Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Synthesis and characterization of waterborne and phosphorus containing flame-retardant polyurethane coatings
Download
119411.pdf
Date
2002
Author
Çelebi, Funda
Metadata
Show full item record
Item Usage Stats
237
views
0
downloads
Cite This
In this study, phosphorus containing flame retardant water-dispersed polyurethane paints were produced by incorporating different amounts of phosphorus compound onto the polyurethane main chain. The novel flame retardant compound was synthesized in three steps. In the first step, monobenzalpentaerythritol was produced from benzaldehyde and pentaerythritol. In the second step, phosphorylation of monobenzal pentaerythritol was performed. Final step includes the formation of phosphorus phenyl dihydroxyl from the hydrolyzation of the resulting product in acetic acid solution. IllWater-dispersed polyurethane paint was produced using polyester polyol, isophorone diisocyanate and dimethylol propionic acid (DMPA) as a hydrophilic monomer. To improve the physical and thermal properties of the waterborne polyurethanes, 5% (w/w) polyisocyanate and melamine were used as crosslinking agents. By changing the feed ratio of polyester and phosphorus compound, the flame retardant water-dispersed polyurethane paints with different phosphorus contents were obtained. All the synthesized products were characterized by H-NMR, P-NMR and IR spectroscopies, and the thermal stabilities of the polymers were evaluated by their DSC and TGA thermograms. The effects of increasing phosphorus content on the physical and thermal properties of polyurethane paints were also examined. The addition of phosphorus phenyl dihydroxyl to the main chain increased the hardness but slightly decreased the gloss values of the polyurethane paints. All the samples showed superior impact resistance, and flexibility. Increasing phosphorus content increased the char yield and the maximum fire retardancy was reached at 1.5%P content with the limiting oxygen index value of 29. Further addition of phosphorus decreased the flame resistance of polyurethane paints.
Subject Keywords
Paint
,
Water-dispersed
,
Polyurethane
,
Flame retardant
,
Phosphorus phenyl dihydroxy
URI
https://hdl.handle.net/11511/12372
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Synthesis and characterization of waterborne and phosphorus-containing flame retardant polyurethane coatings
Celebi, F; Aras, L; Gündüz, Güngör; Akhmedov, IM (Springer Science and Business Media LLC, 2003-09-01)
Phosphorus-containing flame retardant water-dispersed polyurethane coatings were produced by incorporating different amounts of a phosphorus compound onto the polyurethane main chain. The novel phosphorus containing compound (phosphorus phenyl dihydroxy) was synthesized in three steps using benzaldehyde, pentaerythritol, phenyl phosphonic dichloride, and acetic acid.
Synthesis and characterization of hyperbranched and air drying fatty acid based resins
Bat, Erhan; Gündüz, Güngör; Department of Chemical Engineering (2005)
There has been a considerable effort in the last years to decrease the amount of volatile organic compounds (VOCs) present in organic coatings. The risks to human health and environmental hazards associated with VOCs, governmental directives, and economic factors are the main driving forces behind this effort. One way of achieving less or no VOC containing coating systems is to produce low viscosity resins. Hyperbranched resins owing to their globular structure have low viscosities and are promising materia...
Synthesis and characterization of multi-hollow opaque polymer pigments
Asmaoglu, Serdar; Gündüz, Güngör; MAVİŞ, BORA; Colak, Uner (Wiley, 2016-08-05)
A new generation multihollow opaque polymer pigment was synthesized by suspension polymerization of water-in-oil-in-water emulsion method, where methyl methacrylate and ethylene glycol dimethacrylate monomer mixture was used as oil phase. The effects of surfactant and cosurfactant composition in terms of hydrophilic/lipophilic balance on the stability of the water-in-oil emulsion and the size of water droplets were studied. Low droplet sizes and the optimum stability were obtained with Span 80&Tween 80 surf...
Development of antibacterial powder coatings using single and binary ion-exchanged zeolite A prepared from local kaolin
İşler Binay, Melda; KİRDECİLER, SALİH KAAN; Akata Kurç, Burcu (2019-12-01)
Antibacterial electrostatic powder paint coating with intended esthetic criteria was specially formulated for industrial applications using single (Ag+) and binary exchanged (Ag+ and Zn2+) zeolite A, which was prepared from local kaolin resources. Optimization studies on reaction parameters were conducted to obtain the most crystalline zeolite A from kaolin. The Ag+ and Zn2+ exchanged zeolite A samples prepared from kaolin were introduced as filler into the paint matrix during the electrostatic powder coati...
Characterization and Electrical Conductivity of Poly(ethylene glycol)/Polyacrylonitrile/Multiwalled Carbon Nanotube Composites
Aqeel, Salem M.; Kucukyavuz, Zuhal (Wiley, 2011-01-05)
Polymer blends based on poly(ethylene glycol), polyacrylonitrile, and multiwalled carbon nanotubes (MWNTs) were prepared by the solvent cast technique from the dispersion of the MWNTs in the concentration range 0-3.45 wt %. The interaction of the MWNTs with the polymer blend was confirmed by a Fourier transform infrared (FTIR) spectroscopy study. The thermal properties of the polymer blend with the MWNTs were carried out by means of differential scanning calorimetry (DSC). It was evident from DSC that the p...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
F. Çelebi, “Synthesis and characterization of waterborne and phosphorus containing flame-retardant polyurethane coatings,” Middle East Technical University, 2002.