Self-repairing environmentally-friendly rubber material and preparation method thereof

Abstract

The invention discloses a self-repairing environmentally-friendly rubber material and a preparation method thereof, and relates to the field of self-repairing rubber. The self-repairing environmentally-friendly rubber material comprises the following components: a butyl rubber substrate, a self-repairing filler, a toughening anti-stretching filler, and a vulcanization auxiliary agent dispersion, wherein the vulcanization auxiliary agent dispersion is composed of zinc oxide, bentonite, sodium carboxymethylcellulose, accelerator TMTD and expanded graphite. The preparation method comprises the following steps: performing ball milling to obtain the vulcanization auxiliary agent dispersion, performing mixing, and performing vulcanization to obtain the rubber material. The preparation method provided by the invention does not requires harsh conditions and is simple and controllable, and the finished rubber material produced by vulcanization can achieve a good repairing effect in air atmosphere without adding other repairing systems and thermoplastic components; and the rubber material has tear strength of 26.5 KN/m, tensile strength of 10.9 MPa, impact resilience of 62%, and self-repairing property of 74.6%.

Description

technical field [0001] The invention relates to the technical field of self-repairing rubber, in particular to a self-repairing environment-friendly rubber material and a preparation method thereof. Background technique [0002] During the molding process and subsequent use of rubber products, they are inevitably subjected to external stimuli such as heat, machinery, chemistry, and ultraviolet radiation, which will cause local damage or microcracks inside the material, and the expansion of microcracks will eventually lead to material rupture. Greatly reduce the use value and security. Therefore, the study of the self-healing ability of rubber materials has always been a research hotspot in the field of rubber. Self-healing refers to the ability of the material itself to judge, control and recover from defects. Self-healing materials can self-detect and repair micro-damages by themselves through a certain mechanism, thereby significantly improving the safety of materials an...

AI Technical Summary

Problems solved by technology

However, after research, it is found that the following problems still exist: 1) The components of the rubber material cannot be well compatible, the toxicity is high, and the multiple self-repair of the rubber cannot be achieved, so that the temperature resistance, toughness and stretch resistance cannot be obtained. guarantee, which reduces the service life of rubber materials; 2) Most of them increase the toughness and tensile strength of the rubber matrix by adding inorganic fillers, which are poorly bonded to the rubber matrix. Even if the toughness and tensile strength are improved, self-repair is reduced performance; 3) The added vulcanization aids or thermoplastic components contain highly toxic substances, which cannot meet the requirements of environmental protection, low toxicity and large-scale industrial production of rubber materials; 4) The preparation method often requires the addition of other repair systems and thermoplastic components, temperature, The vacuum condition is harsh and difficult to control, and the finished rubber material produced after vulcanization does not have a good repair effect in the air atmosphere

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