Results 111 to 120 of about 376 (154)
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Curing and pyrolysis of cresol novolac epoxy resins containing BABODOPN
Polymer Engineering & Science, 2005Abstract This work investigates the curing kinetics, thermal stability, flammability, and decomposition kinetics of cresol novolac epoxy (CNE) cured with two curing agents, [1,4‐bis(3‐aminobenzoyloxy)‐2‐(6‐oxido‐6h‐dibenz(c,e)(1,2) oxaphosphorin‐6‐yl)‐naphthalene] (BABODOPN) and diamino diphenyl methane (DDM). The
S.P. Rwei +3 more
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MRS Proceedings, 1986
AbstractImpurities, especially chemically bonded impurities, of o-cresol novolac epoxy resins and their influence on the moisture resistance and other properties of the epoxy molding compounds have been investigated to clarify the influence of impurities of epoxy resins on the reliability of encapsulated semiconductor.
Shuichi Kanagawa, Yutaka Terada
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AbstractImpurities, especially chemically bonded impurities, of o-cresol novolac epoxy resins and their influence on the moisture resistance and other properties of the epoxy molding compounds have been investigated to clarify the influence of impurities of epoxy resins on the reliability of encapsulated semiconductor.
Shuichi Kanagawa, Yutaka Terada
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Toughening of epoxy novolac resin using cardanol based flexibilizers
Journal of Applied Polymer Science, 2015ABSTRACTIn this work, two different cardanol based epoxies (Cardolite NC‐514 and Cardanol NC‐547) were employed as flexibilizers to toughen an epoxy novolac resin namely, poly[(phenylglycidyl ether)‐co‐formaldehyde] (PPGEF). 4,4′‐Diamino‐3,3′‐dimethyl dicyclohexyl methane (BMCHA) was used as a curing agent. Differential scanning calorimetry and dynamic
Rajeshwari S. Gour +2 more
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Hybrid Polymer Networks of Epoxy Resin and Substituted Phenolic Novolacs
International Journal of Polymeric Materials, 2006Hybrid polymer networks of diglycidyl ether of bisphenol (DGEBA) resin and phenolic novolac resins were prepared and tested for mechanical properties, hardness, and water absorption. The novolacs employed were based on each of phenol and substituted phenols such as p-cresol, t-butyl phenol, and cardanol.
K. P. Unnikrishnan, Eby Thomas Thachil
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EPOXY CRESOL NOVOLAC RESIN Low Molecular Weight
2017<div class="section abstract"> <div class="htmlview paragraph">This specification covers a prepolymer in the form of a low molecular weight epoxy cresol novolac (ECN) resin.</div></div>
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Preparation and curing kinetics of bisphenol A type novolac epoxy resins
Journal of Applied Polymer Science, 2005AbstractA bisphenol A type novolac resin (Bis‐ANR) was synthesized from bisphenol A and formaldehyde; the resulting novolac was epoxidized to generate a bisphenol A type novolac epoxy resin (Bis‐ANER). The chemical structures of Bis‐ANR and Bis‐ANER were confirmed by 1H‐NMR spectroscopy and IR spectroscopy; the molecular weights and molecular weight ...
Yanfang Liu +3 more
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Colloids and Surfaces B: Biointerfaces, 2018
Microcapsules (MCs) prepared with diverse wall material structures may exhibit different properties. In this study, MCs were fabricated with three kinds of epoxy phenolic novolac resins (EPNs), which possessed unique epoxy values as wall-forming materials by interfacial polymerization.
Feng Liu +2 more
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Microcapsules (MCs) prepared with diverse wall material structures may exhibit different properties. In this study, MCs were fabricated with three kinds of epoxy phenolic novolac resins (EPNs), which possessed unique epoxy values as wall-forming materials by interfacial polymerization.
Feng Liu +2 more
exaly +3 more sources
Synthesis of novolac on the basis of bisphenol A as curing agent for epoxy resins
Die Angewandte Makromolekulare Chemie, 1992AbstractBisphenol A novolacs were synthesized in a melting process using paraformaldehyde, and in a solution process using a formalin solution and oxalic acid catalyst. 1H‐NMR investigations show a higher content of methylene bridges in the novolacs synthesized in a melting process. These novolacs were analysed by HPLC, GPC, DSC and FT‐IR spectroscopy.
Veronika Strehmel +4 more
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Morphology and Properties of Bisphenol-A Novolac Epoxy Resin with Polysulfone Blends
International Journal of Polymer Analysis and Characterization, 2011Polysulfone (PSF) was blended into bisphenol-A novolac epoxy resin (bis-ANER) diluted with vinyl cyclohexene dioxide (VCD), and the mixture was cured with methylhexahydrophthalic anhydride (MHHPA). The cured bis-ANER/VCD/MHHPA/PSF developed a bi-continuous morphology consisting of two distinct domains: one of the domains is an epoxy-rich matrix ...
Zhao Liu +4 more
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Aging and Thermal Studies on Epoxy Resin Modified by Epoxidized Novolacs
Polymer-Plastics Technology and Engineering, 2006ABSTRACT Epoxy resins are thermosetting polymers widely used for polymer composites, adhesives, high performance coatings, potting and encapsulation, and numerous other applications. These resins have excellent mechanical and electrical properties, low cure shrinkage, and good adhesion to most substrates. This study is an attempt to improve the thermal
K. P. Unnikrishnan, E. T. Thachil
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