Effect of borates on thermal degradation and flame retardancy of epoxy resins using polyhedral oligomeric silsesquioxane as a curing agent

Hongyu Yang; Xin Wang; Bin Yu; Lei Song; Yuan Hu; Richard K.K. Yuen

doi:10.1016/j.tca.2012.02.021

Effect of borates on thermal degradation and flame retardancy of epoxy resins using polyhedral oligomeric silsesquioxane as a curing agent

Hongyu Yang, Xin Wang, Bin Yu, Lei Song, Yuan Hu, Richard K.K. Yuen

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

68 Citations (Scopus)

Abstract

A series of flame-retardant epoxy resins containing boron and silicon were obtained through a crosslinking reaction, using tris (2-hydroxypropyl) borate (THPB) together with octaaminophenyl POSS (OapPOSS) as the curing agents. The limiting oxygen index (LOI) reached 30.5% when the contents of boron and silicon in the cured system were 1.5% and 0.5%, respectively, indicating that THPB and OapPOSS exhibited good flame retardant effect on epoxy resins (EP). Microscale combustion calorimetry (MCC) results indicated that the peak heat release rate (PHRR) and total heat release (THR) of the cured systems were reduced by 69% and 46%, respectively, compared to those of pure EP. Moreover, the thermal degradation process and flame retardant mechanism of the composites were investigated by TGA, real time FTIR and TG-FTIR. The chemical components of the char residues were explored by XPS. © 2012 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	71-78
Journal	Thermochimica Acta
Volume	535
DOIs	https://doi.org/10.1016/j.tca.2012.02.021
Publication status	Published - 10 May 2012

Research Keywords

Epoxy resin
Flame retardant mechanism
Flammability
Synergism

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title = "Effect of borates on thermal degradation and flame retardancy of epoxy resins using polyhedral oligomeric silsesquioxane as a curing agent",

abstract = "A series of flame-retardant epoxy resins containing boron and silicon were obtained through a crosslinking reaction, using tris (2-hydroxypropyl) borate (THPB) together with octaaminophenyl POSS (OapPOSS) as the curing agents. The limiting oxygen index (LOI) reached 30.5% when the contents of boron and silicon in the cured system were 1.5% and 0.5%, respectively, indicating that THPB and OapPOSS exhibited good flame retardant effect on epoxy resins (EP). Microscale combustion calorimetry (MCC) results indicated that the peak heat release rate (PHRR) and total heat release (THR) of the cured systems were reduced by 69% and 46%, respectively, compared to those of pure EP. Moreover, the thermal degradation process and flame retardant mechanism of the composites were investigated by TGA, real time FTIR and TG-FTIR. The chemical components of the char residues were explored by XPS. {\textcopyright} 2012 Elsevier B.V. All rights reserved.",

keywords = "Epoxy resin, Flame retardant mechanism, Flammability, Synergism",

author = "Hongyu Yang and Xin Wang and Bin Yu and Lei Song and Yuan Hu and Yuen, {Richard K.K.}",

year = "2012",

month = may,

day = "10",

doi = "10.1016/j.tca.2012.02.021",

language = "English",

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journal = "Thermochimica Acta",

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TY - JOUR

T1 - Effect of borates on thermal degradation and flame retardancy of epoxy resins using polyhedral oligomeric silsesquioxane as a curing agent

AU - Yang, Hongyu

AU - Wang, Xin

AU - Yu, Bin

AU - Song, Lei

AU - Hu, Yuan

AU - Yuen, Richard K.K.

PY - 2012/5/10

Y1 - 2012/5/10

N2 - A series of flame-retardant epoxy resins containing boron and silicon were obtained through a crosslinking reaction, using tris (2-hydroxypropyl) borate (THPB) together with octaaminophenyl POSS (OapPOSS) as the curing agents. The limiting oxygen index (LOI) reached 30.5% when the contents of boron and silicon in the cured system were 1.5% and 0.5%, respectively, indicating that THPB and OapPOSS exhibited good flame retardant effect on epoxy resins (EP). Microscale combustion calorimetry (MCC) results indicated that the peak heat release rate (PHRR) and total heat release (THR) of the cured systems were reduced by 69% and 46%, respectively, compared to those of pure EP. Moreover, the thermal degradation process and flame retardant mechanism of the composites were investigated by TGA, real time FTIR and TG-FTIR. The chemical components of the char residues were explored by XPS. © 2012 Elsevier B.V. All rights reserved.

AB - A series of flame-retardant epoxy resins containing boron and silicon were obtained through a crosslinking reaction, using tris (2-hydroxypropyl) borate (THPB) together with octaaminophenyl POSS (OapPOSS) as the curing agents. The limiting oxygen index (LOI) reached 30.5% when the contents of boron and silicon in the cured system were 1.5% and 0.5%, respectively, indicating that THPB and OapPOSS exhibited good flame retardant effect on epoxy resins (EP). Microscale combustion calorimetry (MCC) results indicated that the peak heat release rate (PHRR) and total heat release (THR) of the cured systems were reduced by 69% and 46%, respectively, compared to those of pure EP. Moreover, the thermal degradation process and flame retardant mechanism of the composites were investigated by TGA, real time FTIR and TG-FTIR. The chemical components of the char residues were explored by XPS. © 2012 Elsevier B.V. All rights reserved.

KW - Epoxy resin

KW - Flame retardant mechanism

KW - Flammability

KW - Synergism

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84862816766&origin=recordpage

U2 - 10.1016/j.tca.2012.02.021

DO - 10.1016/j.tca.2012.02.021

M3 - RGC 21 - Publication in refereed journal

SN - 0040-6031

VL - 535

SP - 71

EP - 78

JO - Thermochimica Acta

JF - Thermochimica Acta

ER -

Effect of borates on thermal degradation and flame retardancy of epoxy resins using polyhedral oligomeric silsesquioxane as a curing agent

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