The Relationship between a Defined Microstructure within the Mold Surface and the Corresponding Roughness on the Part: A Systematic Study on Particle Size, Filler-, and Compatibilizer Content
The perception of a surface and its haptic properties are significantly influenced by roughness and microstructure, respectively, whereby non-negligible parameters include friction, contact area, temperature, and humidity between the human finger and the examined surface. In particular, for a scient...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/16/2757 |
| _version_ | 1797522256948101120 |
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| author | Roman Christopher Kerschbaumer Silvester Bolka Teja Pesl Ivica Duretek Thomas Lucyshyn |
| author_facet | Roman Christopher Kerschbaumer Silvester Bolka Teja Pesl Ivica Duretek Thomas Lucyshyn |
| author_sort | Roman Christopher Kerschbaumer |
| collection | DOAJ |
| description | The perception of a surface and its haptic properties are significantly influenced by roughness and microstructure, respectively, whereby non-negligible parameters include friction, contact area, temperature, and humidity between the human finger and the examined surface. In particular, for a scientific investigation on haptic influences, the production of samples with a defined surface roughness is indispensable. The aim of this study is to analyze the impact of various mold insert roughnesses combined with the influences of particle size, filler-, and compatibilizer content on impression quality. An unfilled high density polyethylene was chosen as a reference for the impression quality investigations, while fillers with significantly different particle sizes and a compatibilizer were used to produce proprietary compounds. Injection molded parts were manufactured utilizing mold inserts with three different line roughness values. To support the obtained results, a multivariate analysis of variance, a simulation of the filling phase as well as a rheological material characterization were conducted. The results revealed that (i) the impression quality can be independent of the applied insert roughness based on the filler particle size that was studied, (ii) an increasing on both filler particle size and compatibilizer content raise the sample roughness as a function of the penetration ability of the filler into the insert valleys, and (iii) with a higher insert roughness, the thermoplastic moldings generally exhibit a significantly smoother topography. An assumed correlation between part roughness and melt viscosity could not be confirmed. |
| first_indexed | 2024-03-10T08:26:49Z |
| format | Article |
| id | doaj.art-e0f1e13a98554a049a89cc3a7b6132b9 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T08:26:49Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-e0f1e13a98554a049a89cc3a7b6132b92023-11-22T09:23:57ZengMDPI AGPolymers2073-43602021-08-011316275710.3390/polym13162757The Relationship between a Defined Microstructure within the Mold Surface and the Corresponding Roughness on the Part: A Systematic Study on Particle Size, Filler-, and Compatibilizer ContentRoman Christopher Kerschbaumer0Silvester Bolka1Teja Pesl2Ivica Duretek3Thomas Lucyshyn4Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, 8700 Leoben, AustriaFaculty of Polymer Technology, Ozare 19, 2380 Slovenj Gradec, SloveniaFaculty of Polymer Technology, Ozare 19, 2380 Slovenj Gradec, SloveniaMontanuniversitaet Leoben, Department of Polymer Engineering and Science, Polymer Processing, Otto Gloeckel-Strasse 2, 8700 Leoben, AustriaMontanuniversitaet Leoben, Department of Polymer Engineering and Science, Polymer Processing, Otto Gloeckel-Strasse 2, 8700 Leoben, AustriaThe perception of a surface and its haptic properties are significantly influenced by roughness and microstructure, respectively, whereby non-negligible parameters include friction, contact area, temperature, and humidity between the human finger and the examined surface. In particular, for a scientific investigation on haptic influences, the production of samples with a defined surface roughness is indispensable. The aim of this study is to analyze the impact of various mold insert roughnesses combined with the influences of particle size, filler-, and compatibilizer content on impression quality. An unfilled high density polyethylene was chosen as a reference for the impression quality investigations, while fillers with significantly different particle sizes and a compatibilizer were used to produce proprietary compounds. Injection molded parts were manufactured utilizing mold inserts with three different line roughness values. To support the obtained results, a multivariate analysis of variance, a simulation of the filling phase as well as a rheological material characterization were conducted. The results revealed that (i) the impression quality can be independent of the applied insert roughness based on the filler particle size that was studied, (ii) an increasing on both filler particle size and compatibilizer content raise the sample roughness as a function of the penetration ability of the filler into the insert valleys, and (iii) with a higher insert roughness, the thermoplastic moldings generally exhibit a significantly smoother topography. An assumed correlation between part roughness and melt viscosity could not be confirmed.https://www.mdpi.com/2073-4360/13/16/2757haptic propertiessurface topographymolded surface roughnessmold insert roughnessimpression qualityreplication |
| spellingShingle | Roman Christopher Kerschbaumer Silvester Bolka Teja Pesl Ivica Duretek Thomas Lucyshyn The Relationship between a Defined Microstructure within the Mold Surface and the Corresponding Roughness on the Part: A Systematic Study on Particle Size, Filler-, and Compatibilizer Content Polymers haptic properties surface topography molded surface roughness mold insert roughness impression quality replication |
| title | The Relationship between a Defined Microstructure within the Mold Surface and the Corresponding Roughness on the Part: A Systematic Study on Particle Size, Filler-, and Compatibilizer Content |
| title_full | The Relationship between a Defined Microstructure within the Mold Surface and the Corresponding Roughness on the Part: A Systematic Study on Particle Size, Filler-, and Compatibilizer Content |
| title_fullStr | The Relationship between a Defined Microstructure within the Mold Surface and the Corresponding Roughness on the Part: A Systematic Study on Particle Size, Filler-, and Compatibilizer Content |
| title_full_unstemmed | The Relationship between a Defined Microstructure within the Mold Surface and the Corresponding Roughness on the Part: A Systematic Study on Particle Size, Filler-, and Compatibilizer Content |
| title_short | The Relationship between a Defined Microstructure within the Mold Surface and the Corresponding Roughness on the Part: A Systematic Study on Particle Size, Filler-, and Compatibilizer Content |
| title_sort | relationship between a defined microstructure within the mold surface and the corresponding roughness on the part a systematic study on particle size filler and compatibilizer content |
| topic | haptic properties surface topography molded surface roughness mold insert roughness impression quality replication |
| url | https://www.mdpi.com/2073-4360/13/16/2757 |
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