A kind of flame-retardant steel cord conveyor belt core glue and preparation method thereof

Abstract

The invention discloses core rubber of a flame-retarding steel wire rope core conveyer belt and a preparation method of the core rubber. The core rubber is prepared from the following raw materials inparts by weight: 80 to 100 parts of chloroprene rubber, 30 to 40 parts of organic silicon rubber, 8 to 10 parts of a polyfluorosiloxane-polyvinyl fluoride block copolymer, 6 to 10 parts of polyborosiloxane, 10 to 20 parts of a flame retardant, 25 to 35 parts of a reinforcing agent coumarone indene resin, 25 to 35 parts of a filling agent modified kaolin, 3 to 5 parts of sulfur, 0.5 to 2.5 parts of an accelerant CZ, 15 to 25 parts of chlorinated paraffin, 1 to 4 parts of an anti-ageing agent NBC, 5 to 15 parts of an epoxy resin adhesive and 1 to 3 parts of a silane coupling agent. By adoptingthe core rubber, the flame-retarding performance of the steel wire rope core conveyer belt is remarkably improved and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of steel cord conveyor belts, in particular to a flame-retardant steel cord conveyor belt core glue and a preparation method thereof. Background technique [0002] The steel cord conveyor belt consists of a covering layer, a steel cord skeleton layer and a core rubber layer. The conveyor belt is made of high-performance galvanized steel wire ropes arranged at a fixed longitudinal distance and equal tension as the skeleton material, and the upper and lower sides and both sides are covered with core rubber and covering rubber with different properties and thicknesses after molding and vulcanization. The steel wire rope plays the role of bearing the load, and the rubber plays the role of protecting the steel wire rope. The bonding of rubber and steel cords is the key to the production of conveyor belts. The core rubber and the steel wire rope are directly infiltrated and bonded to prevent the steel wire rope from rusti...

AI Technical Summary

Problems solved by technology

[0003] At present, steel cord conveyor belts are responsible for most of the transportation tasks in mines, underground and other harsh environments that are not suitable for manual operation. The hidden danger of fire caused by long-time work, frictional heat generation and environmental temperature rise is unavoidable, which puts forward further requirements on the flame retardant performance of the conveyor belt, and needs to improve the poor dynamic fatigue resistance between the core rubber and the steel wire rope during use. , easy to age and restore

With the prolongation of the conveying time, the core rubber and the steel wire rope should be fatigued and aged, resulting in a decrease in the bonding strength. As the temperature increases, the bonding strength of the covering rubber of the conveyor belt and the steel wire rope will drop sharply. improvement of

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