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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 457 for “"Resins"”.
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NMR investigations of cyanate resins
… systems, which are newly-developed thermo set resins used for electronic circuit boards and many structural composites. The mechanism of the curing reactions of cyanate resins based on bisphenol-A dicyanate has been investigated both in solution and in the solidstate by NMR spectroscopy. To …
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Adhesive properties of silicone resins
… of Phase I rubber toughened rigid silicone resins was performed to determine the possibility of an application such as structural adhesives. Single-lap shear tests were used to study several parameters, such as the thickness of the joint, the overlap length, the behavior at high temperature …
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Toughening of rigid silicone resins
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1997.
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Silicone resins and their composites
… and condensation cure (4-3136) silicone resins have been studied for their mechanical property change with temperature. Properties include maximum flexural stress, flexural modulus and fracture toughness K[sub]IC. Temperature effect on mechanical properties of addition cure resin is …
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Evaluation of Second Generation Indirect Composite Resins
… four commercially available laboratory composite resins for application as long term full coverage restorative materials. Water solubility and sorption levels, staining resistance, gloss, surface roughness, wear due to tooth brush abrasion, two-body and three-body wear, fracture toughness and …
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Synthesis and evaluation of actinide imprinted resins
Organic resins have previously shown good results with application to actinide separations. Large portions of recent research have been dedicated to the synthesis and evaluation of resins with phenolic-type functional groups. Other recent chemical research with lighter metals has developed a …
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Characterization of resins in alternative fuel mixtures
"Resins" is a class of compounds believed to play an important role in the conversion processes of coal and coal-related materials into oils. Methods currently used to isolate this fraction, generally lack reproducibility and yield impure and strongly overlapping fractions which do not reflect the …
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Modified Phenol-Formaldehyde Resins for C-Fiber Reinforced Composites: Chemical Characteristics of Resins, Microstructure and Mechanical Properties of their Composites
… the chemistry of phenol-formaldehyde (PF) resins, its functionalities with their microstructural and mechanical properties in composite materials. The main focus is put on the development of the pores in dependence on the chemical composition of the resins and their influence on the …
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Fabrication of acrylic resins in the school shop
LD2668 .T4 1949 W6
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The Effect of Organic Resins on Ice Recrystallization
… this thesis, the IRI activity of Wang and PEGA resins was evaluated, finding no IRI activity when compared with 2FA, a well-known IRI. As Wang and PEGA resins are commonly coupled with amino acids during solid phase synthesis, the IRI activity of the resins functionalized with different amino …
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High fracture toughness and high modules silicone resins
Rigid silicone resins, generally referred to as polyalkylsilsesquioxanes, are an important class of hybrid thermosetting polymers with both inorganic and organic characteristics. They have superior thermal stability, heat resistance, fire resistance, and still can be easily processed. Silicone …
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Separation and purification of the resins in tallol
The investigation was undertaken to effect a separation of the resin acids from the fatty acids of tallol a waste product of the paper industry. The furfural-water and furfural-petroleum ether methods were investigated. In the first method, a 5% solution of water in furfural by weight was used as a …
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Treatment of Landfill leachates using anion exchange resins
… to evaluate the applicability of anion exchange resins to remove organic matter, UV quenching substance and organic nitrogen from landfill leachates. Leachate samples based on varying age and treatment methods were utilized. The anion exchange resins were found to work effectively for all studied …
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The cure of and moisture ingress into epoxy resins
… can be used to monitor the cure of epoxy resins in the field without specialist training in interpretation of the results. The second aim was to quantify moisture ingress through gravimetric measurements and dielectric spectroscopy. Although in certain systems a close correspondence …
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Comparison of Silica Polyamine Composites and Crosslinked Polystyrene Resins
… for making analogs of existing polystyrene resins on the silica polyamine matrix were explored. These in-depth studies have demonstrated that while crosslinked polystyrene chelator resins sometimes exhibit higher equilibrium batch capacities, SPCs exhibit faster mass transfer kinetics and …
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Comparison of Silica Polyamine Composites and Crosslinked Polystyrene Resins
… for making analogs of existing polystyrene resins on the silica polyamine matrix were explored. These in-depth studies have demonstrated that while crosslinked polystyrene chelator resins sometimes exhibit higher equilibrium batch capacities, SPCs exhibit faster mass transfer kinetics and …
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An Investigation of the destruction of ion exchange resins
Ion exchange resins are used for many purposes in various areas of science and commerce. One example is the use of cation exchange resins in the nuclear industry for the clean up of radioactively contaminated water (for example the removal of 137Cs). However, during removal of radionuclides, the …
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Advancements in polymer resins for solid-phase peptide synthesis
… libraries (on the order of 10⁹) of peptides. The resins large enough to provide sufficient amounts of peptide sample for sequencing would occupy too great a volume in order to create large quantities. Conversely, attempting to fold a protein on resins with very high loading results in folding …
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