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You searched for subject:( Ambient cure). Showing records 1 – 2 of 2 total matches.

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University of St Andrews

1. Robertson, Duncan J. Inorganic organic composite polymer coatings based on functionalised polyhedral oligomeric silsesquioxanes.

Degree: PhD, 2011, University of St Andrews

A study has been undertaken with the aim of preparing appropriately functionalised polyhedral oligomeric silsesquioxane (POSS) compounds to be used in ambient-cure chemistry. Numerous epoxy-functionalised compounds have been designed and synthesised and these materials have been characterised in order to determine their chemical structure. These compounds have also been incorporated into existing polymerisation reactions to test whether these materials could be used in the protective coatings industry. A glycidyl-functionalised POSS compound was prepared and reacted with a series of amines to produce ambient-cured polymers which could be used in the coatings industry. There were also a series of experiments undertaken on these polymers to identify the processes at work and to test how they compare to industry standards. As a direct comparator to this work, another set of results was obtained with a cyclic-siloxane material incorporated into the systems in place of the POSS. A linear analogue was also tested. The reactions proved to be a success and an appropriate data-set was yielded. During the synthesis of POSS precursors there are a series of residual materials produced. These materials have also been studied in this project. It was anticipated that these would behave in a similar way to the POSS compounds however the same functionality was never achieved as had been with the POSS. Ambient-cured polymers have also been targeted from a basic hydride-functionalised POSS compound and a polybutadiene system. The appropriate reactions unfortunately never took place as anticipated but there were a series of tests undertaken to identify the processes at work. A study has also been undertaken using near-I.R. to track the curing reactions. From this data, the extent of cure could be studied and the make-up of the reaction could be investigated in more detail.

Subjects/Keywords: 547.7; Silsesquioxane; POSS; Coatings; Ambient-cure; Epoxy; TA418.9C6R7; Polymeric composites; Silicon compounds; Epoxy coatings

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Robertson, D. J. (2011). Inorganic organic composite polymer coatings based on functionalised polyhedral oligomeric silsesquioxanes. (Doctoral Dissertation). University of St Andrews. Retrieved from http://hdl.handle.net/10023/2155

Chicago Manual of Style (16th Edition):

Robertson, Duncan J. “Inorganic organic composite polymer coatings based on functionalised polyhedral oligomeric silsesquioxanes.” 2011. Doctoral Dissertation, University of St Andrews. Accessed July 10, 2020. http://hdl.handle.net/10023/2155.

MLA Handbook (7th Edition):

Robertson, Duncan J. “Inorganic organic composite polymer coatings based on functionalised polyhedral oligomeric silsesquioxanes.” 2011. Web. 10 Jul 2020.

Vancouver:

Robertson DJ. Inorganic organic composite polymer coatings based on functionalised polyhedral oligomeric silsesquioxanes. [Internet] [Doctoral dissertation]. University of St Andrews; 2011. [cited 2020 Jul 10]. Available from: http://hdl.handle.net/10023/2155.

Council of Science Editors:

Robertson DJ. Inorganic organic composite polymer coatings based on functionalised polyhedral oligomeric silsesquioxanes. [Doctoral Dissertation]. University of St Andrews; 2011. Available from: http://hdl.handle.net/10023/2155

2. Caldwell, Mary Kathryn. Characterization of Epoxy-hybrid nano-particle Resins for ambient cure VARTM Processes.

Degree: MS, Mechanical Engineering, 2008, North Carolina State University

This thesis presents the mechanical characterization of fire resistant epoxy-hybrid resin systems suitable for ambient cure VARTM processes. Several new epoxy-hybrid nano-particle resins were developed and tested for use in large scale composite structures. Based on the viscosity, Tg, and cure time requirements twelve of these resins systems were pre-selected for mechanical testing. Neat resin castings were tested in tension to determine the elastic modulus, tensile strength and maximum elongation. From these results, six of the resin systems were further cast in unidirectional glass fiber laminates. Transverse tension and short beam shear testing was performed on all laminates to determine the mechanical properties of the glass/epoxy systems. Two of the epoxy-hybrid resin systems showed promising behaviors, having a higher transverse modulus and ultimate strength than the original benchmark vinyl-ester resin. Additionally, fiber Bragg grating sensors were embedded in one benchmark vinyl-ester laminate and one epoxy-hybrid laminate during the cure cycle. Taking advantage of both the extrinsic and intrinsic properties of these sensors, residual strains, temperature changes, and degree of cure of the resin were monitored. In addition to having a higher modulus of elasticity and ultimate strength, these new epoxy-hybrid nano-particle resin laminates showed minimal temperature increases during cure and smaller residual strains than the comparable vinyl-ester resin laminates. Advisors/Committee Members: Dr. Eric Klang, Committee Member (advisor), Dr. Kara Peters, Committee Chair (advisor), Dr. Jeffrey Eischen, Committee Member (advisor).

Subjects/Keywords: Cure sensing; Ambient cure; Fiber Optic Sensing; VARTM

…temperature (>200 ˚F), an ambient cure temperature (75 to 95°F) and mechanical… …of the vinyl ester resin with ambient cure, and then used this as a benchmark for the… …from the mold it was set aside on a flat surface to continue its cure in an ambient… …58 Table A.3: Tensile data for each sample of Derakane 510a with post cure… …associated with vinyl ester systems is high-cure shrinkage. Another drawback to vinyl ester resins… 

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Caldwell, M. K. (2008). Characterization of Epoxy-hybrid nano-particle Resins for ambient cure VARTM Processes. (Thesis). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/1545

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Caldwell, Mary Kathryn. “Characterization of Epoxy-hybrid nano-particle Resins for ambient cure VARTM Processes.” 2008. Thesis, North Carolina State University. Accessed July 10, 2020. http://www.lib.ncsu.edu/resolver/1840.16/1545.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Caldwell, Mary Kathryn. “Characterization of Epoxy-hybrid nano-particle Resins for ambient cure VARTM Processes.” 2008. Web. 10 Jul 2020.

Vancouver:

Caldwell MK. Characterization of Epoxy-hybrid nano-particle Resins for ambient cure VARTM Processes. [Internet] [Thesis]. North Carolina State University; 2008. [cited 2020 Jul 10]. Available from: http://www.lib.ncsu.edu/resolver/1840.16/1545.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Caldwell MK. Characterization of Epoxy-hybrid nano-particle Resins for ambient cure VARTM Processes. [Thesis]. North Carolina State University; 2008. Available from: http://www.lib.ncsu.edu/resolver/1840.16/1545

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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