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Sandpaper, also known as glasspaper or as coated abrasive, is a type of material that consists of sheets of paper or cloth with an abrasive substance glued to one face. [1] In the modern manufacture of these products, sand and glass have been replaced by other abrasives such as aluminium oxide or silicon carbide.
Silicon carbide (SiC), also known as carborundum (/ ˌ k ɑːr b ə ˈ r ʌ n d əm /), is a hard chemical compound containing silicon and carbon. A wide bandgap semiconductor , it occurs in nature as the extremely rare mineral moissanite , but has been mass-produced as a powder and crystal since 1893 for use as an abrasive .
Reaction bonded silicon carbide, also known as siliconized silicon carbide or SiSiC, is a type of silicon carbide that is manufactured by a chemical reaction between porous carbon or graphite with molten silicon. Due to the left over traces of silicon, reaction bonded silicon carbide is often referred to as siliconized silicon carbide, or its ...
The most abrasive are shot blasting (with metal shot) and sandblasting (with sand). Moderately abrasive variants include glass bead blasting (with glass beads) and plastic media blasting (PMB) with ground-up plastic stock or walnut shells and corncobs. Some of these substances can cause anaphylactic shock to individuals allergic to the media. [3]
An editor asked on the main article page: "What is sandpaper grade?! I can't find it anywhere on the internet" (Piano non troppo 10:50, 22 July 2009 (UTC)) Unless I'm missing something, I would think the sandpaper grade is the same as the sandpaper grit. Wizard191 16:35, 22 July 2009 (UTC)
RTV silicone rubber can be used to cast materials including wax, gypsum, low-melt alloys/metals, and urethane, epoxy, or polyester resins (without using a release agent). A more recent innovation is the ability to 3D print RTV silicones.
Silicon carbide is rapidly attacked by chlorine gas, which forms SiCl 4 and carbon at 100 °C and SiCl 4 and CCl 4 at 1000 °C. It is mostly used as an abrasive and a refractory material, as it is chemically stable and very strong, and it fractures to form a very sharp cutting edge.
John Oakey (1813 – 10 January 1887) was an English inventor and founder of John Oakey & Sons Ltd. a manufacturer of sandpaper and polishing materials.. Oakey was apprenticed to a piano maker where he learnt to make sandpaper by glueing sand or powdered glass onto paper.