玄武岩纤维长度对麦秸秆/PBS发泡复合材料力学性能的影响

Effect of basalt fiber length on mechanical properties of wheat straw/PBS foam composites

以麦秸秆/PBS发泡复合材料为基础,玄武岩纤维(BF)为增强纤维,制备了BF/WS/PBS发泡复合材料.研究了BF纤维长度对WS/PBS发泡复合材料力学性能的影响.结果表明,BF纤维的添加使复合材料的力学性能显著提高,随着BF纤维长度的增加,复合材料的弯曲强度和弯曲模量先增大后减小,拉伸强度和冲击强度随纤维长度的增加而下降.当BF-WS总量为10%时,3 mm BF纤维增强复合材料拉伸强度比未添加BF纤维的提高了14.6%,6 mm BF纤维增强复合材料的弯曲强度达到最大值29.64 MPa,击强度分别比未添加BF纤维的提高了47.6%.当BF-WS总量增加至20%时,3 mm BF纤维的承载效果更加明显,其拉伸强度比未添加BF纤维的复合材料提高了27.5%.

Based on wheat straw/PBS foam composites,basalt fiber（BF） was used as reinforcing fiber,and BF/WS/PBS foam composites were prepared.The effect of BF fiber length on the mechanical properties of WS/PBS foam composites was studied.The results show that the mechanical properties of the composites increase significantly with the addition of BF fibers. With the increase of the length of BF fiber,the flexural strength and flexural modulus of the composites increased and then decreased.When the total amount of BF-WS is 10%,the tensile strength of 3 mm BF fiber reinforced composites is 14.6% higher than that of non-added BF fibers,and the bending strength of 6 mm BF fiber reinforced composites reaches the maximum value of 29.64 MPa,compared with the addition of BF fiber increased by 47.6%. When the total amount of BF-WS is increased to 20%,the bearing effect of 3 mm BF fiber is more obvious,and its tensile strength is 27. 5% higher than that of the composite without BF.