Inner glue and rubber mixed material for high-performance steel wire-wound hydraulic rubber tubes and preparation method thereof

Abstract

The invention discloses an inner glue and rubber mixed material for high-performance steel wire-wound hydraulic rubber tubes and a preparation method thereof, belonging to an inner glue and rubber mixed material and solving the technical problem of poor pulse performance of the finished products of hydraulic rubber tubes. The inner glue and rubber mixed material is prepared from the following raw materials in parts by weight: 95-115 parts by weight of butadiene-acrylonitrile rubber, 6-10 parts by weight of active agent, 4-6 parts by weight of resin, 1-2 parts by weight of anti-aging agent, 40-60 parts by weight of high-dispersion and low-structure carbon black, 6-8 parts by weight of chemical plasticizer and 3.5-3.9 parts by weight of vulcanizing accelerator. The preparation method comprises the following steps: (1) primary refining: refining the butadiene-acrylonitrile rubber for 5-6 minutes at 95 -100 DEG C in an airtight rubber refining machine; (2) mixed refining: adding the active agent, the resin, the anti-aging agent, the high-dispersion and low-structure carbon black and the chemical plasticizer for mixed refining of 9-11 minutes at 100 -110 DEG C, discharging the mixed rubber and placing the mixed rubber on a refining machine to be rolled for 2-3 times and cooling the mixed rubber to 45 -55 DEG C; and (3) vulcanization: adding the vulcanizing accelerator, carrying out three-time packaging, two-time rolling and one-time thinning on an open type rubber refining machine, discharging sheets after achieving the roll distance of 0.4-0.6 mm, extruding the placed sheets, and vulcanizing the sheets for 35-45 minutes at 148-152 DEG C.

Description

technical field [0001] The rubber material field of the present invention specifically relates to an inner rubber material for a steel wire wound hydraulic hose, and also relates to a preparation method of the material. Background technique [0002] According to market sampling and information exchanged by domestic counterparts, the properties of steel wire wound hydraulic hose inner rubber are generally low at present, and the general properties are as follows: breaking strength ≤ 15.5Mpa, elongation ≥ 210%, 100% constant elongation ≤ 8.0Mpa; permanent deformation ≥ 6%; compression permanent deformation ≥ 25%, hardness ≤ 86 °C, resulting in poor pulse performance of the finished hydraulic hose, prone to pinholes and leakage of inner rubber, affecting the normal use of the product, and no higher performance standard has been reached in China after searching The inner rubber of the steel wire wound hydraulic hose. Contents of the invention [0003] In order to improve the ...

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Problems solved by technology

[0002] According to market sampling and information exchanged by domestic counterparts, the properties of steel wire wound hydraulic hose inner rubber are generally low at present, and the general properties are as follows: breaking strength ≤ 15.5Mpa, elongation ≥ 210%, 100% constant elongation ≤ 8.0Mpa; permanent deformation ≥ 6%; compression permanent deformation ≥ 25%, hardness ≤ 86 °C, resulting in poor pulse performance of the finished hydraulic hose, prone to pinholes and leakage of inner rubber, affecting the normal use of the product, and no higher performance standard has been reached in China after searching Wire wound hydraulic hose inner rubber

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