| dc.contributor.author | Meyer, Kimberly Nicol | |
| dc.description.abstract | Rigid polyurethane foams have shown promise in several applications as a means to
reduce weight without compromising structural properties. Information about the
chemical formula of the liquid components, the reaction to produce foaming, and the
curing kinetics of rigid polyurethane foam are discussed. The chemical formulas of the
liquid components are described, and the reaction required to produce foaming and cure of
the polyurethane is stated. The foaming kinetics of the polyurethane were determined based
on experimental work as well as theoretical modeling. It was determined that there was a
relationship between the initial load the frame was placed under and the amount of pressure
measured during the foaming process. The theoretical modeling was conducted for an
equilibrium scheme as well as viscosity and diffusion controlled stages. Each of the
models predicted the bubble growth to be much quicker than was seen in experimental
work, but captured dimensional properties in the foam. The curing kinetics of the liquids
and thermal profile of the foaming reaction were measured and a plan for incorporation
into future modeling is discussed. | en_US |
| dc.publisher | North Dakota State University | en_US |
| dc.rights | NDSU policy 190.6.2 | en_US |
| dc.title | Foaming Kinetics of Closed Cell Rigid Polyurethane Foam | en_US |
| dc.type | Thesis | en_US |
| dc.date.accessioned | 2024-02-16T16:16:53Z | |
| dc.date.available | 2024-02-16T16:16:53Z | |
| dc.date.issued | 2010 | |
| dc.identifier.uri | https://hdl.handle.net/10365/33665 | |
| dc.subject.lcsh | Polyurethanes -- Structure. | en_US |
| dc.subject.lcsh | Foamed materials -- Mechanical properties. | en_US |
| dc.subject.lcsh | Plastic foams -- Mechanical properties. | en_US |
| dc.rights.uri | https://www.ndsu.edu/fileadmin/policy/190.pdf | en_US |
| ndsu.degree | Master of Science (MS) | en_US |
| ndsu.college | Engineering | en_US |
| ndsu.department | Mechanical Engineering | en_US |
| ndsu.program | Mechanical Engineering | en_US |
| ndsu.advisor | Ulven, Chad A. | |
| ndsu.advisor | Akhatov, Iskander | |
