分别以铜、镍、铁粉与利乐包装废弃物、HDPE、硅烷偶联剂为原材料,制备了金属粉/ 利乐包的电磁屏蔽复合材料,研究了不同金属粉体积分数对复合材料的力学性能、耐水性能及电磁屏蔽效能的影响。结果表明,材料的弯曲模量随体积分数的增加基本呈现上升的趋势;随着体积分数的增加,材料的24 h 吸水厚度膨胀率和24 h 吸水率均减小,耐水性依次为Ni/ 利乐>Fe/ 利乐>Cu/ 利乐;金属粉填充量的增加没有显著提高电磁屏蔽效能,电磁屏蔽效能的大小依次为Cu/ 利乐>Ni/ 利乐> Fe/ 利乐。

A novel electromagnetic shielding composite was prepared by using metal particle (Cu, Ni, Fe), tetra pak waste, HDPE, and silane coupling agent. Effect of volume fraction of metal particle was studied on mechanical properties, water resistance, and electromagnetic shielding effectiveness. The results indicated that the flexural modulus rises with the increase of volume fraction on the whole; 24 h thickness swelling rate and corresponding water absorption rate both declines with the increase of volume fraction, and the rank of water resistance is Ni/ tetra pak>Fe/ tetra pak>Cu/ tetra pak; volume fraction doesn't improve the SE value significantly, and the rank of SE value is Cu/ tetra pak>Ni/ tetra pak>Fe/ tetra pak.