Study of Thermal Properties of Curing of DGEBA Epoxy Resin with Hexakis-(&lt;i&gt;4-Aminophenoxy&lt;/i&gt;)-Cyclotriphosphazene

Zhu, Jing; Wu, Yong; Zhao, Liancheng; Hong, Wan-Pyo; Chu, Hui Juan; He, Juan

doi:10.4028/www.scientific.net/amr.284-286.365

Cited by 6 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the degradation process of DDS/E51 in air, two stages at 410°C and 554°C were observed, which had also been reported by others. 26 , 28 The second stage was mainly oxidation of the char layer formed in the decomposition process, leading to the residue of 3.3% at 800°C. The residual weight ratio of HPPA/E51 at 800°C was 50.5%, which was about 47.2% higher than that of DDS/E51.…”

Section: Heat Resistance Of Cured Resin Systemsmentioning

confidence: 99%

Curing behaviour and thermal properties of epoxy resin cured by aromatic diamine with carborane

Men

Cheng

Gong

et al. 2014

High Performance Polymers

View full text Add to dashboard Cite

A new kind of carborane-containing aromatic diamine, 1,2-bis (4-aminophenyl)-1,2-dicarba-closo-dodecaborane (HPPA), as a curing agent for epoxy resins was synthesized and confirmed by proton, carbon and boron nuclear magnetic resonance imaging, Fourier transform infrared spectroscopy and elemental analysis. The compatibility, thermal curing behaviour and thermal properties of HPPA/epoxy resin E51 system were investigated. HPPA exhibited good compatibility with E51. Compared with 4,4′-diaminodiphenylsulphone (DDS)/E51, HPPA/E51 system had higher reaction activity and lower curing temperature. When the ratio of amine protons versus epoxy groups was 1:1 in resin systems, the epoxy resin cured by HPPA exhibited the highest glass transition temperature of 207°C. The residual weight ratios of cured HPPA/E51 at 800°C under argon and in air atmospheres were 43.7% and 50.5%, respectively, which were 28.6% and 47.2% higher than that of DDS/E51, respectively, indicating that the HPPA/E51 system had good heat resistance.

show abstract

Section: Heat Resistance Of Cured Resin Systemsmentioning

confidence: 99%

Curing behaviour and thermal properties of epoxy resin cured by aromatic diamine with carborane

Men

Cheng

Gong

et al. 2014

High Performance Polymers

View full text Add to dashboard Cite

show abstract

“…Another fact that show the influence of the analysis parameters on the materials properties is that the heating rate of 5 °C.min -1 in nitrogen increase the T 5% temperature of the resins in the following order of HuEpC < HuEpA < HuEpAC, while at 40 °C.min -1 the increase is in the opposite direction. The thermal stabilities of the three humins/epoxy thermosets are improved compared to that of the furan/epoxy bio-resins stipulated in literature (T 5% = 141-221 °C, under air) Monti, Hoydonckx, Stappers, & Camino, 2015;Nouailhas et al, 2011), the resulting values being comparable with those of commercial epoxy resins (Chairat et al, 2015;Zhu et al, 2011). Vol.…”

Section: Thermal Stability Of Thermosetsmentioning

confidence: 60%

Sustainable Thermosets Obtained by Copolymerization of Humins with Triglycidyl Ether of Phloroglucinol

Dinu¹,

Mija²

2020

JMSR

View full text Add to dashboard Cite

The environmental pollution is growing continuously -causing a worldwide problem. Production and use of petroleum-based materials but also huge quantities of industrial wastes are important factors that affect the wellbeing of the environment. New scientific researches place great emphasis on waste valorization, and also on developing new environmentally friendly bio-based materials. In this work we focus on the valorization of humins, a biorefinery side product, by its copolymerization with a bio-based triepoxide. In this manner we produce materials with a very high bio-based carbon content (BCC) ≈ 94%. The physico-chemical and mechanical properties of the cured bio-based resins were investigated using different technics as TGA, DMA, Shore hardness test, water absorption and solvents resistance. It was revealed that the obtained materials present very good mechanical properties with values of E' in glassy region ≈ 3.7-5 GPa. The tan δ -maxima of the three huminsbased resins are ranging from 122 to 154 °C. The thermosets' hardness values ≈ 82-85 SD confirm the stiffness of these materials.

