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Elastomeric composite body

An elastic composite and modification technology, applied in the field of elastic composite, to achieve the effect of low hardness, superior dynamic mechanical properties, and good strength and elongation properties

Inactive Publication Date: 2017-03-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this system characterized by organic solvents and white carbon black, it will have more and greater challenges to realize liquid phase dispersion mixing and make composites

Method used

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preparation example Construction

[0044] The present invention also provides a method for preparing the elastic composite, which is characterized in that it is prepared by a liquid-phase mixing and dispersing process, and the steps include: 1) making a modified white carbon black grinding slurry or carbon black in a non-polar organic solvent Grinding slurry; 2) Dispersing and mixing filler slurry or filler and rubber glue under high-energy shearing in proportion; 3) Dry removing the solvent from the uniformly dispersed composite slurry glue under dynamic conditions; 4) Removing The complex of solvents is sheared, kneaded and dried to obtain a product.

[0045] The solvent used in the filler slurry is non-polar organic solvents such as aliphatic hydrocarbons, alicyclic hydrocarbons, and aromatic hydrocarbons.

[0046] The solvent used in the rubber solution is non-polar organic solvents such as aliphatic hydrocarbons, alicyclic hydrocarbons, and aromatic hydrocarbons.

[0047] In step 1), if the filler is whit...

Embodiment 1

[0060] According to the preparation method of modified silica disclosed in patent application number 201410724713.2, a modified silica slurry with a silica aggregate particle size of 100nm-5μm was obtained, and the solid content was 5%wt.

[0061] In the high-energy disperser, 13.5kg of the above-mentioned modified white carbon black slurry is mixed with 6.8kg of concentration of 20%wt solution-polymerized styrene-butadiene rubber glue, wherein the ratio of the two solid contents is, rubber: white carbon black= 100:50. The high-energy disperser disperses the white carbon black evenly among the rubber molecules while grinding it to obtain a composite mixed liquid.

[0062] The composite mixed liquid is sent to the devolatilization extruder for solvent removal, and the temperature range of the eight blocks on the devolatilization extruder is set to 40-100°C, and the screw speed is 100 rpm. The compound mixed liquid is obtained through the extruder, and the volatile matter conte...

Embodiment 2

[0065] According to the preparation method of modified silica disclosed in patent application number 201410724713.2, a modified silica slurry with a silica aggregate particle size of 100nm-5μm was obtained, and the solid content was 10%wt.

[0066] In a high-energy disperser, mix 9kg of the above-mentioned modified silica slurry with 22.5kg of 5%wt solution-polymerized styrene-butadiene rubber glue, wherein the ratio of the two solid contents is, rubber: silica=100 :80. The high-energy disperser disperses the white carbon black evenly among the rubber molecules while grinding it to obtain a composite mixed liquid.

[0067] The composite mixed liquid is sent to the devolatilization extruder for solvent removal, and the temperature range of the eight blocks on the devolatilization extruder is set to 40-100°C, and the screw speed is 150 rpm. The compound mixed liquid is obtained through the extruder, and the volatile matter content is less than 1%.

[0068] The compound is knea...

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Abstract

The invention relates to an elastomeric composite body, which comprises a solution polymerization synthesis rubber and a filler, wherein the filler is modified white carbon black or carbon black, a ration of the rubber to the filler is 100:30-110, and the filler aggregate particle size is 100 nm-10 [mu]m. The preparation method comprises: (1) in a non-polar organic solvent, preparing a modified white carbon black grinding slurry or carbon black grinding slurry, wherein the modified white carbon black grinding slurry or carbon black grinding slurry is recorded as the filler slurry, and the modified white carbon black or carbon black is recorded as the filler; (2) carrying out dispersed mixing on the filler slurry or filler and the rubber slurry according to a certain ratio under high energy shearing to form a composite body slurry rubber liquid; (3) dynamically removing the solvent from the uniformly dispersed and mixed composite body slurry rubber liquid through a dry method; and (4) carrying out shearing kneading drying on the solvent-removed composite body to obtain the product.

Description

technical field [0001] The invention relates to an elastic composite, especially an elastic composite material for high-performance tires. Background technique [0002] For nearly half a century, solution-polymerized synthetic rubber has developed into an irreplaceable important raw material for tires. Especially solution-polymerized styrene-butadiene rubber, with its ever-changing new structure, provides various viscoelastic properties required by tires, and makes silica an important reinforcing filler for reinforcing rubber. Tires made with silica and solution rubber have lower rolling resistance and higher wet skid resistance than tires made with carbon black and emulsion rubber. Therefore, solution polymerized synthetic rubber and silica have become important basic materials for high-performance tires. [0003] The braking performance of tires on wet roads, on the one hand, comes from the grip of the tires on the wet road, and on the other hand, from the absorption of ...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L9/00C08K9/04C08K3/36C08K3/04
Inventor 王婷李洪波张丽洋徐春燕华伦松杨丽芳周豪王宇杰周雷杜斌
Owner PETROCHINA CO LTD
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