Rubber hose and preparation method thereof

Abstract

The invention provides a rubber hose and a preparation method thereof, and relates to the technical field of rubber hose preparation. The rubber hose sequentially comprises an inner rubber layer, a fiber reinforced layer and an outer rubber layer from inside to outside. A plasticizer in the rubber material of the inner rubber layer is paraffin oil, the molecular weight of Ca in the paraffin oil is 6-8%, and the paraffin oil is a plasticizer with active small molecules. The inner rubber layer added with the plasticizer can move towards the surface of an inner rubber pipe after being baked at high temperature, so that the surface of the inner pipe is relatively high in oiliness. Therefore, when the inner pipe is heated and then passes through an outer rubber extruder, the inner pipe is in a high-temperature soft state, the surface of the inner pipe has certain oiliness, and the inner and outer rubber adhesion of a product can be well guaranteed.

Description

technical field [0001] The invention relates to the technical field of rubber hose preparation, in particular to a rubber hose and a preparation method thereof. Background technique [0002] At present, the pipelines produced by various materials and processes have a three-layer or more structure. The main reason is that in order to ensure the pressure-bearing performance of the product, it is necessary to add a reinforcement layer, because the material of the reinforcement layer itself has no compatibility with the rubber. , the adhesive performance of the inner and outer rubber is not good due to the existence of the reinforcement layer. The existing solution is to complete the production of the inner rubber, and after the weaving process of the reinforcement layer is completed, spray chemical additives to dissolve and differentiate the surface of the inner rubber. After the inner rubber material melts, part of the rubber material penetrates through the gap of the reinforc...

AI Technical Summary

Problems solved by technology

If the link of spraying chemical additives is directly removed, the inner tube will go through two processes of cooling and weaving after extrusion, and then directly cover the outer rubber. will have good adhesion

However, the connection method of the above-mentioned chemical additives has the following disadvantages: 1. The existing spray additives are all chemically synthesized chemicals, which will volatilize a small amount of toxic and harmful gases during use, and there are risks in the storage and transportation process, which belong to hazardous material

2. The residue and waste liquid after the use of chemical additives are toxic and harmful substances, which need to be discharged after special treatment. This process consumes resources such as water and electricity, and once a leak occurs, it will cause great pollution to the environment.

[0005] In view of this, it is very necessary and urgent to research and develop a new type of rubber pipe production process to alleviate the problem of large environmental pollution caused by the use of chemical additives in the production process of existing rubber hoses.

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