Design of a novel multilayer low‐temperature protection composite based on phase change microcapsules. Issue 20 (11th January 2019)

• Record Type: Journal Article
• Authors: Sun, Yanli; Wang, Rui; Liu, Xing; Fang, Shu; Li, Danyang; Li, Bo
• Is Part Of: Journal of applied polymer science. Volume 136:Issue 20(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-01-11
• Subjects: low‐temperature protection composite -- phase change microcapsules -- the low temperature resistance time -- ultra‐low temperature environment; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.47534
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: It is necessary to develop a novel low‐temperature protective material that ensures the flexibility and warmth of operation in a short time under the low‐temperature environment (−30 to −80°C). Hence, a novel multilayer low‐temperature protection composite (MPC) was prepared based on phase change microcapsules (microPCMs). MicroPCMs containing n‐octadecane with melamine‐urea‐formaldehyde shell were successfully synthesized through in situ polymerization. Then the microPCMs were finished on the basic fabric's surface (biocomponent spunbond‐spunlace nonwoven material) by foam coating and the silicone rubber was covered on the outermost surface. On the basis of scanning electron microscope (SEM) micrographs, microPCMs had a relatively spherical shape and a smooth surface, in which the average particle size was about 42.77 μm. The cross section morphology showed that the MPC was consisted of three layers structure including the base fabric, the microPCMs layer, and the silicone rubber layer. At −50 °C, the low‐temperature resistance time of the MPC was 727 s and the power consumption for maintaining a certain temperature for 10 and 20 min of the MPC were 350.86 and 1392.66 J, respectively. Compared with the basic fabric, which has the same thickness as the MPC, the low‐temperature resistance time of the MPC was prolonged about 5 min and the power consumption of the MPC for 10 min decreased by 55%, and for 20 minutes decreased by 33%, respectively. The MPC could guarantee the low‐temperature protection effect in short time. It could be applied as the potential materials in the area of low‐temperature protection. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2019, 136, 47534. Abstract :