A kind of nitrile rubber system with repairability and preparation method and repair method thereof

A nitrile rubber and repairing technology, applied in the field of nitrile rubber, can solve problems such as environmental pollution, and achieve the effects of high repairing efficiency, good repeatability and improving self-healing ability.

Active Publication Date: 2021-10-01
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this solves the problem of repeated use of rubber, a large amount of solvents (such as tetrahydrofuran, N, N-dimethylformamide) and modified raw materials (such as ionic liquids) used in the process of modifying rubber molecular chains or fillers Modified graphene), etc., will still bring obvious environmental pollution

Method used

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  • A kind of nitrile rubber system with repairability and preparation method and repair method thereof
  • A kind of nitrile rubber system with repairability and preparation method and repair method thereof
  • A kind of nitrile rubber system with repairability and preparation method and repair method thereof

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preparation example Construction

[0038] The embodiment of the present invention also provides a kind of preparation method of the repairable nitrile rubber system, comprising the following steps:

[0039] (1) Take the raw materials by weighing the following parts by weight:

[0040]100 parts of rubber, 5-40 parts of coordination salt, 0.5-10 parts of filler, 1-5 parts of polysulfide bond vulcanizing agent, 1-3 parts of anti-aging agent and 5-10 parts of polyhydroxy compound, wherein the rubber includes The mass ratio is 2:8-8:2 mixed nitrile rubber and halogenated butyl rubber, and the polyhydroxy compound is polyhydric alcohol or phenol.

[0041] (2) Disperse the weighed coordination salt and the polyhydroxy compound into a uniform solution at normal temperature;

[0042] (3) mixing the rubber and filler weighed in step (1) to obtain the rubber mix;

[0043] (4) Add the homogeneous solution into the rubber compound by dropping, continue to add the anti-aging agent and polysulfide bond vulcanizing agent wei...

Embodiment 1

[0050] Present embodiment provides a kind of repairable nitrile rubber system, and its preparation method comprises the steps:

[0051] (1) Take the following raw materials:

[0052]

[0053]

[0054] (2) Add the zinc chloride and tea polyphenols weighed in step (1) into 200 mL of acetone at room temperature, and ultrasonically dissolve to form a homogeneous solution.

[0055] (3) Mix other raw materials taken in step (1) on the open mill:

[0056] Carry out mastication of nitrile rubber 2707, blend with chlorinated butyl rubber 1068 after mastication, add weighed carbon nanotubes to obtain the compounded rubber;

[0057] The temperature of the roller is raised to 80°C, and when the temperature of the rubber mix is ​​90°C, the homogeneous solution prepared in step (2) is added dropwise to the rubber mix. After that, lower the roll temperature to normal temperature, continue to add the weighed anti-aging agent MB and accelerator TMTD, make a triangle bag, and thin the f...

Embodiment 2

[0062] The present embodiment provides a kind of repairable nitrile rubber system, and its preparation method comprises the following steps

[0063]

[0064] (2) At normal temperature, the stannous chloride and dipropylene glycol weighed in step (1) are formulated into a solution, and ultrasonically dissolved to form a homogeneous solution.

[0065] (3) Mix other raw materials taken in step (1) on the open mill:

[0066] The raw rubber of hydrogenated nitrile rubber Zepel 2010 is masticated, after mastication, it is blended with brominated butyl rubber Lanxess 2030, and the weighed superconducting carbon black is added to obtain the mixed rubber;

[0067] The temperature of the roller is raised to 80°C, and when the temperature of the rubber mix is ​​95°C, the solution prepared in step (2) is added dropwise to the rubber mix. After that, lower the temperature of the roll to normal temperature, continue to add the weighed anti-aging agent RD and accelerator DM, make a trian...

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Abstract

The invention discloses a repairable nitrile rubber system, a preparation method and a repair method thereof, and belongs to the technical field of nitrile rubber. The raw materials of the rubber system include the following components in parts by weight: 100 parts of rubber, 5-40 parts of coordination salt, 0.5-10 parts of filler, 1-5 parts of polysulfide bond curing agent, 1-3 parts of anti-aging agent and more 5-10 parts of hydroxyl compound, wherein the rubber includes nitrile rubber and halogenated butyl rubber mixed in a mass ratio of 2:8-8:2, and the polyhydroxy compound is polyhydric alcohol or polyhydric phenol. The restorative nitrile rubber system provided by the embodiments of the present invention forms a cross-linked structure with covalent bonds and non-covalent bonds by constructing coordination bonds, hydrogen bonds and polysulfide exchange bonds inside the nitrile rubber , comprehensively improve the self-repair ability of rubber, and the repair process is simple, economical and environmentally friendly, and the repair efficiency is high.

Description

technical field [0001] The invention relates to the field of nitrile rubber, in particular to a restorative nitrile rubber system, a preparation method and a repair method thereof. Background technique [0002] Rubber materials such as nitrile rubber convert linear macromolecules into chemically cross-linked three-dimensional network structures through vulcanization reactions, thereby obtaining good elastic and mechanical properties. However, vulcanized rubber is insoluble and infusible, so it cannot be recycled like thermoplastic polymer materials, causing serious environmental pollution and waste. [0003] At present, the recycling of rubber is mainly to pulverize it into rubber powder and use it as a filling material for rubber, plastic and other products; or desulfurize under the action of heat, oxygen, mechanical action and chemical regeneration agent to obtain reclaimed rubber. Obviously, the recycling process of vulcanized rubber has problems such as time-consuming, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/28C08L9/02C08K3/04C08K3/16C08K5/5415C08L15/00C08K5/06C08L13/00C08K5/053
CPCC08K2003/168C08K2201/011C08L9/02C08L13/00C08L15/005C08L23/283C08K3/041C08K3/16C08K5/5415C08K3/04C08K5/06C08K3/042C08K5/053
Inventor 张继华李凡任灵冯华东付万军
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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