Effect of carbon nanotube length on thermal, electrical and mechanical properties of CNT/bismaleimide composites

Wang, Xin; Jiang, Qian; Xu, Weizong; Cai, Weiping; Inoue, Yasuo; Zhu, Yuntian

doi:10.1016/j.carbon.2012.10.041

Cited by 175 publications

(96 citation statements)

References 39 publications

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“…The injection process was kept slowly to ensure a full impregnation because the pore size of the BP is nano-scale. After the impregnation, the mold was put into an oven and was heated up to 1008C at a rate of 28C min 21 , holding at 1008C for 5 h under the vacuum pressure (namely 0.1 MPa). Afterward, the assembly was cooled down to room temperature and the vacuum cured CNT BP/epoxy composites was obtained.…”

Section: Preparation Of the Cnt Bps/epoxy Compositesmentioning

confidence: 99%

“…A dynamic mechanical analyzer (TA, DMA Q800) was employed to evaluate the storage modulus and glass transition temperature (T g ) of the prepared BP/epoxy composites, operating in the tensile test mode at an oscillation frequency of 1 Hz. Data were collected from 20 to 1258C at a scanning rate of 58C min 21 . Quasi-static tensile tests on large-size specimens was carried out to examine the tensile properties of the composites according to ASTM D638 testing standard, with a length of 115 mm and a width in narrow section of 6 mm (shown in Fig.…”

Section: Characterizationmentioning

confidence: 99%

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Improved mechanical properties of positive‐pressure filtered CNT buckypaper reinforced epoxy composites via modified preparation process

2016

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In the present study, a positive-pressure filtration method was proposed to prepare carbon nanotube buckypapers (CNT BPs) with desirable porosity and mechanical properties. The obtained BPs were then infiltrated with epoxy via vacuum-aided resin transfer molding (VARTM) process without the use of a solvent. Some of the impregnated composites were directly cured under a vacuum pressure. The others were put into a hot-press to cure under a higher pressure of 0.7 MPa. Results have shown that the tensile strength and modulus of the vacuum cured composites were obtained as 215 MPa and 13.3 GPa, whereas these two values could reach 319 MPa and 20.3 GPa, respectively, for the hot-press cured composites. The glass transition temperature of the hot-press cured composites was also improved by 7% compared with that of the vacuum cured composites. Furthermore, SEM observation revealed that the BPs were infiltrated well with epoxy and good interfacial bonding between CNTs and epoxy was obtained. This study has demonstrated that the random aligned CNT BPs reinforced epoxy composites possessing desirable mechanical properties can be fabricated by using conventional processes when the microstructure of the BPs is improved. POLYM. COMPOS., 00:000-000, 2016.

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Section: Preparation Of the Cnt Bps/epoxy Compositesmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

Improved mechanical properties of positive‐pressure filtered CNT buckypaper reinforced epoxy composites via modified preparation process

2016

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“…Carbon nanotubes (CNTs) had been discovered by Iijima since 1991 [1]; this particular one-dimensional graphite structure has attracted great research interest in experiment and theory due to its excellent electric, thermal, and mechanical properties [2,3]. Results of these studies show that CNTs have high aspect ratio, high mechanical strength, chemical stability, and peculiar physical properties [4].…”

Section: Introductionmentioning

confidence: 99%

Effects of the Growth Time and the Thickness of the Buffer Layer on the Quality of the Carbon Nanotubes

Chuen

2017

Journal of Nanomaterials

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Direct growth of carbon nanotubes (CNTs) array onto silicon substrate by the chemical vapor deposition (CVD) is reported. Experimental results show that the thickness of the buffer layer has a significant effect on the morphology and defects of the array, and when the buffer layer is about 15 nm, the best array on the silicon substrate can be obtained. Moreover, when the growth time is less than the threshold time (70 minutes), the array height will increase with the increase of the time. Importantly, when the growth time is higher than this threshold time, the growth of array will stop, but when the growth is continuing, the amorphous carbon and carbon can cluster, which will affect the structure of the array. These results provide a good material basis for the device, thermal, and conductivity technology.

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“…The difference between SWCNTs and MWCNTs is SWCNTs show single-layer of graphene sheet whereas MWCNTs consist of multi-layer of graphene sheets [21]. CNTs also can be used in many of fields, including chemical, mechanical, and electrical applications, due to their excellent characteristic properties [22][23][24][25]. In terms of theory, the structure of MWCNTs is very complex and much more difficult to confirm that that of SWCNTs.…”

Section: Introductionmentioning

confidence: 99%

Experimental Determination of the Performance of Rice Husk-Carbon Nanotube Composites for Absorbing Microwave Signals in the Frequency Range of 12.4-18 GHZ

Lee¹,

Malek²,

Cheng³

et al. 2013

PIER

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Abstract-Composites of rice husks and carbon nanotubes (RHCNTs) are an innovation in improving the absorption of microwave signals. Rice husks, which are an agricultural waste material, have been found to possess a significant propensity for absorbing microwave signals. Studies have shown that both rice husks and carbon nanotubes (CNTs) have high percentages of carbon. Thus, in this paper, we present the results of our experimental study in which we varied the ratios of rice husks and CNTs in the composite materials and determined the dielectric properties of the composites and measured their abilities to absorb microwave signals. The experimental microwave

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Effect of carbon nanotube length on thermal, electrical and mechanical properties of CNT/bismaleimide composites

Cited by 175 publications

References 39 publications

Improved mechanical properties of positive‐pressure filtered CNT buckypaper reinforced epoxy composites via modified preparation process

Improved mechanical properties of positive‐pressure filtered CNT buckypaper reinforced epoxy composites via modified preparation process

Effects of the Growth Time and the Thickness of the Buffer Layer on the Quality of the Carbon Nanotubes

Experimental Determination of the Performance of Rice Husk-Carbon Nanotube Composites for Absorbing Microwave Signals in the Frequency Range of 12.4-18 GHZ

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