Thermal Jacket Design Using Cellulose Aerogels for Heat Insulation Application of Water Bottles

Ng Nian,Koh Wei,Hong Lim,Ka-Shing Chung,Wen Lim,Hai Duong,An Li,Kenneth Tan,Ziyang Xie

doi:10.3390/fluids2040064

Abstract

Thermal jacket design using eco-friendly cellulose fibers from recycled paper waste is developed in this report. Neoprene as an outmost layer, cellulose aerogels in the middle and Nylon as an innermost layer can form the best sandwiched laminate using the zigzag stitching method for thermal jacket development. The temperature of the ice slurry inside the water bottle covered with the designed thermal jackets remains at 0.1 °C even after 4 h, which is the average duration of an outfield exercise. Interestingly, the insulation performance of the designed thermal jackets is much better than the commercial insulated water bottles like FLOE bottles and is very competition to that of vacuum flasks for a same period of 4 h and ambient conditions.

Highlights

Soldiers in the Armed Forces (AF) regularly can embark on vigorous physical activities in a hot and humid training environment
The military canteen without the insulated jacket shows a significant increase in temperature after 30 min, the worst heat insulation performance
Despite having the best result, the vacuum flask posed some concerns in terms of heavier weight load and higher costs when compared with the other 3 in Appendix A Table A1 it is not ideal to replace the current military canteens that are used by the soldiers with the vacuum flask bottles

Summary

Introduction

Soldiers in the Armed Forces (AF) regularly can embark on vigorous physical activities in a hot and humid training environment. The military canteen is an essential piece of equipment to contain fluid, which provides sufficient rehydration for each soldier during training and prevents the onset of heat-related injuries [1]. Heat injury is often a consequence of prolonged activity under hot and humid conditions, which is exacerbated by dehydration and failure to replenish lost bodily fluids. Despite an extensive list of heat management guidelines, heat injuries still occur from time to time in the AF. It can be done more to prevent the very occurrence of heat injury during training. Several sports science studies [2,3] have stated that lower core body temperature and longer work tolerance time can be achieved by ingesting ice slurry before and during physical exercise

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Discussion

Conclusion