Effect of pyrolysis regeneration technology of aramid material for police equipment based on temperature field optimization

doi:10.19491/j.issn.1001-9278.2022.06.002

Abstract

Abstract:

This work attempts to conduct the resourceful disposal and recycling utilization of aramid weftless fabric ballistic layer in police equipment such as bullet?proof vests or helmets through high?temperature anaerobic pyrolysis with the passage of inert gas. The decomposition of the aramid fibre and adhesive at different pyrolysis temperatures not only destroys the original equipment form and prevents the end?of?life equipment from being recirculated for use， but also makes it decompose to produce flammable gas or extract the fibre yarn that could be used twice. This leads to the achievement of the purpose for the resourceful disposal of police ballistic protection equipment. Combined to the simulation and experimental analysis， an optimal temperature range of 410 ℃ and an optimal location of pyrolysis were obtained.

Key words: pyrolysis, aramid material, police equipment, recycling

CLC Number:

TQ323.4

NI Junjie, GUO Rui, ZHANG Bing. Effect of pyrolysis regeneration technology of aramid material for police equipment based on temperature field optimization[J]. China Plastics, 2022, 36(6): 6-9.

Figures/Tables 8

Fig.1. Aramid non?woven fabric protection products

Fig.2. Electric heating pyrolysis furnace

Fig.3. Simulation schematic diagram

Fig.4. Surface temperature distribution at different heights

Fig.5. TGA atlas of aramid knotless fabric

Fig.6. Pyrolysis temperature curve of experimental group samples

Fig.7. Experimental group samples before and after pyrolysis

Fig.8. Sample before and after pyrolysis at different temperature

References 10

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