Potassium silicate water glass high temp refractory Binder

[@neffk]

I've seen a guy make crucibles out of sodium silicate and silicon carbide grit. Didn't explain what was happening but he fired them in 2 stages in a microwave oven in a kaowool blanket. I assumed it was some kind of sintering process but now I wonder if it was just the sodium silicate holding it all together. Shake the Future is the name of the channel, if you're interested.

[@NOBOX7]

@1:53 i mispoke , its an exothermic reaction not endothermic

[@Iraqi1995-3]

كل تحياتي لك اخوك من العراق انا مهوس في تجارب الحياة ولديه كثير من تجارب ولكن تجاربك في قناتك افضل بكثير شكرا لك اخي ❤

[@NOBOX7]

I am happy to see i have viewer's from your area , we in America hate our government so dont be confused we are a conquered nation .

[@joshuadelisle]

Very interested in the welding backer. You might be on to something big there if there is no cross contamination. Cheers J

[@NOBOX7]

Video coming up on that , it works but the trick is to develop a formula that dries fast so im working with alcohol and maybe acetone solvents for a quick dry action . Doing this i discovered another material with exceptional properties as it turns out alcohol reacts with water glass to form a polymer

[@joshuadelisle]

@@NOBOX7 fantastic, well done. Absolutely love your content. Cheers J

[@joshuadelisle]

@@NOBOX7 ps what would you recommend to coat ceramic fibre wool (kaowool) for an insulated wood burner for pyrolysis? Cheers J

[@NOBOX7]

@@joshuadelisle Aluminum silicates are great for that .

[@joshuadelisle]

@@NOBOX7 I have aluminum oxide and I was thinking of mixing sodium silicate into it to make the paste for it after I've put a Ridgidiser on it. Do you think that's a solution? Or would you recommend Aluminum silicate instead?

[@rickstav9024]

Love your channel mate ❤ i have learned so much fom you

[@otilium7503]

That is very awesome, thank you.

[@joshuahansen5486]

What if you crushed up a fire brick and used that as the sand that you make the cast out of

[@KOTYAR0]

Awesome stuff

[@hunnybunnysheavymetalmusic6542]

Aluminum, zirconium, and cerium are your best stable ash products for refractory ceramics.

[@waynoswaynos]

@NOBOX7 hey my friend, with Sodium or Potassium Silicate, when you make it stronger so that the white precipitate forms, its not a bad thing at all. The clear liquid above is a saturated solution. When you pour that off and use it, then add hot water the remaining material, more of it will dissolve. Because your water was hot, the new solution will be supersaturated. When it cools, some will crystalise and the remaining liquid will again be saturated. Which in my opinion is better. When a little of the salt remains, at least I know without measuring the density, that the stuff I am pouring off to use is at the saturated strength. If cold water is used it will become saturated soon enough. But starting with hot and waiting for it to cool is guaranteed.

[@haydenc2742]

I wonder if you could use powdered clay like the stuff they use in slip for porcelain and make a ceramic coating that will melt and then solidify when cool like a ceramic coat...can you get titanium powder to mix in with it? Very cool stuff...seems like it's a pretty hard finish..I wonder if heavily roughing up the surface would help it stick better Keep em coming!!!!

[@NOBOX7]

Yes surface prep is a big deal but in this phase of testing im looking at compounds that stick like paint . If they stick well on dirty or smooth then a good surface should perform even better . Yes i have bin looking into pottery and slips alot lately . Im just now learning what it takes to make a good glaze . I dont have funds to buy the materials i need for this testing so im making due

[@dingodog5677]

Is it better than sodium silicate e.g. higher melting temp.

[@mikesproject4704]

that stuff looks good.. i will try it

[@josemanon6295]

I love fire, but interesting its enemies: the refractory stuff😂

[@WesternIronwoks]

So I shouldnt make firebricks out of water glass and garden lime? What should i make fire bricks out of with water glass since i ordered a gallon of it and i wanna make a heat treating oven for stainless steel sheet metal parts.

[@NOBOX7]

dont use garden lime , it reacts with moisture after being calcined

[@WesternIronwoks]

@@NOBOX7 what would be good for a strong firebrick,concrete and some sand?

[@samuelgarcia2510]

​@@WesternIronwoksclay

[@squiqwarsquidwar7888]

It damn near boils itself off during the raction. Make sure not to touch the container used for reacting sio2 and koh. If you want to occasionally swirl the jar or flask during salt formation to check if silicate is condensing on the bottom (not good) keep the container partially submerged in icewater for the majority of the reaction. The mason jar i used the first time got too hot to hold and almost lead to a really big and caustic fuckup

[@notyouraveragegoldenpotato]

Where was this video a year ago?😂

[@rustymachineshop9456]

Can you build crucibles out of that stuff? If not what can a guy make to build crucibles

[@whatthefunction9140]

Hiw do you keep your lab organized?

[@NOBOX7]

I dont have the room to organize any more .

[@revscott58]

Way cool NOBOX7! I knew you had been using the zirconium oxide, blasting media, and yittrium oxide. Now you have added some sodium carbonate. What does that do for the mix? Could you give proportions of those solid ingredients? Backing for stainless welding? Huh? Excellent idea! Blessings man! 👽🐍

[@NOBOX7]

hello revscott , the sodium carbonate is a flux , it lowers the melting point of silica and makes the mix paste better to work with by reducing its service tension . If you paint this stuff on metal without something to reduce the surface tension it beads up on a ducks back . Ill give the ratios when i have a better mix , i dont want to give the impression this formula is finished . Think of how water dissolves salt , it doesnt melt the salt but it dissolves it , the carbonate makes a eutectic substance of dissolved silica or glass and it gives a molten suspension to contain the high emissivity ingredients and other refractory materials . Think of the carbonate as kinda like the cement portion of concrete and the other stuff is the aggregate . The carbonate dissolves the sand making a glass that suspends the particles we added to emit IR heat 30% better than regular refractories .

[@revscott58]

@@NOBOX7 I was looking at a company called Aremco's website. Could have some useful info from their product ingredients for you. I don't know if my comment is allowed since I mention a company. 👽🐍

[@revscott58]

Phosphate bonded alumina was like good for 3200 f. on one of the company refractory coating products. Great to learn your knowledge on the potassium silicate!

[@davidlacziko1516]

Awesome!

[@------country-boy-------]

You are playing with geopolymer. Try mixing it with fresh rock powder such as very fine feldspar powder from a ball mill. Most geopolymer recipies use roasted white clay powder. (Dehydroxilated metakaolin powder). Ive been studying the technology for about 8 years. There are a few secret ingredients i discovered that make it stronger but cant tell you cus its top secret 😅

[@randytucker3083]

Geopolymer?

[@randytucker3083]

Best ever your work is great!