Cotton Reloaded - 08: Killer-Apps (German Edition)
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Sodium silicate is used, along with magnesium silicate , in muffler repair and fitting paste. When dissolved in water, both sodium silicate and magnesium silicate form a thick paste that is easy to apply.
When the exhaust system of an internal combustion engine heats up to its operating temperature , the heat drives out all of the excess water from the paste. The silicate compounds that are left over have glass-like properties, making a temporary, brittle repair. Sodium silicate is also used currently as an exhaust system joint and crack sealer for repairing mufflers, resonators, tailpipes, and other exhaust components, with and without fiberglass reinforcing tapes. The sodium silicate, however, is the high-temperature adhesive; the kaolin serves simply as a compatible high-temperature coloring agent.
Some of these repair compounds also contain glass fibres to enhance their gap-filling abilities and reduce brittleness. Sodium silicate can be used to fill gaps within the head gasket. Commonly used on aluminum alloy cylinder heads , which are sensitive to thermally induced surface deflection. This can be caused by many things including head-bolt stretching, deficient coolant delivery, high cylinder head pressure, overheating, etc. Sodium silicate is suspended in the coolant until it reaches the cylinder head. A sodium silicate repair can last two years or longer.
The repair occurs rapidly, and symptoms disappear instantly. Contamination of engine oil is a serious possibility in situations in which a coolant-to-oil leak is present. Sodium silicate glass particulate contamination of lubricants is detrimental to their function.
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Sodium silicate solution is used to inexpensively, quickly, and permanently disable automobile engines. Running an engine with about 2 liters of a sodium silicate solution instead of motor oil causes the solution to precipitate, catastrophically damaging the engine's bearings and pistons within a few minutes. A mixture of sodium silicate and sawdust has been used in between the double skin of certain safes.
This not only makes them more fire resistant , but also makes cutting them open with an oxyacetylene torch extremely difficult due to the smoke emitted. When crystals of a number of metallic salts are dropped into a solution of water glass, simple or branching stalagmites of coloured metal silicates are formed. This phenomenon has been used by manufacturers of toys and chemistry sets to provide instructive enjoyment to many generations of children from the early 20th century until the present. An early mention of crystals of metallic salts forming a " chemical garden " in sodium silicate is found in the Modern Mechanix magazine.
Sodium silicate is used as a deflocculant in casting slips helping reduce viscosity and the need for large amounts of water to liquidize the clay body. It is also used to create a crackle effect in pottery, usually wheel-thrown. A vase or bottle is thrown on the wheel, fairly narrow and with thick walls. Sodium silicate is brushed on a section of the piece. After 5 minutes, the wall of the piece is stretched outward with a rib or hand.
The result is a wrinkled or cracked look. It is also the main agent in "magic water", which is used when joining clay pieces, especially if the moisture level of the two differs. Sodium silicate with additives was injected into the ground to harden it and thereby to prevent further leakage of highly radioactive water from the Fukushima Daiichi nuclear power plant in Japan in April, In Seattle, crewmen dressed in civilian clothing were sent in to secretly buy quarts of an automotive product containing sodium silicate originally identified as Stop Leak to repair a leaking condenser system.
The Nautilus was en route to the North Pole on a top secret mission to cross the North Pole submerged. A historical use of the adhesive properties of sodium silicates is the production of paper cartridges for black powder revolvers produced by Colt's Manufacturing Company during the period from until , especially during the American Civil War. Sodium silicate was used to seal combustible nitrated paper together to form a conical paper cartridge to hold the black powder, as well as to cement the lead ball or conical bullet into the open end of the paper cartridge.
Such sodium silicate cemented paper cartridges were inserted into the cylinders of revolvers, thereby speeding the reloading of cap-and-ball black powder revolvers. This use largely ended with the introduction of Colt revolvers employing brass-cased cartridges starting in Reloading brass shotgun shells was widely practiced by self-reliant American farmers during the s, using the same waterglass material that was also used to preserve eggs.
The cementing of the top wad on a shotgun shell consisted of applying from three to five drops of waterglass on the top wad to secure it to the brass hull. Brass hulls for shotgun shells were superseded by paper hulls starting around The newer paper-hulled shotgun shells used a roll crimp in place of a waterglass-cemented joint to hold the top wad in the shell.
However, whereas brass shotshells with top wads cemented with waterglass could be reloaded nearly indefinitely given powder, wad, and shot, of course , the paper hulls that replaced the brass hulls could be reloaded only a few times. Waterglass has been used as an egg preservative with large success, primarily when refrigeration is not available. Fresh-laid eggs are immersed in a solution of sodium silicate waterglass.
If they are then stored in appropriate environment, the majority of bacteria which would otherwise cause them to spoil are kept out and their moisture is kept in. According to the cited source, treated eggs can be kept fresh using this method for up to five months. When boiling eggs so preserved, the shell is no longer accessible to water, and the egg will tend to crack unless a hole in the shell is made e. Sodium silicate flocculant properties are also used to clarify wine and beer by precipitating colloidal particles.
As a clearing agent, though, sodium silicate is sometimes confused with isinglass which is prepared from collagen extracted from the dried swim bladders of sturgeon and other fishes. Eggs preserved in a bucket of waterglass gel, and their shells are sometimes also used baked and crushed to clear wine. Sodium silicate gel is also used as a substrate for algal growth in aquaculture hatcheries.
From Wikipedia, the free encyclopedia. It has been suggested that this article be merged with Sodium metasilicate.
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Discuss Proposed since September Magia naturalis sive de miraculis rerum naturalium, libri iiii Natural magic or on the miracles of nature, in four books ; pages —, "Crystallus, ut fusilis fiat" quartz, so made molten. De Lithiasi, page 53 , van Helmont mentions that alkalis dissolve silicates: Published by Johan Jansson, Amsterdam. Polytechnisches Journal , volume 17, pages — Seine Darstellung, Eigenschaften und seine mannichfache Anwendung in den technischen Gewerben Water-glass: Le Moniteur scientifique , volume 1, — , pages — Published by Hartleben, Vienna, Austria.
Published by Vieweg, Braunschweig, Germany. Published by Carnegie Library, Pittsburgh, Pennsylvania. Chemistry of the Elements 2nd ed. Retrieved March 22, Anderson with Clay Blair Jr.
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All too late Maria and Laurenz realise what a terrible threat the Templars' secret poses. Sodium silicate flocculant properties are also used to clarify wine and beer by precipitating colloidal particles. However, it was later claimed that the substances prepared by those alchemists were not waterglass as it is understood today. Episode 4 "Maya" erscheint am New clues found by Don Luigi require Peter and Maria to break into the sealed papal apartment. Apocalypsis, Season 2, Episode 7: Apocalypsis, Season 1, Episode 4:
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