Thermal Characteristics of Oxazolidone Modified Epoxy Anhydride Blends

Varshney, Anuradha; Mathur, Rashmi Mohan; Prajapati, Kiran

doi:10.5539/ijc.v4n3p113

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…The phenomenon may have accounted for the occurrence of the esterification reaction between the silica and anhydride group, which produced an essential amount of heat and supplemented the vulcanization reaction. On the other hand, during the vulcanization process, it was probable that reactions between the epoxy group and anhydride group of M‐GPPE or MAH units were carried out; this reduced the effect of epoxy groups on the curing properties of the compounds.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of maleated glycidyl 3‐pentadecenyl phenyl ether as a functionalized plasticizer for styrene–butadiene rubber/carbon black/silica composites

Gong

Cen

Wang

et al. 2014

J of Applied Polymer Sci

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Maleated glycidyl 3-pentadecenyl phenyl ether (M-GPPE) was synthesized from glycidyl 3-pentadecenyl phenyl ether (GPPE), a renewable derivative from cardanol, with maleic anhydride (MAH) by grafting copolymerization. The resulting M-GPPE was used as a functionalized plasticizer for a styrene-butadiene rubber (SBR)/carbon black (CB)/silica composite. The effects of M-GPPE on the development of the filler network, the extent of silica dispersion, the curing characteristics, and the mechanical performance of the composites were studied. Meanwhile, a comparative study was performed between M-GPPE and aromatic oil, a traditional plasticizer used in SBR filler formulations. Gel permeation chromatography and IR and 1 H-NMR analysis results confirmed the occurrence of the grafting reaction between GPPE and MAH and the potential structure of M-GPPE. The thermostability of GPPE was improved by grafting copolymerization with MAH, as shown by thermogravimetric analysis results. The presence of M-GPPE resulted in a shorter curing time and better aging properties in the SBR composite compared with GPPE. The mechanical properties, dynamic mechanical analysis, and transmission electron microscopy analysis showed that the maleate of GPPE could enhance the compatibility between SBR and silica, improve the dispersion of silica in SBR, and partially replace the aromatic oil in the SBR/CB/silica composite formulation.

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Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of maleated glycidyl 3‐pentadecenyl phenyl ether as a functionalized plasticizer for styrene–butadiene rubber/carbon black/silica composites

Gong

Cen

Wang

et al. 2014

J of Applied Polymer Sci

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“…1b, FTIR spectrum shows characteristic peak for oxazolidone at 1754 cm −1 whereas the peak for epoxy group of ECAO at 831 cm −1 is almost non-existent, indicating that all the epoxy groups have been consumed. 21 Therefore the enhanced biodegradability could be partly caused by the chemical linkage of the BIOU or by the degree of chain-extention.…”

Section: Thermal and Mechanical Properties Of Bioumentioning

confidence: 99%

Thermal, mechanical and biodegradation properties of pure, epoxidized and methoxylated castor oil based polyurethane

Jeon

Kim

Park

2015

Plastics, Rubber and Composites

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A series of biodegradable polyurethane (BIOU) elastomers were obtained by chain extension of polyurethane (PU) prepolymer with the addition of castor oil (CAO), epoxidized CAO (ECAO) or methoxylated CAO (MCAO). The BIOU elastomers obtained were characterised by Fourier transform infrared, scanning electron microscopy, differential scanning calorimetry and tensile tester. The melting peak of BIOU became undetectable with an increase in the content of the chain extender regardless of its type. Some BIOU films, including BIOU-CAO16wt%, BIOU-ECAO16wt% and BIOU-MAO16wt%, showed elastomeric properties with higher tensile strength than pure PU. However the elongation at break and hardness of samples decreased with CAO, ECAO and MCAO content. The biodegradation was also measured by the modified Sturm test method of the BIOU films in a cultured medium with Pseudomonas aeruginosa E7 and Lysobacter soli LW1-1 strains at 37°C. As the increasing three types of chain-extenders the degree and rate of biodegradation of BIOU increased as compared with pure PU. But even then the biodegradability of BIOU by both the strains did not exceed 26% during the modified Sturm test for 31 days.

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“…The modified resins with OX segments exhibit excellent electrical insulation, improved mechanical properties, as well as flame retardant characteristics, currently as highly promising materials. [27][28][29] Rashmi Mohan Mathur et al 30 have prepared a series of oxazolidone incorporated linear epoxy resin through the reactions between bisphenol and isocyanate groups with different stoichiometric ratios, and emphatically explored their thermal stability and thermal decomposition properties.…”

Section: Introductionmentioning

confidence: 99%

Significantly improving mechanical properties of epoxy resin-based carbon fiber-reinforced plastic composites via introducing oxazolidinone segments

Liu

2022

Polymers and Polymer Composites

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Herein, the oxazolidinone (OX) segments have been successfully introduced into carbon fiber-reinforced plastic (CFRP) composites via the bulk polymerization of the isocyanate and epoxy (EP) groups to significantly promote the mechanical properties. Through the bulk polymerization, the OX segments in epoxy resin (OX epoxy resin) have been formed, verified via the Fourier transform infrared (FT-IR) spectroscopy. Afterward, in order to obtain the cured OX epoxies, the as-prepared OX epoxy resin has been mixed with the pure EP resin for further curing. Thermogravimetric analysis (TGA) and dynamic mechanical thermal analysis (DMTA) have shown that the cured OX epoxies have exhibited improved thermal resistance and higher Tg than the cured neat epoxies. After introducing OX segments, the flexural strength, flexural modulus, and impact strength of the cured OX epoxies have been promoted by 30.1%, 12.1%, and 82.9%, respectively. Moreover, the mechanical properties of CFRP composites, fabricated from OX epoxy resin and T1100 carbon fibers, have been improved as well and in particular, the flexural strength, flexural modulus, impact strength, interlaminar shear strength, and compressive strength after the impact of the composites have been improved by 25.9%, 8.4%, 23.6%, 35.5%, and 23.8%, respectively. Furthermore, the impact damage of the composite laminates has been analyzed via Ultrasonic C-scan.

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Thermal Characteristics of Oxazolidone Modified Epoxy Anhydride Blends

Cited by 4 publications

References 20 publications

Synthesis and characterization of maleated glycidyl 3‐pentadecenyl phenyl ether as a functionalized plasticizer for styrene–butadiene rubber/carbon black/silica composites

Synthesis and characterization of maleated glycidyl 3‐pentadecenyl phenyl ether as a functionalized plasticizer for styrene–butadiene rubber/carbon black/silica composites

Thermal, mechanical and biodegradation properties of pure, epoxidized and methoxylated castor oil based polyurethane

Significantly improving mechanical properties of epoxy resin-based carbon fiber-reinforced plastic composites via introducing oxazolidinone segments

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