Mechanical properties of phenolic-based nanocomposites reinforced by multi-walled carbon nanotubes and carbon fibers

Yeh, Meng‐Kao; Tai, Nyan‐Hwa; Lin, Yan-Jyun

doi:10.1016/j.compositesa.2007.07.010

Cited by 89 publications

(45 citation statements)

References 23 publications

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“…This enhancement of toughness mainly resulted from the intra-molecular cavities of hyperbranched polymers, which can absorb part of additional energy upon impact. [24] The thermal stability of the cured BHP resins is further investigated by TGA (Figure 8). The results are listed in Table 2.…”

Section: Properties Of Cured Bph Resinsmentioning

confidence: 99%

Synthesis and characterization of a new reactive hyperbranched polyphosphate ester, and its modification on benzoxazine-bisoxazoline resins

Wang

Tao

2014

Designed Monomers and Polymers

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A new reactive hyperbranched polyphosphate ester (HPPE) was synthesized by one step reaction. The structure of HPPE was characterized by 1 H NMR, FTIR, and inherent viscosity. High performance flame retardant modified benzoxazinebisoxazoline resins were obtained by the additional reaction with HPPE. Differential scanning calorimetry showed that there was an obvious shift in the exothermic peak of BPH5 (mass ratio of Ba-1,3-PBO and HPPE was 95:5) from 225 to 202°C, comparing with that of BPH0 (pure benzoxazine-bisoxazoline resins). It meant that the curing reaction could be catalyzed and accelerated by HPPE. The impact strength experiments illustrated that the maximum impact strength of modified resins may reach 19.2 kJ/m 2 . The char yield at 700°C of BPH5, BPH15, and BPH30 were 3.34, 4.47, and 7.75%, respectively. The benzoxazine-bisoxazoline resins modified by HPPE showed good flame retardancy.

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Section: Properties Of Cured Bph Resinsmentioning

confidence: 99%

Synthesis and characterization of a new reactive hyperbranched polyphosphate ester, and its modification on benzoxazine-bisoxazoline resins

Wang

Tao

2014

Designed Monomers and Polymers

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“…16 However, the use of nanofillers instead of the micronic ones allows a weight reduction in the aerospace systems, and it also leads to thinner protection layers with better ablative properties. 16 Studies show that mechanical, thermal and friction properties of phenolic-matrix/fiber com-posites can be improved by adding nanometric fillers such as carbon nanotubes, [17][18] layered silicates (nanoclays), 19 POSS compounds, 20 silica [21][22] or silicon carbide [23][24][25] to the phenolic resin. In the case of carbon-phenolic composites with nanoclays, studies show that higher nanoclay contents decrease the erosion rate, surface temperature and insulation index, 26 and can improve some properties, such as the flexural strength, stiffness and glass-transition temperature.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and tribological properties of nanofilled phenolic-matrix laminated composites

Pelin¹,

Stefan²,

Dincă³

et al. 2017

Mater. Tehnol.

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Phenolic-resin composites have attractive properties for applications in various fields from the wood and adhesive industry to the automotive, aeronautics and aerospace industries. The paper presents the obtaining of SiC-nanofilled phenolic-resin-based composites reinforced with a bidimensional fabric. Different contents of nanometric silicon carbide (0.5, 1 and 2) % mass fractions) were dispersed into the phenolic-resin matrix, using the ultrasonication method, to ensure the optimum dispersion. Several layers of the bidimensional fabric were impregnated with the obtained mixtures and the final laminated composites were obtained using high-temperature pressing, followed by a multistage temperature program. The obtained laminated nanocomposites were characterized with FTIR spectroscopy and evaluated in terms of mechanical and tribological properties. After mechanical testing, fracture cross-sections were characterized with SEM and optical microscopy. The results highlight the positive effect of the nanometric silicon-carbide addition to the phenolic-resin matrix of the laminated composites, in terms of mechanical and tribological performance, improving their strength, stiffness and abrasive properties. Keywords: laminated composites, tensile strength, flexural strength, nanometric silicon carbide, nanocomposites, friction coefficient Kompoziti fenolnih smol imajo mo`nosti raznovrstne uporabe na razli~nih podro~jih, tako na podro~ju lesne industrije, v industriji lepil, kot v avtomobilski in letalski industriji. Prispevek predstavlja pridobitev SiC fenolnih kompozitov na osnovi smole, oja~anih z bidimenzionalnimi vlakni. Razli~ne vsebine nanosilicijevega karbida (0,5, 1 in 2) % masnega odstotka, so bile razpr{ene z uporabo ultrazvo~ne metode v matrici, pridobljeni s smolo, da je bila zagotovljena optimalna disperzija. Ve~plasti bidimenzionalnih vlaken je bilo impregniranih s pridobljenimi me{anicami in kon~ni laminirani kompoziti so bili pridobljeni z visokotemperaturnim tla~nim pritiskanjem, kateremu je sledil ve~stopenjski temperaturni program. Pridobljeni laminirani kompoziti so bili preu~evani s FTIR-spektroskopijo in ovrednoteni glede na mehanske in tribolo{ke lastnosti. Presek zloma po mehanskem testiranju je bil preu~evan s SEM-mikroskopijo in opti~no mikroskopijo. Rezultati ka`ejo pozitiven u~inek dodatka nanometri~nih silicijevih karbidov, s smolo pridobljenih matric v ve~plastnih kompozitih, zaradi njihovih mehanskih in tribolo{kih lastnosti, in ker se tako izbolj{a mo~, togost in abrazivne lastnosti.

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“…This in turn can cause variable and diminished properties in the composite. While single-walled CNT (SWCNT) and multi-walled CNT (MWCNT)-based composites have been reported [14][15][16] to have enhanced elastic modulus and ultimate tensile strength, it has been frequently seen that beyond a certain loading, fillers can be deleterious (e.g. at ∼0.6 vol% in phenol/SWCNT composites [17] or polypropylene/SWCNT composites [16]), presumably due to bundling of the CNTs.…”

Section: Introductionmentioning

confidence: 99%

A Methodology for Quantitatively Characterizing the Dispersion of Nanostructures in Polymers and Composites

Pfeifer

Bandaru

2014

Materials Research Letters

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Supplementary Material Available OnlineWe seek to provide a metric for quantifying the degree of dispersion of nanostructures, such as carbon nanotubes in polymeric and other matrices, motivated by the technological importance of nanostructure-based composites. Our proposed measure of dispersion uses a quadrat-based sampling algorithm and a metric d(P||Q), to correlate randomness to the dispersion. This allows a quantitative comparison of the given distribution (say, P) to a preferred distribution or pattern (say, Q). We provide examples from our own studies and those from the literature on the application of the metric.

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Mechanical properties of phenolic-based nanocomposites reinforced by multi-walled carbon nanotubes and carbon fibers

Cited by 89 publications

References 23 publications

Synthesis and characterization of a new reactive hyperbranched polyphosphate ester, and its modification on benzoxazine-bisoxazoline resins

Synthesis and characterization of a new reactive hyperbranched polyphosphate ester, and its modification on benzoxazine-bisoxazoline resins

Mechanical and tribological properties of nanofilled phenolic-matrix laminated composites

A Methodology for Quantitatively Characterizing the Dispersion of Nanostructures in Polymers and Composites

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