Low dielectric permittivity and high thermal stability composites based on crosslinkable poly (arylene ether nitrile) and hollow glass microsphere

Zou, Yanke; Zhan, Yinqing; Zhao, Rui; Liu, Xiaobo

doi:10.1007/s10854-012-0913-4

Cited by 21 publications

(11 citation statements)

References 18 publications

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“…Here, the dielectric properties of PPEBF‐Ph/QF and PB41/QF laminates were investigated in a waveguide cavity, and the results are presented in Figure . The laminates exhibited a dielectric constant of 2.94–3.27 and tan δ of 0.002–0.019 in an electromagnetic field at frequency ranging from 8 GHz to 18 GHz, values similar to that of many organic wave‐transparent materials that have been reported . The low polarizability of the CF/CH bonds and the absence of strong dipoles led to an obvious decrease of dielectric constant .…”

Section: Resultssupporting

confidence: 67%

Low‐viscosity and soluble phthalonitrile resin with improved thermostability for organic wave‐transparent composites

Han

et al. 2017

J of Applied Polymer Sci

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High processing viscosity and poor solubility limit the application of heterocyclic polymers for fabricating organic wavetransparent composites for aerospace applications. In this paper, a novel resin, poly(phthalazinone ether bisphenol fluorene) encapped with phthalonitrile (PPEBF-Ph), was synthesized and used as the matrix. Biphenol-based phthalonitrile monomer BP-Ph was also synthesized and blended with PPEBF-Ph to further lower the processing viscosity. Solubility tests showed that the resin was soluble in dimethylformamide, N,N-dimethyl acetamide, N-methylpyrrolidone, dimethyl sulfoxide, chloroform, and other solvents. Differential scanning calorimetry and rheological studies revealed that the mixed resins exhibited low processing viscosity and a wide processing window below the gel temperature. Thermogravimetric analysis indicated that the cured resins were stable below 510-530 8C under nitrogen atmosphere after 6 h of curing (decreased by 40-60% compared with previous reports on phthalonitrile resin). In air, the char yields of the resins reached 20-30% when heated at 800 8C. The composites were reinforced by a quartz fiber cloth and exhibited a dielectric constant of 2.94-3.27 in an electromagnetic field with frequency ranging from 8 to 18 GHz. Retention of the bending modulus exceeded 70% at 400 8C according to dynamic mechanical analysis, indicating excellent mechanical stability was obtained.

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Section: Resultssupporting

confidence: 67%

Low‐viscosity and soluble phthalonitrile resin with improved thermostability for organic wave‐transparent composites

Han

et al. 2017

J of Applied Polymer Sci

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“…To compensate for the negative effects, a class of phthalonitrile terminated polyaryl ether nitrile has been attracting more attention recently. A series of novel phthalonitrile terminated polyaryl ether nitrile were reported . The lateral cyanide structure was considered as potential cross‐linkable groups to improve the thermal and mechanical performance of the resin.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of phthalonitrile terminated polyaryl ether nitrile containing fluorene group

Wang

Guo

et al. 2018

J of Applied Polymer Sci

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A series of phthalonitrile terminated polyaryl ether nitrile oligomers containing fluorene group (BPPENs) were synthesized and cured in the presence of bis[4‐(4‐aminophenoxy)phenyl]sulfone. Additionally, the quartz fiber reinforced composites were prepared by hot‐pressing process. The structure of oligomers was characterized by 1H‐NMR and GPC. The curing behavior of BPPENs was studied by DSC, IR, and rheological tests in detail. Thermal stability and mechanical properties were also investigated. The results showed that the oligomers showed excellent solubility. BPPENs could be dissolved in common solvents at ambient temperature. TGA and DMA results showed that the cured polymer and composites possessed excellent thermal properties with high residual weight of 72.4% at 1000 °C and 5% thermal degradation temperature (T5%) of 548 °C under inert atmosphere. The bending strength of quartz fiber reinforced composites was about 500 MPa, exhibiting good mechanical property. The products could be used as high performance polymers or a modifier for heat‐resistant resins. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46606.

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“…Through the above steps, the SiO 2 /PEN‐ t ‐Ph composites with different mass fraction of nano‐SiO 2 (0.0, 4.0, 8.0, 12.0, 16.0, and 20.0 wt%) were obtained. Scheme shows the schematic linking formation of the SiO 2 /PEN‐ t ‐Ph nanocomposites, which is similar to that of the crosslinkable poly(arylene ether nitrile)/hollow glass microsphere (PEN/HGM) composites .…”

Section: Methodsmentioning

confidence: 89%

Effect of nanosilica on the thermal, mechanical, and dielectric properties of polyarylene ether nitriles terminated with phthalonitrile

Tong

Chen

et al. 2013

Polym. Compos

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Nanosilica/polyarylene ether nitriles terminated with phthalonitrile (SiO2/PEN‐t‐Ph) composites were prepared by hot‐press approach. To ensure the nano‐SiO2 can disperse uniformly, the solution casting method combined with ultrasonic dispersion technology had been taken previously. The mass fraction of nano‐SiO2 particles was varied to investigate their effect on the thermal, mechanical, and dielectric properties of the nanocomposites. From scanning electron microscope images, it was found that the nanoSiO2 particles were dispersed uniformly in the PEN‐t‐Ph matrix when the addition of nano‐SiO2 was less than 16.0 wt%. However, when the mass fraction of nano‐SiO2 increased to 20.0 wt%, the nano‐SiO2 particles tend to self‐aggregate and form microns sized particles. Thermal studies revealed that nano‐SiO2 particles did not weaken the thermal stabilities of the PEN‐t‐Ph matrix. Mechanical investigation manifested that the SiO2/PEN‐t‐Ph nanocomposites with 12.0 wt% nano‐SiO2 loading showed the best mechanical performance with tensile strength of 108.2 MPa and tensile modulus of 2107.5 Mpa, increasing by 14% and 19%, respectively as compared with the pure PEN‐t‐Ph film. Dielectric measurement showed that the dielectric constant increased from 3.70 to 4.15 when the nano‐SiO2 particles varied from 0.0 to 20.0 wt% at 1 kHz. Therefore, such composite was a good candidate for high performance materials at elevated temperature environment. POLYM. COMPOS., 35:344–350, 2014. © 2013 Society of Plastics Engineers

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Low dielectric permittivity and high thermal stability composites based on crosslinkable poly (arylene ether nitrile) and hollow glass microsphere

Cited by 21 publications

References 18 publications

Low‐viscosity and soluble phthalonitrile resin with improved thermostability for organic wave‐transparent composites

Low‐viscosity and soluble phthalonitrile resin with improved thermostability for organic wave‐transparent composites

Synthesis and properties of phthalonitrile terminated polyaryl ether nitrile containing fluorene group

Effect of nanosilica on the thermal, mechanical, and dielectric properties of polyarylene ether nitriles terminated with phthalonitrile

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