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How to Address Defects in UV Resins on Difficult-to-Bond Substrates (Part 1)
The original design intent of UV‑curable resins for difficult‑to‑adhere substrates was to address adhesion challenges on low‑surface‑energy plastics; however, in actual production, inadequate adhesion can still occur due to various factors. Insufficient adhesion manifests as coating delamination or lifting from the substrate surface, directly impacting product appearance pass rates and reliability. To remedy this issue, a systematic investigation is required from both formulation design and process‑control perspectives, ensuring a strong and durable bond between the coating and the substrate.
2026-10-10
Typical Defects of UV Resins on Difficult-to-Bond Substrates (Part 8)
Limited weather resistance is a typical drawback of UV‑curable resins on difficult-to-bond substrates when used outdoors, manifesting as coating degradation under UV exposure and temperature fluctuations—resulting in yellowing, loss of gloss, chalking, or reduced adhesion. This issue is particularly critical in applications requiring long-term outdoor service, directly impacting the coating’s ability to maintain its appearance and its protective performance. Due to the incorporation of adhesion promoters and modified resin components, the weatherability of UV‑curable resins for challenging substrates differs from that of conventional UV resins, necessitating systematic analysis and tailored mitigation strategies.
2026-10-10
Typical Defects of UV Resins on Difficult-to-Bond Substrates (Part 7)
Insufficient adhesion durability is a typical defect that can emerge in UV‑curable resins applied to difficult‑to‑bond substrates over prolonged service. It manifests as acceptable initial adhesion scores, followed by a marked decline after exposure to thermal cycling, humidity, or aging tests. This issue is particularly critical in applications such as automotive interiors and appliance panels, where long‑term performance is essential, directly impacting the service life and reliability of the coating system. Because these resins rely on adhesion promoters and modifying additives to achieve initial adhesion, their interfacial bonding mechanisms exhibit different stability under long‑term environmental conditions compared with conventional UV‑curable resins, necessitating systematic analysis and targeted mitigation strategies.
2026-10-10
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Bossin cordially invites you to visit the 2025 China International Coatings Exhibition.
UV monomer with a curing speed more than 30% faster than that of trifunctional monomers
Low-irritation version of HDDA
A high-refractive-index UV monomer
Although it’s quite ordinary, it offers great value for the price.
A UV monomer used in fields such as PCB ink, UV curing agents, and offset printing ink.
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