I do understand that ice building up in the cell structure could create blockage, but the period of time that the stopper would be needed in my application is less than an hour so there would be time in between runs to thaw. Supposing this is possible, it would seem that you’d have better insulation, less spillage if the flask falls over, and the ability to vent as the ln2 evaporates, preventing a nasty little catastrophe. Given it’s open cell structure and superior mechanical strength, I would think that it would make an excellent insulating stopper that could be threaded. I just purchased one of the airloy samples, and while my initial use for it was simply as insulation, I wondered if the material could be used as a stopper for a small liquid nitrogen flask. ![]() Love the site, staff and discussions that make up this place. Hey Aer-Heads (nickname usage rights reserved… Well not really, but compensation is always appreciated), Allow to dry (the sample looks white but is very fragile haven’t tested the insulative properties of the samples since I only get about a 1 inch sample each time)Īny thoughts? Do you think what I’m making is actually aerogel/xerogel or what have you? I’ve tried substituting a 5% acetic acid solution (white vinegar) instead of cream of tartar and it works as well. Repeat process of adding methanol and allowing to evaporate (solvent exchange).Ħ. Stir mixture until a gel forms (looks slightly blue but clear in coloration)ĥ. Add cream of tartar (tartaric acid) from grocery storeģ. Pipette sodium silicate solution and water into a well ( )Ģ. My objective is to make something that will have great insulation properties but not cost a lot to make. So far, I’ve made samples but am not sure if I’m actually creating aerogel. Hello! I’m attempting to make subcritical silica aerogel at home using items available to the average consumer. Have a checklist and follow procedures carefully to help with the last one. Buying a plexiglass shield will protect against leaks or solvent spraying out, but in general the failure mode of the vessel is probably a leaky seal, an internal pressure gage rupture (which results in a non-explosive depressurization of the vessel), or operator error. A welded design will help manage leaks better. Keeping a clean workspace free of solvent spills and vapors is also good, and make sure to wear splash goggles or safety glasses when using. ![]() Remember that the pressure vessel is rated to 3000 psi and you will only be operating as high as 1500 psi so you have a 100% safety factor. ![]() You can chain or clamp the vessel to a rigid structure for added stability. I would say building a sturdy frame is very important, and make sure to get valves with stiff handles for safe opening.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |