Preparation and properties of hollow silica tubes/bismaleimide/diallylbisphenol A composites with improved toughness, dielectric properties, and flame retardancy

Yao, Weiqin; Gu, Aijuan; Liang, Guozheng; Zhuo, Dongxian; Yuan, Li

doi:10.1002/pat.1872

Cited by 17 publications

(8 citation statements)

References 31 publications

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“…In recent years, the thermal and dielectric properties of BMI resins have been researched a lot, and examples are given in Figure 12. 30 –32 In order to diversify their scope of applications, especially at high temperatures, the T g s must be improved. Even as their joint density increased, their T g did not exceed 280°C.…”

Section: Resultsmentioning

confidence: 99%

“…29 In recent years, the thermal and dielectric properties of BMI resins have been researched a lot, and examples are given in Figure 12. [30][31][32] In order to diversify their scope of applications, especially at high temperatures, the T g s must be improved. Even as their joint density increased, their T g did not exceed 280 C. The modified BMI resin in this article had an increased cross-link density, but the T g increased only to a maximum of 300 C. In the field of electricity, many researchers have made many attempts to reduce the dielectric constant and dielectric loss of materials, but the dielectric constant was always around 3.00, and the dielectric loss was about 0.01.…”

Section: Dielectric Properties Of Abmi and Pbmimentioning

confidence: 99%

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Novel allyl and propenyl monomers for modification of the bismaleimide resins, with excellent dielectric properties and high glass transition temperatures

Chang

Liu

et al. 2019

High Performance Polymers

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Two new monomers were prepared by the reaction of 2-allylphenol and 4,4′-biphenyldicarbonyl chloride under different reaction conditions. The monomers were characterized by Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. The curing processes of N, N-4,4′-bismaleimidodiphenylmethyene with 4,4′-bis(2-allylphenyl) biphenyldicarbonylate (BABC) and 4,4′-bis(2-propenylphenyl benzoate) ether (BPBE) were studied by rheological analysis and differential scanning calorimetry. Melting points of two monomers, BABC and BPBE, are 64°C and 121°C, respectively. The ABMI [4,4′-bis(2-allylphenyl)biphenyl bismaleimide] and PBMI [4,4′-bis(2-propenylphenyl)biphenyl bismaleimide] resins showed exothermic peaks at 233°C and 204°C, respectively. The measured melting points are significantly lower than that of the traditional bismaleimide resin which is modified by allyl bisphenol A. Dynamic mechanical analysis of the materials showed glass transition temperatures of ABMI and PBMI to be in the range of 213–258°C and 302–339°C, respectively. Thermogravimetric analysis of the cured resins showed 5% weight loss for ABMI and PMBI at 437°C and 428°C, along with char residues of 35.6–39.5%, respectively, at 800°C under nitrogen atmosphere. Furthermore, dielectric constants of propenyl-modified resins were lower (2.46–3.10) with dissipation factors of 0.0034–0.0036, compared with those of allyl bisphenol A resins.

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Section: Resultsmentioning

confidence: 99%

Section: Dielectric Properties Of Abmi and Pbmimentioning

confidence: 99%

Novel allyl and propenyl monomers for modification of the bismaleimide resins, with excellent dielectric properties and high glass transition temperatures

Chang

Liu

et al. 2019

High Performance Polymers

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“…The dielectric constant of cured EP decreases monotonically along with an increasing content of DHBI, which is corresponding to the restriction of the rigid phosphaphenanthrene and triazine in cured EP on the mobility of molecular chains. 42 Also the symmetrical structure of triazine reduces the dielectric constant of cured resin. 40…”

Section: Other Properties Of Cured Epoxy Resinsmentioning

confidence: 99%

Flame–retarded epoxy resin with high glass transition temperature cured by DOPO-containing H-benzimidazole

Wang

Yuan

Zhao

et al. 2016

High Performance Polymers

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A halogen-free flame retardant of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide-containing H-benzimidazole (DHBI) was synthesized and subsequently used as co-curing agent of 4,4′-diamino-diphenylmethane for diglycidyl ether of bisphenol-A. The structure of DHBI was characterized by Fourier transform infrared (FTIR) spectroscopy, proton, carbon 13 and phosphorus-31 nuclear magnetic resonance, and mass spectroscopy. A series of cured epoxy resins (EPs) were prepared and their flame retardancy, thermal stability, flexibility, and dielectric properties were investigated. The resulting cured EP (EP-10) with 7.45 wt% of DHBI successfully achieved UL 94 V-0 rate with limited oxygen index of 35.6% and without dropping phenomenon. Compared with the cured pristine EP (EP-00), the glass transition temperature of EP-10 was increased by 6.9°C, accompanied with an enhancement of flexible strength by 13.1 MPa and a decrement of dielectric constant by 0.3 at the testing frequency of 1 MHz.

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“…Furthermore, cured unmodified BDM is relatively brittle because of its high crosslinking density and rigid structure . Fortunately, the two‐component high performance resin system basis on BMI and diallylbisphenol A (DBA) has good processing characteristics, toughness, and good dielectric properties .…”

Section: Introductionmentioning

confidence: 99%

Preparation of β‐SiCw/BDM/DBA composites with excellent comprehensive properties

Dang

Wang

Li³

et al. 2014

Polymer Composites

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Functionalized β‐SiC whiskers (β‐SiCw) are employed to prepare β‐SiCw/N,N′‐4, 4′‐bimaleimide diphenyl methane/diallylbisphenol A (β‐SiCw/BDM/DBA) composites via powder blending‐casting method. The thermal conductive coefficient of the β‐SiCw/BDM/DBA composites is 0.994 W/mK with 40 wt% functionalized β‐SiCw, five times higher than that of pure BDM/DBA. The mechanical properties of the β‐SiCw/BDM/DBA composites are optimal with 10 wt% functionalized β‐SiCw. Both thermal resistance and dielectric constant are increased with the increasing addition of β‐SiCw. For a given β‐SiCw loading, the surface functionalization of β‐SiCw exhibits a positive effect on the thermal conductivities and mechanical properties of the β‐SiCw/BDM/DBA composites. POLYM. COMPOS., 35:1875–1878, 2014. © 2014 Society of Plastics Engineers

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Preparation and properties of hollow silica tubes/bismaleimide/diallylbisphenol A composites with improved toughness, dielectric properties, and flame retardancy

Cited by 17 publications

References 31 publications

Novel allyl and propenyl monomers for modification of the bismaleimide resins, with excellent dielectric properties and high glass transition temperatures

Novel allyl and propenyl monomers for modification of the bismaleimide resins, with excellent dielectric properties and high glass transition temperatures

Flame–retarded epoxy resin with high glass transition temperature cured by DOPO-containing H-benzimidazole

Preparation of β‐SiCw/BDM/DBA composites with excellent comprehensive properties

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