Method for manufacturing steel wire hydraulic knitted rubber hose containing formaldehyde modified lignin

Abstract

The invention relates to a method for manufacturing a steel wire hydraulic knitted rubber hose containing formaldehyde modified lignin, belonging to the technical field of the methods for manufacturing rubber products. Mixing rubber produced by utilizing a mixing process serves as a rubber hose and used for producing the high-performance steel wire knitted hydraulic rubber hose for an inner liner. The technical scheme of the method comprises the following steps of: a sizing material mixing process: adopting a two-stage mixing method, that is, mixing and producing one-stage rubber by utilizingan internal mixer, placing the rubber for 8-24 hours and then carrying out second-stage sulfur adding in an open mill, wherein a reverse-order mixing method and variable-speed mixing are utilized in the one-stage mixing in the internal mixer and the heat treatment is carried out on the sizing material during the two-stage mixing in the open mill; extruding the inner liner of the steel wire hydraulic knitted rubber hose by utilizing the mixing rubber; and manufacturing the steel wire hydraulic knitted rubber hose via a knitted steel wire enhancing layer and an extrusion external coating and through cladding, setting and vulcanizing. By utilizing the mixing process, the dispersity of the lignin is greatly improved; the physical and mechanical properties of the steel wire hydraulic knitted rubber hose are good; and compared with nitrile rubber separately using carbon black as a reinforcing agent, the steel wire hydraulic knitted rubber hose containing the formaldehyde modified lignin hasobvious advantages of rigidity, aging resistance and oil resistance at a normal temperature.

Description

technical field [0001] The invention belongs to the technical field of manufacturing methods of rubber products, in particular to a manufacturing method of rubber hoses. Background technique [0002] The traditional steel wire hydraulic hose inner liner reinforcement material is mainly carbon black, and the existing problems are as follows: [0003] The production process of carbon black consumes a large amount of non-renewable resources—petroleum, which has the disadvantages of high energy consumption and environmental pollution. [0004] As the main raw material of carbon black is petroleum, the price of petroleum has gradually risen in recent years, which has increased the production cost of carbon black to a certain extent, making the material cost of rubber hose production relatively high. [0005] The hardness of the unvulcanized tube blank is insufficient, and the tube blank deforms greatly during the wire weaving process, which reduces the dimensional stability and ...

AI Technical Summary

Problems solved by technology

[0009] Using carbon black alone as the nitrile rubber reinforcing material for the inner lining of the steel wire hydraulic braided hose has many resource consumption, high material cost, unstable hose size, low hose assembly efficiency and head buckle quality, and short service life of the hose. The problem