天然竹纤维基本力学性能研究

BASIC PROPERTIES OF NATURAL BAMBOO FIBER

对竹原纤维及竹浆纤维的基本性能进行了测试分析,通过对各种性能分析比较,得出常温干态下,竹原纤维的断裂强度和初始模量均大于竹浆纤维,断裂伸长率小于竹浆纤维。竹原纤维钩结和结节时的断裂强度急剧下降,不到干态强度的20%,结节强度比钩结强度略大。竹原纤维与金属辊和橡胶辊的摩擦系数大于与纤维辊的摩擦系数,竹原纤维的静摩擦系数和动摩擦系数均小于竹浆纤维。

Basic properties of natural bamboo fiber and bamboo pulp fiber were tested. Through the analysis and comparison of the properties, the following results can be obtained： at normal temperature and dry state, breaking strength and initial modulus of natural bamboo fiber is higher than that of bamboo pulp fiber, but elongation at break is lower; breaking strength of natural bamboo fiber in knotted and looped modality sharply decline, less than 20% of dry strength, and strength in knotted modality is slightly higher than that in looped modality; friction coefficient between natural bamboo fiber and metal roller or rubber roller is higher than be- tween fiber rollers; static friction and dynamic friction coefficient of natural bamboo fiber is lower than that of bamboo pulp fiber.