Synthesis and characterization of a novel heat resistant epoxy resin based on N,N′-bis(5-hydroxy-1-naphthyl)pyromellitic diimide

Ren, Hua; Sun, Jianzhong; Zhao, Qian; Zhou, Quan; Ling, Qincai

doi:10.1016/j.polymer.2008.09.047

Cited by 55 publications

(21 citation statements)

References 25 publications

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“…Zhang et al have modified bisphenol type epoxy resin by p ‐aminobenzoic acid, which led to the formation of a product with both hydrophilic and lipophilic properties. As much as we know, much interesting work was focused on the main chains of functionalized epoxy resins . However, there are few studies on modifying multifunctional epoxy resin with grafting pendent groups to develop promising epoxy resins.…”

Section: Introductionmentioning

confidence: 99%

Multifunctionalization of novolac epoxy resin and its influence on dielectric, thermal properties, viscoelastic, and aging behavior

Zhao

Zhang

Sun

et al. 2013

J of Applied Polymer Sci

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In this article, novolac epoxy was functionalized using p-hydroxybenzoic acid as pendent groups, which offered weak acidic environment and were cured with methyl etherified amino resin (HMMM). Its chemical structure was characterized by Fourier transform infrared (FT-IR), 1 H nuclear magnetic resonance ( 1 H NMR) and differential scanning calorimeter (DSC). To comprehensively investigate its performance, HMMM was used as a curing agent. The modified epoxy exhibited higher storage modulus, lower thermal expansion coefficient, better moisture resistance, better resistance to degradation and lower dielectric constant. Furthermore, the aging behavior was investigated using dynamic mechanical analysis and scanning electron microscopy, which showed that the activation energy of glass transition increased after aging and cured MDEN was more difficult to age. Moreover, the relation between storage modulus and curing rate was established; the low curing rate of MDEN decreased the growth rate of storage modulus and reduced the internal stress, which was beneficial for processing.

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Section: Introductionmentioning

confidence: 99%

Multifunctionalization of novolac epoxy resin and its influence on dielectric, thermal properties, viscoelastic, and aging behavior

Zhao

Zhang

Sun

et al. 2013

J of Applied Polymer Sci

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“…The structure of ER is critical for its properties. 11 –14 Changing the molecular structure of ER is an effective way to improve the thermal resistance of ER. This can be achieved by inserting a heat-resistant rigid group and by increasing the cross-linking density of the resin.…”

Section: Introductionmentioning

confidence: 99%

Properties of high-temperature epoxy/DDS resin systems for bonding application

Zhou

Fan

Liu

et al. 2019

High Performance Polymers

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The choice of basic epoxy resin (ER) is especially important for the design of epoxy adhesive formulations. In the present study, performance of several high-temperature ER systems, prepared using 4,4-diaminodiphenylsulfone as the curing agent by the same curing process, was investigated. The curing behavior was studied by dynamic rheometry and differential scanning calorimetry. The thermal properties of the cured resins were investigated by dynamic thermomechanical analysis, thermomechanical analysis, and thermogravimetric analysis. The peeling properties, mechanical behaviors, and moisture absorptivities of the cured resins were also studied. The results showed traditional diglycidyl ether of bisphenol A epoxy to be insufficient in heat resistance. Naphthalene-based ER and bifunctional cardo ER showed higher glass transition temperature values. However, the processability and adhesive properties may not comply with the application requirements. Biphenyl novolac ER has excellent performance in all aspects, which is suitable for use as a high-temperature adhesive.

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“…Conventionally, two main approaches have been taken to increase the stiffness of epoxy resins, i.e., introducing rigid moieties into the epoxy skeleton [11–16] and increasing the crosslinking density [17]. Both methods could significantly enhance the modulus of epoxy resins, however, usually with a sacrifice in fracture toughness [18–20].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization of an epoxy‐terminated carbosiloxane and its application as a modifier in epoxy systems

Kang¹,

Du²,

Li³

et al. 2011

Polymer Engineering & Sci

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An epoxy‐terminated carbosiloxane has been designed and synthesized as a modifier to improve toughness and stiffness of epoxy resins simultaneously. The modifier was rubbery in nature and possessed several epoxy groups. When co‐cured with a conventional epoxy precursor, diglycidyl ether of bisphenol‐A (DGEBA), it would phase separate as individual domains and thus act as a toughener. Through participating in curing reaction with its multiple epoxy groups, the crosslinking density of the system was increased and thus resulted in reinforcing of cured epoxy system. The modifier was synthesized via hydrosilylation and cohydrolysis reactions. The chemical structures of the carbosiloxane were confirmed by FTIR and 1H NMR spectra. The cured epoxy products were characterized by dynamic mechanical thermal analysis (DMTA), thermogravimetric analysis (TGA), impact strength testing, and atomic force microscopy (AFM). POLYM. ENG. SCI., 2011. ©2011 Society of Plastics Engineers

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Synthesis and characterization of a novel heat resistant epoxy resin based on N,N′-bis(5-hydroxy-1-naphthyl)pyromellitic diimide

Cited by 55 publications

References 25 publications

Multifunctionalization of novolac epoxy resin and its influence on dielectric, thermal properties, viscoelastic, and aging behavior

Multifunctionalization of novolac epoxy resin and its influence on dielectric, thermal properties, viscoelastic, and aging behavior

Properties of high-temperature epoxy/DDS resin systems for bonding application

Synthesis, characterization of an epoxy‐terminated carbosiloxane and its application as a modifier in epoxy systems

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