Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 332, Issue -, Pages 176-184Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2017.02.019
Keywords
Fire hazard; Flame retardant; Thermoplastic polyurethane; Hollow glass microsphere
Categories
Funding
- National Natural Science Foundation of China [51106078, 51206084]
- University Research and Development Projects Shandong Province [J14LA13]
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Nowadays, reducing the fire hazard of thermoplastic polyurethane (TPU) is an important research direction in the fields of fire safety materials. In this article, hollow glass microsphere (HGM) was used to reduce the fire hazard of TPU in combustion process. The fire characteristics including smoke and heat production of TPU composites were evaluated using smoke density test (SDT) and cone calorimeter test (CCT). And the thermal decomposition and flammable properties were further studied using thermo-gravimetric analysis/infrared spectrometry (TG-IR) and limiting oxygen index (LOI), etc. The SDT results showed that the luminous flux (LF) of TPU4 containing 2.00 wt% HGM was up to 24% at the end of test without flame, which is much higher than that of TPUO (5%). And, the CCT results indicated that 2.00 wt% HGM could make the total smoke release (TSR) decrease from 1019 m(2)/m(2) (TPUO) to 757 m(2)/m(2) (TPU4), reduced by 26%. The TG-IR results confirmed that HGM could improve the thermal stability of composites and reduce the production of some toxic gases. The above results illustrated HGM had a good prospect in reducing the fire hazard for TPU. (C) 2017 Elsevier B.V. All rights reserved.
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