Results 71 to 80 of about 1,544 (217)

Elastic and acoustic properties determination of epoxy/polystyrene/nanoclay/red mud waste hybrid composites by ultrasonic method

open access: yesPolymer Composites, Volume 46, Issue 1, Page 930-948, 10 January 2025.
Epoxy/polystyrene/nanoclay/red mud waste hybrid composites and ultrasonic testing. Abstract Ultrasonic methods are more sensitive to defects such as voids, pores, and discontinuities that can diminish the true elastic and acoustic properties of materials compared to destructive testing.
Imran Oral   +3 more
wiley   +1 more source

Preparation and Thermal Properties of Novolac Resin/Graphite Nanosheet Composites

open access: yes, 2011
In this study, a high thermal conductivity novolac resin /graphite nanosheet composite have been prepared via in situ polymerization at the presence of sonicated expanded graphite.
Shu Hua Qi, Sha Sha Li, Peng Cao
core   +1 more source

Effect of Tetrapropylammonium Chloride Quaternary Ammonium Salt on Characterization, Cytotoxicity, and Antibacterial Properties of PLA/PEG Electrospun Mat

open access: yesBiopolymers, Volume 116, Issue 1, January 2025.
ABSTRACT In this study, poly(lactic acid) (PLA)–tetrapropylammonium chloride (TCL)–poly(ethylene glycol) (PEG) nonwoven networks were produced using PLA, PEG with different concentrations (3, 5, 7, and 9 wt%), and TCL. PEG is included as a plasticizer in PLA polymer, which has high biocompatibility but a brittle structure.
Sena Özdil Şener   +3 more
wiley   +1 more source

Distinguishing physical vs. chemical templating mechanisms for inducing graphitization in novolac matrix

open access: yesCarbon Trends
Our previous work investigated the templating ability of graphene oxide-derived additives to induce graphitization of the novolac matrix. The findings led to two working hypotheses: the additives act as templates that promote matrix aromatic alignment to
Sandra N Ike, Randy Vander Wal
doaj   +1 more source

Preparation, Identification, and Evaluation of the Thermal Properties of Novolac Resins Modified with TiO2, MgO, and V2O5 Oxides [PDF]

open access: yesMechanics of Advanced Composite Structures
It is essential to improve thermal insulation. In this study, titanium dioxide (TiO2), magnesium oxide (MgO), and vanadium pentoxide (V2O5) were used as additives to modify phenolic novolac resin by the solution mixing method.
Mohsen Rezaei Qazviniha, Farideh Piri
doaj   +1 more source

Thermoset and thermoplastic polymer composite with date palm fiber and its behavior: A review

open access: yesSPE Polymers, Volume 6, Issue 1, January 2025.
An overview of thermoset and thermoplastic polymer composite with date palm fiber. Abstract Date palm fibers possess mechanical properties to synthetic fibers, making them a promising material for fabricating sustainable composites. Date palm fibers exhibit particular hydrophilicity and good mechanical characteristics, which require for particular ...
Shahidul Islam   +5 more
wiley   +1 more source

Incorporation of unmodified technical Kraft lignin particles in anticorrosive epoxy novolac coatings

open access: yes, 2023
To protect steel structures from corrosion in harsh environments, high-performance anticorrosive coatings are commonly used. However, due to an increasing demand for environmentally friendly alternatives, there is a need to incorporate renewable raw ...
Truncali, Alessio   +5 more
core  

STUDY THE EFFECT OF ADDITION OF NATURAL AND SYNTHETIC MATERIAL ON SOME OF MECHANICAL PROPERTIES OF UNSATURATED POLYESTER

open access: yesDiyala Journal of Engineering Sciences, 2015
In this work unsaturated polyester resin was modified with a Peach waste product of peach (natural) and novolac (synthetic) polymer. With weight percentage (0, 1.5, 3.5, and 5%).
Bashar Jawad K.
doaj  

Preparation of a Novel Phosphorus-Nitrogen Containing Novolac Curing Agent for Epoxy Resin and flame-retardancy of its cured epoxy resin

open access: yesDesigned Monomers and Polymers, 2019
In this study, DICY (dicyandiamide)-containing novolac (NN) was first prepared, and then DOPO (9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) was introduced to react with the unsaturated bonds from DICY to obtain a novel phosphorus-nitrogen ...
Hui Qiao   +5 more
doaj   +1 more source

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   +1 more source

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