A method for preparing a high-strength single-layer aramid conveyor belt joint structure

Abstract

The invention relates to a joint structure of a high-strength single-layer aramid fiber conveyor belt and a preparation method thereof, belonging to the technical field of rubber conveyor belt products. It includes a single-layer aramid straight-warp and straight-weft canvas conveyor belt. The straight-warp and straight-weft aramid canvas skeleton materials in the joint areas at both ends of the single-layer aramid straight-warp and straight-weft canvas conveyor belt are meshed and spliced ​​with each other. The upper and lower sides of the canvas skeleton material are respectively covered with a layer of adhesive layer, and the fabric is placed on the adhesive layer as a reinforcement layer, and a layer of adhesive adhesive for bonding is covered on the reinforcement layer, and then the upper and lower covering adhesive layers are bonded into a One-piece; High-strength single-layer aramid conveyor belt joints are obtained by stripping rubber, grinding excess glue, cutting fingers, cutting fabric reinforcement layers, painting glue, splicing fingers, forming joints and vulcanized joints. The product prepared by the invention has a good joint strength retention rate, and can also meet the requirements of the single-layer aramid conveyor belt on dynamic flex performance, and the preparation method is simple, economical and practical.

Description

technical field [0001] The invention relates to a high-strength single-layer aramid conveyor belt joint structure and a preparation method thereof. The obtained product has a good joint strength retention rate and can also meet the dynamic flexural performance requirements of the single-layer aramid conveyor belt. The invention belongs to the technical field of rubber conveyor belt products. Background technique [0002] In recent years, the rapid development of the national economy has catalyzed the continuous expansion of steel, cement and other manufacturing industries and the continuous improvement of production capacity, which has brought greater opportunities and challenges to the material conveyor belt industry. Customers have continuously improved the strength specifications of the conveyor belt, but ordinary plain canvas adopts the method of lamination to increase the strength. When the belt body passes through the driving roller, the difference in the curvature rad...

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Problems solved by technology

[0004] However, the structure of the single-layer skeleton layer of the aramid conveyor belt makes it difficult to adopt the traditional ladder lap joint method.

The German standard DIN22121 points out that "the joints of high-strength single-layer or double-layer fabric core conveyor belts are connected by finger splicing." There are few domestic studies and reports on finger joints of aramid conveyor belts.

However, due to the discontinuity of the skeleton material in the form of finger splicing, the strength of the joint depends entirely on the strength of the rubber body and the shear strength of the bonding interface. It does not take advantage of the high strength and high modulus of the aramid canvas skeleton material, and the joint strength retention rate is low.

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