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Home » Topics » Columns » Ask Dr. Dave

Ask Dr. Dave
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Dr. Dave
Ask Dr. Dave

What tips can you provide for bonding plastics and composites with adhesives?

Dave Dunn's November 2016 column.
Dunn95
Dave Dunn Ph.D.
November 3, 2016
No Comments
Adhesives are often a better way to assemble plastics than by using mechanical assembly with fasteners. For example, fiberglass composites are routinely bonded with epoxy or reactive acrylic adhesives in the automotive and marine industries because they give high strength and durable bonds.
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Dr. Dave
Ask Dr. Dave

Why use pressure-sensitive tape adhesives in the assembly of electronic devices?

Dave Dunn's October 2016 column.
Dunn95
Dave Dunn Ph.D.
October 3, 2016
No Comments
What are the pros and cons of using pressure-sensitive tape adhesives in place of liquid adhesives in the assembly of electronic devices?
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Dr. Dave
Ask Dr. Dave

What alternatives do I have for bonding to surfaces like polyethylene and polypropylene?

Dave Dunn's September 2016 column.
Dunn95
Dave Dunn Ph.D.
September 1, 2016
No Comments
What alternatives do I have for high-strength bonding to surfaces like polyethylene and polypropylene?
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Dr. Dave
Ask Dr. Dave

How should we prepare our surfaces for adhesive bonding?

Dave Dunn's August 2016 column.
Dunn95
Dave Dunn Ph.D.
August 1, 2016
No Comments
This is a very broad topic for this column. Adhesive bonding requires several choices to be made, such as type of adhesive, additives like adhesion promoters and surface preparation.
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Dr. Dave
Ask Dr. Dave

What options do we have for high-performance liquid gaskets?

The most common types of liquid gaskets are RTV silicones and anaerobics.
June 1, 2016
No Comments
Question: What options do we have for high-performance liquid gaskets these days?
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Dr. Dave
Ask Dr. Dave

Can you recommend a safe adhesive for bonding plastics?

With the correct choice of monomers, a UV-cured acrylic will give very strong bonds on these plastics and a crystal-clear bond line.
Dunn95
Dave Dunn Ph.D.
May 2, 2016
No Comments
Question: We bond interlocking polystyrene and ABS tubes together with a solvent-based cement. Can you recommend a less hazardous and safer adhesive? The plastics are clear.
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Dr. Dave
Ask Dr. Dave

Have there been any new adhesives for consumer or handyman use recently?

Innovative marketing has given us a couple of very interesting and useful products.
April 1, 2016
No Comments

Have there been any new adhesives for consumer or handyman use recently?


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Dr. Dave
Ask Dr. Dave

I am trying to understand how the organosilanes act chemically.

Organosilanes have been used for many years to enhance the durability of adhesive bonds, particularly to glass surfaces.
Dunn95
Dave Dunn Ph.D.
March 1, 2016
One Comment

Dave Dunn's March 2016 column.


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Dr. Dave
Ask Dr. Dave

How do I disassemble nuts and bolts that were assembled using anaerobic threadlockers, then re-use the fasteners?

Threadlockers are generally comprised of three common types.
Dunn95
Dave Dunn Ph.D.
February 1, 2016
One Comment
Dave Dunn's February 2016 column.
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Dr. Dave

Ask Dr. Dave: How can I tell if my adhesive has fully cured?

Maximum properties for epoxies are only achieved by curing at high temperatures for long periods of time to complete the reactions.
Dunn95
Dave Dunn Ph.D.
January 4, 2016
No Comments

Dave Dunn's January 2016 column.


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