Transparent, high-thermal-conductivity ultradrawn polyethylene/graphene nanocomposite films

Xinglong Pan, Lihua Shen, Albertus P.H.J. Schenning, Cees W.M. Bastiaansen (Corresponding author)

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Transparent, ultradrawn, ultrahigh molecular weight polyethylene (UHMWPE)/graphene nanocomposite films with a high thermal conductivity are successfully fabricated by solution-casting and solid-state drawing. It is found that the low optical transmittance (<75%) of the ultradrawn UHMWPE/graphene composite films is drastically improved (>90%) by adding 2-(2H-benzontriazol-2-yl)-4,6-ditertpentylphenol (BZT) as a second additive. This high transmission is interpreted in terms of a reduced void content in the composite films and the improved dispersion of graphene both of which decrease light scattering. The high thermal conductivity is attributed to the π–π interaction between BZT and graphene. In addition, a high specific thermal conductivity of ≈75 W m−1 K−1 ρ−1 of the ultradrawn UHMWPE/graphene/BZT composite films is obtained, which is higher than most metals and polymer nanocomposite. These transparent films are potentially excellent candidates for thermal management in various applications due to a combination of low density, ease of processing, and high thermal conductivity.

LanguageEnglish
Article number1904348
JournalAdvanced Materials
DOIs
StateE-pub ahead of print - 22 Aug 2019

Fingerprint

Nanocomposite films
Graphite
Polyethylene
Graphene
Polyethylenes
Thermal conductivity
Ultrahigh molecular weight polyethylenes
Composite films
Opacity
Temperature control
Light scattering
Nanocomposites
Polymers
Casting
Metals
Processing
ultra-high molecular weight polyethylene

Keywords

  • graphene
  • polyethylene
  • thermal conductivity
  • transparency
  • ultradrawn composite

Cite this

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title = "Transparent, high-thermal-conductivity ultradrawn polyethylene/graphene nanocomposite films",
abstract = "Transparent, ultradrawn, ultrahigh molecular weight polyethylene (UHMWPE)/graphene nanocomposite films with a high thermal conductivity are successfully fabricated by solution-casting and solid-state drawing. It is found that the low optical transmittance (<75{\%}) of the ultradrawn UHMWPE/graphene composite films is drastically improved (>90{\%}) by adding 2-(2H-benzontriazol-2-yl)-4,6-ditertpentylphenol (BZT) as a second additive. This high transmission is interpreted in terms of a reduced void content in the composite films and the improved dispersion of graphene both of which decrease light scattering. The high thermal conductivity is attributed to the π–π interaction between BZT and graphene. In addition, a high specific thermal conductivity of ≈75 W m−1 K−1 ρ−1 of the ultradrawn UHMWPE/graphene/BZT composite films is obtained, which is higher than most metals and polymer nanocomposite. These transparent films are potentially excellent candidates for thermal management in various applications due to a combination of low density, ease of processing, and high thermal conductivity.",
keywords = "graphene, polyethylene, thermal conductivity, transparency, ultradrawn composite",
author = "Xinglong Pan and Lihua Shen and Schenning, {Albertus P.H.J.} and Bastiaansen, {Cees W.M.}",
year = "2019",
month = "8",
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doi = "10.1002/adma.201904348",
language = "English",
journal = "Advanced Materials",
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AU - Pan,Xinglong

AU - Shen,Lihua

AU - Schenning,Albertus P.H.J.

AU - Bastiaansen,Cees W.M.

PY - 2019/8/22

Y1 - 2019/8/22

N2 - Transparent, ultradrawn, ultrahigh molecular weight polyethylene (UHMWPE)/graphene nanocomposite films with a high thermal conductivity are successfully fabricated by solution-casting and solid-state drawing. It is found that the low optical transmittance (<75%) of the ultradrawn UHMWPE/graphene composite films is drastically improved (>90%) by adding 2-(2H-benzontriazol-2-yl)-4,6-ditertpentylphenol (BZT) as a second additive. This high transmission is interpreted in terms of a reduced void content in the composite films and the improved dispersion of graphene both of which decrease light scattering. The high thermal conductivity is attributed to the π–π interaction between BZT and graphene. In addition, a high specific thermal conductivity of ≈75 W m−1 K−1 ρ−1 of the ultradrawn UHMWPE/graphene/BZT composite films is obtained, which is higher than most metals and polymer nanocomposite. These transparent films are potentially excellent candidates for thermal management in various applications due to a combination of low density, ease of processing, and high thermal conductivity.

AB - Transparent, ultradrawn, ultrahigh molecular weight polyethylene (UHMWPE)/graphene nanocomposite films with a high thermal conductivity are successfully fabricated by solution-casting and solid-state drawing. It is found that the low optical transmittance (<75%) of the ultradrawn UHMWPE/graphene composite films is drastically improved (>90%) by adding 2-(2H-benzontriazol-2-yl)-4,6-ditertpentylphenol (BZT) as a second additive. This high transmission is interpreted in terms of a reduced void content in the composite films and the improved dispersion of graphene both of which decrease light scattering. The high thermal conductivity is attributed to the π–π interaction between BZT and graphene. In addition, a high specific thermal conductivity of ≈75 W m−1 K−1 ρ−1 of the ultradrawn UHMWPE/graphene/BZT composite films is obtained, which is higher than most metals and polymer nanocomposite. These transparent films are potentially excellent candidates for thermal management in various applications due to a combination of low density, ease of processing, and high thermal conductivity.

KW - graphene

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