Journal of Thermal Analysis and Calorimetry

, Volume 117, Issue 2, pp 857–866 | Cite as

Synergistic effects between hollow glass microsphere and ammonium polyphosphate on flame-retardant thermoplastic polyurethane

  • Xilei Chen
  • Yufeng Jiang
  • Chuanmei Jiao


It is mainly studied that the smoke-suppression properties and synergistic flame-retardant effect of hollow glass microsphere (HM) in flame retardant thermoplastic polyurethane (TPU) composites based on ammonium polyphosphate (APP) as a flame-retardant. Also, the smoke suppression properties and flame-retardant effect were investigated by smoke density test (SDT), cone calorimeter test (CCT), limiting oxygen index, and thermogravimetric analysis, separately. The char residues left after CCT were examined by scanning electron microscopy. The data of SDT shows that HM could effectively decrease smoke production of TPU composites. The results of CCT reveal that the system of APP/HM could reduce heat release rate, smoke production rate, and total smoke release. It is shown that APP/HM is a good system with smoke-suppression and synergistic flame-retardant properties in flame-retardant TPU composites.


Smoke suppression Flame retardancy Hollow glass microsphere Thermoplastic polyurethane Ammonium polyphosphate 



The authors gratefully acknowledge the supports received from the National Natural Science Foundation of China (No. 51106078, No. 51206084), and the Out-standing Young Scientist Research Award Fund from Shandong Province (BS2011CL018).


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  1. 1.College of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdaoPeople’s Republic of China

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