Self-assembly of zinc hydroxystannate on amorphous hydrous TiO2 solid sphere for enhancing fire safety of epoxy resin

Wei Wang; Yongchun Kan; Jiajia Liu; Kim Meow Liew; Lei Liu; Yuan Hu

doi:10.1016/j.jhazmat.2017.06.068

Self-assembly of zinc hydroxystannate on amorphous hydrous TiO₂ solid sphere for enhancing fire safety of epoxy resin

J Hazard Mater. 2017 Oct 15:340:263-271. doi: 10.1016/j.jhazmat.2017.06.068. Epub 2017 Jun 28.

Authors

Wei Wang¹, Yongchun Kan², Jiajia Liu¹, Kim Meow Liew³, Lei Liu⁴, Yuan Hu⁵

Affiliations

¹ State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China; Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong.
² State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China.
³ Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong.
⁴ School of Mechanical Engineering, Southeast University, Nanjing 210096, People's Republic of China. Electronic address: [email protected].
⁵ State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China. Electronic address: [email protected].

PMID: 28715749
DOI: 10.1016/j.jhazmat.2017.06.068

Abstract

Zinc hydroxystannate (ZHS) was fabricated on the surface of amorphous hydrous TiO₂ solid spheres (AHTSS) via a layer-by-layer method for improving the fire safety of epoxy resin. AHTSS@PEI@ZHS was prepared by self-assembly of AHTSS, PEI and ZHS. The well-organized fabrication process was proved by TEM, XPS, XRD and SEM tests. TG results illustrated that the incorporation of AHTSS@PEI@ZHS show a higher residue compared with the addition of AHTSS or ZHS alone. In addition, AHTSS@PEI@ZHS filled EP composites exhibits improved flame retardancy and smoke suppression properties evaluated by cone calorimeter test. TG-IR results also indicated that the catalytic labyrinth structure of AHTSS@PEI@ZHS can effectively decrease the permeation of volatile organic compounds, thereby improving the fire safety of EP resin.

Keywords: Epoxy; Fire safety; Self-assembly; TiO(2); Zinc hydroxystannate.