Study on an amine-containing benzoxazine: Homo- and copolymerization with epoxy resin

Zhang, Lei; Wang, Mozhen; Wu, Jingshen

doi:10.3144/expresspolymlett.2016.56

Cited by 25 publications

(19 citation statements)

References 32 publications

(47 reference statements)

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“…The candidates in this respect are unsaturated polyester, VE, cyanate, and especially benzoxazine resins. In the case of the latter two advanced resins, the incorporation of suitably surface‐modified BA may even contribute to reducing the rather high crosslinking temperatures …”

Section: Thermoset/ba Nanocompositesmentioning

confidence: 99%

Polymer/boehmite nanocomposites: A review

Karger‐Kocsis

Lendvai

2017

J of Applied Polymer Sci

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Boehmite is an aluminum oxyhydroxide [AlO(OH)] which is preferentially used as precursor for the production of (transition) aluminum oxides. Boehmite alumina (BA) nanoparticles are available in various morphologies due to versatile synthesis routes, which are briefly introduced. The peripheral hydroxyl groups of BA offer manifold functionalization possibilities for tailoring the dispersion and filler/matrix adhesion properties. The incorporation of BA nanofillers, with and without surface treatments, may yield improved mechanical and novel functional properties in polymers. BA can be introduced in polymers and polymer composites through different methods. This comprehensive overview covers the basic results reported on polymer/BA nanocomposites in the open literature. In this review, polymer matrices are grouped into thermoplastics, thermosets, and rubbers. Using literature results and our own findings, we have identified promising R&D trends with polymer/BA nanocomposites. V C 2017 Wiley Periodicals, Inc. J.Appl. Polym. Sci. 2018, 135, 45573.

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Section: Thermoset/ba Nanocompositesmentioning

confidence: 99%

Polymer/boehmite nanocomposites: A review

Karger‐Kocsis

Lendvai

2017

J of Applied Polymer Sci

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“…Polybenzoxazines exhibit superior characteristics upon polymerization including dimensional stability, near-zero volumetric shrinkage, and no volatile by-product elimination [4]. Furthermore, polybenzoxazines can be alloyed with various chemicals including epoxy [5][6][7], polyurethane [8], poly (imide-siloxane) [9], and bismaleimides [10,11], suppressing the inherent brittleness of polybenzoxazines and meeting the requirement of numerous applications with tailor-made properties. Promising applications of polybenzoxazines, their copolymers, and their composites have been demonstrated, including coating [12][13][14], proton conductive porous substrate [15], optical probe [16], bipolar plates in fuel cell [17], superinsulating materials for space applications [18], shape memory polymer [19], halogen-free flame retardant material [20], porous carbon anode [21], and self-healing polymers [22].…”

Section: Introductionmentioning

confidence: 99%

“…TRLS properties were fabricated and explored. Among other thermoplastic [37][38][39][40][41] and thermosetting [5][6][7] modifiers, urethane prepolymers appropriately modified the polybenzoxazine networks, endowing the BA-a/PU alloys with unique optical properties. Interestingly, TRLS properties were intrinsically associated with the BA-a/PU alloys without incorporating additional organic crystals or liquid crystals.…”

Section: Introductionmentioning

confidence: 99%

Form-stable benzoxazine-urethane alloys for thermally reversible light scattering materials

Parnklang¹,

Boonyanuwat²,

Mora³

et al. 2019

Express Polym. Lett.

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Thermally reversible light scattering (TRLS) materials based solely on benzoxazine-urethane (BA-a/PU) alloys were successfully fabricated and demonstrated in this work. The alloys displayed the opaque state below 40°C. The alloys were transformed to the transparent state upon exposing to the transition temperature of 60-130 °C, depending on the molecular weights and mass concentrations of urethane prepolymers in the BA-a/PU alloys. The optical state transitions were reversible with small hystereses. BA-a/PU alloys exhibited a good optical contrast with 0%T at the light scattering state and almost 100%T at the transparent state. The alloys were glassy and form-stable up to 250 °C, due to the synergistic behavior in the glass transition temperatures. The reaction-induced phase separation effectuated by the incorporation of urethane prepolymer into thermosetting polybenzoxazine, the sizes and local concentrations of the phase-separated urethane microdomains in the supporting polybenzoxazine matrix, and the reversible dissolution and demixing of urethane microdomains and polybenzoxazine phase played crucial roles on TRLS properties of the developed benzoxazine-urethane alloys.

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“…Hence, polybenzoxazine precursors often represent an advantage in sample processing and film preparation due to their polymeric nature. Furthermore, to improve the processability and mechanical properties of prepared polybenzoxazines, benzoxazine units were incorporated either as a side chain or as end chain or in a main chain of a polymer . Additionally, the properties of prepared polybenzoxazine composites could be controlled by the thermoplastic component used, for example, polyesters, polyethers, polyvinylchloride, polystyrenes, polysiloxanes, poly(methyl methacrylates), and polyacetylenes.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, to improve the processability and mechanical properties of prepared polybenzoxazines, benzoxazine units were incorporated either as a side chain or as end chain or in a main chain of a polymer. 14,[25][26][27][28][29][30][31] Additionally, the properties of prepared polybenzoxazine composites could be controlled by the thermoplastic component used, for example, polyesters, polyethers, polyvinylchloride, polystyrenes, polysiloxanes, poly(methyl methacrylates), and polyacetylenes. Also, the addition of fibers and inorganic compounds were often added and mixed with benzoxazine molecules with the aim of obtaining polybenzoxazine with improved properties.…”

Section: Introductionmentioning

confidence: 99%

Main‐chain benzoxazine oligomers: Effects of molecular weight on the thermal, mechanical, and viscoelastic properties

Ručigaj

Štirn

Šebenik

et al. 2018

J of Applied Polymer Sci

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With the intent to study materials processing properties during the curing process, oligomeric benzoxazines of different molecular weight and distribution were obtained from 4‐tert‐butylphenol, bisphenol A, 4,4′‐diaminodiphenylmethane and paraformaldehyde by varying the amounts of phenolic compounds. Average molecular weight and distribution of prepared mixtures of polybenzoxazine precursors were determined by gel permeation chromatography analysis. By knowing the molecular weight distribution of prepared mixtures of polybenzoxazine precursors its effect on thermal, mechanical, and viscoelastic properties of the resin during processing and polymerization could be investigated. Mixtures of polybenzoxazine precursors of higher average molecular weight and broader molecular weight distribution displayed faster curing, lower curing conversions, and higher crosslinking densities of cured resins leading to polybenzoxazines with improved properties. This investigation was oriented towards the material processing aspects with the focus on the effect of molecular weights and viscoelastic properties of starting materials on the proceeding of the curing, including changes in material properties, and sample molding. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46659.

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Study on an amine-containing benzoxazine: Homo- and copolymerization with epoxy resin

Cited by 25 publications

References 32 publications

Polymer/boehmite nanocomposites: A review

Polymer/boehmite nanocomposites: A review

Form-stable benzoxazine-urethane alloys for thermally reversible light scattering materials

Main‐chain benzoxazine oligomers: Effects of molecular weight on the thermal, mechanical, and viscoelastic properties

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