High-strength self-healing rubber material and preparation method thereof

A rubber material and self-healing technology, applied in the field of rubber products, to achieve excellent self-healing performance, good mechanical properties, and simple preparation process

Pending Publication Date: 2021-02-19
侯光宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above studies failed to achieve both the mechanical properties of the product and the self-healing efficiency. For this reason, the present invention proposes a high-strength self-healing rubber material and a preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A high-strength self-healing rubber material, comprising the following raw materials in parts by weight: 100 parts of bromobutyl rubber, 8 parts of boron nitride nanosheets grafted with pyridine derivatives, 3 parts of nano-zinc oxide, and 20 parts of white carbon black part, 0.5 part of accelerator CBS, 7 parts of anti-aging agent (composed of anti-aging agent 6PPD, anti-aging agent RD and anti-aging agent NBC with a mass ratio of 1:1.5:0.6); its preparation method comprises the following steps: Add base rubber and pyridine derivatives to graft modified boron nitride nanosheets into the internal mixer, and knead once at 100°C for 12 minutes to obtain a first-time mixed material, which was left at room temperature for 18 hours, and then added nano-zinc oxide and white carbon Black, accelerator and anti-aging agent, secondary mixing at 110°C for 8 minutes, vulcanization treatment at 130°C for 12 minutes, to obtain high-strength self-healing rubber materials.

[0023] Amo...

Embodiment 2

[0025] A high-strength self-healing rubber material, comprising the following raw materials in parts by weight: 100 parts of bromobutyl rubber, 5 parts of boron nitride nanosheets grafted with pyridine derivatives, 1 part of nano-zinc oxide, and 26 parts of white carbon black 5 parts, 0.2 part of accelerator CBS, 5 parts of anti-aging agent (made up of anti-aging agent 6PPD, anti-aging agent RD and anti-aging agent NBC with a mass ratio of 1:1.5:0.5); its preparation method comprises the following steps: The base rubber and pyridine derivatives grafted modified boron nitride nanosheets were added into the internal mixer, and mixed at 90°C for 12 minutes to obtain a mixed material, which was left at room temperature for 24 hours, and then nano-zinc oxide, white Carbon black, accelerator and anti-aging agent were mixed at 120°C for 10 minutes, and vulcanized at 140°C for 10 minutes to obtain a high-strength self-healing rubber material;

[0026]Among them, the preparation of pyr...

Embodiment 3

[0028] A high-strength self-healing rubber material, comprising the following raw materials in parts by weight: 100 parts of chlorinated butyl rubber, 3 parts of boron nitride nanosheets grafted with pyridine derivatives (the preparation method is the same as in Example 1), nano-oxidized 4 parts of zinc, 22 parts of white carbon black, 0.8 parts of accelerator CBS, 9 parts of anti-aging agent (composed of anti-aging agent 6PPD, anti-aging agent RD and anti-aging agent NBC with a mass ratio of 1:2:0.5); its preparation method includes the following Steps: add halogenated butyl rubber and pyridine derivatives graft-modified boron nitride nanosheets into an internal mixer according to parts by weight, and mix at 90°C for 15 minutes to obtain a primary mixed material, and stand at room temperature for 12 hours , then add nano-zinc oxide, white carbon black, accelerator and anti-aging agent, secondly knead at 100°C for 3 minutes, and vulcanize at 110°C for 12 minutes to obtain a hig...

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Abstract

The invention discloses a high-strength self-healing rubber material and a preparation method thereof. The rubber material is prepared from the following raw materials: halogenated butyl rubber, a pyridine derivative grafted modified boron nitride nanosheet, nano zinc oxide, white carbon black, an accelerant and an anti-aging agent. The preparation method comprises the steps of firstly, carrying out free radical polymerization on the boron nitride nanosheet and the pyridine vinyl monomer to obtain a polyethylene polymer grafted modified boron nitride nanosheet of which the side chain containsa pyridine structure, and controlling the weight part of the grafted polymer to a certain extent by adjusting the addition amount of the initiator and the reaction time. Boron nitride with the structure has good mechanical properties and good compatibility with a halogenated butyl rubber matrix, and can form dynamic ionic cross-linking bonds when being uniformly dispersed in the halogenated butylrubber matrix by a mechanical blending method, so that the finally obtained rubber material has high tensile strength and high self-healing performance. The preparation method is simple in process andeasy to realize large-scale production.

Description

technical field [0001] The invention relates to the technical field of rubber products, in particular to a high-strength self-healing rubber material and a preparation method. Background technique [0002] During the long-term use of rubber materials, affected by environmental factors or external forces, micro-cracks or micro-damages that are difficult to detect will inevitably occur. These defects, as stress concentration points, will continue to grow and expand during the use of the material, which will lead to a significant decline in the performance of the material, affecting the safety and service life of the material. Inspired by the ability of living organisms to heal themselves after injury, self-healing materials have emerged. [0003] Self-healing, also known as self-repair, means that the micro-cracks and micro-damages generated in the early stage of material damage can be repaired in time to prevent them from developing into destructive cracks, thereby effective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08K13/06C08K9/04C08K3/38C08K7/00C08K3/22C08K7/26C08K5/18
CPCC08K13/06C08K9/08C08K3/38C08K7/00C08K3/22C08K7/26C08K5/18C08K2201/011C08K2003/385C08K2003/2296C08L2201/08C08L23/283
Inventor 侯光宇
Owner 侯光宇
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