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| Are there inject-able epoxy for injecting into electronic devices? |
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| engineheat:
--- Quote from: reboots on June 26, 2019, 02:54:24 pm ---I have had very good results with 3M DP-270 clear epoxy. It's an injectable 2-part epoxy with very low viscosity and long working time. It cures clear and very hard. Unfortunately it's somewhat expensive. I use DP-270 to pot electronic sensor assemblies in machined polycarbonate rods. The rods have drilled channels to transfer epoxy to each sensor pocket, and I use a single injection point to flow epoxy throughout the assembly. You will ideally have gravity on your side, injecting from the lowest point and letting air escape from the top to minimize bubbles. https://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-Scotch-Weld-Epoxy-Potting-Compound-DP270/?N=5002385+3293242430&rt=rud Available from McMaster-Carr: https://www.mcmaster.com/7467a274-7467A17 Requires dispensing gun: https://www.mcmaster.com/7467A41 And mixer nozzle: https://www.mcmaster.com/7467A12 If the 3M epoxy is out of your budget, MG Chemicals 832WC is a bulk electronics potting epoxy which appears to have good characteristics. I have not tried it myself. You would need to devise your own injection method, perhaps a plastic syringe. https://www.mgchemicals.com/products/potting-compounds/epoxy-potting-compounds/832wc-epoxy-encapsulating-potting-compound --- End quote --- This is for work. I tried buying the 832WC but my company won't let me due to a need for respirator according to the Material Safety Data Sheet. My employer is super big on health and safety. Same for the 3M one. Any other alternatives? This might sound ridiculous but would clear Elmer's glue work? I wonder if it can even dry completely into a solid. Or maybe JB Weld? But that might be too thick and solidifies too quickly, not to mention having to mix it. |
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