A kind of high-strength, high-resilience, low-temperature-resistant sealing ring and preparation method thereof

Abstract

The technical scheme of the invention discloses a high-strength, high-resilience, low-temperature-resistant sealing ring, comprising a rubber top ring, a rubber bottom ring, a middle elastic layer, an inner wall and an outer wall; the middle elastic layer is clamped on the upper rubber top ring and the lower The rubber top ring, the middle elastic layer and the inner side of the rubber bottom ring are connected to the inner wall, and the outer side is connected to the outer wall to form an H-shaped structure. Mouth structure; the materials of the rubber top ring and the rubber bottom ring include low temperature resistant silicone rubber, natural rubber, butadiene rubber, polybutadiene rubber, reinforcing agent, vulcanizing agent, accelerator, emulsifier, anti-aging agent, Nano-zinc oxide, tolyl diisocyanate, sodium phytate. Through the structure and material composition of the sealing ring, the mechanical properties and low temperature resistance performance of the sealing ring are improved, and the utility model is environmentally friendly and easy to operate.

Description

technical field [0001] The invention relates to the technical field of sealing rings, in particular to a high-strength, high-resilience, low-temperature-resistant sealing ring and a preparation method thereof. Background technique [0002] Sealing ring is a commonly used mechanical part. It is a material or part that prevents fluid or solid particles from leaking from adjacent joint surfaces and prevents impurities such as external dust or water from entering the interior of machinery and equipment. Under different pressure and temperature conditions, the sealing effect of sealing rings of different structures and materials is also different under different conditions. However, once the sealing of the sealing ring fails, it will directly affect the use of the equipment. The sealing ring is usually an annular cover composed of one or several parts, which is fixed on one ring or washer of the bearing and contacts with another ring or washer or forms a narrow labyrinth gap to p...

AI Technical Summary

Problems solved by technology

At present, since the sealing ring is widely used in the sealing of construction, transportation, electronic instruments and components, the application environment is diverse. When the equipment is used in a very low temperature environment, such as in a very cold regional environment such as the Northeast In the application of low temperature environment, the elasticity of the sealing ring decreases, brittle damage occurs, and even cracks occur, resulting in air leakage and liquid leakage; in addition, when the mechanical strength and resilience of the sealing ring are insufficient, the sealing effect of the sealing ring will be significant. Decline, unable to meet the sealing requirements of the equipment, thus affecting the performance and safety of the equipment

[0003] In the prior art, the raw material of the sealing ring is usually changed to improve the performance of the sealing ring. Patent CN 110804226A discloses a butadiene rubber cold-resistant sealant and its preparation method, which includes butadiene rubber, polyethylene glycol, zinc stearate , microcrystalline wax, high wear-resistant carbon black, nano diatomite, ferric oxide, activated clay, antioxidant, dispersant, flame retardant, enhance the wear resistance and cold resistance of the sealant, but the preparation is Sealant instead of sealing ring; patent CN 111019199A discloses a sealing ring and its preparation method. In the formula system, natural rubber, high styrene rubber and butadiene rubber are used in combination to improve the mechanical strength of the sealing ring, and the elasticity is excellent, but Not resistant to low temperature

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