Infrared camouflage fabric prepared by paraffin phase change microcapsule with Good thermal insulting properties

Abstract

With the rapid development of infrared detection technology and infrared precision guidance of weapons, infrared camouflage has important meanings. Paraffin, a kind of phase change material (PCM) is used as the core material of microcapsules and urea-formaldehyde resin as a shell material to prepare phase change microcapsules (MPCMs) by in-situ polymerization, and then coated on the fabric to get infrared camouflage fabric. Ultrasound cell pulverizer is used for phacoemulsification with short emulsification time to obtain uniform and stable emulsion. The as-prepared fabric was characterized by scanning electron microscopy (SEM), infrared thermal imaging test, thermogravimetric analysis (TG), differential scanning calorimetry (DSC), and temperature change test. The encapsulation ratio of the MPCMs was calculated to be 60.1 %. The average particle size of the MPCMs was 425.7 nm. Compared to unfinished fabrics, infrared camouflage fabrics can reduce temperatures by 5–10 ℃ and so is the infrared emissivity. The results showed that the prepared fabric had a certain degree of infrared camouflage ability since the ability to adjust with temperature changes is significant and infrared heat radiation can be effectively reduced. Based on these effects we believe this study can offer a promising strategy for the preparation of infrared camouflage fabrics both on laboratory and industrial scales.