Effects of mould wear on hydrophobic polymer surfaces replicated using plasma-treated and laser-textured stainless steel inserts

Romano, Jean–Michel; Sarasa, Jorge Fantova; Concheso, Carlos; Gülçür, Mert; Dashtbozorg, Behnam; García‐Girón, Antonio; Penchev, Pavel; Dong, Hanshan; Whiteside, Ben; Dimov, Stefan Simeonov

doi:10.1080/17515831.2020.1785234

Cited by 5 publications

(2 citation statements)

References 42 publications

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“…However, such processes are very energy-intensive, since cyclical operation requires a continuous energy input with simultaneous high waste heat during heating and cooling of the plasticizing unit and the injection mold [1]. As a result, the injection molding process in particular exhibits considerable efficiency weaknesses, which can be counteracted, e.g., by combining two manufacturing processes [2], by supporting intelligent optimization algorithms [3] or by using functional tool systems in the process [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of acoustic excitation on fiber-reinforced polypropylene and the influence on melt viscosity

Heinrich

Decker

Reindel

et al. 2021

Int J Adv Manuf Technol

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The paper describes a novel technological approach to influencing the rheological properties of thermoplastic materials exposed to acoustic energy. The flow behavior of polypropylene with different mass percentages of glass fibers is investigated in a parallel plate rheometer under high-frequency longitudinal excitation. The influence of oscillation frequency on the melt viscosity is explained by means of shear thinning criteria. The dependence of the oscillation shape using sinusoidal excitation on shear thinning as a function of different fiber reinforcement percentages is also investigated. A phenomenological view describes the mutually influencing parameters with regard to different material compositions and different excitation frequencies over the time course of the rheometric measurement. Interacting relationships are analyzed and discussed and the potential of the actuator system to influence the plastic melt is worked out. Based on this, a technological approach follows which describes the transfer of an oscillating mold surface to plastics processing methods, which, especially in the case of energy-intensive injection molding technology, leads to the expectation of possible resource efficiency in energy and material.

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Section: Introductionmentioning

confidence: 99%

Effect of acoustic excitation on fiber-reinforced polypropylene and the influence on melt viscosity

Heinrich

Decker

Reindel

et al. 2021

Int J Adv Manuf Technol

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“…In turn, laser-texturing methods, such as direct laser writing (DLW) and direct laser interference patterning (DLIP), are single-step processes that stand out for their potential for scalability toward industrial applications, while having a large flexibility and control on the microtexture shape and feature sizes. [20][21][22][23][24] In DLW, a single laser beam is focused and guided over a solid surface in order to remove or remelt material. For microtexturing, feature resolutions of 5-30 µm already have been reported.…”

mentioning

confidence: 99%

Spreading Behavior of Oil on Hierarchical Microstructured PET Surfaces Fabricated Using Hot‐Embossing Combined with Laser‐Based Methods

Bouchard

Soldera

Lasagni

2023

Adv Materials Inter

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In this study, the wetting behavior of microstructured polyethylene terephthalate (PET) foils for polar and nonpolar liquids produced by plate‐to‐plate hot embossing is investigated. For the embossing step, stainless steel plates are used as stamps, which are microstructured with single‐scaled and hierarchical textures using direct laser writing and two‐beam direct laser interference patterning. The imprinted microstructures, containing pillar‐ and line‐like textures, show increased water contact angles combined with a superoleophilic behavior. Time‐resolved measurements reveal that oil droplets spread rapidly on the hierarchical textures with velocities of up to 1.4 mm2 s−1. This functionalization of PET foils creates new opportunities for a wide range of industrial applications, such as the use of oil‐based instead of solvent‐based paints, an improved distribution of lubricants in mechanical components or for oil–water separation in maritime surroundings.

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Active-screen plasma surface multi-functionalisation of biopolymers and carbon-based materials – An overview

Dashtbozorg

Tao

Dong

2022

Surface and Coatings Technology

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Effects of mould wear on hydrophobic polymer surfaces replicated using plasma-treated and laser-textured stainless steel inserts

Cited by 5 publications

References 42 publications

Effect of acoustic excitation on fiber-reinforced polypropylene and the influence on melt viscosity

Effect of acoustic excitation on fiber-reinforced polypropylene and the influence on melt viscosity

Spreading Behavior of Oil on Hierarchical Microstructured PET Surfaces Fabricated Using Hot‐Embossing Combined with Laser‐Based Methods

Active-screen plasma surface multi-functionalisation of biopolymers and carbon-based materials – An overview

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