Studies on thermal, mechanical and morphological behaviour of caprolactam blocked methylenediphenyl diisocyanate toughened bismaleimide modified epoxy matrices

Premkumar, S.; Chozhan, C. Karikal; Alagar, M.

doi:10.1016/j.eurpolymj.2008.05.031

Cited by 46 publications

(31 citation statements)

References 28 publications

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“…A similar procedure has been adopted for biocide free coatings. [12,14] Biocide loaded nano-zeolite containing epoxy resin was mixed with a calculated quantity of 5% flow control agent (urea formaldehyde) at 30°C for 15 min with constant stirring. After complete dissolution, a stoichiometric amount of the curing agent Aradur 140 (polyamidoimidazoline) was added and stirring was continued at 30°C to get a homogenous mixture.…”

Section: Reaction Of Biocide Loaded Zeolite With Aminopropyltriethoxymentioning

confidence: 99%

“…Even though numerous paints and coating systems based on epoxy resins are available for fouling and corrosion protection, they are not satisfactory in field applications, where high fouling and corrosion resistance are required [9][10][11][12][13][14]. The designed biocide loaded epoxy coating composition paints of the present study may be unique for the marine substrate in preventing corrosion and fouling together and the results are discussed herein.…”

Section: Introductionmentioning

confidence: 98%

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Studies on Biocide Free and Biocide Loaded Zeolite Hybrid Polymer Coatings on Zinc Phosphated Mild Steel for the Protection of Ships Hulls from Biofouling and Corrosion

Boopalan

Arumugam

2011

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Biocide free and biocide loaded Zeolite epoxy coatings were formulated and covalently linked to diglycidyl ether bisphenol-A type epoxy resin which acts as a base material. These formulations were applied over the zinc phosphated mild steel specimens by a brushing method to give a thickness of 200±10 μm. The effect of biocide on the corrosion and fouling resistance properties were evaluated by Thermo Gravimetric Analysis (TGA), polarization, electrochemical impedance and antifouling testing. The experimental evidence reveals that the linkage of biocide loaded Nano Zeolite has tremendous potential in resisting corrosion and fouling which is ideally required for marine environments and quite superior to the biocide free Zeolite coating. The purity and the structure of these coatings were examined by an FTIR spectral study.

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Section: Reaction Of Biocide Loaded Zeolite With Aminopropyltriethoxymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Studies on Biocide Free and Biocide Loaded Zeolite Hybrid Polymer Coatings on Zinc Phosphated Mild Steel for the Protection of Ships Hulls from Biofouling and Corrosion

Boopalan

Arumugam

2011

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“…CMDI was prepared according to the reported procedure [28]. The white solid mass obtained (Yield: 92%) was purified, dried, and preserved for further use (Scheme 1 (Figs.…”

Section: Synthesis Of Caprolactam-blocked Methylenediphenyl Diisocyanmentioning

confidence: 99%

Organoclay‐filled caprolactam‐blocked methylenediphenyl diisocyanate‐toughened epoxy interpenetrating network matrices

Premkumar

Chozhan

Alagar

2009

Polymer Engineering & Sci

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An interpenetrating networks of varying weight percentages (5, 10, and 15%) of caprolactam-blocked methylenediphenyl diisocyanate(CMDI)-toughened epoxy matrices were developed and characterized. The toughened epoxy system was further modified with 1, 3, and 5% (by wt) of organophilic montmorillonite (MMT) clay. Organoclay-filled hybrid CMDI-epoxy matrices, developed in the form of castings, were characterized for their thermomechanical properties. The data obtained from differential scanning calorimetry and dynamic mechanical analysis showed that there was a significant loss in the values of glass transition temperatures (T g ) of organoclay-filled hybrid epoxy systems when compared with that of neat epoxy resin, whereas increasing trend in thermal stability was observed. The values obtained from mechanical studies indicated that the CMDI-toughened epoxy and organoclay-filled CMDI-epoxy systems were improved the mechanical properties according to its percentage concentration. From X-ray diffraction analysis, it was observed that the presence of d 001 reflections of the organophilic MMT clay in the CMDI-toughened epoxy systems indicated the development of intercalated clay structure which in turn confirmed the formation of intercalated nanocomposites. Homogeneous surface morphologies of CMDI-toughened epoxy and organoclay-filled CMDItoughened epoxy systems were ascertained from scanning electron microscope. POLYM. ENG. SCI., 49:747-755, 2009. ª

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“…[12] Hybrid material possesses high rigidity and stability, which make the products stronger than that of photopolymers, thermoplastics, and thermosetting polymers. [16] Phosphorus-functionalized polymers possess an improved organo solubility, adhesion to metals and atomic oxygen resistance. [13,14] However, too much brittleness of such combinations apprehends their utility in high-performance engineering applications.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of amide group (-NH-CO-) from caprolactam introduces a flexible moiety in to the epoxy polymer chain and makes the polymer become suitable for highperformance applications. [16] Phosphorus-functionalized polymers possess an improved organo solubility, adhesion to metals and atomic oxygen resistance. [17] DOPO is the best halogen-free flame retardant material along with high efficiency, lasting effect and low toxicity.…”

Section: Introductionmentioning

confidence: 99%

Development and characterisation of functionalised AL‐MCM‐41 reinforced caprolactam toughened DGEBA epoxy‐cyanate ester polymer nanocomposites

Jayasree

Alagar

2017

Adv Polym Technol

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The present work aims at the toughening of DGEBA epoxy-cyanate ester hybrid with caprolactam and its subsequent reinforcement with different weight percentages of (1, 3, 5, and 7 wt%) 3-glycidylpropoxytrimethoxysilane functionalized Al-MCM-41 (F-Al-MCM-41) to fabricate F-Al-MCM-41 reinforced caprolactam toughened DGEBA epoxy-cyanate ester polymer nanocomposites. 1 H NMR and 13 C NMR data confirmed the formation of epoxy cyanate ester. Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) results ascertained the curing behaviour of polymer composites. Data from thermal and dielectric studies reveal that 7 wt% F-Al-MCM-41 reinforced caprolactam toughened DGEBA epoxycyanate ester exhibits superior thermal stability and dielectric constant than that of a neat composite. The SEM-EDAX analysis investigated the surface morphology of polymer composites. Data obtained from DMA showed that 7 wt% polymer nanocomposite possesses the highest storage modulus among the samples. K E Y W O R D S cyanate ester, epoxy, functionalized Al-MCM-41, polymer composites | 1907 JAYASREE Et Al.

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Studies on thermal, mechanical and morphological behaviour of caprolactam blocked methylenediphenyl diisocyanate toughened bismaleimide modified epoxy matrices

Cited by 46 publications

References 28 publications

Studies on Biocide Free and Biocide Loaded Zeolite Hybrid Polymer Coatings on Zinc Phosphated Mild Steel for the Protection of Ships Hulls from Biofouling and Corrosion

Studies on Biocide Free and Biocide Loaded Zeolite Hybrid Polymer Coatings on Zinc Phosphated Mild Steel for the Protection of Ships Hulls from Biofouling and Corrosion

Organoclay‐filled caprolactam‐blocked methylenediphenyl diisocyanate‐toughened epoxy interpenetrating network matrices

Development and characterisation of functionalised AL‐MCM‐41 reinforced caprolactam toughened DGEBA epoxy‐cyanate ester polymer nanocomposites

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