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

作者：Lin, Ting An; Lin, Jia-Horng; Lin, Ting Ru; Lin, Jan-Yi; Lin, Mei-Chen; Lou, Ching-Wen^*

来源：Journal of Sandwich Structures and Materials, 2020, 22(6): 2075-2088.

DOI：10.1177/1099636218789603

• Electromagnetic shielding effectiveness
• far-infrared emissivity
• flame retardance
• heat treatment
• sandwich structure
• composite boards

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 degrees lamination.

• 出版日期2020-9
• 单位中国医科大学; 闽江学院; 天津工业大学; 青岛大学