Multi‐scale damping of graphene foam‐based polyurethane composites synthesized by electrostatic spraying
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چکیده
منابع مشابه
Vibration Damping of Flexible and Rigid Polyurethane Composites
It is desirable to obtain materials that have high vibration damping while maintaining other structural properties. Aerospace quality composite materials typically have greater strength and stiffness to weight ratios than most metals, while providing increased damping. However, their passive damping capacities are not enough for some applications. Fiber reinforced elastomers (FRE) or elastomer ...
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Shape memory behavior of crystalline shape memory polyurethane (SPU) reinforced with graphene, which utilizes melting temperature as a shape recovery temperature, was examined with various external actuating stimuli such as direct heating, resistive heating, and infrared (IR) heating. Compatibility of graphene with crystalline SPU was adjusted by altering the structure of the hard segment of th...
متن کاملMechanical Properties and Wear Resistance of Sulfonated Graphene/Waterborne Polyurethane Composites Prepared by In Situ Method
In order to improve the dispensability of graphene oxide (GO) in waterborne polyurethane (WPU), sulfonated graphene (SGO) with superior dispersity was prepared by modifying graphene oxide with sodium 2-chloroethane sulfonate to introduce hydrophilic sulfonic groups into the structure. SGO/WPU composites were prepared using isophorone diisocyanate (IPDI), polytetramethylene ether glycol (PTMEG 2...
متن کاملAsthma death after spraying polyurethane truck bedliner.
BACKGROUND Isocyanate exposure is the most common cause of work-related asthma. In 2003, a male in his mid-40s died of an acute asthmatic reaction approximately 1 hr after he sprayed the inside of a cargo van with an isocyanate-containing truck bedliner. This is the first reported death attributable to this type of isocyanate application. METHODS The Michigan Fatality Assessment and Control E...
متن کاملComposites prepared from the waterborne polyurethane cationomers-modified graphene. Part II. Electrical properties of the polyurethane films
The research was planned to test electrical properties of polymer films made from polyurethane cationomers with 0-2 wt.% graphene admixture. The cationomers were synthetized in the reaction of 4,4'-methylenebis(phenyl isocyanate), polycaprolactone diol (M = 2000), N-methyldiethanolamine, and formic acid. It was found that addition of approx. 2 wt.% of graphene causes the loss of volume resistiv...
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ژورنال
عنوان ژورنال: Polymer Composites
سال: 2018
ISSN: 0272-8397,1548-0569
DOI: 10.1002/pc.25178