人工饲料育蚕蚕丝的结构和拉伸力学性能

随着中国劳动力和土地成本的急剧上升,家蚕养殖产业受到了巨大挑战,全龄工厂化养蚕为中国养蚕业带来了一丝曙光。文章探究了桑叶和人工饲料育家蚕丝的结构和力学性能特点。研究表明:用人工饲料育的家蚕存活率比用桑叶育的家蚕存活率减少了72%左右,平均茧壳质量减小了31%左右,蚕丝平均纤度减小了4%左右。人工饲料组蚕丝与桑叶组蚕丝相比,其基本结构并未发生改变,但相对结晶度更低。人工饲料组蚕丝的断裂强度比桑叶组蚕丝断裂强度小3%左右,断裂伸长率大3%左右。

Structure and tensile mechanical properties of silk fromsilkworm raised with artificial feed

With the sharp rise of labor and land costs in China,the silkworm breeding industry has been greatly challenged,and full-year industrialized silkworm breeding has brought a ray of dawn to China’s silkworm breeding industry.This paper explores the structural and mechanical properties of silk from silkworm raised with mulberry leaves and artificial feed.Results showed that the survival rate of silkworms raised with artificial feed was about 72%lower than that of silkworms raised with mulberry leaves;the average cocoon shell mass decreased by about 31%,and the average fineness of the silk decreased by about 4%.Compared with the silk in the mulberry leaf group,the basic structure of the artificial feed group silk remained unchanged,but the crystallinity was lower.The breaking strength of the silk in the artificial feed group was about 3%lower than that in the mulberry leaf group,and the breaking elongation was about 3%.