The turbulent-flow-assisted electrostatic collection and alignment of recycled short-chopped carbon fiber in gaseous phase

Zhang, Shuo; Shen, Xing‐Xing; Tian, Yu; Fu, Yihan; Li, Mengze; Li, Shuran; Zhu, Weidong; Ke, Yinglin; Yan, Keping

doi:10.1016/j.seppur.2022.122518

Cited by 3 publications

(2 citation statements)

References 53 publications

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“…On the one hand, plenty of individual chopped fibers are unable to convert to a vertical state in an ultrahigh constant electric field within a short time, and they will fly upward to the substrate in an oblique manner. On the other hand, this rapid polarization will exacerbate fiber agglomeration . The chopped fibers with a high aspect ratio tend to agglomerate together, forming severe clumps resembling sea urchins due to the strong electrostatic attraction, interfiber bonding, and van der Waals force. , The chopped fibers in clumps are polarized too quickly to disperse in an ultrahigh constant electric field, attracting surrounding unpolarized fibers and forming larger clumps (Figure b,c).…”

Section: Resultsmentioning

confidence: 99%

Scalable Compliant Graphene Fiber-Based Thermal Interface Material with Metal-Level Thermal Conductivity via Dual-Field Synergistic Alignment Engineering

Lu,

Ming,

Cao

et al. 2024

ACS Nano

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High-performance thermal interface materials (TIMs) are highly desired for high-power electronic devices to accelerate heat dissipation. However, the inherent trade-off conflict between achieving high thermal conductivity and excellent compliance of filler-enhanced TIMs results in the unsatisfactory interfacial heat transfer efficiency of existing TIM solutions. Here, we report the graphene fiber (GF)-based elastic TIM with metal-level thermal conductivity via mechanical− electric dual-field synergistic alignment engineering. Compared with state-of-the-art carbon fiber (CF), GF features both superb high thermal conductivity of ∼1200 W m −1 K −1 and outstanding flexibility. Under dual-field synergistic alignment regulation, GFs are vertically aligned with excellent orientation (0.88) and high array density (33.5 mg cm −2 ), forming continuous thermally conductive pathways. Even at a low filler content of ∼17 wt %, GF-based TIM demonstrates extraordinarily high through-plane thermal conductivity of up to 82.4 W m −1 K −1 , exceeding most CF-based TIMs and even comparable to commonly used soft indium foil. Benefiting from the low stiffness of GF, GF-based TIM shows a lower compressive modulus down to 0.57 MPa, an excellent resilience rate of 95% after compressive cycles, and diminished contact thermal resistance as low as 7.4 K mm 2 W −1 . Our results provide a superb paradigm for the directed assembly of thermally conductive and flexible GFs to achieve scalable and high-performance TIMs, overcoming the long-standing bottleneck of mechanical−thermal mismatch in TIM design.

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Section: Resultsmentioning

confidence: 99%

Scalable Compliant Graphene Fiber-Based Thermal Interface Material with Metal-Level Thermal Conductivity via Dual-Field Synergistic Alignment Engineering

Lu,

Ming,

Cao

et al. 2024

ACS Nano

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“…To achieve this, selective catalytic reduction (SCR), electrostatic precipitator (ESP), and wet flue gas desulfurization (WFGD) technologies are widely installed in sequence [11][12][13][14]. Although ESP can remove up to 99% of fly ash, it is less effective for fine particles (smaller than 2.5 µm), and achieving the 5 mg/Nm 3 emission standard is challenging [15][16][17]. Since the first successful ultra-low emission CFPPs demonstration in 2014 [18], research on PM emissions has been increasing.…”

Section: Introductionmentioning

confidence: 99%

Study on the Effects of Wet Flue Gas Desulfurization on Particulate Matter Emission from Industrial Coal-Fired Power Plants

Wang

Zheng

et al. 2023

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This study aimed to investigate the effects of wet flue gas desulfurization (WFGD) on particulate matter (PM) emissions in coal-fired power plants (CFPPs) using an electrical low-pressure impactor (ELPI). The investigation was conducted on five industrial CFPPs of various loads in China to clarify the influence factors of WFGD on PM10 emissions. After WFGD, the proportion of PM2.5 to PM10 in the outlet flue gas increases, which showed that the WFGD system is selective in the capture of PM, with a significant effect on the capture of large particle sizes. The investigation found that four spray layers have a better effect on the capture of particles than two spray layers. Additionally, the investigation also found that unit load is not the main factor affecting the efficiency of PM10 capture by WFGD. Instead, the factors affecting the capture efficiency of PM10 by WFGD are the inlet flue gas temperature and the dust concentration. Relatively higher inlet flue gas temperature and lower inlet dust concentration will both result in higher emission of PM0.1~1 from the WFGD outlet. These findings suggest that a matched integration of WFGD and CFPP is essential for ultra-low PM emission control and green industry development.

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Synergistic effects of periodic weak spark and spatial electric field for one-step dispersion of carbon-based micro/nanomaterial agglomerates

Tian,

Li,

et al. 2024

Composites Part A: Applied Science and Manufacturing

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The turbulent-flow-assisted electrostatic collection and alignment of recycled short-chopped carbon fiber in gaseous phase

Cited by 3 publications

References 53 publications

Scalable Compliant Graphene Fiber-Based Thermal Interface Material with Metal-Level Thermal Conductivity via Dual-Field Synergistic Alignment Engineering

Scalable Compliant Graphene Fiber-Based Thermal Interface Material with Metal-Level Thermal Conductivity via Dual-Field Synergistic Alignment Engineering

Study on the Effects of Wet Flue Gas Desulfurization on Particulate Matter Emission from Industrial Coal-Fired Power Plants

Synergistic effects of periodic weak spark and spatial electric field for one-step dispersion of carbon-based micro/nanomaterial agglomerates

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