Method of using super-cladodification polymer branch-connection inorganic nanometer powder for reinforcing surface rubber performance of engineering tyre

A hyperbranched polymer, inorganic nanotechnology, applied in tires, applications, household appliances, etc., can solve the problems of inability to reach, difficult to disperse and process, poor compatibility, etc.

Inactive Publication Date: 2009-09-09
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most nano-powders and rubber molecules have poor compatibility, forming a "sea island" structure, which brings great difficulties to dispersion and processing. On this basis, the use of silane coupling agents can solve the problem of nano-particles and rubber large Molecular compatibility issues, but still can't achieve the desired effect

Method used

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  • Method of using super-cladodification polymer branch-connection inorganic nanometer powder for reinforcing surface rubber performance of engineering tyre
  • Method of using super-cladodification polymer branch-connection inorganic nanometer powder for reinforcing surface rubber performance of engineering tyre
  • Method of using super-cladodification polymer branch-connection inorganic nanometer powder for reinforcing surface rubber performance of engineering tyre

Examples

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Effect test

Embodiment 1

[0022] Use nano-alumina as the initial raw material, vacuum dry at 110°C for 24 hours to remove impurities in the raw material, then modify the surface with grafted silane coupling agents KH550, KH560, KH590, and then react with hyperbranched polyester under the action of a catalyst to obtain hyperbranched Grafted nanopowders.

[0023] Step (a): Add 100ml of absolute ethanol to the flask, add 2g of nanopowder and 1ml of KH550, ultrasonic for 30 minutes, stir and reflux for 2-4h until all suspended, wash repeatedly, filter with suction, and vacuum dry at 110°C for 10-24h Finally, organically treated nano-powder KH550-Al was obtained 2 o 3 ;

[0024] Step (b): Add 2 g of the nanopowder of step (a) or unmodified nanopowder into the flask, add 25 g of 10% carboxyl-terminated hyperbranched polymer tetrahydrofuran solution, seal it, and pump nitrogen repeatedly three times , sonicated for 30-1000min, reacted at 120°C for 4h, suction filtered, washed repeatedly, and vacuum-dried a...

Embodiment 2

[0026] Use nano-alumina as the initial raw material, vacuum dry at 110°C for 24 hours to remove impurities in the raw material, then modify the surface with grafted silane coupling agents KH550, KH560, KH590, and then react with hyperbranched polyester under the action of a catalyst to obtain hyperbranched Grafted nanopowders.

[0027] Step (a): Add 100ml of absolute ethanol to the flask, add 2g of powder and 1ml of KH550, sonicate for 30 minutes, stir and reflux for 2-4h until all are suspended, wash repeatedly, filter with suction, and vacuum dry at 110°C for 10-24h Obtain organic treatment nanopowder;

[0028] Step (b): Add 2g of nanopowder of step (a) or nanopowder without organic modification into the flask, add 5g of 2,2-bis(hydroxymethyl)propionic acid, 0.5g of p-toluenesulfonic acid and 50ml DMF, ultrasonicated for 30 minutes, sealed, refluxed in nitrogen atmosphere for 4h until the reaction was complete, filtered with suction, washed repeatedly, and dried in vacuum a...

Embodiment 3

[0030] Using SiC as the initial raw material, after acidification and acylation, ethylenediamine was connected, and in the presence of boron trifluoride ether, the polymerization of glycidol was initiated to obtain SiC grafted with hyperbranched polymer synthesized in situ.

[0031] Step (a): In a 100ml single-neck round bottom flask equipped with a magnetic stirring rotor, add 4g of dry SiC40ml 60%HNO 3 , heated to 120°C after ultrasonication for 30 minutes, stirred and refluxed for 24 hours, filtered with polytetrafluoroethylene microporous membrane, washed repeatedly with deionized water until neutral, and vacuum dried at 80°C for 24 hours to obtain 3.5 g of acidified SiC;

[0032]Step (b): In a 100ml single-neck round bottom flask equipped with a magnetic stirring rotor, add 3.5g of acidified SiC and 15g of thionyl chloride obtained in step (a), ultrasonicate for 30min, heat to 60°C, stir and reflux Reacted for 24 hours, suction filtered and washed repeatedly to remove thi...

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Abstract

The invention discloses a method of using super-cladodification polymer branch-connection inorganic nanometer powder for reinforcing the surface rubber performance of an engineering tyre, which is as follows: nanometer powder after super-cladodification surface process is added into the rubber mixed-smelting process; and under the condition that the original rubber production formula and technology are not changed, 1 to 20 parts of super-cladodification nanometer powder are added into 100 weight parts of rubber substrate. The terminal-group functional group of high density of the super-cladodification polymer and the defective cavity structure are helpful for the dispersion of nanometer granules, and have great potency for balancing the integrative performance of the nanometer composite material, thus the granules have excellent dispersing compatibility in the rubber substrate, the rubber displays excellent reinforcing synergy effect and interface compatible effect, and the tensile strength, the breakage elongation, the tearing strength and the wear resistance are greatly improved.

Description

technical field [0001] The invention relates to a method for synergistically enhancing the performance of engineering tire tread rubber by hyperbranched polymer / nano powder, and belongs to the technical field of nano-material modified tread rubber and rubber formulation. Background technique [0002] As a strategic material, rubber plays a pivotal role in the national economy. In the traditional rubber manufacturing industry, carbon black nano-powders and silica powders have been widely used as indispensable reinforcing agents for rubber. With the continuous improvement of the performance requirements of rubber products, how to further improve the performance of rubber materials is a major issue in the field of rubber industry technology. Nanotechnology has a very broad prospect in the field of rubber modification. [0003] With the development of various highways, large-scale water conservancy projects, mining projects and many engineering projects in our country, a large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/08C08L21/00C08K9/04C08K3/22C08K3/36C08K3/34C08K3/30C08K3/26
Inventor 施利毅付继芳陈立亚芦火根肖映林陈怡赵国璋钟庆东
Owner SHANGHAI UNIV
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