建築裝修用益膠泥於電磁波屏蔽效益與黏著力之應用研究

On the Electromagnetic Shielding Effectiveness and Adhesion Force of Polymerized Tile Gripper in Buildings

葉勁廷(Jing-Ting Ye)

指導教授 ： 吳傳威 ； 黃昭勳

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2006年)

摘要

本文係採用碳纖維與石墨粉體兩種導電性材料添加於建築裝修用之益膠泥中，製作成具有屏蔽電磁波之黏著材料，將此粉光層塗抹於常用之木芯板、三夾板、麗光板、矽酸鈣板隔間材料上，粉光層厚度固定為2mm。探討添加不同含量之導電材料，對電磁波屏蔽效益與表面電阻係數等電氣性質及黏著強度之影響。
經由實驗結果顯示，於5wt%碳纖維添加量，在300MHz~3GHz之入射頻率下電磁波屏蔽效益可達30~50dB。而於40wt%石墨粉體添加量，在入射頻率450MHz下，電磁波屏蔽效益最高達到22.24dB，後者電磁波屏蔽效益明顯劣於碳纖維者。且於隔間材料中以矽酸鈣板為基底時，電磁波屏蔽效果較佳。於機械性質測試方面，添加導電材料於益膠泥中均會使純益膠泥之黏著強度降低，且黏著強度降低比例平均為50%~60%；若於益膠泥中額外添加壓克力樹脂對粘著強度有補強之效果，約可提升20%之粘著強度。預期此黏著材料可適用於塗抹在房屋牆壁粉刷與黏貼磁磚前之粉光層，以隔絕家電用品或手機基地台所放出之電磁波強度。

關鍵字

導電材料 ； 電磁波屏蔽效益 ； 表面電阻係數 ； 益膠泥

並列摘要

Carbon fiber and graphite powder as the conductive material were used in this study and mixed them with polymerized tile gripper (PTG) to fabricate electromagnetic shielding effectiveness (EMSE) adhesive and applied paste premier layer on partition material, is the lumber core , three-plywood , glossy board and calcium silicate board, premier layer of the regular thickness 2mm. Furthermore, the effects of the conductive material categories and content on the electrical (Surface resistivity and EMSE), and adhesive strength of the polymerized tile gripper in building were investigated.
Experimental results indicated that EMSE could reach 30 to 50dB as the incident frequency from 300MHz to 3GHz with the added amount of 5wt% carbon fiber. EMSE could reach to 30dB as the incident frequency 450MHz with the added amount of 40wt% graphite powder. Therefore, EMSE of PTG with the graphite powder is obviously worse than with the carbon fiber. When calcium silicate board as bases in the partition material, its EMSE has the better performance. In mechanical property testing, the bonding strength of polymerized tile gripper will be decreased by increasing the added amount, and the average deceasing percentage around 50%~60%. If adding the water borne acrylic resin into PTG, it would have reinforcement effect and raise up 20% bonding strenght. The adhesive materials can be applied to paste premier layer on wallboard before mortar or tile work, in order to shielding electromagnetic wave emiited from the home appliance or cellular phone base stations.

並列關鍵字

Electric Conductive Material ； Electromagnetic Shielding Effectiveness ； Surface Resistance Coefficient ； Polymerized Tile Gripper

參考文獻

[1] ANSI A108.10-1999. (1999), “Installation of grout in tilework,” American National Standard Specifications for the Installation of Ceramic Tile, Tile Council of America, Lnc.,pp. 53-54.

[3] G. Savage. (1993), “Carbon-Carbon composites,” Chapman Hall.

[4] G. Antonini, A. Orlandi, S. D’elia. (2003). “Shielding effects of reinforced concrete structures to electromagnetic fields due to GSM and UMTS systems,” Cement and Concrete Research, Volume 26, no.10, pp. 1467-1472.

[5] J. Cao, D.D.L Chung. (2003). “Colloidal graphite as an admixture in cement and as a coating on cement for electromagnetic interference shielding,” Cement and Concrete Research, Volume33, pp. 1737-1740.

[7] M. Q. Zhang, G. Yu, H. M. Zeng, H. B. Zhang, and Y. H. Hou. (1998). “Two-Step Percolation in Polymer Blends Filled with Carbon Black,” Macromolecules, Volume 31, pp. 6724-6726.