 Nadine Blaesing Dymax Corp. Market Segment Manager Visit Website |
Nadine Blaesing is the market segment manager, Europe, for Dymax. She has more than 12 years of experience selling adhesives and providing technical assistance to the medical device market. Although she began her career as an applications engineer in Europe, and later in the United States, Blaesing eventually transitioned into marketing while keeping her focus on the medical device industry. Dymax specializes in the manufacture of light-curable adhesives, cyanoacrylates, epoxies, light-emitting curing equipment, and dispensing systems.
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Adhesives and Epoxies Q&A
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I’m looking for a UV-fixating glue to bond a steel cannula onto a polypropylene hub. The hub will be plasma or corona treated prior to gluing to increase the bonding performance, and the hub will have annular rings as well. But since the material is opaque, I assume the glue has to have a secondary curing mechanism as well. In addition, the fixation time for bonding needs to be <10 seconds. Could you please advise which of your glues could be suitable?Answered December 17th, 2010 by Expert:On occasion, full cure via UV/visible light can be achieved using opaque polypropylene hubs. Depending on the color and thickness of the polypropylene, some light from the side can transmit through the plastic and polymerize the UV/visible adhesive.
The largest portion of the adhesive is usually cured from the top. However, due to limitations in the depth of cure of most UV/visible adhesives, I would recommend keeping the length/depth of the bond joint to a minimum and molding the annular rings near the top of the hub. Suitable UV/visible light–curable products include Dymax 1180-M-SV04 and 1-20777, which are medium viscosity and will not flow deep into the hub. Low-viscosity products such as Dymax 1161-M or 1162-M can be used if the design of the bond joint prevents these materials from flowing too deeply into the hub.
In order to achieve short curing times, I would recommend using a high-intensity UV lamp such as Fusion F300, which is a focused-beam lamp, or Dymax Blue Wave 200, which is a spot lamp that can be equipped with multiwand light guides.