Manufacturing techniques and property evaluations of sandwich-structured composite materials with electromagnetic shielding, flame retardance, and far-infrared emissivity. (September 2020)

• Record Type: Journal Article
• Authors: Lin, Ting An; Lin, Jia-Horng; Lin, Ting Ru; Lin, Jan-Yi; Lin, Mei-Chen; Lou, Ching-Wen
• Is Part Of: Journal of sandwich structures & materials. Volume 22:Number 6(2020)
• Page Start: 2075
• Page End: 2088
• Publication Date: 2020-09
• Subjects: Electromagnetic shielding effectiveness -- far-infrared emissivity -- flame retardance -- heat treatment -- sandwich structure -- composite boards; Sandwich construction -- Periodicals; 624.177905
• DOI: 10.1177/1099636218789603
• Languages: English
• ISSNs: 1099-6362

Abstract

This study aims to produce sandwich-structured composite boards with flame retardance, far-infrared emissivity, and electromagnetic shielding effectiveness using nonwoven, weaving processes, and heat treatment. Needle punching and roller-type hot pressing are used to improve their tensile strength, tensile elongation, puncture strength, and burst strength. The limiting oxygen index is 30 regardless of whether the flame retardance/far-infrared emissivity/electromagnetic shielding effectiveness composite board is stainless steel (SS), SS+Ni–Cu (nickel-coated copper), or SS+Ni–Cu+Cu (copper) composite fabrics. SS+Ni–Cu and SS+Ni–Cu+Cu composite boards both have optimal thermal conductivity at the eighth test hour. SS–B composite board exhibit far-infrared emissivity of 0.81; moreover, they have optimal electromagnetic shielding effectiveness of −41dB at 2450 MHz when they are laminated into three layers at a 90° lamination.