Synthesis, flame retardancy, and thermal degradation behaviors of novel organo-phosphorus compounds derived from 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)

A series of novel organo-phosphorus compounds was synthesized from 9,10-dihydro-9-oxa-10-phosphaphenanthrene- 10-oxide (DOPO) in an attempt to obtain high phosphorus (P) containing halogen-free flame retardant (FR). The success of synthesis was confirmed by 1H and 31P NMR spectra. The P content of FR varied from 12.95 to 19.22 wt%. Thermal stabilities of synthesized FRs and their flame retardancy for Acrylonitrile-Butadiene- Styrene copolymer (ABS) were investigated by thermal gravimetric analysis (TGA) and the classification of UL-94 V-0 rating, respectively. 27.5-30.0 wt% FR loadings gave the V-0 rating for the ABS/FR mixtures and no fume emission was observed. It was found that the flame retardancy strongly depends on the P content of FR and 5.03-5.30 wt% P is required in the formulation to exhibit self-extinguishing ability when phosphinate or phosphonate FRs are employed. The mode of flame retardancy action is also discussed.

Title:	Synthesis, flame retardancy, and thermal degradation behaviors of novel organo-phosphorus compounds derived from 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)
Authors:	Kim, W. Hoang, D.Q. Vothi, H., (...) An, H., Kim, J.
Keywords:	ene-styrene copolymer (ABS), flame retardant;organo-phosphorus, phosphorus content9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), acrylonitrile-butadi
Issue Date:	2016
Publisher:	Polymer Society of Korea
Citation:	Scopus
Abstract:	A series of novel organo-phosphorus compounds was synthesized from 9,10-dihydro-9-oxa-10-phosphaphenanthrene- 10-oxide (DOPO) in an attempt to obtain high phosphorus (P) containing halogen-free flame retardant (FR). The success of synthesis was confirmed by 1H and 31P NMR spectra. The P content of FR varied from 12.95 to 19.22 wt%. Thermal stabilities of synthesized FRs and their flame retardancy for Acrylonitrile-Butadiene- Styrene copolymer (ABS) were investigated by thermal gravimetric analysis (TGA) and the classification of UL-94 V-0 rating, respectively. 27.5-30.0 wt% FR loadings gave the V-0 rating for the ABS/FR mixtures and no fume emission was observed. It was found that the flame retardancy strongly depends on the P content of FR and 5.03-5.30 wt% P is required in the formulation to exhibit self-extinguishing ability when phosphinate or phosphonate FRs are employed. The mode of flame retardancy action is also discussed.
Description:	Macromolecular Research Volume 24, Issue 1, 1 January 2016, Pages 66-73
URI:	http://link.springer.com/article/10.1007%2Fs13233-016-4012-x http://repository.vnu.edu.vn/handle/VNU_123/34070
ISSN:	15985032
Appears in Collections:	Bài báo của ĐHQGHN trong Scopus