Synthesis of a heat‐resistant DOPO derivative and its application as flame‐retardant in engineering plastics. Issue 22 (7th February 2017)

• Record Type: Journal Article
• Authors: Xie, Mingchen; Zhang, Shimin; Ding, Yanfen; Wang, Feng; Liu, Peng; Tang, Hanying; Wang, Yintao; Yang, Mingshu
• Is Part Of: Journal of applied polymer science. Volume 134:Issue 22(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-02-07
• Subjects: DOPO derivative -- engineering plastics -- flame‐retardant -- halogen‐free; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.44892
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: A star‐shaped DOPO derivative (GL‐3DOPO, P content 10.8 wt %) was synthesized through a two‐step reaction involving glycerol, acryloyl chloride, and DOPO. The derivative demonstrated a great improvement of thermal decomposition temperature increased to 360 °C from 194 °C (under N2 atmosphere), promoting its application in thermoplastics of high processing temperature. When blended with engineering plastics including PET, PBT, PC, PA6, and PA66 at a GL‐3DOPO loading of 25 wt %, all the compounds reached the UL94 V‐0 level and increased limit oxygen index (LOI). In PET system, LOI raised from 22.8% to 35.4% with P 2.5 wt % and passed the V‐0 test with only 0.8 P wt %. Compact char layers were found in the PET system after LOI test, suggesting that GL‐3DOPO acted both in gas and condensed‐phase mode. All results indicated that GL‐3DOPO could be a potential flame‐retardant for engineering plastics. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2017, 134, 44892. Abstract :