Thermo mechanical behaviour of unsaturated polyester toughened epoxy–clay hybrid nanocomposites

Chozhan, C. Karikal; Alagar, Muthukaruppan; Sharmila, Rajkumar Josephine; Gnanasundaram, P.

doi:10.1007/s10965-007-9114-x

Cited by 80 publications

(33 citation statements)

References 54 publications

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“…The absorption peaks at 2869 and 2921 cm À1 are attributed to CAH symmetric and asymmetric stretching vibration [24]. The absorption peaks at 1607, 1582 and 1508 cm À1 are associated with characteristic adsorptions of the benzene ring of epoxy or C@C stretching of aromatic ring [25]. The absorption bands at 1362 and 1453 cm À1 can be attributed to CH 3 and CH 2 bending vibration, respectively [26].…”

Section: Ftir Analysis Of Epoxy Based Nanocompositesmentioning

confidence: 99%

Effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites

Alamri¹,

Low²

2012

Materials & Design

235

150

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a b s t r a c tThis study aimed to investigate the effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites as well as to study the influence of different types of nano-fillers such as nano-clay platelets, halloysite nanotubes (HNTs) and nano-silicon carbide (n-SiC) particles on the water absorption behaviour of epoxy based nanocomposites. Results indicated that the addition of nano-fillers into epoxy matrix was found to decrease both water uptake and diffusivity compared to unfilled epoxy. Flexural strength and modulus of epoxy based nanocomposites were found to decrease due to the water absorption. However, the addition of nano-fillers enhanced the flexural strength and modulus of nanocomposites compared to wet unfilled epoxy. Surprising, fracture toughness and impact strength of all types of nanocomposites were found to increase after exposing to water. The presence of nano-fillers increased both fracture toughness and impact strength of nanocomposites compared to wet neat epoxy.Crown

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Section: Ftir Analysis Of Epoxy Based Nanocompositesmentioning

confidence: 99%

Effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites

Alamri¹,

Low²

2012

Materials & Design

235

150

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“…Similarly, introduction of organic clay and CMDI into epoxy improves strength, elasticity and impact strength according to percentage of these additives [360][361][362][363].…”

Section: Intercalated Network Compositesmentioning

confidence: 99%

Physical Chemistry of Intercalated System

Pomogailo

Джардималиева

2014

Nanostructured Materials Preparation via Condensation Ways

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The driving force of development of intercalation chemistry is significant improvement of properties of fabricated nanocomposites and design of materials with new properties. Forming hybrid structures (sometimes called "ship-in-the-bottle") define important functional characteristics: improved mechanical strength (increase in modulus), enhanced stiffness, heat resistance (decrease in thermal expansion coefficient), heat stability, and other thermal physical properties, water resistance, interesting barrier properties for gas separation, high flame and fire resistance, electric and electrochemical behavior, size stability, chemical stability, different from the simple additive properties [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].Hybrid-phase nanocomposites [21] are not only of academic, but of commercial interest, because they posses improved mechanical and thermal properties as compared with the same content of conventional fillers (such as carbon soot or deposited silica gel). The methods of production of hybrid nanocomposites from polymer solutions or polymerization in situ in combination with delamination and exfoliation were already studied at the end of the last century (for example, [22,23]). However, there were technological drawbacks: these methods had low correlation with polymer production and demanded great amounts of organic solvents. At the beginning of 1990s more convenient technique appeared on the basis of PEO (polyethylene-oxide) and MMT (montmorillonite), which advantageously demonstrated the intercalation process in the polymer melt, as well as potential applications of the obtained products in solid phase electrolytes of recharged lithium batteries.However, highly promising commercial strategy in this problem was formulated after the group of researchers of Toyota company [24][25][26] had found extraordinary strengthening of mechanical properties of polymer-layered nylon-based nanocomposites, which was caused by extremely large surface contacts of the ingredients and high aspect ratio reached in the intercalation/exfoliation process, and by homogenous dispersion of silica plates in the polymer matrix [27,28]. On the one hand, these functional materials have a relation to nanocomposites via

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“…[1][2][3][4][5] Epoxy resin is a versatile and widely accepted matrix material for the fabrication of advanced composites, hardware components, electronic circuit board materials, radar domes, and missile equipment components because of its excellent bonding, physico-chemical, thermal, mechanical, dielectric, and aging characteristics. [6][7][8][9][10] Epoxy resin is also widely used as molding compounds and encapsulation materials for electronic components. However, cured epoxy resins are generally brittle and exhibit inferior weathering resistance.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and physico-chemical studies of unsaturated polyester polyol of multifunctional epoxy resin containing s-triazine ring and its jute/glass composites

Ghumara

Adroja

Parsania

2013

Designed Monomers and Polymers

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Unsaturated polyester polyol of 2,4,6-tris (4-hydroxyphenyl)-1-3-5-triazine (ETPUP) was synthesized and styrene was added as a reactive diluent (ETPUPSt). The structure of ETPUP was supported by FTIR and 1 H NMR spectroscopic techniques. ETPUP is thermally stable up to about 230°C and followed multistep degradation reactions with 0.2-3.83 order kinetics leaving 48.9% residue at 700°C confirming formation of highly thermally stable cross-linked product. Jute and glass composites of ETPUPSt were fabricated by hand lay-up technique followed by compression molding under 27.58 MPa pressure and at 100°C for 4 h. J-ETPUPSt and G-ETPUPSt showed respectively 21.7 and 138.3 MPa tensile strength; 31.9 and 29.5 MPa flexural strength; 1.8 and 2.2 kV mm −1 electric strength; and 2.7 × 10 14 and 2.1 × 10 15 Ohm cm volume resistivity. Both J-ETPUPSt and G-ETPUPSt showed excellent hydrolytic stability even in harsh acidic and saline environments and also in boiling water. Observed equilibrium water content at 35°C for J-ETPUPSt and G-ETPUPSt in water, 10% of aq NaCl, and 10% of aq HCl are 19, 16.3, and 21.3%; 9.2, 7.2, and 10.4%, respectively. Both the composites may be useful for load bearing housing units, and in electrical, electronic, and marine fields.

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Thermo mechanical behaviour of unsaturated polyester toughened epoxy–clay hybrid nanocomposites

Cited by 80 publications

References 54 publications

Effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites

Effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites

Physical Chemistry of Intercalated System

Synthesis and physico-chemical studies of unsaturated polyester polyol of multifunctional epoxy resin containing s-triazine ring and its jute/glass composites

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