Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




1144 posts

Uber Geek
+1 received by user: 260


# 208080 25-Jan-2017 22:51
Send private message

Looking for your advice re: what is the name / brand for stuff I need to buy:

 

- compound / epoxy resin or something like that to seal electronic device to withstand vibration?

 

We've made regulator - rectifier for SUZUKI motorbike ourselves. Now need to seal all components as a mono-block so that vibration does not ruin it.

 

Obviously it needs to be non-conductive, water resistant and fast drying - something like Epoxy Resin (two component).

 

I never bought anything like that in NZ do not even know what would you call it here... Please advise


View this topic in a long page with up to 500 replies per page Create new topic
 1 | 2
3344 posts

Uber Geek
+1 received by user: 1089

Trusted
Vocus

  # 1709681 25-Jan-2017 22:53
Send private message

Two part epoxy resin is what we'd call it here.  You should be able to find it fairly easily.

 

for example : http://www.gemco.net.nz/resins/4-163-GEMCOAT-PR-2-1

 

 


475 posts

Ultimate Geek
+1 received by user: 177

Subscriber

  # 1709687 25-Jan-2017 23:03
Send private message

20 years ago we called this Potting.

 

Use to do a bit of it when building electronic bits for factory machinery. But that was a long time ago now :)

 

Can't remember what we used or where the boss got it from. sorry


 
 
 
 




1144 posts

Uber Geek
+1 received by user: 260


  # 1709689 25-Jan-2017 23:05
Send private message

ubergeeknz:

 

Two part epoxy resin is what we'd call it here.  You should be able to find it fairly easily.

 

for example : http://www.gemco.net.nz/resins/4-163-GEMCOAT-PR-2-1

 

 

Cool, looks like it: "Epoxy potting resin for electrical components". Have anyone seen that stuff in a smaller container? (76$ for 1.5L is excess of requirements and out of budget). Need just ~1/2 of the glass - e.g. ~100ml.


475 posts

Ultimate Geek
+1 received by user: 177

Subscriber

  # 1709692 25-Jan-2017 23:08
One person supports this post
Send private message
541 posts

Ultimate Geek
+1 received by user: 126

Subscriber

  # 1709698 25-Jan-2017 23:25
Send private message

RS also stock the stuff and have stock in NZ not sure how long it would take with element14 as all there stuff comes from aus and most of it is marked as Hazardous

 

http://nz.rs-online.com/web/c/adhesives-sealants-tapes/adhesives-glues/potting-compounds/?sra=p 

 

 





Geoff E

48 posts

Geek
+1 received by user: 10


  # 1709701 25-Jan-2017 23:29
Send private message

Have used a bit of epoxy in my time.

 

Epoxy Resin/ Hardener needs to be measured fairly accurately and sets very hard. (Epoxy is not that cheap either) Most epoxies do not have much structural strength above 60deg/c. (probably not needed)

 

Epoxy is quite fluid without some kind of filler powder and may exotherm (cook itself) with a quicker setting mix if put on too thickly. Sets quite hard and brittle

 

I'm sure some kind of potting mix is what you are after. Can you use just a basic silicone sealer? such as a tube of say Selleys all-clear? from Bunnings? cheap, handles heat and can be removed.

 

You could try calling "Adhesive Technologies" in Henderson. They manufacture a lot of resin products and are quite helpfull


3344 posts

Uber Geek
+1 received by user: 1089

Trusted
Vocus

  # 1709702 25-Jan-2017 23:33
Send private message

It's a good point. For a small job like that you could probably get away with a one-part urethane compound in a tube, just squeeze in a layer 2cm or so, let it set, pour in some more, etc

 

might work out easier and cheaper

 

something like: http://www.wyatt.co.nz/shop/REPAIR/ADHESIVES+%26+SEALERS/Pro+Form+Urethane+Sealer+Adhesive.html

 

http://www.supercheapauto.co.nz/Product/Sikaflex-Adhesive-227-150mL/284175

 

 


 
 
 
 


475 posts

Ultimate Geek
+1 received by user: 177

Subscriber

  # 1709706 26-Jan-2017 00:08
Send private message

What ever you end up using, you will have to make sure it is non conductive, and can handle the heat given off by the electronics and / or the environment it is installed in.

