Modification of epoxy resin with kaolin as a toughening agent

Fellahi, S.; Chikhi, Nourdine; Bakar, M.

doi:10.1002/app.1918

Cited by 77 publications

(58 citation statements)

References 45 publications

(11 reference statements)

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“…Kaolin has been used as filler, and also as toughening agent for unsaturated polyester and epoxy resin, and the properties of these composites have been studied. 11,12 Mechanical properties, water absorption, and chemical resistance of the composites are important, since these materials are continuously exposed to different chemicals during their end use. So, the authors thought that it would be useful if studies were carried out in this direction.…”

Section: Introductionmentioning

confidence: 99%

Flexural, compression, chemical resistance, and morphology studies on granite powder‐filled epoxy and acrylonitrile butadiene styrene‐toughened epoxy matrices

Ramakrishna

Priya

2007

J of Applied Polymer Sci

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Granite powder is an inexpensive material that can reduce the overall cost of a composite if used as a filler in epoxy and acrylonitrile butadiene styrene (ABS)-toughened epoxy matrices. Epoxy and ABS-toughened epoxy resins filled with granite powder were cast into sheets. To enhance the properties of these composites, granite powder was treated with triethoxymethyl silane coupling agent. Flexural properties, compression properties, chemical resistance, and morphology of these composites were studied. The filler used varied from 0 to 60 wt %. Composites consisting of ABS-toughened epoxy with treated granite powder were found to be superior in mechanical properties to composites with treated and untreated granite powder. Composites with 50 wt % of granite powder was found to have maximum mechanical properties in all cases. All the three composites, i.e., untreated, treated and ABS toughened composites showed good resistance toward, acids, alkalis, and solvents. Treating granite powder with silane coupling agent enhances its mechanical properties and improves the interfacial bond between granite powder and the matrix.

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Section: Introductionmentioning

confidence: 99%

Flexural, compression, chemical resistance, and morphology studies on granite powder‐filled epoxy and acrylonitrile butadiene styrene‐toughened epoxy matrices

Ramakrishna

Priya

2007

J of Applied Polymer Sci

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“…Of the thermoset polymers studied, a significant amount of research has been performed on nanocomposites with epoxy resins. In those studies, the epoxy polymerization reaction, [11][12][13] thermal and mechanical properties, [14][15][16] and the addition of different clay modifiers [17][18][19] were analyzed. However, phenolic resin/clay nanocomposites have not been studied as much as epoxy resins.…”

Section: Introductionmentioning

confidence: 99%

Structure‐properties relationship in resol/montmorillonite nanocomposites

Manfredi

Puglia

Kenny

et al. 2007

J of Applied Polymer Sci

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Polymer/layered silicate nanocomposites were prepared, adding modified, and nonmodified montmorillonites to a resol resin. It was observed that the composites exhibited an intercalated disordered structure by means of X-ray diffraction (XRD) and transmission electronic microscopy. The crosslinking density of the resol network was greatly influenced by the presence and type of clay that was added to the resin. The composites filled with the modified montmorillonites showed a lower glass transition temperature value as well as a higher degradation peak at $ 4008C, which is characteristic of the degradation of methylene bridges, indicating a decrease in the crosslinking density of the resol network when modified clays are added. Resol/ unmodified montmorillonite composites exhibited different behavior comparing to the other composites and the resol. A higher thermal resistance was observed in the fragmentation zone and a different tan d response was seen in the DMA analysis. These differences in the behavior of the composites could be because of the interaction between the resol prepolymer and the clay modifiers and as a result of their chemical compatibility. The hardness and elastic modulus of the resol were improved with the addition of clays. However, higher values were obtained for the composite made with the more dispersed montmorillonite.

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“…They are attributed to coalescence of many tension-induced microcracks inclined at an angle to the overall fracture plane (Ref 11). These lines extended approximately along the crack-propagation direction and are related with the arrest point of the crack front ( Ref 12,13). In the brittle areas the morphology changes, the hackle markings and scallops disappears.…”

Section: Resin Characterizationmentioning

confidence: 98%

Fiber Reinforced Polyester Resins Polymerized by Microwave Source

Visco

Calabrese

Cianciafara

et al. 2007

J. of Materi Eng and Perform

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Polyester resin based composite materials are widely used in the manufacture of fiberglass boats. Production time of fiberglass laminate components could be strongly reduced by using an intense energy source as well as microwaves. In this work a polyester resin was used with 2% by weight of catalyst and reinforced with chopped or woven glass fabric. Pure resin and composite samples were cured by microwaves exposition for different radiation times. A three point bending test was performed on all the cured samples by using an universal testing machine and the resulting fracture surfaces were observed by means of scanning electron microscopy (SEM). The results of mechanical and microscopy analyses evidenced that microwave activation lowers curing time of the composite while good mechanical properties were retained. Microwaves exposition time is crucial for mechanical performance of the composite. It was evidenced that short exposition times suffice for resin activation while long exposure times cause fast cross linking and premature matrix fracture. Furthermore high-radiation times induce bubbles growth or defects nucleation within the sample, decreasing composite performance. On the basis of such results microwave curing activation of polyester resin based composites could be proposed as a valid alternative method for faster processing of laminated materials employed for large-scale applications.

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Modification of epoxy resin with kaolin as a toughening agent

Cited by 77 publications

References 45 publications

Flexural, compression, chemical resistance, and morphology studies on granite powder‐filled epoxy and acrylonitrile butadiene styrene‐toughened epoxy matrices

Flexural, compression, chemical resistance, and morphology studies on granite powder‐filled epoxy and acrylonitrile butadiene styrene‐toughened epoxy matrices

Structure‐properties relationship in resol/montmorillonite nanocomposites

Fiber Reinforced Polyester Resins Polymerized by Microwave Source

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