Nitrile rubber gloves based on material self-repairing and preparation process

By modifying the cross-linking structure of nitrile rubber latex and silane-modified nano-silica, the problem of nitrile rubber gloves being unable to self-heal has been solved, achieving high mechanical properties and self-healing ability, making them suitable for low-temperature environments, and avoiding the safety hazards caused by plasticizers.

CN121362386AActive Publication Date: 2026-01-20QINGDAO RIDONG LABOR PROTECTION PROD CO LTD
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Patent Information

Application Number
CN202511281205.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-09
Publication Date
2026-01-20
Estimated Expiration
2045-09-09

AI Technical Summary

Technical Problem

Traditional nitrile rubber gloves are easily punctured or torn by sharp objects during use, and cannot repair themselves, resulting in a sharp drop in protective performance, increased usage costs, and potential safety accidents.

Method used

The material employs modified nitrile latex, silane-modified nano-silica, vulcanizing agent, accelerator, crosslinking agent, coordination salt, and 1,4-butanediol di(3-mercaptopropionate) to form a dual dynamic reversible crosslinking structure through covalent and non-covalent crosslinking. Combined with the flexible structure of 1,4-butanediol di(3-mercaptopropionate), it achieves self-healing properties.

Benefits of technology

The prepared nitrile rubber gloves have good mechanical properties and self-healing ability, can quickly repair minor damage at room temperature, are resistant to low temperature environments, do not require plasticizers, have stable performance, and avoid potential safety hazards.

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a nitrile rubber glove based on material self-repairing and a preparation process, the nitrile rubber glove comprises the following raw materials by weight: 50-70 parts of modified nitrile rubber latex, 10-15 parts of silane modified nano silica, 0.5-1 part of a vulcanizing agent, 0.25-0.35 part of an accelerator, 0.5-1 part of a cross-linking agent, 7-12 parts of a coordination salt, and 1, 2-propylene glycol. 4-6 parts of 2, 4-butanediol di (3-mercaptopropionate), 1-3 parts of an anti-aging agent and 55-65 parts of deionized water. The nitrile rubber glove prepared by the invention has good mechanical properties, wherein the tensile strength is 32-35MPa, the puncture resistance grade is grade 4, the wear resistance grade is grade 4, the tear resistance grade is grade 4, and the cutting resistance grade is grade 3; the material has good self-repairing capability, can realize rapid self-repairing of slight damage within 5 min at room temperature, and can realize rapid self-repairing of puncture or tear damage after heating to more than 60 DEG C for about 20-30 min.
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Citation Information

Patent Citations

  • Vulcanized rubber with self-repairing and recyclability characteristics as well as preparation method and application thereof

    CN104610587A

  • Self-repairing rubber diaphragm with pressure regulation function, preparation method and self-repairing method

    CN111590979A

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    US20220282015A1