Results 121 to 130 of about 134,814 (297)

Development of thermally stable phosphonitrile elastomers for advanced aerospace structures [PDF]

Both high and low molecular weight, curable poly(fluoroalkoxy phosphazene) terpolymers were prepared. These terpolymers resulted from reaction of (Cl2PNn) polymer with alkoxides derived from CF3CH2OH and C3F7CH2OH, and an alkoxide derived from CH3CH(OH ...
Gerber, A. H., Peterson, T., Reynard, K. A., Rose, S. H.   +3 more
core   +1 more source

A Novel Air‐Liquid Interface Exposure System for Continuous Gas Exposure of Airway Epithelial Cells: Exposure of NO2 With Viral Co‐Challenge

Journal of Applied Toxicology, EarlyView.
ABSTRACT Most in vitro toxicological research investigating the effects of inhaled compounds employ short‐term exposures of a couple of hours, or repeated, intermittent exposures for a limited number of days with exposure free periods, whereas in reality, we are continuously exposed, albeit to variable concentrations.
Marcia M. Oldenburger, Evert Duistermaat, Pieter S. Hiemstra, Flemming R. Cassee, Yvonne C. M. Staal   +4 more
wiley   +1 more source

Vegetable oils: a source of polyols for polyurethane materials

Oilseeds and fats, crops and lipids, 2016
This manuscript is dedicated to the literature on vegetable oil-based polyurethanes via the isocyanate/alcohol route. A lot of efforts have been made to replace petroleum-based resources.
Maisonneuve Lise, Chollet Guillaume, Grau Etienne, Cramail Henri   +3 more
doaj   +1 more source

Flexible composite film for printed circuit board [PDF]

A flexible printed circuit for a printed circuit board in which layers of reaction product composed of a combination of phenoxy resin - polyisocyanate - brominated epoxy resin, and in which the equivalent ratio of those functional groups is hydroxyl ...
Asakura, M., Soda, A., Tanaka, H., Yabe, K.   +3 more
core   +1 more source

Catalyst‐Free Mass Polymerization and Characterization of Bio‐Polyhydroxhyurethanes Based on Resorcinol Bis(Cyclocarbonate)

Macromolecular Materials and Engineering, EarlyView.
Non‐isocyanate polyhydroxyurethanes (PHUs) were synthesized from resorcinol bis(cyclocarbonate) and eco‐friendly diamines under mild, catalyst‐free conditions. The resulting polymers were extensively characterized for their structural, thermal, and mechanical properties, as well as processability and adhesion performance.
Federico Olivieri, Noemi Faggio, Giovanni Dal Poggetto, Chiara Santillo, Roberto Avolio, Rachele Castaldo, Mariacristina Cocca, Maria Emanuela Errico, Marino Lavorgna, Gennaro Gentile   +9 more
wiley   +1 more source

Exploring the Impact of the Synthesis Variables Involved in the Polyurethane Aerogels-like Materials Design

Gels
This research presents a novel approach to synthesising polyurethane (PUR)-based aerogels at the pilot scale, optimizing synthesis variables such as the gelation solvent, solids content, chain extender/isocyanate ratio, and dispersion mode.
Esther Pinilla-Peñalver, Darío Cantero, Amaya Romero, Luz Sánchez-Silva   +3 more
doaj   +1 more source

Study of highly fluorinated heterocyclic polymers for cryogenic bladder applications Final report, 15 Oct. 1968 - 15 Mar. 1970 [PDF]

Highly fluorinated heterocyclic polymers for cryogenic bladder ...
Fitzgerald, W. P., Jr., Sanders, B. Y.
core   +1 more source

Interfacial Energy and Composition Controlled Self‐Stratification in Polyurethane Coatings

Macromolecular Materials and Engineering, EarlyView.
This study elucidates self‐stratification in polyurethane coatings driven by interfacial energies and composition‐dependent phase separation. Using XPS, SIMS, and Raman analyses, we reveal rapid formation of hydrophobic and hydrophilic layers and substrate‐dependent interfacial structures.
Gaurav Singhal, Lihong Lao, Michaeleen L. Pacholski, Harshad Shah, Junsi Gu, Bryan Caruso, Fabio Aguirre‐Vargas, Piyush Singh, Kshitish A. Patankar, Simon A. Rogers, Charles M. Schroeder, Paul V. Braun   +11 more
wiley   +1 more source

Exploratory study on the effects of novel diamine curing agents and isocyanate precursors on the properties of new epoxy and urethane adhesives [PDF]

The effects of novel aromatic diamine structures on the adhesive properties of epoxy and polyurethane adhesives were studied. Aromatic diamines based on benzophenone and diphenyl-methane isomers were evaluated as curing agents for epoxy resins and ...
Glasgow, D. G.
core   +1 more source

Polyurethanes from fluoroalkyl propyleneglycol polyethers [PDF]

, 1969
A description is given of highly stable polyurethane polymers prepared by reacting a polyether with a diisocyanate. Compounded stocks of these polymers may be shaped and cured in conventional equipment used in the rubber industry.
Trischler, F. D.
core   +1 more source