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

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

Active Publication Date: 2018-07-27
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 manufacturing method of rubber masterbatch and rubber masterbatch prepared by the method
  • Continuous manufacturing method of rubber masterbatch and rubber masterbatch prepared by the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] In the hexane solution containing 13% isoamyl 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 based on 100 parts of rubber. Part of stearic acid was mixed into the isoamyl gum solution, and after mixing, it was injected into a three-inlet straight-tube mixing agglomerator through one inlet at a pressure of 30 MPa, and at the same time, nitrogen at a temperature of 120°C was passed through the other at a pressure of 1 MPa. 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 powdery substance, which is then dried to become a masterbatch 1.

[0122] After the masterbatch 1 is wrapped on a roll on the freezer, add 2 parts of accelerator CZ, 1 part of accelerator DPG and 1.6 parts of sulfur, and then pass the sheet thinly. After being parked for 8 hours, it is vul...

Embodiment 2

[0124] In a hexane solution containing 13% isoamyl gum, add 2 parts carbon black, 30 parts white carbon black, 4 parts silane coupling agent Si69, 2 parts antioxidant 4020, 3.5 parts zinc oxide, 2 parts based on 100 parts of rubber. Part of stearic acid is mixed into the isoamyl gum solution. After initial mixing with blade mixer, fine mixing with curved tube disperser and power dispersing mill, it passes through two of the four inlets at a pressure of 30MPa at a pressure of 30MPa Inject into the cylindrical conical agglomerator, and at the same time, the temperature of 90-100 ℃, containing 15% carbon black N234 water slurry through the other two inlets under the pressure of 30MPa through the agglomerator, the carbon black water slurry injection speed is adjusted to The total carbon black content of the isoamyl gum / carbon black / white carbon black / additive mixture is 30 parts. The resulting mixture is sprayed into the dryer through a nozzle outlet of the agglomerator to form a s...

Embodiment 3

[0127] A 20% rubber solution was prepared by dissolving 70 parts of sol-polymerized styrene butadiene and 30 parts of butadiene rubber in hexane to prepare a 20% rubber solution, and then 78 parts of white carbon black based on 100 parts of rubber, 6.4 parts of silane coupling agent Si69, 28 Part oil, 2 parts antioxidant 4020, 3.5 parts zinc oxide, 2 parts stearic acid, 2 parts paraffin wax 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 dynamic dispersing mill, and then injected into the cone-shaped agglomerator through two of the four inlets under a pressure of 30MPa, and injected from the other two inlets at the same time With 0.5MPa water vapor, the resulting solid / liquid / gas three-phase mixture is sprayed into the dryer through a nozzle outlet of the condenser to form a solid powder material, which is then dried to become a masterbatch 3.

[0128] After the m...

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Abstract

The continuous production method of rubber masterbatch and the rubber masterbatch prepared by the method of the present invention disclose a continuous production method of rubber masterbatch, which comprises the following steps: step 1) adding filler to In the rubber solution, the rubber / filler / solvent mixture is formed by stirring; step 2) the rubber / filler / solvent mixture in step 1) is sent into the coagulator, and mixed with nitrogen, water vapor, filler water slurry and One or more fluid phases in the oil are contacted and mixed to coagulate to obtain a mixture of rubber / filler compound and solvent; step 3) removing the solvent and drying the mixture to obtain a rubber / filler masterbatch. The present invention also relates to a masterbatch prepared by the above method and a rubber product prepared by using the masterbatch. Compared with the agglomeration technology in the existing wet mixing, the invention has no special requirements on rubber and filler, and has a wide application range. In addition, the production process is continuous, efficient, low energy consumption, and less labor, so the cost is low. At the same time, the masterbatch prepared by this method is excellent in processing performance, physical and mechanical properties, 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 mixers / condensers, in which the condensing medium, including gas, especially high-temperature gas and liquid, and rubber / filler / additive mixture are mixed instantaneously in the state of high-energy turbulence, due to the high temperature of the gas The effect and the difference in polarity between the liquid medium and the solvent, the rub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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