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You searched on: Author: li piin sung

Displaying records 21 to 30 of 73 records.
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21. Effects of filler type and content on mechanical properties of photopolymerizable composites determined using a two-dimensional gradient platform
Published: 2/5/2009
Authors: Sheng Lin-Gibson, Li Piin Sung, Haiqing Hu, Aaron M Forster, Nancy J Lin
Abstract: Photopolymerizable dental composites have complex processing conditions and multi-component formulations that affect the final properties. Combinatorial screening is a useful approach for evaluating multiple properties of the composites. A single te ...

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. Comparing Analytical Methods for Detecting and Characterizing Nanoparticles in Formulated Products
Published: 10/1/2008
Authors: Katherine M. Tyner, Anna M. Wokovich, William H. Doub, Lucinda F. Buhse, Li Piin Sung, Stephanie S Watson, Nakissa Sadrieh
Abstract: To understand the extent of consumer exposure to nanomaterials as well as how nanomaterials impact consumer goods, it is necessary to detect and characterize nanomaterials in unmodified final products. Although there are pathways to characterize nano ...

24. 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 ...

25. 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 ...

26. Effect of Composition and Processing Condition on Microstructural Properties and Durability of Fluoropolymer/Acrylic Blends
Published: 9/24/2008
Authors: Li Piin Sung, Xiaohong Gu, Derek L. Ho, Forrest Andrew Landis, D Nguyen
Abstract: Fluoropolymer-based coatings have been greatly used as binders for exterior coatings because of their excellent resistance to UV radiation as well as to many corrosive chemical agents. It is also known that the fluorinated component usually has a low ...

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. Chemical and Physical Characterization of Poly(p-phenylene-2,6-benzobisoxazole) Fibers Used in Body Armor: Temperature and Humidity Aging
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7373
Published: 11/1/2006
Authors: Joannie W Chin, E Byrd, Cyril Clerici, Amanda Lattam Forster, M Oudina, Li Piin Sung, Kirk D Rice
Abstract: In recent years, poly(p-phenylene-2,6-benzobisoxazole) (PBO) fibers have become prominent in high strength applications such as body armor, ropes and cables, and recreational equipment. The objectives of this study were to expose woven PBO body arm ...

29. 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 ...

30. Load-Displacement Relations for Nanoindentation of Viscoelastic Materials
Published: 8/2/2006
Authors: Chien-Kuo Liu, S H Lee, Li Piin Sung, Tinh Nguyen
Abstract: A model based on the Burgers viscoelastic concept has been developed to describe the nanoindentation behaviors of polymeric materials. An analytical solution of displacement at the indenter tip has been derived based on the analog of the governing eq ...

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