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Showing 1 to 15 of 15 for “"flame resistance"”.
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High Performance Materials Containing Nitrile Groups
… toughness of phenolic networks while maintaining flame resistance. A four step synthetic scheme has been developed to prepare 4,4′-Bis(3,4-dicyanophenoxy)biphenyl(biphenoxyphthalonitrile). A 700 g mol-1 novolac oligomer was cured with relatively low concentrations of this reagent (~20 wt %) into …
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Synthesis and characterization of novel bismaleimides derived from arylene phosphine oxides and ether-ketones
… Qualitatively the networks show excellent flame resistance compared to commercial controls. In contrast, the ether ketone bismaleimides showed higher melting behaviors and also had glass transition temperatures around 400°C.
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Experimental Evaluation of JP-8-Based Fire Resistant Fuels
… of the supplied Yanmar 2V750 engine. Fuel fire resistance characteristics were defined and compared using a rotating disk anti-misting characterization system. Fuels were characterized based upon spray characteristics including velocity and droplet diameter as well as through ignition testing. …
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Synthesis and Characterization of Phosphine Oxide Containing Monomers and of the Flame Resistant Polymers Prepared Therefrom
… specimens. This correlated with their superior flame resistance. The brittle epoxy matrices were subsequently modified with reactive or non-reactive thermoplastic polymers in order to improve their fracture toughness. Poly(ether imides) and poly(ether sulfones) showed good phase separation …
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Consumer opinions regarding a flammability standard for upholstered furniture
… textile products. Generally, most felt that the flame resistant quality in texti1e products was important. Responsbi1ity for protecting consumers from flammable upholstered furniture was placed on fabric manufacturers, furniture manufacturers or the government. The sample also generally responded …
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Fluorine-Containing Poly(aryl ethers)
… solubility, thermal stability, oxidative resistance and flame resistance while decreasing dielectric constant, water absorption and color. Another moiety often incorporated into polymers to improve thermal stability is the ether linkage. The purpose of this research was to determine the …
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Complexation of metal salts with phosphorus-containing poly(arylene ether)s
… stability, improved solubility, and increased flame resistance. It has been demonstrated that a variety of metal salts including metals such as iron, zinc, cobalt, and copper, can be complexed at a molecular level with the phosphoryl group in films of these polymers producing novel transparent …
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Structure-Property Relationships of Polyester Regioisomers and Pendant Functionalized Polyetherimides
… steeper shear thinning as well as improved flame resistance, limited in thin film commercial PEIs.
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Synthetic Design of Multiphase Systems for Advanced Polymeric Materials
… repeat units. Iodination also results in greater flame resistance than bromination for PEEK-based copolymers, and preserved crystallizability allows for the generation of flame retardant aerogels. Direct halogenation of PEEK in the gel-state also provided a reactive microstructural template for …
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Structure-property behavior of novel high performance thermoplastic and thermoset structural adhesives and composite matrix resins
… thermally stable via dynamic TGA up to 500°C. Flame resistance was suggested by the 10-20 % of char yield observed in air at 750°C. Good tensile modulus (500-550 ksi) via stress-strain measurements and excellent adhesion to Ti-6AI-4V substrates through single lap shear tests was demonstrated. …
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Synthesis and Characterization of Aryl Phosphine Oxide Containing Thermoplastic Polyimides and Thermosetting Polyimides with Controlled Reactivity
… diamine, in order to study their influence on flame resistance and other properties. DAMPO or DAPPO were quantitatively incorporated in concentrations of 25, 50, 75 and 100 mole percent, using the "one pot" ester-acid method. The number average molecular weights of the prepared materials were …
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Synthesis and characterization of high performance polymeric materials: poly(arylene ethers), polyamides, polyesters and liquid crystalline polyarylates
… suggested that these polymers were potentially flame-resistant materials. The AB type halogenophenols were also polymerized in the presence of diphenylsulfone as a diluent and potassium carbonate as a base at elevated temperatures. Poly(ε-caprolactam) (Nylon 6) copolymers were prepared by the …
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Characterisation of Halogen Free Fire Retardant Polypropylene Composites Reinforced by Short Natural Fibres
… drawback of currently available filler type flame retardants is that, they require considerably large amount of filler (by weight) to achieve the standard flammability ratings and thereby promote adverse effects on the mechanical properties of the composites. Use of intumescent ammonium …
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Innovative composite enamel coatings with improved abrasion resistance and mechanical properties
… properties, including durability, thermal resistance, and chemical resistance. Nowadays, vitreous enamels, which are silica- based inorganic coatings deposited by high temperature (580-890 °C) vitrification, are usually employed for the protection of metallic components that must show …