Results 11 to 20 of about 585 (182)
The production of novolac oligomers
Chimica Techno Acta, 2016 The paper presents the improvement of production technology of novolac phenol-formaldehyde oligo-mers by introducing the new scheme of capture of exhaust gases due to waste production, which leads to a reduction of costs and increase economic efficiency.
A. N. Galushchinsky, K. L. Obydennov
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eXPRESS Polymer Letters, 2018 Thermal stability of hybrid composites prepared from epoxy, novolac, and epoxidized-novolac resins and also modified graphene oxide (SFGO) was studied.
A. Mousavi +4 more
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Synthesis and Characterization Al2O3/Novolac/Fiberglass Nanocomposite: Modification of Thermal Stability and Thermal Insulation Properties [PDF]
Mechanics of Advanced Composite Structures, 2023 Alumina (Al2O3) nanoparticles were used as the additive for modifying a novolac phenolic resin using the solution mixing method. Different weight percentages of nano alumina 3 and 8 w% were loaded into the resin, called 3ARC and 8ARC nanocomposites ...
Mohsen Rezaei Qazviniha, Farideh Piri
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Polymerization of Phenol Formaldehyde in Solvent-Saturated Vapor and Study on the Microstructure and Mechanical Properties of Novolac Aerogel Product [PDF]
علوم و تکنولوژی پلیمر, 2014 Aerogels consist of low density open-cell foams with large void spaces of nanometer pore size and they are composed of sparsely semi-colloidal nanometer sized particles forming open porous structures.
I. Naseri +3 more
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New class of reactive novolac: synthesis of bisphenol A-based novolac with methylol groups [PDF]
Polymer Journal, 2009 We successfully prepared a new class of a reactive novolac (3) having a methylol moiety as a functional group derived from its precursor synthesized by the acid-catalyzed addition–condensation of a bisphenol A derivative and formaldehyde. Curing reaction between 3 and the low-molecular-weight phenolic resin (4) afforded the curing product, which showed
Tadamasa Nemoto, Gen-ichi Konishi
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E-Journal of Chemistry, 2009 Phenol-based novolac resins were synthesized with different mole ratios of phenol-to-formaldehyde. These novolac resins were epoxidized with molar excess of epichlorohydrin at 120 °C in basic medium.
Hemant Kumar +3 more
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Effect of novolac nanoparticles additions on specific gravity of NBR/CR blends
MATEC Web of Conferences, 2018 In this article, novolac nanoparticles with different weight fraction (0-40) wt.% were added to NBR/CR blends and investigate the effect of these additions on the specific gravity of rubber blend. The results obtained shown that the novolac nanoparticles
Al-Maamori Mohammed H. +2 more
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Curing and Decomposition Behaviour of Cresol Novolac Based Vinyl Ester Resin
Chemical Engineering Transactions, 2013 Vinyl ester resins were prepared from o, m, p-cresol epoxy novolac resin and methacrylic acid in the presence of triphenyl phosphine as catalyst and hydroquinone as polymerization inhibitor. The vinyl esterresin samples having acid value of ~ 7 mg of KOH/
S. Jaswal, B. Gaur
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An Investigation of Wood-Plastic Novolac Modified by Biomass Pyrolysis Oils [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2011 The possibility of using water insoluble fraction from biomass pyrolysis oil as additive in synthesis of Wood-Plastic novolac has been proved by using Differential Scanning Calorimetry (DSC) and Fourier Transformed Infra Red (FT-IR) spectroscopy ...
Xu Junming, Jiang Jianchun, Kang Sun
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Studying of Wear Rate for Ternary Polymer Blends under the Influence of Chemical Solutions [PDF]
Engineering and Technology Journal, 2013 This work has been done with use of Epoxy and Novolac resins mixed with either polyurethane (PUR) or polysulphide(PSR) rubbers to compose ternary polymer blends. Two groups of samples are prepared:1. Blend A (70% Epoxy +15%Novolac+15%PUR).2. Blend B (60%
Ban Ayyoub Yousif, Balkees M. Dhyaa
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