Synergistic Flame Retardant Effects of Expandable Graphite and Ammonium Polyphosphate in Water-Blow Polyurethane Foam
Joint Authors
Yao, Weiguo
Zhang, Dongyang
Zhang, Yixin
Fu, Tao
Guan, Dongbo
Dou, Yanli
Source
Advances in Materials Science and Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-02
Country of Publication
Egypt
No. of Pages
8
Abstract EN
In this research, expandable graphite (EG) and ammonium polyphosphate (APP) were incorporated into water-blow semirigid polyurethane foam (SPUF) as flame retardants.
The synergistic flame retardant effects of EG with APP in SPUF had been studied by thermogravimetric analysis (TGA), limiting oxygen index (LOI), horizontal burning test, polarizing microscope, and scanning electron microscopy (SEM).
The results indicated that APP and EG used together in SPUF could effectively improve the flame retardancy of SPUF.
When the EG to APP ratio reached 2 : 1 under the total content of flame retardants was kept constant as 20%, the LOI value was increased by about 51% compared to pure SPUF, 2.9% to SPUF/EG and 16.3% to SPUF/APP.
Besides, the residual char was increased up to 27.7% displayed by TG test results.
SEM shows that burned residues of EG/APP/SPUF present more compact char and worm-like structure.
Furthermore, EG shows negative effect on the mechanical property of SPUF with 21.7% decrease in compression modulus, but the mechanical property can be improved by the addition of appropriate content of APP.
American Psychological Association (APA)
Yao, Weiguo& Zhang, Dongyang& Zhang, Yixin& Fu, Tao& Guan, Dongbo& Dou, Yanli. 2019. Synergistic Flame Retardant Effects of Expandable Graphite and Ammonium Polyphosphate in Water-Blow Polyurethane Foam. Advances in Materials Science and Engineering،Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1120579
Modern Language Association (MLA)
Yao, Weiguo…[et al.]. Synergistic Flame Retardant Effects of Expandable Graphite and Ammonium Polyphosphate in Water-Blow Polyurethane Foam. Advances in Materials Science and Engineering No. 2019 (2019), pp.1-8.
https://search.emarefa.net/detail/BIM-1120579
American Medical Association (AMA)
Yao, Weiguo& Zhang, Dongyang& Zhang, Yixin& Fu, Tao& Guan, Dongbo& Dou, Yanli. Synergistic Flame Retardant Effects of Expandable Graphite and Ammonium Polyphosphate in Water-Blow Polyurethane Foam. Advances in Materials Science and Engineering. 2019. Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1120579
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1120579