Difference between revisions of "SEM Images"
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| − | + | I briefly joined a hackerspace in Lowell, MA which has an SEM. While I was there I got a chance to test out a few products under high magnification. I would love to do more of this, but unfortunately, I no longer have access to one, so for now this will be it. | |
| + | __TOC__ | ||
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| + | ==Initial SEM Images== | ||
===Hull and Deck Putty=== | ===Hull and Deck Putty=== | ||
{|class="wikitable" | {|class="wikitable" | ||
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| [[File:SEM_3210LVP3.jpg|100px|thumb||]] | | [[File:SEM_3210LVP3.jpg|100px|thumb||]] | ||
| − | | Here is the same sample but showing the glass underneath the top layer. Because the resin was | + | | Here is the same sample but showing the glass underneath the top layer. Because the resin was only applied over the top of the glass with a roller, and no heat or vacuum was used, the resin did not soak into the inner layers. |
| − | For best strength, the resin must soak to the inside. This can be resolved with (as mentioned) heating or vacuum. | + | For best strength, the resin must soak to the inside. This can be resolved with (as mentioned) heating or vacuum. Note that vacuum isn't necessary to 'degas' but only to pull the resin into the inside of the glass. |
Glass type: n/a | Glass type: n/a | ||
Latest revision as of 19:09, 21 June 2025
I briefly joined a hackerspace in Lowell, MA which has an SEM. While I was there I got a chance to test out a few products under high magnification. I would love to do more of this, but unfortunately, I no longer have access to one, so for now this will be it.
Initial SEM Images
Hull and Deck Putty
| Image | Comment | Zoom |
|---|---|---|
|
A polyester product with embedded glass. Note the left edge, which is a broken edge of the putty. You can see glass fibers sticking out. | 200x |
|
Area to zoom in. | |
|
Zoomed in area of previous picture. One strand of glass is visible. | 3000x |
Woven Roving
| Image | Comment | Zoom |
|---|---|---|
|
Threaded fiberglass. Has a checkerboard appearance. The dirt specks here may be from the glue used, or other dust. Sample should've been sprayed with air before putting under microscope. | 135x |
|
480x | |
|
1000x | |
|
3000x |
3210 LVP
| Image | Comment | Zoom |
|---|---|---|
|
Here is a surface of 3210 in woven roving. Cured at ambient temperatures (~20C). | 140x |
|
Here is the same sample but showing the glass underneath the top layer. Because the resin was only applied over the top of the glass with a roller, and no heat or vacuum was used, the resin did not soak into the inner layers.
For best strength, the resin must soak to the inside. This can be resolved with (as mentioned) heating or vacuum. Note that vacuum isn't necessary to 'degas' but only to pull the resin into the inside of the glass. Glass type: n/a Resin type: 3210LVP |
140x |
