Aqueous dispersion of submicron-sized diamond particles for thermally conductive polyurethane coating

Eunsoo Kang; Seongcheol Choi; Changhoon Choi; Sang Eun Shim

doi:10.1016/j.colsurfa.2012.09.028

Aqueous dispersion of submicron-sized diamond particles for thermally conductive polyurethane coating

Eunsoo Kang, Seongcheol Choi, Changhoon Choi, Sang Eun Shim

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

To improve corrosion resistance of steel sheet, polymeric resin coating has been practiced in steel industry. However, this method has a drawback to use because polymeric coating layer decreases the thermal conductivity. With an aim to enhance the thermal conductivity of the polymeric coating layer on steel sheet, submicron-sized diamond (μD) particles were employed as a thermally conductive material. Various anionic and non-ionic surfactants were tested in order to stabilize heavy μD particles in aqueous phase. Among them, 1-pyrenecarboxylic acid (PCA) endowed the best stability to μD particles. The polyurethane-based coating layer containing PCA-stabilized μD particles was applied on the steel sheet. The thermal conductivity of the coating layer effectively increased from 0.351. W/(m. K) (0. wt% μD) to 0.434. W/(m. K) (for 1.0. wt% μD). Furthermore, the corrosion behavior was not observed upon salt spray test for 144. h.

Original language	English
Pages (from-to)	255-261
Number of pages	7
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	415
DOIs	https://doi.org/10.1016/j.colsurfa.2012.09.028
State	Published - 2012

Bibliographical note

Funding Information:
This work was financially supported by POSCO Co., Ltd., Republic of Korea .

Keywords

1-Pyrenecarboxylic acid
Coating
Diamond
Dispersion
Particles
Thermal conductivity

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10.1016/j.colsurfa.2012.09.028

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title = "Aqueous dispersion of submicron-sized diamond particles for thermally conductive polyurethane coating",

abstract = "To improve corrosion resistance of steel sheet, polymeric resin coating has been practiced in steel industry. However, this method has a drawback to use because polymeric coating layer decreases the thermal conductivity. With an aim to enhance the thermal conductivity of the polymeric coating layer on steel sheet, submicron-sized diamond (μD) particles were employed as a thermally conductive material. Various anionic and non-ionic surfactants were tested in order to stabilize heavy μD particles in aqueous phase. Among them, 1-pyrenecarboxylic acid (PCA) endowed the best stability to μD particles. The polyurethane-based coating layer containing PCA-stabilized μD particles was applied on the steel sheet. The thermal conductivity of the coating layer effectively increased from 0.351. W/(m. K) (0. wt% μD) to 0.434. W/(m. K) (for 1.0. wt% μD). Furthermore, the corrosion behavior was not observed upon salt spray test for 144. h.",

keywords = "1-Pyrenecarboxylic acid, Coating, Diamond, Dispersion, Particles, Thermal conductivity",

author = "Eunsoo Kang and Seongcheol Choi and Changhoon Choi and Shim, {Sang Eun}",

note = "Funding Information: This work was financially supported by POSCO Co., Ltd., Republic of Korea .",

year = "2012",

doi = "10.1016/j.colsurfa.2012.09.028",

language = "English",

volume = "415",

pages = "255--261",

journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",

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TY - JOUR

T1 - Aqueous dispersion of submicron-sized diamond particles for thermally conductive polyurethane coating

AU - Kang, Eunsoo

AU - Choi, Seongcheol

AU - Choi, Changhoon

AU - Shim, Sang Eun

N1 - Funding Information: This work was financially supported by POSCO Co., Ltd., Republic of Korea .

PY - 2012

Y1 - 2012

N2 - To improve corrosion resistance of steel sheet, polymeric resin coating has been practiced in steel industry. However, this method has a drawback to use because polymeric coating layer decreases the thermal conductivity. With an aim to enhance the thermal conductivity of the polymeric coating layer on steel sheet, submicron-sized diamond (μD) particles were employed as a thermally conductive material. Various anionic and non-ionic surfactants were tested in order to stabilize heavy μD particles in aqueous phase. Among them, 1-pyrenecarboxylic acid (PCA) endowed the best stability to μD particles. The polyurethane-based coating layer containing PCA-stabilized μD particles was applied on the steel sheet. The thermal conductivity of the coating layer effectively increased from 0.351. W/(m. K) (0. wt% μD) to 0.434. W/(m. K) (for 1.0. wt% μD). Furthermore, the corrosion behavior was not observed upon salt spray test for 144. h.

AB - To improve corrosion resistance of steel sheet, polymeric resin coating has been practiced in steel industry. However, this method has a drawback to use because polymeric coating layer decreases the thermal conductivity. With an aim to enhance the thermal conductivity of the polymeric coating layer on steel sheet, submicron-sized diamond (μD) particles were employed as a thermally conductive material. Various anionic and non-ionic surfactants were tested in order to stabilize heavy μD particles in aqueous phase. Among them, 1-pyrenecarboxylic acid (PCA) endowed the best stability to μD particles. The polyurethane-based coating layer containing PCA-stabilized μD particles was applied on the steel sheet. The thermal conductivity of the coating layer effectively increased from 0.351. W/(m. K) (0. wt% μD) to 0.434. W/(m. K) (for 1.0. wt% μD). Furthermore, the corrosion behavior was not observed upon salt spray test for 144. h.

KW - 1-Pyrenecarboxylic acid

KW - Coating

KW - Diamond

KW - Dispersion

KW - Particles

KW - Thermal conductivity

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U2 - 10.1016/j.colsurfa.2012.09.028

DO - 10.1016/j.colsurfa.2012.09.028

M3 - Article

AN - SCOPUS:84870282965

SN - 0927-7757

VL - 415

SP - 255

EP - 261

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

ER -

Aqueous dispersion of submicron-sized diamond particles for thermally conductive polyurethane coating

Abstract

Bibliographical note

Keywords

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