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...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%.展开更多
This paper presents an experimental study of a novel K-Cor sandwich structure rein- forced with partially-cured Z-pins. The influence of pultrusion processing parameters on Z-pins characteristics was studied and the e...This paper presents an experimental study of a novel K-Cor sandwich structure rein- forced with partially-cured Z-pins. The influence of pultrusion processing parameters on Z-pins characteristics was studied and the effect of Z-pins on mechanical properties was disclosed. Differential scanning calorimetry （DSC） and optical microscopy （OM） methods were employed to determine the curing degree of as-prepared Z-pins and observe the implanted Z-pins in the K-Cor structure. These partially-cured Z-pins were treated with a stronger bonding link between face sheets and the foam core by means of a hot-press process, thereby decreasing burrs and cracking defects when the Z-pins were implanted into the Rohacell foam core. The results of the out-of-plane tensile tests and the climbing drum peel （CDP） tests showed that K-Cor structures exhibited superior mechanical performance as compared to X-Cor and blank foam core. The observed results of failure modes revealed that an effective bonding link between the foam core and face sheets that was provided from partially-cured Z-pins contributed to the enhanced mechan- ical performances of K-Cor sandwich structures.展开更多
文摘以麦秸秆/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%.
基金the financial support from JPTT project (No.JPTT-1146)
文摘This paper presents an experimental study of a novel K-Cor sandwich structure rein- forced with partially-cured Z-pins. The influence of pultrusion processing parameters on Z-pins characteristics was studied and the effect of Z-pins on mechanical properties was disclosed. Differential scanning calorimetry （DSC） and optical microscopy （OM） methods were employed to determine the curing degree of as-prepared Z-pins and observe the implanted Z-pins in the K-Cor structure. These partially-cured Z-pins were treated with a stronger bonding link between face sheets and the foam core by means of a hot-press process, thereby decreasing burrs and cracking defects when the Z-pins were implanted into the Rohacell foam core. The results of the out-of-plane tensile tests and the climbing drum peel （CDP） tests showed that K-Cor structures exhibited superior mechanical performance as compared to X-Cor and blank foam core. The observed results of failure modes revealed that an effective bonding link between the foam core and face sheets that was provided from partially-cured Z-pins contributed to the enhanced mechan- ical performances of K-Cor sandwich structures.
