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Preparation method of olefin rubber/filler blend vulcanized rubber

A technology of olefinic and vulcanized rubber, which is applied in the field of preparation of olefinic rubber and olefinic rubber/filler blended vulcanized rubber, which can solve the problems of short storage time of rubber latex, short storage time of solid rubber, easy deterioration and precipitation, etc. , to achieve the effect of excellent comprehensive performance of the product, improvement of physical and mechanical properties, and short drying time

Active Publication Date: 2017-05-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can improve the dispersion of fillers in rubber, there are many steps in the preparation of rubber / filler blends, which takes a long time and consumes a lot of energy in the drying process; in addition, the storage time of rubber latex is short, and it is prone to deterioration and precipitation, while solid Rubber is less likely to have problems such as short storage time and deterioration

Method used

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  • Preparation method of olefin rubber/filler blend vulcanized rubber
  • Preparation method of olefin rubber/filler blend vulcanized rubber
  • Preparation method of olefin rubber/filler blend vulcanized rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In terms of mass percentage, the consumption of each raw material is as follows:

[0038]

[0039] First add Zhongchao wear-resistant carbon black (N220) into deionized water (the mass ratio of N220 carbon black to deionized water is 1:5), then add sodium lauryl sulfate, stir mechanically for 180min, and rotate at a speed of 400r min ‐1 , Ultrasonic dispersion for 30min, power 1600w, to obtain N220 carbon black pre-dispersion.

[0040] The natural rubber raw rubber was masticated with a rubber internal mixer at a temperature of 40 °C and a rotor speed of 40 r min ‐1 , masticating for 5 minutes, adding styrene-butadiene rubber and butadiene rubber, mixing for 2 minutes, setting the temperature of the rubber internal mixer to 110 ° C, and the rotor speed to 40 r min ‐1 , add N220 carbon black pre-dispersion from the feeding port of the internal mixer, and the adding time is 5 minutes. During this process, a large amount of water vapor appears above the internal mixer....

Embodiment 2

[0042] In terms of mass percentage, the consumption of each raw material is as follows:

[0043]

[0044] First add Zhongchao wear-resistant carbon black (N220) into deionized water (the mass ratio of N220 carbon black to deionized water is 1:30), then add sodium lauryl sulfate, stir mechanically for 30min, and rotate at a speed of 3000r min ‐1 , Ultrasonic dispersion for 180min, power 120w, to obtain N220 carbon black pre-dispersion.

[0045] The natural rubber raw rubber was masticated with a rubber internal mixer at a temperature of 40 °C and a rotor speed of 40 r min ‐1 , masticating for 5 minutes, adding styrene-butadiene rubber and butadiene rubber, mixing for 2 minutes, setting the temperature of the rubber internal mixer to 110 ° C, and the rotor speed to 40 r min ‐1 , add N220 carbon black pre-dispersion from the feeding port of the internal mixer, and the adding time is 10 minutes. During this process, a large amount of water vapor appears above the internal mixe...

Embodiment 3

[0048] In terms of mass percentage, the consumption of each raw material is as follows:

[0049]

[0050]

[0051] First add Zhongchao wear-resistant carbon black (N220) into deionized water (the mass ratio of N220 carbon black to deionized water is 1:30), then add surfactant octylphenol polyoxyethylene ether, stir mechanically for 30min, and rotate at 3000r min ‐1 , Ultrasonic dispersion for 180min, power 120w, to obtain N220 carbon black pre-dispersion.

[0052] The natural rubber raw rubber was masticated with a rubber internal mixer at a temperature of 40 °C and a rotor speed of 40 r min ‐1 , masticating for 5 minutes, adding styrene-butadiene rubber and butadiene rubber, mixing for 2 minutes, setting the temperature of the rubber internal mixer to 110 ° C, and the rotor speed to 40 r min ‐1 , add N220 carbon black pre-dispersion from the feeding port, and the adding time is 15 minutes. During this process, a large amount of water vapor appears above the internal m...

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Abstract

The invention discloses a preparation method of olefin rubber / filler blend vulcanized rubber. The method comprises the following steps: preparing a filler predispersion solution; plasticizing unvulcanized natural rubber by a rubber Banbury mixer, mixing with styrene-butadiene rubber and cis-1,4-polybutadiene rubber, increasing the temperature of the Banbury mixer to 110-160 DEG C, adding the filler predispersion solution into the rubber Banbury mixer, compounding, evaporating to remove water, and drying with hot air to obtain an olefin rubber / filler mixture; adding zinc oxide, stearic acid, a vulcanizing agent, an accelerator and an anti-aging agent into a rubber open mill or Banbury mixer, compounding uniformly, discharging, and standing to obtain the olefin rubber / filler compounded rubber; and vulcanizing the olefin rubber / filler compounded rubber on a flat vulcanizing machine to obtain the olefin rubber / filler blend vulcanized rubber. The method has the advantages of simple technique, no solvent pollution and no flying dust, is green and environment-friendly, and can be widely used for mixing multiple fillers and rubber.

Description

technical field [0001] The invention relates to olefin rubber, in particular to a preparation method of olefin rubber / filler blended vulcanized rubber, which belongs to the technical field of processing and modification of rubber composite materials. Background technique [0002] The traditional rubber mixing method adopts the mechanical blending method. The main problem of this method is that fillers such as carbon black and white carbon black are relatively flying during the rubber mixing process, which is easy to pollute the environment and equipment. In addition, the dispersion state of a large amount of fillers in the rubber matrix is ​​not good, resulting in poor or unstable mechanical properties of the blend. During the mixing process, the filling amount of the filler is too much, which will cause serious heat generation in the rubber mixing process and easily cause gelation. [0003] The emulsion co-precipitation method is to mix the filler pre-dispersion liquid wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/06C08L9/00C08K13/06C08K9/04C08K3/04C08K3/22C08K5/09C08K5/47B29B7/82B29B7/94
CPCB29B7/82B29B7/94C08L7/00C08L2205/02C08L2205/03C08L9/06C08L9/00C08K13/06C08K9/04C08K9/08C08K3/04C08K2003/2296C08K5/09C08K5/47
Inventor 郭建华熊俊彬曾幸荣
Owner SOUTH CHINA UNIV OF TECH
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