Study On The Microvoid Building And Properties Of Silk Fibers

The morphology, structure and characteristic deformation of the silk fiber treated by salt solution is fully and detailedly studied in this paper. The experiment shows that the number of the inner microporosity increases and the satiation of the fibers cross-section increases, and the characteristic properties change radically. The structure and properties of the silk fiber treated by super low temperature freezing is investigated. Also the thermal domino effect and non-thermal domino effect of silk flyers treated by microwave is illustrated. In addition, the morphology, structure and properties of silk fibers are studied when the fibers are treated by super low temperature freezing combined with microwave. And the results are that both super low temperature freezing and short-time microwave irradiating can improve each property of silk fiber, and that long-time microwave irritating or using freeing combined with microwave method can destroy the inner second bond of silk fibers. And because of swelling of the silk per se, the structure become loose and the number of microvoid rise. The microporosity on the surface of silk fibers can be obtained by the low-temperature oxygen plasm treatment while the mechanical properties of the silk fibers barely change. Use computer image process technology to calculate the inner void ratio and lengthwise surface void ratio and find the inner void ratio of single silk treated by the salt solution is the biggest, then is the combined methods (using freezing and microwave irritating together), and then is the microwave irritated silk fibers and the inner void ratio of untreated silk fibers is the smallest. And the rule of whole inner void ratio is contrary to that of the inner void ration. As for lengthwise surface void ratio, the silk fiber treated by plasm is more obvious than untreated silk fibers.