Diels-Alder modified self-healing melamine resin

Urdl, Katharina; Weiss, Stephanie; Christöfl, Petra; Kandelbauer, Andreas; Müller, Uwe; Kern, Wolfgang

doi:10.1016/j.eurpolymj.2020.109601

Cited by 33 publications

(16 citation statements)

References 36 publications

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“…Due to their excellent resistance against temperature, chemicals, hydrolysis and mechanical stress, MF resins have a broad range of industrial applications. The largest application area for MF glues is in the engineered wood manufacturing industry, where they are used as adhesives for gluing wood‐based panels like particleboards and for surface finishing of such panels via resin impregnated paper laminates 1–8 …”

Section: Introductionmentioning

confidence: 99%

Response surface optimization for improving the processing behavior of melamine formaldehyde impregnation resins

Seidl

Weiss

Zikulnig-Rusch

et al. 2020

J of Applied Polymer Sci

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Melamine‐formaldehyde resins are widely used for decorative paper impregnation. Resin properties relevant for impregnation are mainly determined already at the stage of resin synthesis by the applied reaction conditions. Thus, understanding the relationship between reaction conditions and technological properties is important. Response surface methodology based on orthogonal parameter level variations is the most suitable tool to identify and quantify factor effects and deduce causal correlation patterns. Here, two major process factors of MF resin synthesis were systematically varied using such a statistical experimental design. To arrive at resins having a broad range of technological properties, initial pH and M:F ratio were varied in a wide range (pH: 7.9–12.1; M:F ratio: 1:1.5–1:4.5). The impregnation behavior of the resins was modeled using viscosity, penetration rate and residual curing capacity as technological responses. Based on the response surface models, nonlinear and synergistic action of process factors was quantified and a suitable process window for preparing resins with favorable impregnation performance was defined. It was found that low M:F ratios (~1:2–1:2.5) and comparatively high starting pHs (~pH 11) yield impregnation resins with rapid impregnation behavior and good residual curing capacity.

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Section: Introductionmentioning

confidence: 99%

Response surface optimization for improving the processing behavior of melamine formaldehyde impregnation resins

Seidl

Weiss

Zikulnig-Rusch

et al. 2020

J of Applied Polymer Sci

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“… Description of data collection The cured MF-resin able to undergo self-healing due to Diels Alder functional groups was prepared as described in Urdl et al. 2020 [1] . The cured resin films were analyzed with DL-TMA and nanoindentation in order to characterize the mechanical performance of the MF resin when subjected to several self-healing cycles.…”

Section: Specifications Tablementioning

confidence: 99%

“…Shrinkage indicates irreversible chemical reaction. A detailed discussion of the thermoanalytical data is found in [1] From the nanoindenter profiles it is seen that the samples become increasingly stiffer as the number of self-healing cycles increases (i.e. the E modulus increases).…”

Section: Value Of the Datamentioning

confidence: 99%

“…Shrinkage indicates irreversible chemical reaction. A detailed discussion of the thermoanalytical data is found in [1] …”

Section: Value Of the Datamentioning

confidence: 99%

“…The data provide supplemental material to the manuscript published by Urdl et al. 2020 ( http://doi.org/10.1016/j.eurpolymj.2020.109601 , [1] ) on the self-healing performance of this resin, where a more thorough discussion on the preparation, the properties of this coating material and its application in impregnated paper-based decorative laminates can be found [1] .…”

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Thermomechanical and microhardness data of melamine-formaldehyde-based self-healing resin film able to undergo reversible crosslinking via Diels-Alder reaction

et al. 2020

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The data presented in this article characterize the thermomechanical and microhardness properties of a novel melamine-formaldehyde resin (MF) intended for the use as a self-healing surface coating. The investigated MF resin is able to undergo reversible crosslinking via Diels Alder reactive groups. The microhardness data were obtained from nanoindentation measurements performed on solid resin film samples at different stages of the self-healing cycle. Thermomechanical analysis was performed under dynamic load conditions. The data provide supplemental material to the manuscript published by Urdl et al. 2020 ( http://doi.org/10.1016/j.eurpolymj.2020.109601 , [1] ) on the self-healing performance of this resin, where a more thorough discussion on the preparation, the properties of this coating material and its application in impregnated paper-based decorative laminates can be found [1] .

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Fabrication of self‐healable thermoplastic polyurethane by masterbatch technology

Dasgupta

Basak

Sengupta

et al. 2021

J of Applied Polymer Sci

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This paper reports development of self-healable thermoplastic polyurethane (TPU) compound through the mixing of masterbatches of TPU and EVA (poly [ethylene-co-vinyl acetate]) (EVA) having various mole compositions. The aim was to promote a limited chemical interaction between TPU and EVA in the pristine compound that can enhance viscoelastic flow across the cut surface for autonomic healing. The healing was externally stimulated through microwave irradiation and the healing efficiency was determined from changes in tensile properties and complemented by image analysis. Infrared spectroscopy was used to detect TPU-EVA crosslinking in the TPU compound, which was further delineated from viscoelastic and swelling results. Tensile properties demonstrated a drop in tensile modulus, strength, and elongation at break than original TPU on increasing EVA concentration, but those, at the same time, were retained until the fifth healing cycles with higher EVA concentration in the masterbatch. The healing mechanism was attributed to the destruction of the hard domain in TPU leading to a marked increase in viscoelastic mobility at the interface of the cut section. The pristine TPU modified with higher amount of EVA in the masterbatch exhibited the highest range of healing efficiency (sample CC0-93%, sample BB0-97%, respectively)), reinstated the hypothesis of mixing a higher amount of EVA to promote autonomic healing. EVA based TPU compounds with superior self-healing property makes them an ideal candidate for applications in cable insulation and shape-memory devices.

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Diels-Alder modified self-healing melamine resin

Cited by 33 publications

References 36 publications

Response surface optimization for improving the processing behavior of melamine formaldehyde impregnation resins

Response surface optimization for improving the processing behavior of melamine formaldehyde impregnation resins

Thermomechanical and microhardness data of melamine-formaldehyde-based self-healing resin film able to undergo reversible crosslinking via Diels-Alder reaction

Fabrication of self‐healable thermoplastic polyurethane by masterbatch technology

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