Title

金屬複合針織物補強熱可塑性複合材料之電氣與機械性質之研究

Translated Titles

A Study on the Electrical and Impact Properties of the Metallic Hybrid Knitted Fabric Reinforced Polypropylene Composites

Authors

莫凱傑(C. J. Mon);李貴琪(K. C. Lee);鄭國彬(K. B. Cheng)

Key Words

不均勻性複合紗 ; 雙面平紋夾入針織物 ; 導電熱可塑性複合材料 ; 電磁波屏蔽效應 ; 靜電放電電壓衰減率 ; 衝擊強度 ; mcommingled yam ; double plain inlaid knitted fabric ; conductive thennoplastic composites ; electromagnetic shielding effectiveness (EMSE) ; electrostatic discharge (ESD) ; Impact strength

PublicationName

華岡紡織期刊

Volume or Term/Year and Month of Publication

9卷1期(2002 / 03 / 01)

Page #

1 - 13

Content Language

繁體中文

Chinese Abstract

本文已成功採用Kevlar長纖維與碳纖維為強化材,不錫銅纖維與銅纖維 為導電紗,熱可塑性聚丙烯纖維為基材,運用中空綻子式精紡機紡製不均勻 性複合紗,其餘採用不銹銅或不銹鋼/碳纖維為芯紗,聚丙烯纖維為效應紗與 押紗;或以金屬銅絲或金屬銅絲/碳纖維為芯紗,聚丙烯纖維為效應紗、與押紗;或以金屬銅絲/Kevlar長纖維為芯紗,聚丙烯纖維為效應紗與押紗。以不均勻性複合紗為原料,運用5G橫編機製織成雙面平紋與其緯向夾入針織物 結構,續由交叉式手積層方法積層4層,再經熱壓機熱壓成約3rnm厚之導電 熱可塑性複合材料。並探討雙面平紋緯向夾入根數與夾入原料之不同及不銹銅或銅含量對導電熱可塑性複合材料電磁波屏蔽效應、靜電放電性質之影響 以及添加碳纖維與Kevlar長纖維後對其街擊性質之影響。本文亦提出電磁波 屏蔽效應與靜電放電電壓衰減率之測試方法,以檢測導電熱可塑性複合材料 靜電放電電壓之衰減波形與大小及其電磁波屏蔽效益。經由實驗結果顯示, 隨雙面平紋針織物夾入根數與不銹銅或銅含量之增加電磁波屏蔽效應有漸增之趨勢。且在成型性上,隨雙面平紋夾入針織物夾入根數之增加,其型態穩 定性越佳。甚而由於添加碳與Kevlar纖維之故,針織物補強熱可塑性複合材 料之衝擊強度遠較未添加者為佳。本實驗品可適用於300k至3GHz頻率範圍 之電磁波遮蔽材料、抗靜電用複合材料、過濾用複合材料與電子、電機產品 之外殼等用途。

English Abstract

The main targets of tihis research work are to develop stainless steel wire (SS)/polypropylene (PP), SS/carbon C/PP, Cu/C/PP, and Cui Aramid (K)/PP conductive knitted fabrics reinforced PP composites and to investigate their electromagnetic shielding effectiveness (EMSE), electrostatic discharge (ESD) and impact properties. Polypropylene is the matrix phase carbon and Aramid fibers are the reinforcement phase of the conductive composites. Copper and stainless steel wires are incorporated as conductive fillers to provide the ESD and EMSE properties of the composites. The hollow spindle spinning system make SS/PP, Cu/PP, C/K/PP uncOmmingled yams. The double plain knitted and is inlaid fabrics were fabricated by 5G traverse knitted machine with the above uncommingled yarns. Changing the yarn composition, fabric knit structure, and stitch density varies the amount of copper and stainless steel conductive fillers in the composites. 4-py cross laminates by hand, then make 3-mm thickness of conductive thermoplastic composites by using the hot press machine. It is observed that the EMSE and ESD of the composites increase with increasing the incident frequency, especially at higher frequency range. The effects of inlaid ends, materials and constitutions on the electromagnetic shielding effectiveness of the conductive thermoplastic composites were mveshgated. The results indicate that the composites can be used for the purpose of electromagnetic interference (EMI) and electrostatic discharge shielding, as well as for some microwave applications.

Topic Category 基礎與應用科學 > 基礎與應用科學綜合