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首页> 外文期刊>Polymers & Polymer Composites >Fibre Orientation and Mechanical Properties of Short Glass Fibre Reinforced PP Composites
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Fibre Orientation and Mechanical Properties of Short Glass Fibre Reinforced PP Composites

机译：短玻璃纤维增​​强PP复合材料的纤维取向和力学性能

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摘要

The fibre orientation and distribution in short glass fibre (SGF) reinforced polypropylene (PP) composites were measured and an orientation function (f) was introduced to describe the fibre orientation distribution.The fibre orientation distribution in the same level plane depended on the fibre position in an injection-moulded plate.The fibres close to the boundary wall of the injection cavity were parallel to the injection direction and those close to the back wall were perpendicular to the injection direction.A commercial maleic anhydride grafted PP (MAPP) was used as a compatibilizer.With the addition of MAPP,the fibre orientation distribution in PP/SGF/MAPP composites was slightly different from that of PP/SGF,but MAPP improved the interfacial adhesion between SGF and PP and consequently the mechanical properties.The use of SGF increased the tensile strength of the PP composites from 26.5 to 45.9 MPa (73% improvement),and for the PP/MAPP/ SGF composite the tensile strength increased further to 55.4 MPa.The effect of SGF on the tensile strength can be expressed by a fibre efficiency factor (gamma_o).The SGF efficiency factor of PP/MAPP/SGF (0.198) was 45% higher than that of PP/SGF (0.137).The impact strength of PP/MAPP/SGF (64.7 MPa) was not only higher than that of PP/SGF (40.8 MPa) by 59% but also higher than that of PP (48.3 MPa) by 34%.
机译：测量短玻璃纤维（SGF）增强聚丙烯（PP）复合材料中的纤维取向和分布，并引入取向函数（f）描述纤维取向分布。在同一水平面上的纤维取向分布取决于纤维位置靠近注射腔边界壁的纤维平行于注射方向，靠近后壁的纤维垂直于注射方向。使用市售的马来酸酐接枝PP（MAPP）作为加入MAPP后，PP / SGF / MAPP复合材料中的纤维取向分布与PP / SGF略有不同，但MAPP改善了SGF与PP之间的界面粘合性，从而改善了机械性能。将PP复合材料的拉伸强度从26.5 MPa增加到45.9 MPa（提高了73％），对于PP / MAPP / SGF复合材料，拉伸强度增加了d至55.4 MPa.SGF对拉伸强度的影响可以用纤维效率因子（γ_o）表示.PP / MAPP / SGF的SGF效率因子（0.198）比PP / SGF的SGF效率因子高45％（ 0.137）.PP / MAPP / SGF（64.7 MPa）的冲击强度不仅比PP / SGF（40.8 MPa）高59％，而且比PP（48.3 MPa）高34％。

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