Development of low temperature curing, 120°C, durable, corrosion protection powder coatings for temperature sensitive substrates

Merfeld, G. D.; Mordhorst, Steve; Koeniger, Rainer; Acar, A. Ersin; Molaison, Chris; Suriano, Joe; Irwin, Pat; Warner, Ron Singh; Gray, Ken; Smith, Mark R.; Kovaleski, Kevin; Garrett, Greg; Finley, Steve; Meredith, Debora; Spicer, Mike; Naguy, Tom

doi:10.1007/bf02774595

Cited by 8 publications

(3 citation statements)

References 9 publications

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“…Low-temperature curing for heat-sensitive substrates is an emerging technology, and many questions about its different product performance need to be answered if we are aiming for the successful technological transfer from the numerous research works in academia. Among the new advancements, low-temperature curable novel UV powder coatings surely have the potential to be gamechangers [95]. Will these alternative materials have any negative impacts on the product's end performance?…”

Section: Future Perspectivesmentioning

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: Future Perspectivesmentioning

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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“…Interestingly, the required deblocking temperature (typically exceeding 120 °C) strongly depends on the nature of both the isocyanate, i.e., aliphatic vs aromatic, and the blocking agent and therefore allows for a judicious choice of the blocking system, with regard to the targeted temperature of application. 6,14,15 Triazolinediones (TADs) are another type of efficient coupling reagents, 16−18 with a very different and somehow complementary reactivity compared to isocyanates. Indeed, TADs are highly enabling synthetic tools in polymer science that exhibit a low-temperature reactivity toward isolated alkenes and conjugated dienes without the need of a catalyst (see Scheme 2a).…”

Section: ■ Introductionmentioning

confidence: 99%

“… − Heating of the blocked chemical in the presence of a suitable coreactant then results in the in situ deprotection or “deblocking” of the isocyanate, allowing for the cross-linking reaction to proceed. Interestingly, the required deblocking temperature (typically exceeding 120 °C) strongly depends on the nature of both the isocyanate, i.e., aliphatic vs aromatic, and the blocking agent and therefore allows for a judicious choice of the blocking system, with regard to the targeted temperature of application. ,, …”

Section: Introductionmentioning

confidence: 99%

Tunable Blocking Agents for Temperature-Controlled Triazolinedione-Based Cross-Linking Reactions

et al. 2018

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The remarkable reactivity of triazolinediones (TADs) toward olefin-type substrates marks them as highly attractive click reagents, in particular for polymer modification and cross-linking. Critically, their ultrafast reaction rates result in handling issues and a rather limited shelf life whereas a particular concern for polymer material applications is homogeneous network formation. Herein, we introduce 2-phenylindoles as highly promising blocking agents for TADs, giving bench-stable reagents at ambient temperature from which the initial TADs can be released upon heating. A set of 11 indoles with varying substitution patterns was synthesized, leading to a precise control for the temperature of deblocking within a broad range of 35–100 °C. The established indole–TAD platform was next applied to bivalent TAD reagents to enable on-demand TAD-based cross-linking reactions of a diene-containing polyurethane (M n = 12.5 kDa). Fine-tuning of the curing temperatures, down to 50 °C, was evidenced via rheological measurements.

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Evaluation of the Effects of Powder Coating Cure Temperatures on the Mechanical Properties of Aluminum Alloy Substrates

Maldonado

Diaz

Ranallo

et al. 2009

J. of Materi Eng and Perform

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The effects of curing temperature, based on new, low-temperature powder coating methods and traditional high-temperature powder coating methods, were studied. Heat-sensitive aluminum alloys (2024-T3, 6061-T6, and 7075-T6) were subjected to two different heat-treatment cycles, which were based on temperatures of 121 and 204°C. Findings indicate that although both cure temperatures achieved powder coatings adhesion and thickness appropriate for industrial uses, the high-temperature cure treatment negatively affected the mechanical properties.

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Development of low temperature curing, 120°C, durable, corrosion protection powder coatings for temperature sensitive substrates

Cited by 8 publications

References 9 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

Tunable Blocking Agents for Temperature-Controlled Triazolinedione-Based Cross-Linking Reactions

Evaluation of the Effects of Powder Coating Cure Temperatures on the Mechanical Properties of Aluminum Alloy Substrates

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