Results 111 to 120 of about 110,919 (317)

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

open access: yes
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

open access: yesMacromolecular 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   +11 more
wiley   +1 more source

Modification of polyester fiber by blocked isocyanate impregnating solution and its adhesion to styrene-butadiene rubber

open access: yesHecheng xiangjiao gongye
Polyester fiber was modified by blocked isocyanate impregnation system instead of resorcinol-formaldehyde-latex impregnation system. The effects of the amount of 2,2-dimethylolbutyric acid (DMBA) and the mass ratio of blocked isocyanate to butadiene ...
YANG Xue-qi, LIU Yao-wei, SHEN Mei, LIU Li, LI Lin
doaj   +1 more source

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

open access: yes
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.   +3 more
core   +1 more source

Mechanical Performance Assessment and Streamlined Life‐Cycle Analysis of Random‐Waste Coir‐Fiber Metal Laminates

open access: yesPolymer Composites, EarlyView.
The Promise of Coir Fiber Laminates in Sustainable Structural Engineering. ABSTRACT This study explores sandwich structures based on the waste fiber metal laminate concept, integrating short random‐coir‐fiber composites with aluminium skins. The research investigates the combination of low‐cost aluminum alloy and natural fiber composites, focusing on ...
Júlio C. dos Santos   +6 more
wiley   +1 more source

Vegetable oils: a source of polyols for polyurethane materials

open access: yesOilseeds 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   +3 more
doaj   +1 more source

Mechanochemical Treatment of Cellulose: A Strategy for Developing Functional Biocomposite Materials

open access: yesPolymer Engineering &Science, EarlyView.
Mechanochemistry as an integrated approach for combining fiber defibrillation, activation, surface functionalization, and cellulose‐based composite fabrication in a single or reduced number of steps. ABSTRACT Cellulose‐based biocomposites are attracting increasing scientific and industrial interest due to their sustainable origin, biodegradability, and
Murilo O. da Luz   +3 more
wiley   +1 more source

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

open access: yesGels
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   +3 more
doaj   +1 more source

Polyurethanes from fluoroalkyl propyleneglycol polyethers [PDF]

open access: yes, 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

The Influence of Fluorinated Aromatic Isocyanates on the Cycling Performance of Silicon Anodes in Lithium-Ion Batteries [PDF]

open access: bronze, 2009
Michael Sternad   +11 more
openalex   +1 more source

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