用在 5 0 L固相接枝反应器中合成的马来酸酐接枝聚丙烯 ( i PP g MAH)作界面改性剂 ,制备了马来酸酐接枝聚丙烯 /聚丙烯 /硫酸钙晶须 ( i PP g MAH/i PP/Ca SO4 )复合材料 .研究了 i PP g MAH/i PP/Ca SO4 复合材料的形态结构和力学性...用在 5 0 L固相接枝反应器中合成的马来酸酐接枝聚丙烯 ( i PP g MAH)作界面改性剂 ,制备了马来酸酐接枝聚丙烯 /聚丙烯 /硫酸钙晶须 ( i PP g MAH/i PP/Ca SO4 )复合材料 .研究了 i PP g MAH/i PP/Ca SO4 复合材料的形态结构和力学性能 .结果表明 :i PP g MAH对 i PP/Ca SO4 复合物的缺口抗冲强度、弯曲强度和拉伸强度均有增强作用 ;i PP g MAH对硫酸钙晶须填充的 i PP/Ca SO4 复合物表观粘度几乎没有影响 .SEM观察发现 i PP g MAH对硫酸钙晶须填充的 i PP/Ca SO4展开更多
The 6061 aluminum matrix composites reinforced with ZnO-coated Mg_2B_2O_5w were fabricated by squeeze casting method and followed by extruded under a technical equivalent condition. The mechanical properties and micro...The 6061 aluminum matrix composites reinforced with ZnO-coated Mg_2B_2O_5w were fabricated by squeeze casting method and followed by extruded under a technical equivalent condition. The mechanical properties and microstructures of the composites were investigated. The results showed that the elastic modulus of the as-cast composites increased straightly with increasing ZnO coating content. The ultimate tensile strength and yield strength of the as-cast composites rapidly increased initially and then declined with increasing ZnO coating content. However, the elongations of all the as-cast composites had similar values. The elongations of the composites were highly enhanced and the ultimate tensile strength of the composite without ZnO coating was the largest after extrusion. A number of whiskers in the composites with ZnO coating were fractured during the extrusion process, but the whiskers＇ breakage extent was limited with the increase of coating content.展开更多
文摘用在 5 0 L固相接枝反应器中合成的马来酸酐接枝聚丙烯 ( i PP g MAH)作界面改性剂 ,制备了马来酸酐接枝聚丙烯 /聚丙烯 /硫酸钙晶须 ( i PP g MAH/i PP/Ca SO4 )复合材料 .研究了 i PP g MAH/i PP/Ca SO4 复合材料的形态结构和力学性能 .结果表明 :i PP g MAH对 i PP/Ca SO4 复合物的缺口抗冲强度、弯曲强度和拉伸强度均有增强作用 ;i PP g MAH对硫酸钙晶须填充的 i PP/Ca SO4 复合物表观粘度几乎没有影响 .SEM观察发现 i PP g MAH对硫酸钙晶须填充的 i PP/Ca SO4
基金Project(2011CB612200)supported by the National Basic Research Program of China
文摘The 6061 aluminum matrix composites reinforced with ZnO-coated Mg_2B_2O_5w were fabricated by squeeze casting method and followed by extruded under a technical equivalent condition. The mechanical properties and microstructures of the composites were investigated. The results showed that the elastic modulus of the as-cast composites increased straightly with increasing ZnO coating content. The ultimate tensile strength and yield strength of the as-cast composites rapidly increased initially and then declined with increasing ZnO coating content. However, the elongations of all the as-cast composites had similar values. The elongations of the composites were highly enhanced and the ultimate tensile strength of the composite without ZnO coating was the largest after extrusion. A number of whiskers in the composites with ZnO coating were fractured during the extrusion process, but the whiskers＇ breakage extent was limited with the increase of coating content.
