Electronics Forum: mechanical adhesive (Page 1 of 6)

Securing Large Inductors

Electronics Forum | Thu Feb 16 21:22:12 EST 2006 | davef

It is quite common for this to be done with an activator cured acrylic adhesive (eg, Dymax, Loctite, Permabond). This method took over from mechanical clips and epoxy some years ago because using: * Mechanical clips changes the magnetic circuit. * Ep

BGA chip corner epoxy / adhesive?

Electronics Forum | Thu Dec 07 03:21:54 EST 2006 | Guest

Materials you see are corner bond adhesive, main purpose of this is mechanical shock absorber , it promotes additional adhession to lessen stress to solder joints incase device subjected to mechanical stress like dropping.By function, corner bond

Thermocouple

Electronics Forum | Wed Mar 24 15:48:33 EST 2004 | davef

KIC Thermal Profiling did a DOE [Nepcon West 1999] [you probably can find it posted on their site] on thermocouple attach. Comparing the reliability and repeatability of thermocouple attachment methods: * High temperature solder was found to be the

Re: stencil epoxy debonding

Electronics Forum | Tue May 02 14:19:26 EDT 2000 | Bill Schreiber

There are two primary causes of epoxy adhesive bond failure, heat and over exposure to moisture. Ultrasonic cavitation is a only a mechanical "scrubbing" action on a microscopic level. However, if the adhesive bond is week or has small areas of det

Mix Technology Board Processes

Electronics Forum | Mon Apr 23 11:49:46 EDT 2007 | ck_the_flip

Wow, you're using the Surface Mount Adhesive for mechanical vibration? I've never heard of SMT adhesive being used for things other than holding the components in place before wave solder. Does it work for mechanical purposes? Glue/Wave is a proce

SMT Glue

Electronics Forum | Wed Oct 25 12:14:35 EDT 2006 | GS

Yes SWAG you are right, heat could be dangerous for the parts to be removed. Any way it is not so easy to remove epoxy adhesive (3609) once it is cured. By heating the adhesive (over his TG temperature)it gets softened and by using a mec

'Blue solder' residues

Electronics Forum | Thu Oct 28 11:41:21 EDT 2004 | Steve Stach

Hello Loz, Blue residues on circuit boards can be caused by copper corrosion, component body deterioration, marking permanently, and adhesive break down. In this case, a more subtle mechanism appears to be possible. This is a no clean application

Coating adhesion problems

Electronics Forum | Sat Sep 25 08:59:59 EDT 2004 | davef

IPC-HDBK-830, Guidelines for Design, Selection and Application of Conformal Coatings says: A conformal coating may have several functions depending on the type of application. The most common are: * Inhibit current leakage and short circuit due to h

Re: screen printer x axis

Electronics Forum | Fri Sep 17 15:20:52 EDT 1999 | Earl Moon

| HI everyone, | | We are using a Siemens ap-25 screen printer, in the past we have not had any problems with adhesive placement until a couple of weeks ago. It seems the x axis has decided that it should be set somewhere between .00085 and .001

SMD Adhesive Testing

Electronics Forum | Wed Dec 11 20:40:25 EST 2002 | davef

Se�or Tech Consider the following in evaluating your adhesive: * Determine the ability to dispense/print epoxy dots over the full range of application diameters/volumes. * Assess the ability to dispense/print epoxy without undesirable characteristic

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