Application of Microcapsules Materials on Textiles for Thermal Insulation

Yasser M.E. Hassan

Apparel Design & Technology Department, Faculty of Applied Arts  Helwan University, Cairo, Egypt

dr_yassereid@yahoo.com

ABSTRACT

The use of phase change materials (pcm) in textiles is an alternative form of improving the insulation of the textiles to the high volume insulation, which is the standard insulation applied when using non-wovens. They can reduce drastically the textile material volume for the same insulation performance. it is also a unique way of transmitting comfort by absorbing excess heat and releasing it when needed. The way PCM  work is explained by the fact that when altering phase, they display a very large latent heat and while doing so they retain the energy and provide insulation. Such materials need to be microencapsulated and fixed onto a textile material, or applied in the form of a film or foam, and it needs to be efficiently done so that they cover the space where the heat is going to flow. One problem is how to evaluate their performance, since this is dynamic heat insulation, different to the classical heat resistance which standard insulation displays. In this work a prototype-measuring instrument was developed to reflect this type of insulation, measuring the heat retention time of the PCM in the textile layers. Results for materials of diferent thickness are given, with and without micro(pcm), and with different amounts of micro (pcm).

Keywords : phase change, insulation, microencapsulated, PCM , thermal.

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