time, the temperature is 90-100 ℃, and the N234 water slurry containing 15% carbon black is passed through the other two inlets under the pressure of 30MPa in the coagulator, and the injection speed of the carbon black slurry is adjusted to the same The total carbon black content of the isoprene gum / carbon black / silica black / additive mixture is 30 parts after mixing. The resulting mixture is sprayed int...

Embodiment 3

[0127] 70 parts of solution-polymerized styrene-butadiene and 30 parts of butadiene rubber are dissolved in hexane to obtain a 20% rubber solution, and then 78 parts of white carbon black, 6.4 parts of silane coupling agent Si69, 28 parts based on 100 parts of rubber 1 part of oil, 2 parts of anti-aging agent 4020, 3.5 parts of zinc oxide, 2 parts of stearic acid, and 2 parts of paraffin are mixed into the rubber solution to form a mixture. The mixture is initially mixed by a blade mixer, finely mixed by a curved tube disperser, and finely mixed by a power disperser mill. After that, it is injected into the cylinder-cone agglomerator through two of the four inlets under a pressure of 30 MPa, and injected from the other two inlets at the same time. 0.5MPa water vapor, the resulting solid / liquid / gas three-phase mixture is sprayed into the dryer through a nozzle outlet of the coalescer to form a solid powder substance, which is then dried to become the masterbatch 3.

[0128] Aft...

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Abstract

The invention relates to a continuous manufacturing method of rubber masterbatch and rubber masterbatch prepared by the continuous manufacturing method. The invention discloses the continuous manufacturing method of rubber masterbatch. The continuous manufacturing method of rubber masterbatch comprises the following steps of: 1) adding stuffing into rubber liquor, and stirring to form a rubber/stuffing/solvent mixture; 2) feeding the rubber/stuffing/solvent mixture in step 1) to a flocculator, wherein the rubber/stuffing/solvent mixture is contacted and mixed with one or more of nitrogen, steam, stuffing aqueous slurry and oil, and flocculating to obtain a mixture of a rubber/stuffing compound and the solvent; and 3) removing the solvent and drying the mixture to obtain rubber/stuffing masterbatch. The invention further relates to masterbatch prepared by the method and a rubber product prepared by the masterbatch. Compared with the flocculating technology in current wet-method mixing, as no special requirements are posed to rubber and stuffing, the application range is wider. In addition, the manufacturing method is continuous in production process, efficient, low in energy consumption and less in labor, so that the cost is lower. Meanwhile, masterbatch prepared by the method is quite excellent in processability, physical and mechanical properties and product quality.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a continuous production method of rubber masterbatch and the rubber masterbatch prepared by the method. Background technique [0002] In a rubber / filler / additive / solvent system, the coacervation of rubber / filler / additive from solvent is an important step in the manufacture of rubber / filler / additive masterbatch. This process described in WO98 / 58985 is carried out in a device with 400 / 1200 revolutions per minute by a large-scale turbo dryer with blades. The coagulation speed of this method is relatively slow, the process is long, and the energy consumption is high. The present invention relates to several high-speed mixers / coalescers in which condensed media, including gases, especially high-temperature gases and liquids, are mixed instantaneously with rubber / filler / additive mixtures in a state of high-energy turbulence, due to the high temperature of the gases Effect and the difference in t...

Claims

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Application Information

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IPC IPC(8): C08J3/00C08J3/22C08L9/00C08L9/06C08K13/02C08K3/04C08K3/36C08K3/22C08K5/09
Inventor 王梦蛟宋建军戴德盈
Owner EVE RUBBER RES INST
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