A novel high performance RTM resin based on benzoxazine

Xiang, Hai; Hong, Ling; Wang, Jin; Lin, Song; Gu, Yi

doi:10.1002/pc.20105

Cited by 61 publications

(36 citation statements)

References 7 publications

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“…All chemicals were used as received. The BB benzoxazine was synthesized as a previous report from our group [8]. The chemical structure of BB benzoxazine and polybenzoxazine is shown in Scheme 1.…”

Section: Methodsmentioning

confidence: 99%

Effect of La2O3 on the thermal stability of polybenzoxazine based on 4,4′-diaminodiphenyl methane

Zhu

Hong

2012

J Polym Res

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La 2 O 3 /polybenzoxazine composite was prepared through incorporating La 2 O 3 into benzoxazine based on phenol and 4,4′-diaminodiphenyl methane (BB) to study the effect of La 2 O 3 on the thermal stability of crosslinked polybenzoxazines. The ring-opening polymerization of BB benzoxazine was analyzed by DSC and measurement of viscosity. The structure and the thermal stability of BB polybenzoxazine were characterized by FTIR, TGA and DMA. The thermal degradation processes of polybenzoxazine were investigated using TGA-FTIR. The results showed that La 2 O 3 could form coordination interaction with the nitrogen atoms of BB and thus promoted the polymerization of BB benzoxazine. The coordination interaction could not influence the volatilization of the amine degradation gases during the thermal degradation process of BB polybenzoxazine due to the amine structure existing in the chemical crosslinking network of polybenzoxazine and being stable. Furthermore, the coordination interaction weakened the C-N and C-C bonds in CH 2 -NR-CH 2 -of BB polybenzoxazine and thus accelerated the appearance and volatilization of the phenolic gases during the thermal degradation process, resulting in the decrease of the thermal stability and char yield at 800°C of BB polybenzoxazine.

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Section: Methodsmentioning

confidence: 99%

Effect of La2O3 on the thermal stability of polybenzoxazine based on 4,4′-diaminodiphenyl methane

Zhu

Hong

2012

J Polym Res

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“…The benzoxazine monomer based on p-cresol and aniline, 3-benzyl-3,4-dihydro-6-methyl-2H-1,3-benzoxazine (abbreviated as PC-a, which would also be used to designate the corresponding polymer, since only the polymers were analyzed in this paper), was synthesized in solution similar to a previous study. [10] The chemical structure of PC-a monomer and its polymer is shown in Scheme 1. The transition metal oxides nanoparticles, Y 2 O 3 , La 2 O 3 , Pr 6 O 11 , and Gd 2 O 3 , were supplied by Nanjing University of Science and Technology; mean particle size of all oxides was about 60 nm.…”

Section: Methodsmentioning

confidence: 99%

Effect of Interaction between Transition Metal Oxides and Nitrogen Atoms on Thermal Stability of Polybenzoxazine

Zhu

2011

Journal of Macromolecular Science, Part B

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To investigate the interaction of transition metal oxides with polybenzoxazine and their influence on the thermal degradation mechanism of polybenzoxazine, transition metal oxides Y 2 O 3 , La 2 O 3 , Pr 6 O 11 , and Gd 2 O 3 were added to benzoxazine monomer based on p-cresol and aniline to prepare polybenzoxazine composites. The chemical structures and final polymerization extent of polybenzoxazine and its composites were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and differential scanning colorimetry (DSC). The molecular weights of these cured samples were determined by gel permeation chromatography (GPC). The influence of transition metal oxides on the thermal properties of polybenzoxazine matrix was investigated using dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), thermogravimetric analyzer interfaced with Fourier transform infrared spectroscopy (TG-IR), and (pyrolysis-gas chromatography-mass spectrometry)Py-GC-MS. The results show that transition metal oxides can form coordination interactions with the nitrogen atoms of polybenzoxazine. The coordination interaction can anchor the aniline and make the molecular weights of polybenzoxazine matrix increase, which delays evaporation of aniline during thermal degradation, improves the char yield at 800 • C, and increases the glass transition temperatures (T g ) of polybenzoxazine composites.

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“…DDMbased benzoxazine (named BM, Scheme 2.) used in this study was synthesized in our laboratory according to the reported method [21]. DDE-cardanol benzoxazine (BZ-Oc) and DDS-cardanol benzoxazine (BZ-Sc) were prepared similarly to BZ-Mc; the yield of BZ-Oc and BZ-Sc was 85% and 78%, respectively.…”

Section: Methodsmentioning

confidence: 99%

Processability and mechanical properties of bisbenzoxazine modified by the cardanol-based aromatic diamine benzoxazine

Zhang

Zhou

et al. 2014

Journal of Polymer Engineering

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To improve the processability and toughness of bisbenzoxazine, a series of cardanol-based aromatic diamine benzoxazine (BZ-Xc) monomers were synthesized from cardanol, formaldehyde aqueous solution and aromatic diamines with different bridging groups such as -CH 2 -, -O-and -SO 2 -. The curing behavior, viscosity, thermal and mechanical properties of 4,4′-diaminodiphenylmethane (DDM)-based bisbenzoxazine (BM) and BZ-Xc copolymers were studied systematically. The results demonstrate that the plasticizing effect and flexibility of the alkyl side chain on BZ-Xc significantly reduced the melting viscosity of BM/BZ-Xc blends and improved the toughness of the copolymers. At the same time, the heat-resistant and mechanical properties of the copolymers were retained, because of the bifunctional structure of BZ-Xc. Moreover, the melting viscosity, glass transition temperature and curing temperature of the corresponding copolymers were increased as the result of rigidity and electron-withdrawing effects of the -SO 2 -bridging group compared to others.

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A novel high performance RTM resin based on benzoxazine

Cited by 61 publications

References 7 publications

Effect of La2O3 on the thermal stability of polybenzoxazine based on 4,4′-diaminodiphenyl methane

Effect of La2O3 on the thermal stability of polybenzoxazine based on 4,4′-diaminodiphenyl methane

Effect of Interaction between Transition Metal Oxides and Nitrogen Atoms on Thermal Stability of Polybenzoxazine

Processability and mechanical properties of bisbenzoxazine modified by the cardanol-based aromatic diamine benzoxazine

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