Effect of polysulfide modifier on mechanical and morphological properties of epoxy/phthalic anhydride system

Arundhati,; Singhal, Reena; Nagpal, A. K.

doi:10.1007/s12588-009-0015-1

Cited by 7 publications

(5 citation statements)

References 20 publications

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“…2 indicates that tensile strength decreased considerably from 71 to 61 MPa as phenoxy content increased from 10 to 40 phr in all DGEBA/phenoxy blend and it is maximum 71 MPa for D1 blend. The above trend proved that the increase in relative amount of dissolved phenoxy, the molecular weight & viscosity of [17]. Figure 3 indicates that, as the phenoxy content increases from 10 to 40 phr, the tensile modulus of the DGEBA/phenoxy blends also decreased from 2825 to 2230 MPa.…”

Section: Tensile Propertiesmentioning

confidence: 67%

Influence of phenoxy modifier on mechanical, electrical and morphological properties of epoxy/DDS system

Dixit

Nagpal

Singhal

2010

Int J Plast Technol

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The blends of diglycidyl ether of bisphenol-A (DGEBA) and poly (hydroxyl ether of bisphenol-A) or phenoxy were synthesized by melt blending at 120°C. These blends were cured by an aromatic amine hardener, 4,4′-diaminodiphenyl sulphone (DDS). The experiments were performed to study the different amount of phenoxy (10 to 40 parts per hundred resins) on mechanical and electrical properties of the DGEBA/phenoxy blends, such as tensile properties, flexural properties, impact strength, Rockwell hardness, and volume resistivity. The oxirane group of DGEBA epoxy resin reacts with hydroxyl group of phenoxy which provides good toughness to the epoxy resin. The tensile strength, tensile modulus, flexural strength, flexural modulus, heat deflection temperature and volume resistivity of DGEBA/phenoxy blends decreased with increasing the amount of phenoxy from 10 to 40 parts per hundred resins (phr). The opposite trend was observed in impact strength and Rockwell hardness of all DGEBA/phenoxy blends which were increased with increasing the phenoxy content from 10 to 20 phr, but then decreased upto 40 phr. The SEM studies revealed that the DGEBA/phenoxy blends show a multiphase system with an increase in the phenoxy content from 10 to 40 phr. due to inconvenience of mixing of two phases.

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Section: Tensile Propertiesmentioning

confidence: 67%

Influence of phenoxy modifier on mechanical, electrical and morphological properties of epoxy/DDS system

Dixit

Nagpal

Singhal

2010

Int J Plast Technol

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“…30). They provide excellent adhesion properties [40,164,165]. A common isocyanate hardener is 4,4'-diphenylmethane diisocyanate (Fig.…”

Section: Thiols and Isocyanatesmentioning

confidence: 99%

Control of reactions and network structures of epoxy thermosets

Vidil¹,

Tournilhac²,

Musso

et al. 2016

Progress in Polymer Science

312

252

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Recent advances in macromolecular chemistry have revolutionized the way we perceive the synthesis of polymers. Polymerization, to be modern, must be "controlled", which usually means capable of producing macromolecules of well-defined structure. The purpose of this review is to examine how the chemistry of epoxy resins, an almost century-old chemistry, is also involved in this movement. Epoxy resins are characterized by both the flexibility of implementation and the qualities of the polymers obtained. Key materials in health-, mobility-and energy related technologies, these resins are heavily present in high-performance composites, electronic boards, adhesives and coatings. Currently, a large number of resins and hardeners are available on the market or described in the literature and an interesting point is that almost any combination of the two is possible. Common to all these recipes and processes is that a liquid (or soluble) resin at some point becomes insoluble and solid. It is very important to know how to manage this transition, physically known as the gel point, as it is the point after which the shape of the object is irreversibly set. Taking into account the variety of epoxy polymerization processespolyaddition, anionic or cationic polymerization-we detail a number of methods to program the occurrence of the gel point and how this type of control affects the structure of the growing network.

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“…In case of tensile strength, similar trend can be found in accordance with previous reports. 59 Same perspective can be adopted for tensile strength to assess this behavior.…”

Section: Tensilementioning

confidence: 99%

Epoxy/graphene oxide/liquid polysulfide ternary nano-composites: rheological, thermal and mechanical, characterization

Nasab

Kalaee

2016

RSC Adv.

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Effect of polysulfide modifier on mechanical and morphological properties of epoxy/phthalic anhydride system

Cited by 7 publications

References 20 publications

Influence of phenoxy modifier on mechanical, electrical and morphological properties of epoxy/DDS system

Influence of phenoxy modifier on mechanical, electrical and morphological properties of epoxy/DDS system

Control of reactions and network structures of epoxy thermosets

Epoxy/graphene oxide/liquid polysulfide ternary nano-composites: rheological, thermal and mechanical, characterization

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