In my project i have to build a thermosI need to build this cup that can store hot liquid for a long time without losing heatWhat should i use as my core?A mug?or a glass cup? It has to be able to survive very hot temperature so i wont use a styrofoam cup as that could melt.My next option is to wrap the cup with certain material that are good for insulation:What are you ideas on some insulators ?Some good insulators of heat that i could use are:Aluminum foilbubble wrapStyrofoambut you can state your ideas, you dont need to base your opinion on how to wrap the cup with only the materials i have shown
I think you have fiberglass wool (insulation material) confused with solid fiberglass, like that used in laddersThe wool stuff, also known as glass wool or spun glass, has a lot of tiny slivers that can get into your skin and irritate you something awfulSolid fiberglass, like the ladder material, doesn't have these friable fibers that come off on your hand or other skin, so it doesn't have that problemSo, assuming the ladder is strong enough to hold you (check the weight rating), it's just as safe as a metal or wood ladderSafer if you're working around any wiring, becaus fiberglass is not a good conducter of electricity.
It has to be able to survive very hot temperature so i wont use a styrofoam cup as that could meltUnless your liquid is going to be over 100C ie boiling water, styrofoam is idealIf say molten lead then even the mug or glass may crack! good insulators would be a combination eg styrofoam cup with bubble wrap to cut conduction and convection with Al foil around outside to cut radiation losesDon't forget to do have a lid of the same materialsthis is where heat will be liable to escape.
