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Showing 1 to 20 of 25 for “"fluoropolymer"”.
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Thermal transport in ultrathin fluoropolymer films
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2009-12-11T16:24:11Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Ghossoub_Marc.pdf: 1311419 bytes, checksum: 2e0bd760a803e28dfafc8547436a3564 (MD5)
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Ion Beam Mixing of Metal/Fluoropolymer Interfaces
The adhesion of metals to polymers depends on the structure at the interface. In this work, we study the "mixing' effect of 50 keV nitrogen implanted thin metal layers on Teflon PTFE (polytetrafluoroethylene). RBS analysis shows that thin layers copper and chromium approximately 300-400 Å thick …
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Mitigating fouling of heat exchangers with fluoropolymer coatings
… option. In this work, the fouling behaviour of fluoropolymer, polypropylene and stainless steel heat transfer surfaces in processing raw milk and whey protein solution are studied. Methodologies to assess the economics of antifouling coatings are developed and applied. Two experimental …
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Characterization of Fluoropolymer Powders Made By Supercritical Assisted Mixing With Crystalline Additives
… steel balls transfer mechanical energy to the fluoropolymer and additive thereby converting them to powders. C02 is added into the chamber to expand the polymer and make it amenable to impregnation by the additive. At the end of the mixing process, a free flowing powder is produced consisting …
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Initiated chemical vapor deposition of fluoropolymer coatings for the surface modification of complex geometries
Initiated chemical vapor deposition (iCVD) is a one-step, soventless process that can be used to produce polymeric thin films. The iCVD technique has been used to polymerize a wide variety of vinyl monomers such as glycidyl methacrylate (adhesive) and 2-hydroxyethyl methacrylate (hydrophilic). The …
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Analysis of the optical coupling of wavelength-shifting fibers to organic liquid scintillator filled fluoropolymer tubes for industrial and nuclear security applications
… consists of a 5 mm diameter by 2-meter long fluoropolymer tube filled with organic liquid scintillator (OLS), optically read-out using wavelength shifting (WLS) fibers. The 1:400 ratio of diameter to length makes light collection from the organic scintillator very challenging. Over ten …
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Surface characterization and adhesive bonding of carbon fiber-reinforced composites
… composites bonded with an epoxy film adhesive. Fluoropolymer residues which were found on the composite surfaces were fully removed by grit blasting and oxygen plasma treatments, but not by an MEK wipe. The use of a peel ply prevented fabrication contamination from depositing on the bonding …
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Caracterização do resíduo pós-industrial de PVDF visando potencial utilização via reciclagem primária
… As a recycling process for this fluoropolymer is still unknown, this work suggests reinserting the PVDF post-industrial waste by primary recycling aiming the remediation of the issue caused by its disposal in the environment. Results showed that both PVDF post-industrial and …
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SYNTHESIS OF PERFLUOROHETEROAROMATIC POLYMERS FOR ION-CONDUCTING MEMBRANE FUEL CELLS VIA FREE RADICAL-BASED REACTIONS AND SYNTHESIS OF DI-CATIONIC IONIC LIQUIDS AS EFFICIENT SO2 ABSORBENTS
… The second part of this thesis deals with fluoropolymer-based anion-exchange membranes. A new class of coordinated metal/perfluoropolymer type composite membranes were synthesized and characterized for anion-exchange membrane fuel cells (AEMFCs). A membrane comprised of …
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Development and analysis of aluminum-PTFE reactive composite material
… for its efficient use as a fuel. In this study a fluoropolymer; Teflon's inclusion in micron sized -325 mesh aluminum is suggested as a replacement to aluminum. Aluminum Teflon based energetic material see great potential for use in pyrotechnics, propellants and even explosives. A composite with …
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Polymers for KrF 248 nm Nanosecond Laser Micromachining
… polymer which display typical fluoropolymer thermal and chemical properties.
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Investigations into Building Block Structure and Method of Preparation on the Properties of Nanomaterials
… time. Micelles from a novel hyperbranched fluoropolymer with small sizes able to pass the blood brain barrier were synthesized: Chapter 3). After conjugation with F3 peptide which targets to nucleolin in most tumor cells, and loaded with doxorubicin as the drug to kill the tumor cells, both …
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Advanced materials for enhanced condensation heat transfer
… subclasses of materials: rare-earth ceramics and fluoropolymer films deposited via initiated chemical vapor deposition (iCVD). We show how both materials exhibit robust dropwise behavior, and further subject an iCVD film to an accelerated endurance trial to show how it sustains dropwise …
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Initiation and Growth of Reaction in LLM-105
… shock loading. LLM-105 was formulated with a fluoropolymer binder and detonated under a one dimensional shock regime with in-material gauge analysis. Data was acquired for two new LLM-105 formulations with respect to detonation velocity and growth of reaction within the explosive. The results …
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Nanocompósito de poliamida/óxido de grafeno reduzido: um eficiente nanomaterial aplicado no tratamento de água produzida (ap) e separação de óleo/água do mar
… out in two stages, where, in the first, a fluoropolymer/RGO/PA nanocomposite was developed using an HP/HT process followed by spray coating and thermosetting/infrared polymerization and then applied to remove engine oil in seawater. In the second stage, a nanocomposite based on polyamide …
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The development of a transparent soil and its application in imaging root trajectories and root bacteria interactions
… treated particles of the low refractive index fluoropolymer Nafion, water, plant nutrients and air and has water retention and ion exchange properties similar to natural soils. Before imaging, the transparent soil was saturated with a refractive index matched liquid for appropriate …
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Novel Applications Of Fluoropolymers In Solution-Processed Electronics
… in stacked OLED devices. On the other hand, fluoropolymers are used to enable patterning of organic materials with otherwise incompatible commercial (organic) photoresists, via roll-to-roll compatible inkjet printing and, finally, for high resolution studies with electron beam lithography.
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Thermoplastic-based pyrotechnic compositions
… such as potassium nitrate. More interesting are fluoropolymer matrices as these strong oxidants enable the design of non-gassing systems with suitable fuels. The presence of fillers dramatically increases the melt viscosity. The random packed limit for monodisperse spherical particles corresponds …
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