New polymeric compositions for nonflammable and thermally stable foams

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dc.contributor.advisorArmeniades, C. D.en_US
dc.creatorBravo, Fabioen_US
dc.date.accessioned2009-06-04T00:32:45Zen_US
dc.date.available2009-06-04T00:32:45Zen_US
dc.date.issued1992en_US
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.en_US
dc.format.extent149 p.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoTHESIS CH.E. 1993 BRAVOen_US
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>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/13697en_US
dc.language.isoengen_US
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.en_US
dc.subjectPlastics technologyen_US
dc.subjectChemical engineeringen_US
dc.titleNew polymeric compositions for nonflammable and thermally stable foamsen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentChemical Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
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