【摘要】 针对高分子材料在电磁屏蔽领域的应用前景 ,研究了炭黑质量分数以及夹附铜网对ABS复合平板材料屏蔽效能的影响。结果表明 ,当炭黑质量分数达到 3 5 %时 ,体积电阻率达到最低值 ,约为 10 3 Ω·cm ,屏蔽效能增加到 6dB ;夹附金属网时 ,屏蔽效能达到 3 0～ 40dB。最后在不同频段分析了炭黑用量为 3 5 %的复合材料的电磁波吸收损耗及其损耗机理更多还原

【Abstract】 In the light of the application of polymer material in electromagnetic shielding,the effects of carbon black(CB) mass fraction and copper wire mesh on volume resistivity and electromagnetic shielding effectiveness (SE) of carbon black/ABS flat slab composites were studied.The results indicated that when the CB mass fraction was up to 35%,the volume resistivity was the lowest value 10 3Ω·cm,and the SE was about 6 dB.When the copper wire mesh was sandwiched in the composites,the SE increased to 30～40dB.The reflection loss and loss mechanism of wt35% CB composites in different frequency range were analyzed.更多还原