Results 31 to 40 of about 117,724 (349)

Über die Synthese neuer Epoxyverbindungen

open access: yesCHIMIA, 1962
Firstly, the different types of epoxy compounds are considered : • Glycidyl ethers, esters, and amines. • Epoxydation products: a) linear aliphatic epoxides, epoxidised fatty acids and fatty acid derivatives and epoxidised polybutadienes; b ...
Hans Batzer, Erwin Nikles
doaj   +1 more source

Reinforcing styrene butadiene rubber with lignin-novolac epoxy resin networks

open access: yeseXPRESS Polymer Letters, 2015
In this study, lignin-novolac epoxy resin networks were fabricated in the styrene butadiene rubber (SBR) matrix by combination of latex compounding and melt mixing. Firstly, SBR/lignin compounds were co-coagulated by SBR latex and lignin aqueous solution.
P. Yu   +6 more
doaj   +1 more source

Mechanically robust, hydrothermal aging resistant, imine-containing epoxy thermoset for recyclable carbon fiber reinforced composites

open access: yesMaterials & Design, 2022
Imine compounds have been proved to possess great potential in the design and preparation of sustainable epoxy thermosets. However, it is still a great challenge to develop imine-containing hardener with definite structure due to the randomness of ...
Yingying Liu   +6 more
doaj   +1 more source

Optimization of components in development of polymeric coatings for restoration of transport vehicles

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2018
It is proved, that for improving the performance characteristics of vehicle parts, including their corrosion resistance and wear resistance, it is advisable to use protective polymeric composite coatings.
А.V. Buketov   +10 more
doaj   +1 more source

Estimation of the solubility parameters of model plant surfaces and agrochemicals: a valuable tool for understanding plant surface interactions [PDF]

open access: yes, 2012
Background Most aerial plant parts are covered with a hydrophobic lipid-rich cuticle, which is the interface between the plant organs and the surrounding environment.
AL Samuels   +61 more
core   +8 more sources

X‐Ray Tomography Analysis of Damage Mechanisms in Metal Matrix Syntactic Foams During Compression

open access: yesAdvanced Engineering Materials, EarlyView.
In situ synchrotron X‐ray tomography is used to investigate the internal damage mechanisms of AlSi12 metal matrix syntactic foam with ceramic hollow spheres during compressive loading. It is concluded that a homogeneous distribution of the second‐phase filler material results in a sequential collapse in a localized region; this leads to controlled and ...
Indrajeet Tambe   +8 more
wiley   +1 more source

Apolar Annonaceous Acetogenins from the Fruit Pulp of Annona muricata

open access: yesMolecules, 2009
A methylene chloride extract of the pulp of Annona muricata L. was fractionated in search for scarcely functionalized Annonaceous acetogenins (type E).
Pierre Champy   +3 more
doaj   +1 more source

Polymer of phosphonylmethyl-2,4- and -2,6-diamino benzene and polyfunctional monomer [PDF]

open access: yes, 1986
A phosphonyl methyl benzene is prepared by nitration to produce a 2,4-dinitro phosphonyl methyl benzene, which is then reduced to a diamino compound. The diamino compound is then used to cure a polymerizable monomer.
Kourtides, D. A., Mikroyannidis, J. A.
core   +1 more source

Recent Advancements in Bulk Processing of Rare‐Earth‐Free Hard Magnetic Materials and Related Multiscale Simulations

open access: yesAdvanced Engineering Materials, EarlyView.
This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley   +1 more source

Benzoquinonas, hidroquinonas e sesquiterpenos de Auxemma glazioviana Benzoquinones, hydroquinones and sesquiterpenes of Auxemma glazioviana

open access: yesQuímica Nova, 2005
Two new compounds, 5 and 8, and an epimeric mixture 4a/4b were isolated from hardwood of Auxemma glazioviana. Their structures and relative configurations were determined by modern spectroscopic analysis to be rel-10alpha,11alpha-epoxy-11beta-ethoxy ...
Jose Galberto M. Costa   +5 more
doaj   +1 more source

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