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Wear-resistant and aging-resistant natural rubber material and preparation method thereof

A natural rubber and anti-aging technology, applied in the field of rubber, can solve problems such as the reduction of active ingredients of antioxidants, the decline of material performance, and adverse environmental effects, so as to reduce physical loss, increase dispersion, and improve oxidation resistance. Effect

Inactive Publication Date: 2022-05-10
苏州东木轩装饰材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most commonly used phenolic antioxidants are small molecular substances, which are easily volatilized and lost during processing, which reduces the actual effective components of antioxidants in polymers.
In addition, during the use of polymers, small molecule antioxidants are easy to migrate or extract from the matrix under the action of heat or solvents, which not only leads to a decrease in the performance of the material, but also has a negative impact on the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of a wear-resistant and aging-resistant natural rubber material, comprising the following steps:

[0040] (1) In terms of parts by mass, put 70 parts of natural rubber into rubber plasticating equipment, masticate at 130°C for 15 minutes, then add 12 parts of wear-resistant agent, 3 parts of lubricant, 2 parts of plasticizer, and 1.5 parts of sulfur , 2 parts of accelerator, and 6 parts of new antioxidant are put into rubber plasticating equipment, and continue to be plasticized at 130°C for 15 minutes to obtain plasticized rubber;

[0041] (2) The masticated rubber prepared in step (1) is sent into a twin-screw extruder, and uniformly mixed and extruded to obtain the wear-resistant and aging-resistant natural rubber material. The temperatures in each district of the twin-screw extruder are respectively : Zone 1 120°C, Zone 2 120°C, Zone 3 125°C, Zone 4 130°C, Zone 5 135°C, Zone 6 135°C, Zone 7 130°C, Zone 8 125°C, Zone 9 120°C, Head 125°C .

[00...

Embodiment 2

[0051] A preparation method of a wear-resistant and aging-resistant natural rubber material, comprising the following steps:

[0052] (1) In terms of parts by mass, put 70 parts of natural rubber into rubber plasticating equipment, masticate at 130°C for 15 minutes, then add 12 parts of wear-resistant agent, 3 parts of lubricant, 2 parts of plasticizer, and 1.5 parts of sulfur , 2 parts of accelerator, and 6 parts of new antioxidant are put into rubber plasticating equipment, and continue to be plasticized at 130°C for 15 minutes to obtain plasticized rubber;

[0053] (2) The masticated rubber prepared in step (1) is sent into a twin-screw extruder, and uniformly mixed and extruded to obtain the wear-resistant and aging-resistant natural rubber material. The temperatures in each district of the twin-screw extruder are respectively : Zone 1 120°C, Zone 2 120°C, Zone 3 125°C, Zone 4 130°C, Zone 5 135°C, Zone 6 135°C, Zone 7 130°C, Zone 8 125°C, Zone 9 120°C, Head 125°C .

[00...

Embodiment 3

[0064] A preparation method of a wear-resistant and aging-resistant natural rubber material, comprising the following steps:

[0065] (1) In terms of parts by mass, put 70 parts of natural rubber into rubber plasticating equipment, masticate at 130°C for 15 minutes, then add 12 parts of wear-resistant agent, 3 parts of lubricant, 2 parts of plasticizer, and 1.5 parts of sulfur , 2 parts of accelerator, and 6 parts of new antioxidant are put into rubber plasticating equipment, and continue to be plasticized at 130°C for 15 minutes to obtain plasticized rubber;

[0066] (2) The masticated rubber prepared in step (1) is sent into a twin-screw extruder, and uniformly mixed and extruded to obtain the wear-resistant and aging-resistant natural rubber material. The temperatures in each district of the twin-screw extruder are respectively : Zone 1 120°C, Zone 2 120°C, Zone 3 125°C, Zone 4 130°C, Zone 5 135°C, Zone 6 135°C, Zone 7 130°C, Zone 8 125°C, Zone 9 120°C, Head 125°C .

[00...

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Abstract

The invention relates to the field of rubber, in particular to a wear-resistant and aging-resistant natural rubber material and a preparation method thereof. According to the invention, 3-isocyanate propyl trimethoxy silane is used as a bridging agent, porous silicon dioxide nanoparticles are used for immobilizing micromolecular antioxidants dihydromyricetin and p-phenylenediamine, and polydopamine is used for coating, so that a novel antioxidant which is high in thermal stability, not easy to migrate and dissolve out and good in dispersity in rubber is obtained. The prepared novel antioxidant is further applied to rubber production, and the wear-resistant and aging-resistant natural rubber material is prepared.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a wear-resistant and aging-resistant natural rubber material and a preparation method thereof. Background technique [0002] Polymer materials, especially rubber containing a large amount of unsaturated C=C double bonds, are prone to oxidation under the action of external conditions such as heat, light, oxygen, ozone or mechanical force during storage, processing or use, causing molecular Degradation, or crosslinking, of the chains leads to deterioration of the properties of the material, a phenomenon known as aging. Rubber has the advantages of high elasticity, high strength, high strain and easy molding. It is one of the important materials used by human beings. However, the disadvantage of rubber's poor heat and oxygen aging resistance greatly reduces its service life and seriously limits its use in daily life. And widely used in national industry. In order to delay or inhibit the agin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K13/06C08K3/22C08K3/04C08K5/20C08K9/12C08K5/132C08K5/18C08K9/04C08K9/02C08K9/06C08K9/10C08K7/26
CPCC08K13/06C08K3/22C08K3/04C08K5/20C08K9/12C08K5/132C08K5/18C08K9/04C08K9/02C08K9/06C08K9/10C08K7/26C08K2003/2296C08L2201/08C08K2201/011C08L7/00
Inventor 徐建忠王开华孙鹏
Owner 苏州东木轩装饰材料有限公司
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