Results 61 to 70 of about 1,726,931 (142)

Thermo-oxidative aging of epoxy coating systems [PDF]

open access: yes, 2014
tThe thermo-oxidative behavior of unformulated (unfilled) samples of epoxy coatings has been studiedat five temperatures ranging from 70◦C to 150◦C. Two epoxy networks based on diglycidyl ether ofbisphenol A (DGEBA), respectively, cured by jeffamine ...
ZAHRA, Yahya   +4 more
core   +1 more source

Novel Cucurbitane Triterpenoids and Anti-cholinesterase Activities of Constituents from L

open access: yesNatural Product Communications, 2014
The C-19 epimers of 5β,19-epoxycucurbita-6,23( E ),25(26)-triene-3β,19-diol ( 1 ) and 5β,19-epoxy-25-methoxycucurbita-6,23-diene-3β,19-diol ( 2 ) along with (19 R , 23 E )-5β,19-epoxy-19-methoxycucurbita-6,23,25-trien-3β-ol ( 3 ), (23 E )-5β,19 ...
Wichuta Kuanhut   +3 more
doaj   +1 more source

Formation of the 5,6-epoxy derivatives of 7-liydroxy-cholesteryl 3β-acetates during peroxidation of cholesteryl acetate.

open access: yesGrasas y Aceites, 1999
The thermal peroxidation of cholesteryl acetate (CA) generates many compounds, most of which have been identified in previous studies. The trimethylsilyl (TMS) derivatives of the thermodegradation products of the single hydroperoxides of CA (7α- and 7β-)
G. Lercker, R. Bortolomeazzi, L. Pizzale
doaj   +1 more source

Shape memory performance of asymmetrically reinforced epoxy/carbon fibre fabric composites in flexure [PDF]

open access: yes, 2013
In this study asymmetrically reinforced epoxy (EP)/carbon fibre (CF) fabric composites were prepared and their shape memory properties were quantified in both unconstrained and fully constrained flexural tests performed in a dynamic mechanical analyser ...
Fejős, M., J. Karger-Kocsis, M. Fejos
core   +1 more source

Tensile and Compressive Properties of Kaolin Rienforced Epoxy

open access: yesAl-Khawarizmi Engineering Journal, 2015
The toughening of epoxy resins with the addition of organic or inorganic compounds is of great interest nowadays, considering their large scale of applications.
Jabbar Hussein Mohmmed
doaj   +4 more sources

Phase separation and mechanical properties of epoxy / thermoplastic blends [PDF]

open access: yes, 2003
Thermosetting epoxy resins blended with aromatic thermoplastics are of significant commercial interest in several areas including aerospace, transportation and electronics.
Emmerson, Gordon T., Emmerson, Gordon T
core  

Thermal degradation behavior and pyrolysis products of electrical-grade epoxy resins under extreme thermal conditions

open access: yesMaterials Research Express
The pyrolysis behaviour of three epoxy resin systems commonly used in electrical power equipment was comparatively investigated to elucidate structure-dependent degradation pathways and product evolution under extreme thermal conditions ...
Xiaofeng Chen   +7 more
doaj   +1 more source

Sterols from the Green Alga Ulva australis

open access: yesMarine Drugs, 2017
Three new sterols, (24R)-5,28-stigmastadiene-3β,24-diol-7-one (1), (24S)-5,28-stigmastadiene-3β,24-diol-7-one (2), and 24R and 24S-vinylcholesta-3β,5α,6β,24-tetraol (3), together with three known sterols (4–6) were isolated from the green alga Ulva ...
Guo-Liang Li   +7 more
doaj   +1 more source

Diterpene Foliar Exudates of and Phytotoxicity of Clerodanes

open access: yesNatural Product Communications, 2014
Blakiella bartsiifolia (S.F. Blake), an endemic and rare high altitude plant of the northern Andes, appears well adapted to the prevailing harsh environment owing in part to a thick glandular trichome cover.
Diego Rodriguez-Hernandez   +3 more
doaj   +1 more source

Obtenção de nanocompósitos de resina epóxi/montmorilonita-polipirrol: avaliação das propriedades físico-químicas [PDF]

open access: yes, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2015.Neste trabalho foram preparados aditivos nanoestruturados de Montmorilonita ...
Contri, Giseli
core  

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