Study of scratch resistance of a hard-on-soft polymer bilayer: Combination of in situ vision, X-ray tomography and numerical simulations

Wittmann, Benoît; Gauthier, Christian; Burr, Alain; Agassant, Jean‐François; Favier, Damien; Montmitonnet, Pierre; Casoli, Alain

doi:10.1016/j.wear.2020.203271

Cited by 6 publications

(4 citation statements)

References 26 publications

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“…The purpose of an HC in general is to increase the hardness and scratch resistance via a hard coat layer over the substrate surface. An HC can involve an organic oxide, epoxy resin, polyurethane silicone, or polyacrylate, showing plastic deformation on scratches [64][65][66]. Xu et al reported a study wherein UV-cured acrylates were used as a hard coating for a PMMA/PC substrate, and the properties were tested using the pencil hardness test and progressive normal scratch test [67].…”

Section: Overview Of Coatings For Pc Substratesmentioning

confidence: 99%

A Comprehensive Outlook of Scope within Exterior Automotive Plastic Substrates and Its Coatings

Thomas,

Patil,

John

et al. 2023

Coatings

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Among non-metal substrate coatings, plastic substrates have certainly asserted themselves as a key market, especially in the automotive industry. The substrates within exterior automotive industries are being diversified and commercialized at a rapid pace. Mainly attributed to the emergence of electric vehicles, environmental regulations, and functional requirements, there is huge scope and many opportunities for advancements and groundbreaking technologies. The above factors have led to the dawn of new and improved coating materials within the revolutionizing new substrate market. At the same time, new product innovations within ultraviolet (UV)-curable technologies, powder coating, nanotechnologies, and several other platforms have brought the possibility of novel coating systems into the picture. This review outlines the inherent challenges, the progress made thus far, and the future opportunities of two significant exterior plastic substrates: thermoplastic polyolefin (TPO) and polycarbonate (PC). While the former serves as the historical choice for plastic bumpers across the globe, the latter has captured the most research attention in recent times as a lightweight option against glass coatings. A meticulous overview of the existing literature was conducted to summarize the recent approaches with a few critical analyses. To surpass the challenges to the equivalent performances, a few of the most promising research studies were also examined, including the sustainability aspect.

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Section: Overview Of Coatings For Pc Substratesmentioning

confidence: 99%

A Comprehensive Outlook of Scope within Exterior Automotive Plastic Substrates and Its Coatings

Thomas,

Patil,

John

et al. 2023

Coatings

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“…The in situ tribometer (shown in Figure 5) employed in these investigations is an in-house development and has already been described several times in detail by Gauthier et al [42,43]. For this present optical path, the measurement principle consists of using a glass hemisphere with a diameter of 25.8 mm (Borosilicate BK7 precision lenses, Newport ® , Irvine, CA, USA), generating the contact with the structures, and, by means of a mirror placed above the glass hemisphere, the contact formation can be inspected in situ by a CCD sensor at the end of the optical path.…”

Section: In Situ Tribometermentioning

confidence: 99%

“…The concept used in this paper to determine the area of real contact A R is based on employing the generated contrast between the glass hemisphere and the polymeric surface via the optical setup, as described in Figure 5 and by Gauthier et al [42,43]. When structures become in contact with the glass hemisphere, the contrast decreases and allows more light penetration into the CCD sensor.…”

Section: Area Of Real Contact Calculationsmentioning

confidence: 99%

In Situ Observation of Micro-Patterned Elastomeric Surfaces: The Formation of the Area of Real Contact and the Influence on Its Friction and Deformation Behaviour

Hausberger,

Pecora,

Favier

et al. 2023

Materials

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Structured surfaces, which are the basis of the lotus blossom effect, have great potential to serve/operate as functionalised surfaces, i.e., surfaces with specific and/or adjustable properties. In the present study, the aim is to use micro-structured elastomeric surfaces to specifically influence the friction and deformation behaviours on the basis of the shape and arrangement of the structures. Thiol-acrylate-based photopolymers patterned via nanoimprint lithography were investigated by using an in situ tribological measurement set-up. A clear influence of the different structures on the surface’s friction behaviour could be shown, and, furthermore, this could be brought into relation with the real area of contact. This finding provides an important contribution to further development steps, namely, to give the structures switchable properties in order to enable the control of friction properties in a targeted manner.

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“…These PVC flooring materials are coated with a thin polyurethane layer which aim is to improve the tribological properties of the material, as shown by Wittmann et al [34]. However, as this coating constitutes the top layer of the material, it governs its gloss too.…”

Section: Introductionmentioning

confidence: 99%

BRDF and gloss computation of polyurethane coatings from roughness measurements: Modelling and experimental validation

Wittmann

Montmitonnet

Burr

et al. 2021

Progress in Organic Coatings

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Study of scratch resistance of a hard-on-soft polymer bilayer: Combination of in situ vision, X-ray tomography and numerical simulations

Cited by 6 publications

References 26 publications

A Comprehensive Outlook of Scope within Exterior Automotive Plastic Substrates and Its Coatings

A Comprehensive Outlook of Scope within Exterior Automotive Plastic Substrates and Its Coatings

In Situ Observation of Micro-Patterned Elastomeric Surfaces: The Formation of the Area of Real Contact and the Influence on Its Friction and Deformation Behaviour

BRDF and gloss computation of polyurethane coatings from roughness measurements: Modelling and experimental validation

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