天然长竹纤维的分离机理及其制备方法初探

Separating mechanism and preparation method of the longer natural bamboo fiber.

该文阐述了目前天然长竹纤维的制备方法及存在的问题,介绍了作者提出的热-机械耦合开纤方法.该方法基于断裂力学理论,使竹材在热-机械载荷协同作用下,利用竹子纤维和基体之间裂纹的扩展实现竹子纤维的分离.本文着重从宏观力学的角度分析了竹子开纤过程中,初始裂纹的生成及其扩展的行为以及相应的载荷条件,提出了用该方法实现竹子纤维分离的条件和主要影响参数.

This paper expounds the present methods of making long natural bamboo fiber and their problems, puts forward a new method to unfasten bamboo fiber, ie hot-machine coupling method invented by the authors. The method is based on the fracture mechanics theory, under the combined force of heat and machine load on bamboo plate, realizes the separation of bamboo fibers by the propagating crack between bamboo fiber and matric. The research mainly analyzed the behavior of making original crack in bamboo and propagating crack as well as their load conditions by macromechanics. Finally, the conditions and main factors to unfasten bamboo fiber by this method was put forward.