NDLI: Synthesis of a novel highly effective flame retardant containing multivalent phosphorus and its application in unsaturated polyester resins

Content Provider	Royal Society of Chemistry (RSC)
Author	Lin, Yongqiang Shi, Xingxing Chen, Guohua Gui, Zhou Peng, Xiangfang Jiang, Saihua Li, Guohui
Copyright Year	2016
Abstract	Unsaturated polyester resin (UP) as one of the most important thermoset materials often exhibits serious fire hazards. Conventional phosphorus-containing reactive flame ratardants could overcome the deficiency of additive flame retardants in UP, but they always present low flame-retardant efficiency. Herein, a novel reactive flame retardant containing multivalent phosphorus (−1 and +5), 2-((((6-oxidodibenzo[c,e][1,2]oxaphosphinin-6-yl)methoxy)(phenoxy)phosphoryl)oxy)ethyl acrylate (DHP), was successfully synthesized and introduced into unsaturated polyester resin (UP). The structure of DHP was confirmed by Fourier transform infrared spectroscopy (FTIR) and Nuclear Magnetic Resonance (NMR). The introduction of DHP (≤20 wt%) significantly improved the flame retardancy of UP/DHP composites, e.g., it increased the limiting oxygen index (LOI) from 23.0% to 29.0%, decreased the peak heat release rate (PHRR) by 37.2% and passed the UL94 V-0 rating. Thermal degradation analysis by thermogravimetric analysis (TGA) and thermogravimetric analysis-infrared spectrometry (TG-IR), combined with the char analysis by Scanning Electron Microscopy (SEM) demonstrate that the presence of multivalent phosphorus makes DHP in the composites not only reduce flammable gas amounts and capture free radicals in the gas phase, but also catalyze char formation in the condensed phase. This work, which combines gas phase strategy and condensed phase strategy in one flame retardant, provides a promising approach for the flame retardance of polymers, and would also stimulate more efforts to explore highly-effective flame retardants.
Starting Page	86632
Ending Page	86639
Page Count	8
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	6
Issue Number	89
Journal	RSC Advances
DOI	10.1039/c6ra19798a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Infrared spectroscopy Polyester Thermosetting polymer Oxygen Thermogravimetric analysis Thermal decomposition Flame retardant Phosphorus Nuclear magnetic resonance spectroscopy Scanning Electron Microscopy Scanning electron microscope Polyester resin Fourier League of Ireland Resin Acrylate Char Methoxy group
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

The fire retardant mechanism of ethylene vinyl acetate elastomer (EVM) containing aluminium trihydroxide and melamine phosphate

Recent Advances in Bio-Based Additive Flame Retardants for Thermosetting Resins

Preparation and properties of flame-retardant epoxy resins containing reactive phosphorus flame retardant

Development of halogen-free flame retardant phosphazene and rice husk ash incorporated benzoxazine blended epoxy composites for microelectronic applications

Modification of epoxy resin through the self-assembly of a surfactant-like multi-element flame retardant

Bio-based nickel alginate and copper alginate films with excellent flame retardancy: preparation, flammability and thermal degradation behavior

Construction of flame retardant nanocoating on ramie fabric via layer-by-layer assembly of carbon nanotube and ammonium polyphosphate

A Novel Phosphorus-Containing Polymer as a Highly Effective Flame Retardant

Flame-retardant Unsaturated Polyester Resin Incorporating Nanoclays

Synthesis of a novel highly effective flame retardant containing multivalent phosphorus and its application in unsaturated polyester resins

Similar Documents

The fire retardant mechanism of ethylene vinyl acetate elastomer (EVM) containing aluminium trihydroxide and melamine phosphate

Recent Advances in Bio-Based Additive Flame Retardants for Thermosetting Resins

Preparation and properties of flame-retardant epoxy resins containing reactive phosphorus flame retardant

Development of halogen-free flame retardant phosphazene and rice husk ash incorporated benzoxazine blended epoxy composites for microelectronic applications

Modification of epoxy resin through the self-assembly of a surfactant-like multi-element flame retardant

Bio-based nickel alginate and copper alginate films with excellent flame retardancy: preparation, flammability and thermal degradation behavior

Construction of flame retardant nanocoating on ramie fabric via layer-by-layer assembly of carbon nanotube and ammonium polyphosphate

A Novel Phosphorus-Containing Polymer as a Highly Effective Flame Retardant

Flame-retardant Unsaturated Polyester Resin Incorporating Nanoclays

Synthesis of a novel highly effective flame retardant containing multivalent phosphorus and its application in unsaturated polyester resins