show abstract

“…The FTIR spectrum of HACP is shown in Figure (b), and absorption peaks are observed at 3445 cm −1 and 3349 cm −1 (NH 2 ), 3215 cm −1 and 3048 cm −1 (CH), 1620 cm −1 , 1500 cm −1 (benzene ring), 1183 cm −1 (PN), 1270 cm −1 (PN), and 953 cm −1 (POC), suggesting a successful synthesis of HACP. To confirm the purity of the HNCP and HACP, 31 P‐NMR measurements were performed, and the results are shown in Supporting Information Figure S1.…”

Section: Resultsmentioning

confidence: 97%

“…TEPA was provided by Tianjin Kexin Chemical Industry Co. (Tianjin, China). Hexakis‐(4‐nitrophenoxy)‐cyclotriphosphazene (HNCP) and HACP were prepared in the laboratory according to the literature …”

Section: Methodsmentioning

confidence: 99%

Synthesis of a novel, multifunctional inorganic curing agent and its effect on the flame‐retardant and mechanical properties of intrinsically flame retardant epoxy resin

Guo

Wang

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Traditional curing agents have only a single property, while traditional synthetic organic flame-retardant hardeners often show poor tolerance to oxidants, strongly acidic or alkaline reagents, and organic solvents and have toxicity problems. Here, a novel and multifunctional flame-retardant curing agent of the inorganic substrate multifunctional curing agent of the inorganic substrate (FCIN) was proposed first and successfully prepared, and then an intrinsically flame-retardant epoxy resin (EP) was prepared by covalently incorporating FCIN nanoparticles (FCINs) into the EP. The curing behavior of the FCINs was investigated, showing that FCIN/EP expresses a higher global activation energy than tetraethylenepentamine (TEPA)/EP and that the FCINs had strong interfacial adhesion to the EP matrix. Additionally, the FCINs were well dispersed and provided a remarkable improvement in mechanical and flame-retardant properties of the intrinsically flame-retardant EP. With the incorporation of 9 wt % FCINs into the EP, dramatic enhancements in the strength, modulus under bending, and toughness (36%, 109%, and 586%, respectively) were observed, along with 85.2%, 46.4%, 98.3%, and 77.26% decreases in the peak heat release rate, total heat release, smoke production rate peak, and total smoke production, respectively, with respect to that of TEPA/EP. The mechanisms of its flame-retardant, smoke-suppression, and failure behaviors were investigated. The development of this unconventional, multifunctional flame-retardant curing agent based on an inorganic substrate showed promise for enabling the preparation of a variety of new high-performance materials (such as intrinsically flame-retardant EP and functional modified polyesters). INTRODUCTIONEpoxy resin (EP), one of the most important thermosetting polymers, has been extensively applied in the fields of composite matrixes, surface coatings, semiconductor packaging, printed circuit boards, adhesives, various electrical devices, and so on, owing to its high heat, solvent, moisture, and chemical resistance and its low shrinkage, strong adhesion to many substrates, and outstanding mechanical stiffness. 1-5 Nevertheless, improving the flame-retardant properties of epoxy polymers still represents a challenge that greatly restricts their applications because they have inherently poor flame-retardant properties and high flammability. Therefore, improving the fire resistance of the EP and its composites is significant and imperative.Although halogen-containing chemicals are the most effective method for improving the flame-retardant properties of EP, they usually release toxic gases and corrosive smoke during combustion, which are detrimental to the environment and human health. 6-9 Therefore, it is very desirable to develop alternative flame retardants for EP. One effective approach for improving the flame-retardant behavior of EP without halogenated compounds adds phosphorus-and nitrogen-containing elements to the substrate or incorporates them into the structure of the materials. [10...

show abstract

Study of Thermal Properties of Curing of DGEBA Epoxy Resin with Hexakis-(<i>4-Aminophenoxy</i>)-Cyclotriphosphazene

Cited by 6 publications

References 10 publications

Curing behaviour and thermal properties of epoxy resin cured by aromatic diamine with carborane

Curing behaviour and thermal properties of epoxy resin cured by aromatic diamine with carborane

Sustainable Thermosets Obtained by Copolymerization of Humins with Triglycidyl Ether of Phloroglucinol

Synthesis of a novel, multifunctional inorganic curing agent and its effect on the flame‐retardant and mechanical properties of intrinsically flame retardant epoxy resin

Contact Info

Product

Resources

About