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  • Medical Device Link .
    adhesive selection and/or the use of an accelerator. Another solution involves the use of adhesives based on cyanoacrylate alkoxy ester monomers, which because of their higher molecular weight are less volatile than standard ethyl and methyl cyanoacrylates (Figure 1). Consequently, they do not have
  • Medical Device Link .
    applications, however, the adhesive can migrate into shadowed areas where it does not cure. To prevent this, manufacturers may use a traditional cyanoacrylate adhesive in conjunction with an accelerator to speed the cure. The problem that arises, according to Salerni, is that the accelerator creates
  • Finding just the right adhesive
    be light cured while the adhesives in the joint cures without the need for accelerators. Cyanoacrylate and light-curing acrylic adhesives play important roles in assembling a variety of devices. They offer designers significant manufacturing benefits, including rapid processing that is easily
  • Medical Device Link .
    evaluations (intracutaneous injection, systemic injection, and muscle implantation) and cytotoxicity and hemocompatibility tests. Because they are based on cyanoacrylate chemistry, UVCAs offer high bond strength to a wide variety of substrates. This combination of high bond performance, complete cure
  • Stick With the Right Adhesive
    rapidly in low humidity. So-called "surface insensitive " cyanoacrylates also hasten cure in low humidity as well as on acidic surfaces. And special low-blooming types minimize white haze (blooming or frosting) around bond lines. Early cyanoacrylate adhesives weren't noted for having good bond strength
  • Medical Device Link . Adhesive Bonding of Medical Plastics: An Overview
    and accelerator technology. Accelerators speed the cure of cyanoacrylate adhesives and are used to reduce cure and fixture times and to cure fillets on bond lines. Accelerators consist of an active ingredient dispersed in a solvent. The accelerator is typically applied to a substrate surface prior
  • Medical Device Link .
    decreased fixture times. Toughened cyanoacrylate formulations are available in both black and clear versions. Besides advancements in ethyl cyanoacrylate technology, there have also been significant developments in primer and accelerator formulations that not only offer speed of cure but also the ability
  • Medical Device Link . Advances in Joining Methods
    of substrates. These materials do have their limitations, however. Fillet cures can be slow unless a solvent-borne accelerator is used, notes Loctite application engineering chemist Christine M. Salerni. Cyanoacrylates are also prone to blooming, a white residue that results when the cyanoacrylate monomer