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Published: 12/10/2008
Authors: Aaron M Forster, Cyril Clerici, Donald Lee Hunston
Abstract: An efficient method to increase the Mode I fracture energy of a polymer adhesive is to incorporate a rubbery phase within the glassy matrix. In general, the failure surface of a toughened polymer is characterized by cavitated rubber particles and pl ...

22. Instrumented Indentation for Quantifying Quasi-static and Transient Properties of Polymeric Coatings
Published: 11/26/2008
Authors: Aaron M Forster, Peter Krommenhoek, Li Piin Sung, Chris A Michaels, Kurt Wood
Abstract: Instrumented indentation was used to investigate the mechanical properties of coatings for automotive and architectural applications. First, the mechanical properties in the cross-section of a multi-layer acrylic-melamine automotive coating subjected ...

23. Modulus and Chemical Mapping of Multi-layer Coatings
Published: 10/1/2008
Authors: Aaron M Forster, Chris A Michaels, Li Piin Sung, Justin Lucas
Abstract: Thermoplastic olefins (TPO) are polymeric materials utilized for interior and exterior automotive parts. These materials are often painted to enhance appearance and protect the soft TPO substrate. TPO materials posses a low surface energy due to th ...

24. Effect of Annealing Condition and Composition on the Scratch Behavior of Fluorinated Coatings
Published: 9/24/2008
Authors: Li Piin Sung, Aaron M Forster, K Wood
Abstract: Fluorinated and acrylic coatings are commonly used as binders for exterior coatings because of their excellent resistance to UV radiation and many corrosive chemical agents. It is known that the fluorinated component of the coating usually has a lowe ...

25. Elastic Modulus Characterization of Nanocomposite Latex Coatings
Published: 9/24/2008
Authors: Aaron M Forster, Stephanie S Watson, Jonathan White
Abstract: The elastic modulus of a polystyrene-butyl acrylate latex coating was measured using three different techniques: instrumented indentation, dynamic mechanical analysis, and tensile testing. The coating was formulated with 25 nm and 250 nm diameter Ti ...

26. Thermo-viscoelastic Analysis and Creep Testing of Ambient Cure Epoxy Adhesives Used in Construction Applications
Published: 7/30/2008
Authors: Joannie W Chin, Donald Lee Hunston, Aaron M Forster, Justin M Ocel, Jean Michel Hartmann, Paul Fuchs
Abstract: Epoxies are increasingly used in construction for structural applications and properties such as creep are very important. For this reason, the thermo-viscoelastic properties and creep response of two commercial, ambient cure structural epoxy adhesi ...

27. Interfacial Characterization of Multiple Layer Coatings on Thermoplastic Olefins (TPO)
Published: 5/30/2008
Authors: Aaron M Forster, Chris A Michaels, Justin Lucas, Li Piin Sung
Abstract: Thermoplastic olefins (TPO) have made significant inroads as polymeric materials for interior and exterior automotive parts. Spray applied chlorinated polyolefins (CPO) are often used to improve paint adhesion to the low surface energy TPO substrate ...

28. Mechanical Properties of Nanocomposite Latex Films via Instrumented Indentation
Published: 9/6/2006
Authors: Aaron M Forster, Stephanie S Watson, Laura Johnson, Li Piin Sung
Abstract: Inorganic particles, introduced into networked or glassy polymer films, have been used to increase the stiffness of films as a function of pigment loading. Latex films often contain inorganic pigments to increase the opaqueness of the film and to ac ...

29. The Development of a High-Throughput Axisymmetric Adhesion Test
Published: 2/13/2005
Authors: Aaron M Forster, Wenhua Zhang, Christopher M Stafford
Abstract: There has been a growing effort to extend combinatorial and high throughput (C&HT) methods into many aspects of material science, including material property screening and materials discovery. In material science, a prevalent approach to combinatoria ...

30. A Multilens Measurement Platform for High-Throughput Adhesion Measurements
Published: 12/1/2004
Authors: Aaron M Forster, Weiping Zhang, Christopher M Stafford
Abstract: There are few methods available for performing high-throughput adhesion measurements. Current high-throughput methodologies for measuring interfacial adhesion rely on serial or sequential testing of discrete or continuous libraries. Alternatively, ...

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