Shellac Silicates

V—Vitrified S—Silicate R—Rubber RF—Rubber reinforced B—Resinoid BF—Resinoid reinforced E—Shellac O—Oxychloride... 

It is advisable to saturate all corks with sodium silicate solution after fitting and boring them (p. 3, Note i). They are then covered with lead foil, wired in, and coated with shellac. 

Bond Type. Alost bonded abrasive products are produced with either a vitreous (glass or ceramic) or a resinoid (usually7 phenolic resin) bond. Bonding agents such as rubber, shellac, sodium silicate, magnesium oxyvbloride, or metal are used for special applications. 

Polyvinyl butyral Potassium polyacrylate Potassium silicate Potato (Solanum tuberosum) starch, Quaternium-18 bentonite Quaternium- 18/benzalkonium bentonite Quaternium-18 hectorite Rhodapon CAV Shellac, Silica, amorphous hydrated. Silica dimethyl sllylate Silica, hydrated Smectite Sodium chloride Sodium hydrosulfite Sodium magnesium fluorosilicate Sodium polyacrylate Sodium polymelhacrylate Sodium polystyrene sulfonate Sodium slllcoaluminate Sodium stearate Sodium sulfate Stannic oxide Stearalkonlum bentonite Stearalkonium hectorite Stearamide, Stearamide MEA-stearate Stearyl alcohol, Stearyl stearate, Synthetic wax, Tallamide DEA, Tetradecylelcosanol Tetrasodium etidronate Tridecyl alcohol Tridecyl stearate Trihydroxystearin, Trilinoleicacid, Tristearin, Urea-formaldehyde resin. Wheat (Triticum vulgare) starch Xanthan gum. Zinc laurate... 

Aluminum calcium silicate Ammonium polyphosphate Calcium aluminate Calcium hydroxide Calcium sulfite Candelilla synthetic Collodion Copal resin Elemi gum Epoxy resin Feldspar Gelatin Magnesium chloride Potassium carbonate Shellac Zirconium silicate cement additive... 

Hydrogenated poly-1-decene Isomalt Lanolin Laurie acid Methyl rosinate Microcrystalline wax Mineral oil Myristic acid Oleic acid Palmitic acid Paraffin Pentaerythrityl rosinate Petrolatum Petroleum wax Rice (Oryza sativa) wax Shellac Stearic acid Zein glazing agent, sweets Calcium silicate glazing, pottery... 

The bond in abrasive wheels may be ceramic, silicate of soda, resin, shellac, rubber, or magnesium oxychloride. 

Modem civilization would not be possible without bonded abrasive products. By the year 1825 sand, emeiy, and even diamond were being bonded together with shellac for use in abrasive sticks and wheels. Rubber bonded wheels were introduced in 1857, the sodium silicate and the vitrified bond just after the Civil War, and the phenolic resin bond in 1923. The metal bond was introduced for diamond wheels in 1940. 

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