Study of phthalonitrile resin modified by Si–B–C–N precursors with dynamic heat-resistant phase

Wang, Zi-long; Zheng, Kun; Guo, Ying; Ye, Li; Han, Wei-jian; Wang, Jun; Liu, Wen-bin; Zhou, Heng; Zhao, Tong

doi:10.1007/s10973-023-12563-w

Cited by 3 publications

(2 citation statements)

References 47 publications

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“…As a high-performance thermosetting polymer, phthalonitrile resin has potential applications in aerospace, photoelectric, electronic packaging, and other high-tech fields [1][2][3][4][5] due to its excellent heat resistance, mechanical properties, chemical resistance, low thermal expansion coefficient, and dielectric constant. Compared with polyimide, 6 polyphenylene sulfide, 7 and polybenzoxazine, 8 the polymerization of phthalonitrile does not require the participation of solvent, which is advantageous in fabricating thick structures or components.…”

Section: Introductionmentioning

confidence: 99%

High-performance quinoxaline-containing phthalonitrile resin: Synthesis, curing kinetics, and properties

Jia,

Zhao,

Rong

et al. 2024

High Performance Polymers

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A novel quinoxaline-based phthalonitrile monomer, namely, 4,4′-(((quinoxaline-2,3-diylbis (oxy))bis (3,1-phenylene))bis (oxy))di-phthalonitrile (QDOP), was successfully synthesized by nucleophilic substitution reaction, which exhibits a low melting point (85°C) and a wide processing window (150°C). The QDOP monomer was cured with 4-aminophenoxy phthalonitrile (APPH) as catalyst by different temperature programs, and the curing process and kinetics were discussed in detail by non-isothermal differential scanning calorimetric (DSC). The QDOP polymer mainly forms triazine, isoindoline and phthalocyanine structure, as revealed by Fourier transform infrared (FTIR) spectroscopy, and its properties improved with the increase of post-curing temperature and curing time. After post-curing at 380°C, the polymer exhibited high storage modulus (3731 MPa), high glass-transition temperature (>400°C), and outstanding thermal stability and thermal oxidation stability.

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Section: Introductionmentioning

confidence: 99%

High-performance quinoxaline-containing phthalonitrile resin: Synthesis, curing kinetics, and properties

Jia,

Zhao,

Rong

et al. 2024

High Performance Polymers

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show abstract

“…[ 21,22 ] Wang et al demonstrated that the overall performance of RBHXs with curved rods and tubes aligned triangularly is 10% greater than RBHXs with circular rods and tubes aligned squarely. [ 23 ] Yu et al studied the thermo‐hydraulic performance of shell and tube heat exchangers (STHXs) with curve‐rod baffles (CRB) or anti‐vibration hexagon clamping baffles (HCB) based on a periodic four‐tube unit model. [ 24 ] From the numerical results, it was concluded that HCB has a better heat transfer enhancement but a poorer overall performance evaluation than CRB.…”

Section: Introductionmentioning

confidence: 99%

Performance enhancement and optimization for rod‐baffle heat exchangers with twisted oval tubes

Duan

Xiao

Sun³

et al. 2022

Can J Chem Eng

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Twisted oval tubes were proposed to be installed in rod‐baffle heat exchangers (RBHXs) to enhance heat transfer performance. A comparison between RBHXs with twisted oval tubes and those with circular tubes is performed. The results show that the heat transfer coefficient (h) per unit pressure drop (Δp) of RBHXs with twisted oval tubes is larger than 36.01%~100.24% compared with that of circular tubes when Reynolds numbers are 4577~22 889, and heat transfer enhancement is more obvious under lower inlet velocity. Then the structural parameters of RBHXs with twisted oval tubes are optimized using the response surface model and genetic algorithms. The results show that the h decreases first and then remains constant with the increase of the twisted pitch length, and decreases first and then rises again with the increase of the ratio of long axis to short axis. The Δp almost keeps constant with increasing twisted pitch length and decreases by 36.67% with the increase in the ratio of long axis to short axis. The comprehensive performance index h/Δp of the RBHXs with twisted oval tubes is enhanced by an average of 26.42% compared with that of original structure. The research results have a good guideline for heat transfer enhancement and the structural design of RBHXs.

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Control over phase structures’ evolution within the novel organic–inorganic hybrid system for achieving a comprehensive thermal, mechanical, and dielectric properties

Ding,

Liu,

Wang

et al. 2024

Chemical Engineering Journal

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Study of phthalonitrile resin modified by Si–B–C–N precursors with dynamic heat-resistant phase

Cited by 3 publications

References 47 publications

High-performance quinoxaline-containing phthalonitrile resin: Synthesis, curing kinetics, and properties

High-performance quinoxaline-containing phthalonitrile resin: Synthesis, curing kinetics, and properties

Performance enhancement and optimization for rod‐baffle heat exchangers with twisted oval tubes

Control over phase structures’ evolution within the novel organic–inorganic hybrid system for achieving a comprehensive thermal, mechanical, and dielectric properties

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