Wetting behavior of polymer melts on coated and uncoated tool steel surfaces
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in: Journal of Applied Polymer Science, Jahrgang 133.2016, Nr. 21, 43469, 16.02.2016.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Wetting behavior of polymer melts on coated and uncoated tool steel surfaces
AU - Zitzenbacher, Gernot
AU - Huang, Zefeng
AU - Längauer, Manuel
AU - Forsich, Christian
AU - Holzer, Clemens
PY - 2016/2/16
Y1 - 2016/2/16
N2 - The wettability of steel and coatings used for tools and screws in polymer processing is often determined at room temperature.However, it has to be taken into account that polymeric materials are processed at higher temperatures. Contact angle measurementsof melted PP, HDPE, PMMA, and PA 6.6 on steel and on TiN, TiAlN, CrN, DLC, and PTFE were performed in this work toinvestigate the wetting behavior under closer-to-processing conditions. The contact angle is dependent on time and the ambientatmosphere. Oxidation and degradation of the polymer melts influence wetting significantly. TiN, TiAlN, CrN, and DLC exhibit arather good wettability, whereas the highest contact angle of the polymer melts was observed with PTFE. Higher roughnesses of thesurfaces lead to an increase in the contact angle. It was also shown that a higher temperature causes a better wetting of the solidsurfaces. VC 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43469.
AB - The wettability of steel and coatings used for tools and screws in polymer processing is often determined at room temperature.However, it has to be taken into account that polymeric materials are processed at higher temperatures. Contact angle measurementsof melted PP, HDPE, PMMA, and PA 6.6 on steel and on TiN, TiAlN, CrN, DLC, and PTFE were performed in this work toinvestigate the wetting behavior under closer-to-processing conditions. The contact angle is dependent on time and the ambientatmosphere. Oxidation and degradation of the polymer melts influence wetting significantly. TiN, TiAlN, CrN, and DLC exhibit arather good wettability, whereas the highest contact angle of the polymer melts was observed with PTFE. Higher roughnesses of thesurfaces lead to an increase in the contact angle. It was also shown that a higher temperature causes a better wetting of the solidsurfaces. VC 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43469.
U2 - 10.1002/APP.43469
DO - 10.1002/APP.43469
M3 - Article
VL - 133.2016
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
SN - 0021-8995
IS - 21
M1 - 43469
ER -
