New polymeric compositions for nonflammable and thermally stable foams

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dc.contributor.advisorArmeniades, C. D.
dc.creatorBravo, Fabio
dc.date.accessioned2009-06-04T00:32:45Z
dc.date.available2009-06-04T00:32:45Z
dc.date.issued1992
dc.description.abstractThere is a great need to develop new polymer foam systems that combine the advantages of polyurethane foams (low cost, ease of processing, desirable physical properties) with nonflammability and thermal stability which polyurethanes lack. In this project we address this need by synthesizing novel polymer networks with a substantial content of nonflammable elements. Specifically most of the pendant hydrogens have been eliminated (or replaced with fluorine), and a substantial fraction of the carbon atoms are replaced with oxygen, phosphorus, and nitrogen. Other elements such as Ca, Mg, Al, Sb, V, and B are also incorporated in the polymer network to enhance nonflammability. The selected phosphorus compounds are in their highest oxidation state (+5) and the nitrogen is present in the form of five or six-member heterocyclic rings. Following these guidelines, several rigid, semi-rigid, and flexible, foamed-in-place foams with outstanding nonflammability and thermal stability have been developed.
dc.format.extent149 p.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.callnoTHESIS CH.E. 1993 BRAVO
dc.identifier.citationBravo, Fabio. "New polymeric compositions for nonflammable and thermally stable foams." (1992) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/13697">https://hdl.handle.net/1911/13697</a>.
dc.identifier.urihttps://hdl.handle.net/1911/13697
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectPlastics technology
dc.subjectChemical engineering
dc.titleNew polymeric compositions for nonflammable and thermally stable foams
dc.typeThesis
dc.type.materialText
thesis.degree.departmentChemical Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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