Time dependent deformation has been observed for mulberry (Bombyx mori) and tasar (Antheraea mylitta) silk. In total extension, the creep component for mulberry is found 5.5% and that of tasar is 5%. Instantaneous extension and secondary creep is found 5% and 7.5% for mulberry and 22.5% and 19% of tasar respectively. Such a difference is ascribed to the intrinsic property of filament fineness and related structure of mulberry and tasar.

中文翻译：

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桑蚕和塔萨尔丝绸随时间的变形行为

已经观察到桑蚕（Bombyx mori）和塔萨尔（Antheraea mylitta ）丝的时间依赖性变形。总的来说，桑the的蠕变成分为5.5％，而塔萨尔的蠕变成分为5％。桑树的瞬时延伸和次生蠕变分别为5％和7.5％，而tasar分别为22.5％和19％。这种差异归因于花丝细度的内在特性以及桑and和塔萨尔的相关结构。