Results 11 to 20 of about 947 (216)

Synthesis of Polyurethane Based on (Resol Novolac Resin- Polyethylene Glycol) Copolymer and Their Analytical Study

open access: yesJournal of Kufa-Physics, 2019
Resol novolac resin was prepared by condensation of novolac resin with formalin solution in the presence of sodium hydroxide as catalyst, then new copolymer were prepared by reaction of this resin with polyethylene glycol.
Maiada Abdulaa Adnan
doaj   +2 more sources

Modification of graphene with silica nanoparticles for use in hybrid network formation from epoxy, novolac, and epoxidized novolac resins by sol-gel method: Investigation of thermal properties

open access: yeseXPRESS 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
doaj   +2 more sources

A new strategy for the synthesis of modified novolac resin and its polymer/clay nanocomposite

open access: yeseXPRESS Polymer Letters, 2019
A novel epoxy nanocomposite composed of epoxidized novolac (ENR), epoxidized polystyrene (EPSt), and nanoclay was fabricated and characterized successfully.
R. Mohammad-Rezaei   +4 more
doaj   +2 more sources

Synthesis, Characterization and Application of Coatings Based on Epoxy Novolac and Liquid Rubber Blend [PDF]

open access: yesE-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
doaj   +2 more sources

Hybrid In Situ Reinforcement of EPDM Rubber Compounds Based on Phenolic Novolac Resin and Ionic Coagent

open access: yesApplied Sciences, 2022
For the design of stretchable and flexible high-performing materials, the reinforcement of elastomeric grades plays a crucial role. State-of-the-art fillers such as carbon black benefit from a high reinforcement but often negatively affect the processing
Lara Strohmeier   +4 more
doaj   +2 more sources

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   +2 more sources

Propargylated Novolac Resins for Solvent-Free Technology for High-Performance Composites

open access: yesEurasian Chemico-Technological Journal, 2018
Propargyl substituted novolac phenolic resin diluted with unsaturated bisphenol-A ethers was used for glass fiber solvent-free impregnation for the formation of high-performance composites.
D. Kalugin   +6 more
doaj   +3 more sources

Characterization of a novolac resin substituting phenol by ammonium lignosulfonate as filler or extender

open access: yesBioResources, 2007
In this work two types of lignin-novolac resins have been formulated, partially substituting phenol by softwood ammonium lignosulfonate as filler or extender (methylolated) to study the viability of that substitution when resins will be employed as ...
Pérez, J. M.   +4 more
doaj   +1 more source

Investigation on the Flame Retardant Properties and Fracture Toughness of DOPO and Nano-SiO2 Modified Epoxy Novolac Resin and Evaluation of Its Combinational Effects. [PDF]

open access: yesMaterials (Basel), 2019
In this study, the flame-retardant, thermal and mechanical properties of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and nano-SiO2 modified epoxy novolac resin is evaluated, and the combinational effects of both additives are verified. As a
Häublein M   +5 more
europepmc   +2 more sources

High-capacitance supercapacitors using nitrogen-decorated porous carbon derived from novolac resin containing peptide linkage [PDF]

open access: yes, 2010
We fabricated nitrogen-decorated porous carbon exhibiting high capacitance per unit volume and unit weight via chemical activation of novolac resin containing peptide linkage.
Park, Ki Chul   +10 more
core   +2 more sources

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