亚麻落麻纤维增强可降解复合材料的杨氏模量预测

Flax noil fibers reinforced polylactide composites were prepared by means of non-woven method and hot pressing technology. The effects of volume fraction on Young moduli of the composites were discussed. The Weibull probability distributing feature of natural fibers was proved, then based on Cox Young Modulus model and some related modified theories, a new model for predicting discontinuous natural fibers reinforced biodegradable composite(D-NFRBC) was proposed, which contain the effect of probability distributing features of fibers moduli, length and fibers tropism angle on the Young Moduli of the composites. The results reveal that the Young moduli reach a peak at the fibers volume fraction of 39.6%, the prediction of the modified model increase by 3.67% than the unmodified one, and the predicted values calculated by the new model agree well with the experimental values.