Tough epoxy/cyanate ester resins with improved thermal stability, lower dielectric constant and loss based on unique hyperbranched polysiloxane liquid crystalline

Liu, Zhen; Yuan, Li; Liang, Guozheng; Gu, Aijuan

doi:10.1002/pat.3590

Cited by 34 publications

(13 citation statements)

References 59 publications

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“…1 –4 This technology requires dielectric materials with low dielectric constant and dielectric loss because of the inverse relationship between the square root of the dielectric constant and the propagation delay of electronic signals. 5 In general, high-performance dielectric materials, such as cyanate ester (CE), 6 –10 bismaleimide–triazine (BT) resin, 11 –15 polytetrafluoroethylene resin, 16 and bismaleimide (BMI), 17,18 have been increasingly used in the field. Among these dielectric materials, BT resins display superior performance.…”

Section: Introductionmentioning

confidence: 99%

Thermally stabilized bismaleimide–triazine resin composites for 10-GHz level high-frequency application

Yang

Mao

et al. 2017

High Performance Polymers

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A hybrid cured resin with excellent dielectric and thermal properties was prepared with bismaleimide–triazine (BT) resin modified with 2,2′-diallylbisphenol A (DBA). The thermal and dielectric properties of the resin were investigated, and the effect of DBA concentration on the curing reaction was determined. Results indicated that DBA significantly influenced the curing reaction and the properties of the cured product. The modified BT resins exhibited outstanding thermal stability (initial decomposition temperature was over 400°C), although the stability was slightly lower than that of pure BT resins. The dielectric constant and dielectric loss of the cured resin decreased when DBA was introduced into the BT resins. Moreover, the fabricated resins showed dielectric constant of 2.91–3.07 and dielectric loss lower than 0.0057 under the testing high-frequency range of 1 GHz to 15 GHz. Overall, the BT resins modified by DBA display great potential to be applied in high frequency field.

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Section: Introductionmentioning

confidence: 99%

Thermally stabilized bismaleimide–triazine resin composites for 10-GHz level high-frequency application

Yang

Mao

et al. 2017

High Performance Polymers

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“…Most methods of toughening polycyanate ester entail adding inorganic materials (aligned carbon nanotube bundles [ACNTB], [12] polyhedral oligosilsesquioxane [POSS)], [3,13,14] and graphene oxide [15] ) or polymers, [2,10,16,17] to the cyanate resin. Blending with inorganic materials can diminish the mechanical properties of the polycyanate ester [11][12][13] because of dispersion problems due to the presence of inorganic material in the resin matrix.…”

Section: Introductionmentioning

confidence: 99%

Improving the toughness of polycyanate ester by adding epoxy pre‐polymer with different molecular weights

Huang

et al. 2020

J of Applied Polymer Sci

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The toughness of polycyanate ester is improved by adding epoxy pre‐polymer with varying molecular weights. The curing mechanism of epoxy prepolymer (PreEP) and cyanate ester (CE) is discussed based on differential scanning calorimeters and Fourier‐transform infrared spectroscopy. The mechanical, phase separated structures and thermal properties of PreEP/CE are also evaluated. It is found that the molecular weight of PreEP can reach 1,800 when it is cured at 90°C for 45 min by using a set amount of polyetheramine. Meanwhile, by increasing the molecular weight of the prepolymer, the mechanical properties of PreEP/CE show increased first, and then decreased. 0.2 PreEP/CE has the highest bending strength and impact strength (105.8 MPa and 18.3 kJ·m−2). There are 26.7 and 114.5% higher than those of polycyanate ester, respectively. The tougher PreEP/CE is attributable to the phase‐separated structures and the decrease in the cross‐linked product (Oxazolidinone) in PreEP and CE. The method showed in this article provides a new way to improve the toughness properties of thermoset resin.

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“…However, the brittleness of the neat epoxy network has extremely limited their application. Therefore, many attempts have been made in previous work [9][10][11][12][13] to improve the brittleness of the epoxy network. The toughening strategies mainly concentrated on the incorporation of filler particles, such as rubber, core-shell, hyperbranched polymer, thermoplastic.…”

Section: Introductionmentioning

confidence: 99%

Performances of epoxy-based composites with multi-wall carbon nanotubes and acrylic tri-block copolymer

Liu

et al. 2019

Nanocomposites

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2019) Performances of epoxy-based composites with multiwall carbon nanotubes and acrylic tri-block copolymer, Nanocomposites, 5:1, 28-35, ABSTRACTIn order to overcome the weakness of the epoxy-amine network, the acrylic tri-block copolymer (BMG) and the functionalized multi-wall carbon nanotubes (MWCNTs) were prepared in this article. The curing reaction, rheology, thermal and mechanical performance of epoxybased composites with BMG and MWCNTs were respectively investigated in this study. The curing schedule of the epoxy-based composites was ascertained by using non-isothermal DSC analysis. The rheological analysis showed that the processing time of composites was over 60 min under the processing temperature window from 75 to 200 C. The mechanical performance of the epoxy-amine network was improved after introducing the dispersed MWCNTs and BMG. In comparison with the neat epoxy-amine network, the tensile strength and impact strength of the composites with the addition of 7.1 wt.% BMG and 0.4 wt.% MWCNTs increased by 11.25 and 36.4%, respectively. GRAPHICAL ABSTRACT ARTICLE HISTORY

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Tough epoxy/cyanate ester resins with improved thermal stability, lower dielectric constant and loss based on unique hyperbranched polysiloxane liquid crystalline

Cited by 34 publications

References 59 publications

Thermally stabilized bismaleimide–triazine resin composites for 10-GHz level high-frequency application

Thermally stabilized bismaleimide–triazine resin composites for 10-GHz level high-frequency application

Improving the toughness of polycyanate ester by adding epoxy pre‐polymer with different molecular weights

Performances of epoxy-based composites with multi-wall carbon nanotubes and acrylic tri-block copolymer

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