A facile method for preparation of PGS@ZB‐N and gas‐sol alternating synergistic effect for fire resistance of EVA. (29th July 2019)

• Record Type: Journal Article
• Authors: Wei, Hong; Li, Li; Ma, Ya‐Li; Liu, Ru‐Xue; Meng, Shuang‐Yan; Niu, Li‐Tong; Zhang, Zhe; Yang, Zhi‐Wang
• Is Part Of: Fire and materials. Volume 43:Number 7(2019)
• Page Start: 868
• Page End: 879
• Publication Date: 2019-07-29
• Subjects: alternating synergistic effect -- dodecylamine -- flame retardancy -- playgorskite -- zinc borate; Fire-testing -- Periodicals; Fire -- Periodicals; Materials -- Periodicals; 620.11217
• DOI: 10.1002/fam.2747
• Languages: English
• ISSNs: 0308-0501

Abstract

Summary: Through the simple precipitation of palygorskite (PGS) by zinc borate (ZB) (to make PGS@ZB) and the decoration of PGS@ZB by dodecylamine (N), a novel organic‐inorganic@inorganic hybrid flame retardant of PGS@ZB‐N was prepared and was incorporated with ethylene vinyl acetate copolymer (EVA) to improve its flame retardance. The structure and morphology of PGS@ZB‐N were characterized by Fourier transform infrared (FTIR) spectroscopy, X‐ray diffraction (XRD), and scanning electron microscopy (SEM), and it was confirmed that the PGS@ZB‐N hybrid had been successfully prepared. The flame retardancy and burning behavior of EVA/PGS@ZB‐N/EG (EG = expandable graphite) composite were studied through thermogravimetric analysis (TGA), limiting oxygen index (LOI), UL‐94 (by the vertical burning test), and cone calorimeter test (CCT) characterizations. The prepared EVA/PGS@ZB‐N/EG composite obtained an LOI value of 41.2% with the addition of 30 wt% PGS@ZB‐N/EG. It was found that EVA/PGS@ZB‐N/EG was protected through a gas phase and condensed phase alternating synergistic effect mechanism.