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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 682 for “"curing"”.
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Aspects of radiation curing
The electron beam induced polymerisation of dialkyltin diacrylates, as well as the UV and electron beam induced polymerisation of some novel silicon containing acrylates are discussed. The reactivity and film forming properties of these materials are compared with that of some commercial diluents …
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Thermosetting curing systems modeling project
… thesis focuses on modeling work of thermosetting curing systems, specifically for polyurethane system and epoxy/amine system. Chapter 2 is the study on preheating impact on urethane foaming process with assistance of modeling approach. Chapter 3 is the application of further developed model in …
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The Ethnography of Lisu Curing
Made available in DSpace on 2015-05-12T22:37:32Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7212145.PDF: 14327004 bytes, checksum: 696aa5a76b6a2a8dd9d88e56962fd823 (MD5) Previous issue date: 1971
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Microwave curing of cementitious materials
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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Variable Frequency Microwave Curing of Polyurethane
Historically, coatings were processed from natural oils, fats, and resins; the first well-known and widely used being lacquer [Meir-Westhues, 2007]. In the 20th century, synthetic resins were developed to achieve coatings with improved properties. Of these coating compositions, polyurethanes (PURs) …
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Accerlated curing of concrete with microwave energy
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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Impact of Curing Time and Curing Stress On the Mechanical Behavior of Cement-Improved and Cement-Fiber-Improved Soft Soil
… special attention being paid to the effects of curing time and vertical curing stress. It is shown that the introduction of cement into soft soils results in decreased compressibility and increased unconfined compressive strength when compared to unimproved soils. Also, the unconfined …
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Thermal curing of concrete with conductive polymer technology.
… strength development is dependant on two primary curing factors, time and temperature. Increasing the rate of strength development of concrete by elevating the curing temperature at early ages has advantages of maximising concrete production and reducing manufacturing time. Increasing the …
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Polymerization shrinkage stress of light curing dental composites
OBJECTIVES: To analyze the polymerization shrinkage stresses flowable and universal dental composites at different times. MATERIALS AND METHODS: Seven flowable and four universal composites; were used in this study. Two glass cylinders were fixed in a vertical position on the INSTRON machine; …
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Artificial curing of mechanically harvested Virginia-type peanuts
The purpose of this research was to obtain information on the requirements for successfully drying mechanically harvested Virginia peanuts by artificial means. The work was performed at the Tidewater Research Station, Holland, Virginia. It was performed in bulk-type bins which were seven feet deep. …
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Some aspects of free radical polymerisation in UV-curing
… photocalorimetry,bulk polymerisation and the curing of thin films that 1PM acts as a physical quencher for the triplet state of IRG-907 and that it is a very poor hydrogen donor. Sensitisation of IRG-907 by lix was also investigated and it wasconfirmed that lix can sensitise the -cleavage of …
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Effect of Early Curing Conditions on Permeability of Concrete
The potential effects of damage during early curing of Portland cement concrete have been investigated by measuring the coefficient of permeability. Damage can occur due to temperature gradients caused by heat of hydration or drying shrinkage due to premature loss of water.
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Modification, curing and flame retardation of epoxy resin networks
… epoxy resins were investigated. The influence of curing temperature and time on morphological development and fracture behavior was also studied. Arylamine functionalized poly(arylene ether sulfone)s of controlled molecular weight were synthesized as soluble, but reactive thermoplastic modifiers …
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Optimal Curing for Thermoset Matrix Composites: Thermochemical and Consolidation Considerations
A finite element method is then developed to solve two-dimensional consolidation problems. The consolidation governing equations, one for solid stress and one for fluid pressure, are derived using a local volume averaging approach, and they are strongly coupled. A special anisotropic hyperelastic …
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The continuous curing process for thick filament wound composite structures
… matrix composites, called continuous curing, is studied. In this process cure proceeds at the same time as material is supplied, for instance by tape laying or filament winding. The cure is initiated from one side by an external heat source after a small initial thickness has been …
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Responses of flue-cured tobacco to harvesting and curing variables
… (Nicotiana tabacum L.) and eight harvesting and curing methods were simultaneously evaluated. Harvesting variables involved the removal of different leaf numbers on different schedules. Curing methods included single or separate barn conventional curing and a bulk curing method. Certain …
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Towards a more sustainable world: UV-curing & 3D printing of bio-based monomers: Synthesis and characterization of bio-derived monomers for cationic and radical UV-curing
L'abstract è presente nell'allegato / the abstract is in the attachment
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The Development of Sustainable Internal Curing Agents Using Natural Hollow Fibres
… of superabsorbent materials as internal curing agents has demonstrated effectiveness in mitigating self-desiccation and early-age cracking in cement mixes characterized by low water-to-binder ratios (w/b). However, concerns related to sustainability, availability, and cost have emerged, …
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Rheological characteristics of solvent free nanofluids: Thermal transitions and reactive curing
… rheological parameters, thermal transitions, and curing kinetics of various solvent-free nanofluids synthesized by Zhiming Qiu and Kejian Bian at the Coating Research Institute at Eastern Michigan University.</p>
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Time-Temperature Curing Relationship of an Adhesive Binder with Rice Straw
… mechanical testing was used to inspect cubes for curing and to support the results obtained from using a chemical dye. Results from cubes inspected with the chemical dye method were then used to develop an inverse relationship between time and temperature needed to cure the cubes – with the lowest …
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