College of Environment and Safety Engineering, Key Laboratory of Rubber-plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science and Technology, Qingdao, Shandong 266042, PR China.
College of Environment and Safety Engineering, Key Laboratory of Rubber-plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science and Technology, Qingdao, Shandong 266042, PR China.
J Hazard Mater. 2017 Jun 15;332:176-184. doi: 10.1016/j.jhazmat.2017.02.019. Epub 2017 Feb 24.
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 thermogravimetric analysis/infrared spectrometry (TG-IR) and limiting oxygen index (LOI), etc. The SDT results showed that the luminous flux (LF) of TPU4 containing 2.00wt% HGM was up to 24% at the end of test without flame, which is much higher than that of TPU0 (5%). And, the CCT results indicated that 2.00wt% HGM could make the total smoke release (TSR) decrease from 1019m/m (TPU0) to 757m/m (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.
如今，降低热塑性聚氨酯（TPU）的火灾风险是消防安全材料领域的一个重要研究方向。本文使用空心玻璃微珠（HGM）来降低 TPU 在燃烧过程中的火灾风险。采用烟密度测试（SDT）和锥形量热仪测试（CCT）评估了 TPU 复合材料的火灾特性，包括烟雾和热量的产生。进一步通过热重分析/红外光谱（TG-IR）和氧指数（LOI）等方法研究了热分解和可燃性。SDT 结果表明，含有 2.00wt% HGM 的 TPU4 在测试结束时没有火焰，其光通量（LF）达到了 24%，比 TPU0（5%）高得多。而且，CCT 结果表明，2.00wt% HGM 可使总烟雾释放量（TSR）从 TPU0 的 1019m/m 降低至 TPU4 的 757m/m，减少了 26%。TG-IR 结果证实 HGM 可以提高复合材料的热稳定性，减少一些有毒气体的产生。上述结果表明，HGM 在降低 TPU 的火灾风险方面具有广阔的应用前景。
