Research On The Properties Of Caper Fiber And Braided Fabric

Natural grass fabric used in caps is very popular among consumers because of its superperformance. However, with the development of the society and economy and the improvementof people’s living standard, fewer and fewer people are willing to be engaged in farming,especially the planting of natural grass fabric whose economic benefit is not very considerable.In such a prosperous era of chemical fiber, the limitation of grass products has been growing dayby day. So instead of grass fabric used in cap, chemical fabric has a very good market prospect.Thus the study of structure and performance of those two fabric comes, and further, it isnecessary to make a comparative study to find out their similarities and differences.This project firstly gives basic performance tests to nine hatting fibers including mat grass,twine (dyeing), heald wire grass, langya grass, salt grass, cattail grass, paper yarn, lala grass, saltystraw rope, using scanning electron microscope to observe their morphological structure, infraredspectrum and EDS to analyses fiber’s chemical components,and research fiber’s mechanicalproperty, dyeing property and thermal property. The result shows that these nine hatting fiber andnatural cap with grass fiber’s surface have oval stomas, while the artificial twine’s surfacedoesn’t has any stoma, only with some gaps seen.The internal structures of the fibers aredifferent: Natural cap with grass fiber bundle is all spirally arranged, but the artificial twinedoesn’t have such forms. The infrared spectrogram of different types of cap fabric is similar.They all have the feature of cellulosic fiber. They are all cellulosic fiber, and the contents of Cand O are both above93.77%. The relative intensity of cap fabric rank successively:saltgrass>twine (dyeing)>lala grass>mat grass>heald wire grass>langya grass>salty strawrope>paper yarn>cattail grass. The dyeing property of the paper rope is much better than thenatural cap grass fiber. The TG curve of the cap fabric is a set of smoothing S curve, similar tothe TG curve of the cotton.Then tests are made to the seven basic performances of the cap fabric, including abrasion,moisture regain, UPF values, resistance to UV aging and wicking. And fuzzy comprehensiveevaluation is used to evaluate the overall performance of the cap fabric. The study shows that the ascending order of the mass loss rate is mat grass, paper yarn, twine (dyeing),cattail grass,salt grass,langya grass,heald wire grass. They all have low moisture regain and moisture content.UPFvalues are arranged in the decreasing order of mat grass fabric, twine (dyeing), cattail grass fabric,heald wire grass fabric, langya grass fabric, salt grass fabric, paper yarn cap.After the UVirradiation, the colors of those fibers shift to yellow; the relative intensity and the UVF havesomehow declined. The wicking rate of artificial spinning cap and paper rope (dyed) is greaterthan the natural grass fabric used in cap. The overall performance of the cap fabric is arrangedthrough the method of fuzzy comprehensive evaluation, the merits in turn:twine (dyeing)> matgrass fabric> paper yarn cap> salt grass fabric>heald wire grass fabric>cattail grass fabric>langya grass fabric. It turns out that the overall performance of synthetic paper rope fabric isbetter than the natural grass fabric used in cap, and paper rope(dyed) is a little better than grasscloth seats, and salty grass fabric ranks the last.Furthermore,28synthetic fiber fabrics designed for manufacture cap were made usingdifferent weft and warp yarn classified on the basis of their material. Such fabrics were tested onabrasive resistance, air permeability, UPF value, break strength, conduction performance andUltraviolet resistance performance, and the results were afterwards analyzed by software such asSPSS、Origin trying to decide the effect of the original material had on the performance ofdifferent fabrics. The steps for mentioned shows: the quality of fabric improves as thepercentages of nylon, polyester, acrylic and polyethylene fiber increase; quality loss ratioincreases when polyester decreases in percentage. It also turns out polypropylene have littleeffect on abrasive resistance performance. air permeability gets better when nylon,polyester andacrylic increase, performance poorly when polyester and polyethylene fiber increase and hardlyaffected by polypropylene fiber. UPF value goes up when nylon,polyester and acrylic fiberweighs more in the make up, goes down when polypropylene fiber increases, there was nodramatical changes when polyethylene fiber was reduced or added. Break strength gets betterwhen nylon, polypropylene fiber and polyethylene fiber increase, acts poorly when acrylic andmodified polyester increases, while polyester has no so much effect on it.Wicking height reduceswhen nylon,polyester and polypropylene fiber increases, heightened when acrylic and modifiedpolyester increase,not it was drastically affected by acrylic alone but rarely no changes wheninfluenced by polyethylene fiber. Most of such synthetic fiber fabrics were negatively affected on break strength and UPF value when exposed to Ultraviolet rays.It has been found that only chemical and blended fabric is mixed with some Polythenefiber, others are all the same with straw plaits in abrasion performance, and their mass lose rateare all lower than2%, by contrasting straw plaits with chemical and blended fabric. The UPF ofnatural straw plaits is higher than chemical and blended fabric, but its ultimate strength and coresuction height are lower than chemical and blended fabric’s. Ultra violet would do more damageto natural straw plaits hat than chemical and blended fabric hat. After illumination, the UPF ofstraw plaits are all lower than before, except that of Bulrush; while most chemical and blendedfabric’s UPF are lower, except for a small number whose UPF are higher than beforeillumination.