 

If the compound you use can't conduct heat, you risk the electronic components over heating as they will no longer have any cooling air around them. Even components that don't normally get warm can get hot once they are insulated.

 

 

 

 


mdf

2230 posts

Uber Geek
+1 received by user: 686

Trusted
Subscriber

  # 1709750 26-Jan-2017 08:36
Send private message

@mcraenz has some posts about using epoxy/resin on his (very cool) blog




1144 posts

Uber Geek
+1 received by user: 260


  # 1710280 26-Jan-2017 20:32
Send private message

Thanks guys for your feedback.

 

Here is big question: got from someone this epoxy today (they know nothing about it as it was left in the garage from previous owner).

 

Resin canister says mix 100 to 25 (4:1); But Hardener canister says 100 to 50 (2:1).

 

What do you think I should use 4:1 or 2:1?

 


231 posts

Master Geek
+1 received by user: 71

Lifetime subscriber

  # 1710293 26-Jan-2017 21:10
Send private message

I would visit an electrical wholesaler. There are a number of products designed for sealing electrical components.

neb

1009 posts

Uber Geek
+1 received by user: 216

Lifetime subscriber

  # 1710366 26-Jan-2017 23:46
Send private message

RUKI:

Cool, looks like it: "Epoxy potting resin for electrical components". Have anyone seen that stuff in a smaller container? (76$ for 1.5L is excess of requirements and out of budget). Need just ~1/2 of the glass - e.g. ~100ml.

 

 

Epoxy potting compound only comes at one price point, which is "freaking expensive". If you want to cut corners, have you looked at urethane foam? Most marine and automotive places should have that, and it's relatively cheap.

neb

1009 posts

Uber Geek
+1 received by user: 216

Lifetime subscriber

  # 1710368 26-Jan-2017 23:48
Send private message

RUKI:

Here is big question: got from someone this epoxy today (they know nothing about it as it was left in the garage from previous owner).

 

 

First thing to do is find out how old it is. This stuff degrades over time, so if you use very old resin + hardener you may get something that never hardens, or turns into a gooey mess, or whatever. I'd first try a small sample to see if it'll still harden, and if so what state it ends up in.

4431 posts

Uber Geek
+1 received by user: 1356
Inactive user


  # 1710384 27-Jan-2017 00:52
Send private message

Go 2:1 but test it first... keep an eye on its temp as it hardens.

 

 


22157 posts

Uber Geek
+1 received by user: 4729

Trusted
Subscriber

  # 1710413 27-Jan-2017 07:57
Send private message

They are 2 different products, so no guarantee that they will even react enough to harden totally at all. Or not over react and get so hot that they crack like crazy when making a thick block of resin.





Richard rich.ms

 1 | 2
View this topic in a long page with up to 500 replies per page Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

New Zealand PC Market declines on the back of high channel inventory, IDC reports
Posted 18-Jun-2019 17:35


Air New Zealand uses drones to inspect aircraft
Posted 17-Jun-2019 15:39


TCL Electronics launches its first-ever 8K TV
Posted 17-Jun-2019 15:18


E-scooter share scheme launches in Wellington
Posted 17-Jun-2019 12:34


Anyone can broadcast with Kordia Pop Up TV
Posted 13-Jun-2019 10:51


Volvo and Uber present production vehicle ready for self-driving
Posted 13-Jun-2019 10:47


100,000 customers connected to fibre broadband network through Enable
Posted 13-Jun-2019 10:35


5G uptake even faster than expected
Posted 12-Jun-2019 10:01


Xbox showcases 60 anticipated games
Posted 10-Jun-2019 20:24


Trend Micro Turns Public Hotspots into Secure Networks with WiFi Protection for Mobile Devices
Posted 5-Jun-2019 13:24


Bold UK spinoff for beauty software company Flossie
Posted 2-Jun-2019 14:10


Amazon Introduces Echo Show 5
Posted 1-Jun-2019 15:32


Epson launches new 4K Pro-UHD projector technology
Posted 1-Jun-2019 15:26


Lenovo and Qualcomm unveil first 5G PC called Project Limitless
Posted 28-May-2019 20:23


Intel introduces new 10th Gen Intel Core Processors and Project Athena
Posted 28-May-2019 19:28



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.