Research progress on the structure,technology and performance of braided tubes
Fibrous tubular materials refer to tubular materials produced through textile methods,which possess many advantages such as good fatigue resistance,high strength,and high modulus.They can be widely used in pipelines,pipe shells,bushings,ultra-high temperature insulation pipes,and structural support fields.Fibrous tubular materials generally include woven tubes,knitted tubes,non-woven tubes,and braided tubes.Among them,woven tubes are mainly evolved from double-layer woven fabrics,with low porosity,low elasticity and high mechanical strength;knitted tubes can be prepared by the two methods of weft knitting and warp knitting,with uniform pore structure,high porosity and high elasticity;non-woven tubes focus on the preparation of multi-layer tubes,with a unique fiber arrangement structure,but their pores are uneven,stability is poor and strength is low;the braided tubes can be shaped flexibly,with uniform pore structure,adjustable pores,and high axial strength.Braiding,as an automated manufacturing technology with faster speed and higher efficiency,has been widely applied in various fields.The manufacturing process of braided tubes is relatively simple,and the structure and performance of braided tubes can be changed by changing parameters to meet the needs of different complex product designs.In recent years,research on braided tubes has become increasingly in-depth.For braided tubes,the structure and performance can be changed by changing the braiding material and braiding parameters.Currently,high-performance materials such as medical materials,conductive materials,and high-temperature oxidation resistant materials have been used to prepare braided tubes suitable for different fields,demonstrating the unique advantages and application potential of braided tubes.In terms of braiding parameters,there has been a series of progress in the study of braiding angles and mechanical properties of braiding tubes from theory to application.However,there is a lack of systematic research on the relationship between parameters such as number of braiding layers,number of braiding yarns,and core shaft specifications and the pore structure and performance of braiding tubes.In addition,scholars have studied the impact of new structures such as different pore structures,structures with different braiding angles,mixed yarn structures,and elastic structures on the performance of braided tubes.Therefore,it is necessary to systematically summarize the relationship between braiding parameters and the structural performance of braided tubes.Explaining the relationship between braiding parameters and the structural performance of braided tubes has practical guiding significance for the subsequent structural design,and can scientifically guide researchers in preparing ideal braided tubes.
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