填充聚氨酯泡沫蜂窝纸板缓冲性能试验

Experimental research on static and dynamic energy absorbing capacity of honeycomb paperboard filled with polyurethane

为了研究复合缓冲材料的缓冲防震性能,将聚氨酯填充到蜂窝纸板的孔隙中制作了聚氨酯蜂窝纸板复合材料并对其进行落锤冲击试验和静态压缩试验。通过试验数据和应力-应变曲线,分析了该复合材料在静态和低速冲击条件下表现的力学行为,进而对其静、动态缓冲吸能性能进行对比研究。结果表明:蜂窝纸板材料的静态、动态吸能量均随孔径的增大而增大,动态吸能量增大的幅值更明显;复合材料的吸能量随蜂窝纸板孔径增大而增大,随纸板厚度增大而减小;复合后的材料较蜂窝纸板材料静、动态缓冲性能和吸能量都有了较大的提高。

To research on the cushion performance of composite buffer material, a kind of composite buffering material was fabricated by filling the voids of honeycomb paperboard with polyurethane. Drop tests and static compression test s were made to evaluate the static and dynamic energy absorption capacity of the material. Based on the tests results, the mechanical behaviors of the material under static and low velocity dynamic impact conditions were analyzed. It is shown that the increase of the dynamic absorbed energy compared with the static absorbed energy of the honeycomb paperboard varies directly with the increasing void diameter. The absorbed energy of the composite material increases directly with the increasing void diameter, and decreases with the increasing thickness. The static and dynamic buffering performance is improved and the absorbed energy of the composite material is increased greatly.