Influence of carbon fibre on formation kinetics of crosslinked copolymer from bisphenol A dicyanate and epoxy oligomer

Semenovych, Halyna M.; Fainleib, Oleksandr M.; Slinchenko, Olena A.; Brovko, О.O.; Sergeeva, L. M.; Dubkova, V. I.

doi:10.1016/s1381-5148(98)00049-2

Cited by 17 publications

(8 citation statements)

References 4 publications

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“…Epoxy resins have attracted much research interest as adhesives, coatings, composites, and insulants due to their good thermal and mechanical properties, excellent electrical properties, and good processability . With the development of the electronic industry, the epoxy resin with good heat resistance and low dielectric constant will play a more and more important role.…”

Section: Introductionmentioning

confidence: 99%

Low k epoxy resin containing cycloaliphatic hydrocarbon with high crosslinking density

Kong

Cheng

Jin

et al. 2016

J of Applied Polymer Sci

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High performance epoxy resins have attracted much research interest in the last decades. Herein, two novel epoxy monomers containing cycloaliphatic hydrocarbon, 1,4-bis(4-(N,N-diglycidylamino)phenoxy)cyclohexane (CyhEP) and 1,3-bis(4-(N,N-diglycidylamino)phenoxy)adamantane (AdaEP) were synthesized and characterized. They were cured with 4-methylhexahydrophthalic anhydride (MHHPA) to prepare the highly crosslinked thermosets. Both epoxy resins show good thermal stability (T d5 > 300 8C), high glass transition temperature (> 200 8C), and high storage modulus (> 3.2 GPa) due to their highly crosslinked structure. The AdaEP/MHHPA resin shows a low dielectric constant (3.4 at 1 MHz) because of the introduction of bulky rigid adamantane into the polymer.

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Section: Introductionmentioning

confidence: 99%

Low k epoxy resin containing cycloaliphatic hydrocarbon with high crosslinking density

Kong

Cheng

Jin

et al. 2016

J of Applied Polymer Sci

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“…CE can be modified by a thermosetting epoxy resin (EP) because of the reaction between the triazine rings and epoxy groups, which forms oxazolidinone structures. In addition, the moisture resistance of CE is increased, whereas the thermal properties are not obviously sacrificed, when EP is introduced 10–13. Thus, blends of EP and CE have been intensively investigated among these modified CE systems.…”

Section: Introductionmentioning

confidence: 99%

Effect of the epoxy molecular weight on the properties of a cyanate ester/epoxy resin system

Liang

Ren

Zhang

et al. 2006

J of Applied Polymer Sci

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Bisphenol A dicyanate (BADCy) was modified by diglycidyl ether of bisphenol A epoxy resins with different molecular weights [E20 (weight-average molecular weight ϭ 1000) and E51 (weight-average molecular weight ϭ 400)] to investigate the effects of the epoxy molecular weight on the properties of the modified systems. The reactions were monitored with differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy, and the results showed that more pentacyclic oxazolidinone rings were formed in BADCy/E51 than in BADCy/E20 with the same epoxy resin weight content. DSC showed that BADCy/E20 had a lower curing temperature than BADCy/ E51 because of the higher concentration of hydroxyl groups (OOH) in E20. Thermal, moisture absorption, and mechanical testing showed that E51-modified BADCy performed better because of its lower molecular weight.

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“…[3, 5,13,[26][27][28][29]32,36] The simultaneous and sequential processes that occurred are polycyclotrimerization of CER into polycyanurate, interaction of cyanate groups of CER with epoxy groups of epoxy compounds with formation of oxazoline cycle, isomerization of oxazoline cycle into oxazolidinone cycle, interaction of cyanurate cycle formed with epoxy groups of epoxy compounds with formation of isocyanurate cycle, and interaction of isocyanurate cycle formed with epoxy groups of epoxy compounds with formation of oxazolidinone cycle. The main processes ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Thermostable cyanate ester resins and POSS-containing nanocomposites: influence of matrix chemical structure on their properties

Bershteĭn

Fainleib

Yakushev

et al. 2015

Polym. Adv. Technol.

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Thermostable densely crosslinked cyanate ester resins (CER) with different chemical structures, derived from monomer dicyanate esters of bisphenol E (DCBE), bisphenol A (DCBA), hexafluorobisphenol A (6F-DCBA) or from cyanated phenol-formaldehyde oligomer PT-30, and the nanocomposites based thereon, with 0.01 to 10 wt% epoxycyclohexyl-functionalized polyhedral oligomeric silsesquioxane (ECH-POSS), were synthesized and characterized by means of dynamic mechanical analysis, differential scanning calorimetry, far-infrared, and creep rate spectroscopy techniques. As shown, thermal and mechanical properties increased in a row of matrices prepared from DCBE < DCBA < 6F-DCBA < PT-30. Thus, these matrices with T g = 248, 275, 300, and~400°C (DMA, 1 Hz), respectively, had dynamic modulus E′ values of 1.8, 2.7-3.0, and 3.6 GPa at 20°C; high rigidity (dynamic modulus of about 1-2 GPa) retained at temperatures up to 200°C for DCBE matrix, 250°C for DCBA and 6F-DCBA matrices, but up to 380°C for PT-30-based matrix. The maximal effects from introducing ECH-POSS nanoparticles, covalently embedded into CER network, were attained mainly at their ultra-low contents (<<1 wt%); however, the ECH-POSS impact decreases in a row of matrices prepared from DCBE > DCBA > 6F-DCBA > PT-30. Copyright © 2015 John Wiley & Sons, Ltd.Keywords: cyanate ester resins; nanocomposites; synthesis; chemical structure; properties INTRODUCTIONCyanate ester resins (CER) are an important class of high performance materials. Polycyclotrimerization of cyanate esters leads to formation of high-temperature thermosetting polymers, polycyanurates (PCN), of a high crosslink density with triazine cycles in network junctions. [1][2][3][4][5][6] They have received much attention because of their unique combination of properties including stability at temperatures up to 350-420°C, high glass transition temperature (≥250°C), high fire, radiation, and chemical resistance, low water absorption and low outgassing, high adhesion to different substrates, and excellent dielectric properties (ε ≈ 2.6-3.1).[2-5] As a result, CER are widely used as the structural or functional materials in aeronautics, space (composite strakes, fins, nose radomes, and heat shields), printed circuit boards, and as encapsulants, adhesives, etc.[7] Several commercial CER of different chemical structures are known.[3] As a result of polycyclotrimerization reaction, CER monomer transforms into polycyanurate network (Fig. 1). In case of high purity of the monomer, the polymer network with a regular 3D structure is formed, and the only difference of the chemical structure of the materials obtained from different CER is fragment R between the cyanurate junctions in the networks (Fig. 1). An influence of R fragment in polycyanurates on structure-properties relationships, changes in FTIR spectra, glass transition temperatures, T g , thermal or thermal oxidative degradation, T d , adhesion, and some mechanical properties can be understood from some reviews and books, [2][3][4] where the data on polycyanura...

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Influence of carbon fibre on formation kinetics of crosslinked copolymer from bisphenol A dicyanate and epoxy oligomer

Cited by 17 publications

References 4 publications

Low k epoxy resin containing cycloaliphatic hydrocarbon with high crosslinking density

Low k epoxy resin containing cycloaliphatic hydrocarbon with high crosslinking density

Effect of the epoxy molecular weight on the properties of a cyanate ester/epoxy resin system

Thermostable cyanate ester resins and POSS-containing nanocomposites: influence of matrix chemical structure on their properties

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