Ask Dr. Dave

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QUESTION: The adhesives we use are now available from more than one supplier. How can we feel comfortable when changing to a new supplier?

QUESTION: We are successfully structurally bonding Belgian Blue Stone—also called Petit Granit (a non-porous limestone material)—with a two-component epoxy in an industrial process.

QUESTION: We would like to get some of our sealants approved for drinking water applications. How can we do this?

QUESTION: We are looking for adhesives with high electrical conductivity for several assembly operations. What alternatives do we have?

QUESTION: We use a UV adhesive/coating for assembling the plastic and metal components of a complex medical device. We need to optimize our curing process and ensure that the adhesive is fully cured with maximum properties. What are the most important factors?

We are formulating acrylic adhesives (both reactive acrylics and anaerobics), but are having problems with the sourcing of monomers. Some suppliers can’t seem to give us monomers that produce shelf-stable products, even though they purport to have added extra free-radical stabilizers. Can you offer some advice?

QUESTION: In the manufacturing world, the recycling of materials and the use of “green” materials are popular trends that are increasingly coming under legislative pressures. What about the recycling of adhesives and sustainability in the adhesives industry?

QUESTION: We have a lab freezer that goes down to -32°C, and the seals are torn and need replaced. What do you recommend?

QUESTION: We have been advised to use an organosilane adhesion promoter in an acrylic adhesive to bond glass to metal.

QUESTION: We are attempting to bond and seal a small steel casting onto a steel plate.