Multifunctional epoxy resins: Synthesis and characterization

Mustaţă, Fanica; Bicu, Ioan

doi:10.1002/1097-4628(20000912)77:11<2430::aid-app11>3.3.co;2-g

Cited by 28 publications

(34 citation statements)

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“…However, the increment of the resin functionality has resulted in a new group of materials with improved properties regarding bifunctional resin. Multifunctional resin are characterized by a functionality degree between 3 and 5 which provides a very high crosslink density and higher glass-transition temperatures, as well as improvements in the mechanical, physical and adhesive properties [1]. One common way of producing the crosslinking is through the resin reaction with curing agents, usually amines of different functionalities like the diaminodiphenylsulfone (DDS).…”

Section: Introductionmentioning

confidence: 99%

Curing FTIR study and mechanical characterization of glass bead filled trifunctional epoxy composites

Sánchez‐Soto

Pagès

Lacorte

et al. 2007

Composites Science and Technology

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Section: Introductionmentioning

confidence: 99%

Curing FTIR study and mechanical characterization of glass bead filled trifunctional epoxy composites

Sánchez‐Soto

Pagès

Lacorte

et al. 2007

Composites Science and Technology

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“…The tetraglycidyl 4, 4′-diamino diphenyl methane (TGDDM) resin was synthesized from epichlorohydrin and diamino diphenyl amine using 30% NaOH solution as catalyst according to the reported procedure [23]. A pale brown resin (yield 80%) resulted has been purified and analyzed for its epoxy equivalent (105.5 g.eq-1) and preserved for further use.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and characterization of organic-inorganic hybrid clay filled and bismaleimide—siloxane modified epoxy nanocomposites

Anbazhagan

Alagar

Gnanasundaram

2011

Int J Plast Technol

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Organic-inorganic hybrids involving organo-modified montmorillonite (OMMT) clay and tetraglycidyl diamino diphenyl methane epoxy (TGDDM) were prepared via in situ polymerization by the homogeneous dispersion of various percentages (1-5% w/w) of clay in epoxy matrix resin. The resulting homogeneous epoxy-clay hybrids were modified with 10 wt% of hydroxyl terminated polydiemthyl siloxane (HTPDMS) using γ-aminopropyltriethoxysilane (γ-APS) as coupling agent in the presence of tin catalyst. The siliconized epoxy-clay prepolymers were further modified separately with 15 wt% of bismaleimide (BMI) monomers and cured with diaminodiphenylmethane. The reactions involved during the curing process between epoxy resin, siloxane and BMI were confirmed by using FTIR and DSC curing analysis. The differential scanning calorimetry (DSC) show that the significant increase in glass transition temperatures in the clay filled hybrid epoxy systems than that of neat epoxy resin. The data obtained from thermal studies indicates that the appreciable improvement in hybrid systems was due to the incorporation of MMT clay, BMI and siloxane into epoxy systems. Scanning electron microscopy (SEM) of the hybrid systems show that the homogenous morphology. X-ray diffraction analysis of the clay hybrid systems shows that the amorphous diffraction patterns and the peaks are broadened and nearly disappeared after 24 h swelling, suggesting the formation of exfoliated structure.

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“…This weight loss may be due to either Also it was noted that UPE (I a -IV a ) resins, were more thermally stable than UPE (I b-IV b ) resins. The increment in the resin functionality provides a very high crosslinking density as well as improvements in the mechanical, chemical and electrical properties [39]. Above 700°C, a stable residue is formed that corresponds to carbon black.…”

Section: Thermal Properties Of Upe Resinsmentioning

confidence: 99%

Novel unsaturated polyester resins based on (maleated cyclohexanone-formaldehyde resin)-(epoxy resin) condensation

Patel

Naji

2010

Int J Plast Technol

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Cyclohexanone-formaldehyde (CHF) resins with different hydroxyl value were treated with maleic anhydride (MA) stoichiometrically. The resultant carboxy unsaturated CHF resins were then polycondensated with various epoxy resins (i.e. diglycidylether of various bisphenols) in the presence of pyridine. The unsaturated CHF resins thus obtained and unsaturated polyesters (UPE's) were characterized by unsaturation, spectral studies, and by number average molecular weight (Mn) estimated by vapor pressure osmommetry (VPO). The curing of UPE's was carried out by using benzoyl peroxide (BPO) as catalyst and monitored on differential scanning calorimeter (DSC). Based on DSC data, glass fiber reinforced composites (i.e. laminates) of these UPE's were fabricated, maintaining 40/60 proportion of resin to glass fiber. The laminates thus formed were tested for chemical, mechanical, and electrical properties. The unreinforced cured samples of UPE's resins were also analyzed thermogravimetrically.

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Multifunctional epoxy resins: Synthesis and characterization

Cited by 28 publications

References 0 publications

Curing FTIR study and mechanical characterization of glass bead filled trifunctional epoxy composites

Curing FTIR study and mechanical characterization of glass bead filled trifunctional epoxy composites

Synthesis and characterization of organic-inorganic hybrid clay filled and bismaleimide—siloxane modified epoxy nanocomposites

Novel unsaturated polyester resins based on (maleated cyclohexanone-formaldehyde resin)-(epoxy resin) condensation

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