Cure kinetics and thermal stability of multifunctional epoxy/anhydride containing release agent and carbon fiber

Zhou, Zhengwei; Li, Aijun; Bai, Ruixiang; Sun, Jianfei

doi:10.1002/pc.22700

Cited by 4 publications

(6 citation statements)

References 20 publications

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“…The analysis of curing kinetic for imide systems was performed with Kissinger and Crane methods. [25][26][27][28][29][30] According to Kissinger equation (eqn (1)), the activation energy E can be obtained from the slope of the plots of ln(b/T p 2 )…”

Section: Non-isothermal Cure Kinetics Of Imide Systemsmentioning

confidence: 99%

Thermal curing of novel carborane-containing phenylethynyl terminated imide oligomers

Yue

et al. 2015

RSC Adv.

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Section: Non-isothermal Cure Kinetics Of Imide Systemsmentioning

confidence: 99%

Thermal curing of novel carborane-containing phenylethynyl terminated imide oligomers

Yue

et al. 2015

RSC Adv.

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“…Afterward, the Málek approach was used to find the appropriate f (α) with the data obtained from the nonisothermal DSC measurement . Two precise functions, y (α) and z (α), were constructed; these were approximated by the following equations:

y (|, α) = (|, \frac{d α}{d t}) normalexp (|, χ)

z (|, α) = (|, \frac{d α}{d t}) \frac{T}{β} normalπ (|, χ)

where χ is the reduced activation energy ( E a / RT ) and π(χ) is the fourth‐order rational expression of the temperature integral, as follows:

π (|, χ) = \frac{χ^{3} + 18 χ^{2} + 88 χ + 96}{χ^{4} + {20 χ}^{3} + 120 χ^{2} + 240 χ + 120}

y (α) and z (α) were normalized and plotted as a function of the conversion, as shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…Afterward, the M alek approach was used to find the appropriate f(a) with the data obtained from the nonisothermal DSC measurement. 43,51,52 Two precise functions, y(a) and z(a), were constructed; these were approximated by the following equations:…”

Section: Surface Chemistry Of the Functionalized Mwcntsmentioning

confidence: 99%

Influence of diaminobenzoyl‐functionalized multiwalled carbon nanotubes on the nonisothermal curing kinetics, dynamic mechanical properties, and thermal conductivity of epoxy–anhydride composites

Pongsa

Samthong

Praserthdam

et al. 2016

J of Applied Polymer Sci

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To obtain advanced materials with a high thermal dissipation, the addition of multiwalled carbon nanotubes containing diverse functionality groups, that is, as‐received multiwalled carbon nanotubes (AS‐MWCNTs) and diaminobenzoyl multiwalled carbon nanotubes (DA‐MWCNTs), to epoxy–anhydride composites was accomplished. According to nonisothermal differential scanning calorimetry analysis, the reactive functional groups present on the surfaces of the AS‐MWCNTs and DA‐MWCNTs accelerated the nucleophilic addition reaction of epoxy composites. Because of the difference in the reactivities of these functional groups toward epoxy groups, the distinction of fractional conversion and the reaction rate of the curing process were remarkably evident at the early stage. A suitable kinetic model was effectively elucidated with the Málek approach. The curing kinetics could best be described by a two‐parameter autocatalytic model as a truncated Šesták–Berggren model. The DA‐MWCNTs achieved effective load transfer and active heat conductive pathways; this resulted in good dynamic mechanical and thermal properties. As a result, the diglycidyl ether of bisphenol A/DA‐MWCNTs constituted an effective system with enhanced heat dissipation of materials for electronic applications. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43567.

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“…Our previous studies have shown that the aminated PPTA can significantly strengthen and toughen triglycidyl‐ p ‐aminophenol (TGPAP) epoxy resin and its carbon fiber composite, and having little effect on the T g of EP 29,30 . Nowadays, in the fields of mechanical, electrical, electronics, aerospace, chemical, transportation, and construction, tetraglycidyl diamino diphenyl methane (TGDDM) epoxy resin and its carbon fiber composite are widely used because of their heat resistance and high performance 31–33 . Therefore, it is crucial to explore and investigate the reinforcing agent for TGDDM that can efficiently improve the mechanical properties and maintain the heat resistance, which has barely been reported.…”

Section: Introductionmentioning

confidence: 99%

Fully aminated rigid‐rod aromatic polyamide efficiently reinforces tetraglycidyl diamino diphenyl methane epoxy resin and its carbon fiber composite

Wang,

Peng,

Wang

et al. 2024

Polymer Composites

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Tetraglycidyl diamino diphenyl methane (TGDDM) and its carbon fiber composite are widely studied and used because of their heat resistance and high performance. In order to obtain efficient reinforcing effects in a simple manner, we adopt the idea of molecular composite—uniformly dispersing the rigid‐rod macromolecules in the TGDDM matrix. Herein, we prepared fully aminated‐poly(p‐phenylene terephthalamide) by direct polycondensation and hydrogenation reduction as the reinforcing agent. The fully aminated‐PPTA is distributed uniformly in the cross‐linked epoxy resin (EP) network by chemical bonds, and achieves efficient reinforcement. With the addition of only 0.5 wt% fully aminated‐PPTA, the tensile strength and Young's modulus of EP are improved to 127.7 ± 7.4 MPa (+28%) and 3.36 ± 0.15 GPa (+44%); the flexural strength and modulus are improved to 209.6 ± 9.4 MPa (+42%) and 3.70 ± 0.14 GPa (+37%); the notch impact strength is improved by 32%. Crucially, the heat resistance of EP almost remains unchanged. Furthermore, the flexural properties and interlaminar shear strength of the carbon fiber composite are also comprehensively increased. Compared with other modified fillers, the fully aminated‐PPTA is simple to prepare and blend, and is an efficient reinforcing agent for TGDDM and its carbon fiber composite benefitting from its rigid‐rod main chain and amino side groups.Highlights Molecular composite can achieve excellent strengthen and toughen effects. Fully aminated‐PPTA is embedded uniformly in EP network by chemical bonds. TGDDM is effectively reinforced without deteriorated heat resistance. Fully aminated‐PPTA is also a comprehensive reinforcement for EP/CF composite.

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Cure kinetics and thermal stability of multifunctional epoxy/anhydride containing release agent and carbon fiber

Cited by 4 publications

References 20 publications

Thermal curing of novel carborane-containing phenylethynyl terminated imide oligomers

Thermal curing of novel carborane-containing phenylethynyl terminated imide oligomers

Influence of diaminobenzoyl‐functionalized multiwalled carbon nanotubes on the nonisothermal curing kinetics, dynamic mechanical properties, and thermal conductivity of epoxy–anhydride composites

Fully aminated rigid‐rod aromatic polyamide efficiently reinforces tetraglycidyl diamino diphenyl methane epoxy resin and its carbon fiber composite

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