Bamboo-hemp winding composite pressure pipe and preparation method thereof

Abstract

The invention discloses a bamboo-hemp winding composite pressure pipe and a preparation method thereof, and belongs to the technical field of bamboo composite pipelines. A liner layer, a structure layer and an outer protection layer are sequentially arranged on the bamboo-hemp winding composite pressure pipe in the radial direction. The structure comprises at least one hemp winding unit and at least one bamboo winding unit, each hemp winding unit comprises at least two hemp fibers formed by winding and bonding hemp fiber curtains, and each bamboo winding unit comprises at least two axial bamboo skin layers formed by winding and bonding bamboo skin curtains. Meanwhile, the sum of the numbers of the hemp fiber layers and the axial bamboo skin layers in the structure layer is not smaller than6. The bamboo-hemp winding composite pressure pipe is simple in structure, the preparation method is convenient and rapid, the performance advantages of bamboo materials and hemp materials can be fully achieved, the composite pressure pipe has good internal pressure resisting capacity and excellent external pressure resisting capacity, the ring stiffness and bending resisting capacity of the composite pressure pipe are greatly improved, the application range of the pipe is effectively widened, and good practical value is achieved.

Description

technical field [0001] The invention belongs to the technical field of bamboo composite pipes, and in particular relates to a bamboo hemp winding composite pressure pipe and a preparation method thereof. Background technique [0002] In industrial production and daily life, pipeline structures are widely used, and traditional pipelines such as cement pipes, polyvinyl chloride, polyethylene, polypropylene, glass steel pipes, and thin iron pipes are commonly used. Among them, cement pipes are low in cost, but also low in strength and heavy in weight, and the pipe joints are easy to leak; PVC, polyethylene, and polypropylene pipes are light, smooth, and corrosion-resistant, but their rigidity and strength are insufficient and raw materials Both are petrochemical synthetic products; glass steel pipes and glass steel sand pipes have corrosion resistance, high strength, and low fluid resistance, but the main raw material for the product is glass fiber with high energy consumption,...

AI Technical Summary

Problems solved by technology

Among them, the process of processing hemp fiber raw materials is relatively mature, and it is widely used in the fields of automotive interiors, hemp ropes, and daily necessities. pressure requirements, that is, it can withstand a large radial pressure from the inside to the outside; however, the ring stiffness of the hemp composite pipe is poor, and it can only withstand a small radial pressure from the outside to the inside, which cannot meet the requirements of many application fields. The ring rigidity of the pipe is required, and the axial force that the hemp composite pipe can bear is limited, and the ability to resist bending is poor, which further limits its application field and cannot give full play to the value of hemp material

At the same time, although the bamboo winding composite pipe has good ring stiffness and axial force, and the bamboo strip winding technology has also made rapid progress in recent years, the bamboo strip feeding and lapping technology have not yet fully matured, resulting in It is relatively difficult to control the bamboo composite pipe during molding, and the preparation cost of the pipe is also high. It is difficult to achieve reasonable control of the performance of the pipe, which restricts the application and development of the bamboo composite pipe.

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