Three-Dimension Unseparated Warp Knitting Insulation Con-Posites Weaving Performance And Insulation Properties Research

In recent years, along with the rapid development of modern science and technology,whether it be big to defense science and technology, aviation enterprise, or small to buildingcivil field, the composite material is the increasingly high demanded, but the textilecomposites than the traditional material has incomparable structural and functional, hasbecome an important new material field leading materials.3-D whole sandwich compositematerials as one of the textile composites, as it happens is catering to the modern textilecomposites to lightweight development trends and this3-D sandwich plate whether in theresearch or development work is bound to become hotspot.At present, Domestic and abroad has researched on this kind of light weight, highstrength3-D sandwich plate a lot, but most are metal, the foam as sandwich structure, and theupper and lower panel by welding or bonding together, this material easy layered, impactresistance ability so poor. Then with the technique of suture in foam sandwich compositematerials of the successful application and successful development of three dimensionalwhole woven plate out of the appearance, to some extent, effective to solve the resistance ofthe material shear ability is poor, face to the core layer shortcomings. For the threedimensional whole the warp knitting composite materials (face-core one) is not the relatedresearch, based on the structure characteristics of the warp knitting knitted fabric itself,integral sex is good, core material can design the gender is strong, high efficiency, theresearch and development of3-D whole the warp knitting composite materials is imperative.This topic is a glass fiber as a raw material, on double needle bed warp knitting machinefor the warp knitting fabric weaving interval, mainly discusses the twin needle bed the warpknitting machine in the glass fiber woven realize double the knitting performance,respectively for fiber glass yarn structure parameters and weaving technology parameters twodirection as the main line, probes into the glass fiber yarn fineness and single fiber diameter,glass fiber yarn twist and weaving process to the glass fiber yarn of surface treatment ofinfluence on the performance of the weaving, weaving process parameters are adopted inweaving process on different machines to weave, from the needle type selection, knittingelements choice and control of yarn tension of fitness, the type of make up for discussion.Draw the glass fiber woven into a circle of attention and suitable for double needle bed thewarp knitting machine woven glass fiber yarn yarn and weaving machine type. In warpknitting precast composite technology, also on the resin composite was investigated, theduplex structure with hollow prefabricated parts in resin composite, whether it be hand lay-upprocess or vacuum auxiliary molding process will take special experimental methods, andvacuum auxiliary molding process is studied, the vacuum auxiliary forming technology to getmore suitable for this kind of structure of the plate forming. In a composite of resin contentwhen strictly calculation and control, ensure soak glue even, in and cure process, strict controlof time. This topic is also testing3-D whole of warp knitting composite material heatperformance, and analys the material for the thermal insulation of the basic theoreticalmechanism, we can get the apparent density board, spacer layer fiber volume fraction andspacer layer structure design of the intersection including how many whole compound panel all have influence three dimensional warp knittingthermal insulating properties.Through this topic research realized the glass fiber woven by simple single knittingperformance to double-sided weave of major across. From three dimensional warp knittingsuccess weave, resin composite forming get plank and heat insulation performance test, andthen to the properties of heat insulation, It is concluded that the plate as the heat insulationboard has certain feasibility, in theory for future continue to further research and developmentand provide some theoretical foundation, at the same time, further expand the applicationfields of warp knitting knitted fabric, with a great development potential.3-D whole heatinsulation plate of warp knitting put forward is very important, and has the certain innovationin the practical application of society.