Zobrazeno 1 - 10
of 170
pro vyhledávání: '"Gordon L. Nelson"'
Publikováno v:
Polymers for Advanced Technologies. 19:602-608
Polymer nanocomposites (PNC) were prepared by a single-screw extrusion approach. Three polymers were investigated. They are polymethyl methacrylate (PMMA), polystyrene (PS), and polycarbonate (PC). The nanofillers employed in this research were fumed
Autor:
Gordon L. Nelson, Trent M. Smith
Publikováno v:
Polymers for Advanced Technologies. 17:746-753
Polyurethane (PU) and polyimide (PI) copolymers containing a ferrocene oligomer (FcOlig) in the backbone were synthesized and characterized. PU materials with the FcOlig in the chain (PU-FcOlig) demonstrated improved electrostatic dissipation propert
Autor:
Gordon L. Nelson, Feng Yang
Publikováno v:
Polymers for Advanced Technologies. 17:320-326
Three polymer/silica nanocomposites were prepared by a single-screw extrusion approach: poly(methyl methacrylate), polystyrene and polycarbonate/silica nanocomposites. The resulting nanocomposites were subjected to comprehensive studies of mechanical
Publikováno v:
Journal of Fire Sciences. 23:209-226
A comprehensive discussion on the flammability of organic-inorganic nano-composites is presented based on different fire testing methods. Based on various flammability tests, reduced peak heat release rate, an increased oxygen index, and an enhanced
Autor:
Daniel B. Holland, Erik S. Weiser, Martha K. Williams, Orlando Melendez, Gordon L. Nelson, James R. Brenner
Publikováno v:
Polymer Degradation and Stability. 88:20-27
In this research, three different, closely related, polyimide foams (namely TEEK-H, TEEK-L, and TEEK-C) were comparatively studied including thermal, mechanical, surface, flammability, and degradation properties. TEEK-H series was the name given to O
Autor:
James R. Brenner, Erik S. Weiser, James E. Fesmire, Brian W. Grimsley, Trent M. Smith, Martha K. Williams, Gordon L. Nelson
Publikováno v:
Polymers for Advanced Technologies. 16:167-174
Activity at the NASA Langley Research Center (LaRC) has focused on developing low density polyimide foam and foam structures which are made using monomeric solutions or salt solutions formed from the reaction of a dianhydride and diamine dissolved in
Autor:
Erik S. Weiser, Orlando Melendez, Daniel B. Holland, Jaime Palou, Trent M. Smith, Martha K. Williams, Gordon L. Nelson
Publikováno v:
Journal of Adhesion Science and Technology. 18:561-573
The weathering degradation of three closely related polyimide foams was studied by X-ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared (FT-IR) spectroscopy, Raman spectroscopy, Thermogravimetric Analysis (TGA) and Thermomechanical Anal
Autor:
Feng Yang, Gordon L. Nelson
Publikováno v:
Journal of Applied Polymer Science. 91:3844-3850
Polymethylmethacrylate (PMMA)/silica nanocomposites are prepared by solution polymerization in this project and the resulting materials are subjected to characterization to evaluate thermal, mechanical, and fire properties. IR results show that both
Publikováno v:
Polymer. 42:7221-7224
Publikováno v:
Journal of Fire Sciences. 18:430-455
Polyurethane flexible foam materials have a wide range of industrial applications. These applications include flexible foams for packaging, polyurethane-based foam materials for seat cushions in buses, railways, the airline industry, prisons, and dom