高含量玻璃纤维增强PA66/PA6I复合材料的制备及性能研究
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摘要
采用双螺杆挤出机制备了高含量玻璃纤维增强聚酰胺66 (PA66)/聚间苯二甲酰己二胺(PA6I)复合材料,对不同配比的复合材料进行了表面性能、成型收缩率、吸水率、热变形温度、力学性能的研究。结果表明,添加PA6I可以有效改善复合材料的表面性能,当PA6I含量大于10%时,复合材料表面浮纤消失;复合材料的成型收缩率、吸水率、热变形温度均随着PA6I含量的增加而降低,复合材料的力学性能随着PA6I含量的增加先增加后降低;当PA6I含量为10%时,复合材料的拉伸、弯曲、缺口冲击性能均达到最大值。
High content glass fiber reinforced polyamide 66( PA66)/poly( hexamethylene isophthalamide)( PA6I) composite material was prepared by a twin screw extruder. The surface property,molding shrinkage, water absorption rate, heat-distortion temperature and mechanical properties of the composite material with different proportions were investigated. The results show that the surface property of composite material is improved with the addition of PA6 I. When the PA6 I content is more than 10%,the surface floating fiber of composite material disappears. The molding shrinkage,water absorption rate and heatdistortion temperature of the composite material decrease with the increase of PA6 I content, and the mechanical properties of composite material increase first and then decrease with increasing PA6 I content.When the PA6 I content is 10%,the tensile strength,flexural strength and charpy notch impact strength could achieve the maximum value.
High content glass fiber reinforced polyamide 66( PA66)/poly( hexamethylene isophthalamide)( PA6I) composite material was prepared by a twin screw extruder. The surface property,molding shrinkage, water absorption rate, heat-distortion temperature and mechanical properties of the composite material with different proportions were investigated. The results show that the surface property of composite material is improved with the addition of PA6 I. When the PA6 I content is more than 10%,the surface floating fiber of composite material disappears. The molding shrinkage,water absorption rate and heatdistortion temperature of the composite material decrease with the increase of PA6 I content, and the mechanical properties of composite material increase first and then decrease with increasing PA6 I content.When the PA6 I content is 10%,the tensile strength,flexural strength and charpy notch impact strength could achieve the maximum value.
引文
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