Evaluation of Aging Performance of Thermal Gel Subjected to Laser Flash Tests

Adsorbates of [Fe(CN)5SCN]3- complex ions on semiconducting Pb(SCN)2 surfaces were subject to photoelectromotive force (PEMF) investigations. Laser flash excitation of the adsorbates at 560 nm yields a weak PEMF signal due to spectral sensitization of the semiconductor Pb(SCN)2, not absorbing in the visible region. PEMF signals observed with laser flash excitation at 337 nm are explained by hole trapping accompanied with photoinduced redox reactions of the complex, when the number of flashes is increased.

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trans→cis Photoisomerization of 1-styrylnaphthalene and its 4′-bromo- and 4′-chloro-derivatives. A fluorimetric and laser flash photolytic study

Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases ◽

10.1039/f19898501469 ◽

1989 ◽

Vol 85 (6) ◽

pp. 1469 ◽

Cited By ~ 9

Author(s):

Fausto Elisei ◽

Ugo Mazzucato ◽

Helmut Görner

Keyword(s):

Laser Flash ◽

Chloro Derivatives

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Highly thermally conductive UHMWPE/NG composites with the segregated structure and their application for heat spreader

Journal of Thermoplastic Composite Materials ◽

10.1177/0892705720965649 ◽

2020 ◽

pp. 089270572096564

Author(s):

Xiao Wang ◽

Hui Lu ◽

Jun Chen

Keyword(s):

Thermal Conductivity ◽

Laser Flash ◽

Heating Process ◽

X Ray Diffraction ◽

Heat Spreader ◽

Conductive Composites ◽

Compression Direction ◽

Thermal Analyzer ◽

Thermally Conductive ◽

Plane Direction

In this work, ultra-high molecular weight polyethylene (UHMWPE)/natural flake graphite (NG) polymer composites with the extraordinary high thermal conductivity were prepared by a facile mixed-heating powder method. Morphology observation and X-ray diffraction (XRD) tests revealed that the NG flakes could be more tightly coated on the surface of UHMWPE granules by mixed-heating process and align horizontally (perpendicular to the hot compression direction of composites). Laser flash thermal analyzer (LFA) demonstrated that the thermal conductivity (TC) of composites with 21.6 vol% of NG reached 19.87 W/(m·K) and 10.67 W/(m·K) in the in-plane and through-plane direction, respectively. Application experiment further demonstrated that UHMWPE/NG composites had strong capability to dissipate the heat as heat spreader. The obtained results provided a valuable basis for fabricating high thermal conductive composites which can act as advanced thermal management materials.

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Effects of CeO2 nano-particles on anti-aging performance of HDPE polymer during friction

Wear ◽

10.1016/j.wear.2021.203832 ◽

2021 ◽

pp. 203832

Author(s):

Shifan Li ◽

Conglin Dong ◽

Chengqing Yuan ◽

Shutian Liu ◽

Xiuqin Bai

Keyword(s):

Nano Particles ◽

Aging Performance

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