High-pressure rubber hose and production process thereof

Abstract

The invention relates to a high-pressure rubber hose and a production process of the high-pressure rubber hose. The high-pressure rubber hose includes an inner rubber layer, a first reinforcement layer, a middle rubber layer, a second reinforcement layer, an outer rubber layer and an ultra-high molecular weight polyethylene film from inside to outside in sequence. The outer rubber layer contains 90-110 parts of ethylene-propylene rubber, 4.5-5.2 parts of zinc oxide, 0.8-1.2 parts of stearic acid, 55-65 parts of carbon black, 20-22 parts of dibutyl phthalate, 0.48-0.55 part of dimethylaminoethyl methacrylate, 1.2-1.8 parts of accelerants and 1.2-1.8 parts of sulfur. The production process is characterized in that on the basis of an existing process, the following steps are added: the outer rubber layer is extruded and then passes through a heating cylinder, and when the temperature of the outer rubber layer reaches 120 DEG C to 150 DEG C, the outer rubber layer is coated with the ultra-high molecular weight polyethylene film; water cloth is wound around the outer rubber layer, and then sulfuration is carried out. The high-pressure rubber hose resists shock, corrosion, low temperature and adhesion, and is high in wear resistance, capable of conducting self-lubrication, long in service life, sanitary and non-toxic.

Description

Technical field [0001] The invention relates to the field of processing and manufacturing of high-pressure hoses, in particular to a high-pressure hose covered with an ultra-high molecular weight polyethylene film and a production process thereof. Background technique [0002] High-pressure hoses are widely used in petrochemical, coal, electric power, transportation, medical equipment, machinery manufacturing, mining, ships, automobiles and other fields. The high-pressure hose includes ultra-high-pressure steel wire wound tube, high-pressure steel wire braided tube, cotton-wound high-pressure tube, cotton-woven high-pressure tube, etc., mainly including inner rubber layer, first reinforcement layer, middle rubber layer, second reinforcement layer and outer rubber Floor. [0003] The existing high-pressure hose still has the following shortcomings: [0004] 1. Poor wear resistance. After a period of use, the surface of the outer rubber layer of the hose is easily worn, smashed, dama...

AI Technical Summary

Problems solved by technology

[0005] 2. Not resistant to impact (not resistant to impact), the surface of the outer rubber is damaged after being impacted and impacted, and the steel wire of the reinforcement layer is rusted, causing the pipe body to leak and be scrapped

[0006] 3. The existing high-pressure hoses are not resistant to chemical corrosion and cannot be used in acidic or alkaline environments

[0007] 4. No self-lubrication

[0008] 5. Not resistant to low temperature, when the temperature is lower than (-100°C), the adhesive layer will crack

[0009] 6. The outer rubber layer contains a large amount of organic substances, which have certain toxicity. The human body directly contacts with the outer rubber layer, which is not conducive to health

[0010] 7. Low tensile strength and no elasticity

[0013] 10. The performance is relatively single, which cannot meet the continuous improvement of the comprehensive performance requirements of high-pressure pipes in important fields such as the coal industry, petroleum industry, machinery manufacturing, metallurgical industry, and food industry.

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