Results 71 to 80 of about 16,400 (250)

"Application of halogen moisture meter in volatile content measurement of nitrile rubber"

open access: yesHecheng xiangjiao gongye
The volatile content in nitrile rubber was measured by halogen moisture meter and compared with the results obtained by the hot-roll method. The influence of different measurement conditions on the measured results of the halogen moisture meter was ...
XU Bin, YUAN Ji-yao, XIAO Ye, CHEN Dong-ping, YING Chan-juan, GUAN Yan
doaj   +1 more source

Electrochemical Dehydration of Carboxamides to Their Nitriles

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Electrochemical dehydration of carboxamides to nitriles is achieved using thiocyanate‐mediated activation, avoiding stoichiometric reagents. In an undivided cell at ambient conditions, 18 aromatic and aliphatic substrates give good‐to‐excellent yields (up to 84%) with functional‐group tolerance. Cyclic voltammetry supports an EC‐type‐mediated oxidation.
Enrico Lunghi   +2 more
wiley   +1 more source

Rapid measurement of bound acrylonitrile content in nitrile rubber slurry using low-field nuclear magnetic resonance analysis technology

open access: yesHecheng xiangjiao gongye
The bound acrylonitrile content in nitrile rubber slurry was measured by chemical titration method, the spectral data of the slurry collected by nuclear magnetic resonance analyzer were correlated, the calibration set and validation set were divided by ...
LI Yana, ZHONG Ming-lib
doaj   +1 more source

Zeolite-filled silicone rubber membranes : Part 1. Membrane preparation and pervaporation results [PDF]

open access: yes, 1987
Amongst the alternative fuels obtained from renewable resources alcohol from fermentation may become one of the most important. The combination of fermentation with pervaporation in a membrane bioreactor offers the advantage of continuous processing.
Bargeman, D.   +3 more
core   +3 more sources

A General Platform for the Light‐Enabled Generation of α‐Fluoro Radicals Leveraging Simple Additives

open access: yesHelvetica Chimica Acta, EarlyView.
A catalyst‐free, visible‐light protocol enables mild generation of α‐fluoro radicals from α‐halo fluorinated precursors using sodium iodide and 2,6‐lutidine. In situ halide exchange and C–I homolysis afford broad access to fluorinated esters, sulphones, and nitriles via coupling with diverse partners.
Jonas Klagge   +2 more
wiley   +1 more source

Indole‐Based π‐Extended Monophosphine Ligands for Enhanced Palladium‐Catalyzed Sonogashira Coupling

open access: yesJournal of Heterocyclic Chemistry, EarlyView.
A general palladium‐catalyzed Sonogashira cross‐coupling of (hetero)aryl chlorides with aliphatic, (hetero)aryl alkynes is described using Pd(dba)₂/PCy2‐Napdole‐phos catalyst system. The reaction protocol exhibits broad substrate scope and the catalyst loading can be down to 0.2 mol% Pd.
Yu Kiu Lau   +9 more
wiley   +1 more source

Effect of hydraulic fluid (MIL-H-83282) on selected commercial O-ring compounds [PDF]

open access: yes
Acrylonitrile and fluorocarbon compounds were evaluated at various temperatures and time intervals in samples of the fluid obtained from three qualified suppliers. It was concluded that both polymers can function in hydraulic fluids within the conditions
Stone, W. P., Wood, T. E.
core   +1 more source

Recent Advances in Conductive Rubber Composites: Progress, Challenges, and Emerging Opportunities

open access: yesMacromolecular Rapid Communications, EarlyView.
This study reviews the recent advances in conductive rubber composites, focusing on key aspects such as material selection, conductive mechanisms, interfacial engineering, processing methods, vulcanization strategies, and practical applications. It also discusses current challenges and highlights emerging directions that are shaping the development of ...
Lu Yin   +3 more
wiley   +1 more source

The band gap variation of a two dimensional binary locally resonant structure in thermal environment

open access: yesAIP Advances, 2017
In this study, the numerical investigation of thermal effect on band gap dynamical characteristic for a two-dimensional binary structure composed of aluminum plate periodically filled with nitrile rubber cylinder is presented.
Zhen Li, Xian Wang, Yue-ming Li
doaj   +1 more source

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