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Typical Defects of UV Resins on Difficult-to-Bond Substrates (Part 3)
Whitening or haze in coatings is a common defect in UV‑curable resin applications on difficult‑to‑adhere substrates, compromising optical performance. It manifests as reduced transparency in the cured film, resulting in a milky, whitish appearance. This issue is particularly critical in transparent coatings and optical applications, directly impacting both aesthetic quality and optical functionality. In coating systems applied to challenging substrates, the root causes of whitening share similarities with those observed in conventional UV resins; however, factors such as substrate surface treatment, the incorporation of adhesion promoters, and the use of modified resins introduce distinct nuances.
2026-10-08
Typical Defects of UV Resins on Difficult-to-Adhere Substrates (Part 2)
Curing shrinkage is an intrinsic property of UV‑curable resins during the polymerization process; however, on substrates with poor adhesion, the interfacial stresses generated by shrinkage are more likely to cause debonding. This issue is particularly pronounced on substrates such as polyesters, which are highly sensitive to shrinkage‑induced stresses. During curing, the coating undergoes volumetric contraction, and the resulting shrinkage stresses concentrate at the coating–substrate interface. When these stresses exceed the interfacial adhesion strength, the coating delaminates from the substrate. Understanding the mechanisms underlying this defect and the factors that influence it enables the implementation of targeted control measures in practical production.
2026-10-08
Typical Defects of UV Resins on Difficult-to-Bond Substrates (Part 1)
Insufficient adhesion is a typical defect in the application of UV‑curable resins to difficult-to-bond substrates, manifesting as coating delamination or lifting from the substrate surface. Although these resins are specifically formulated to address adhesion challenges on low‑surface‑energy plastics, substandard adhesion can still occur in practice due to various factors. This defect directly results in unacceptable product appearance and reduced reliability, making it a critical issue that requires close attention during the coating process.
2026-10-08
Video Account
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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