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In August 1977, Ohio Scientific released the OSI 460Z. This was a multiprocessor expansion board kit for the Model 400 Superboard that greatly expands its software library by supporting several different kinds of microprocessors, including the Intersil 6100 (a microprocessor-based implementation of DEC 's PDP-8 minicomputer) and the Zilog Z80 ...
The gun uses a continuous-duty heating element to melt the plastic glue, which the user pushes through the gun either with a mechanical trigger mechanism on the gun, or with direct finger pressure. The glue squeezed out of the heated nozzle is initially hot enough to burn and even blister skin. The glue is sticky when hot, and solidifies in a ...
Kitchen renovation spackling to cover holes and tape between sheetrock boards Drywall with joint compound applied.. Joint compound (also known as drywall compound, drywall mud, joint cement or mastic) is a white powder of primarily gypsum dust mixed with water to form a paste the consistency of cake frosting, which is spread onto drywall and sanded when dry to create a seamless base for paint ...
Cyanoacrylate is used in archery to glue fletching to arrow shafts. Some special fletching glues are primarily cyanoacrylate repackaged in special fletching glue kits. [25] Such tubes often have a long, thin metal nozzle for improved precision in applying the glue to the base of the fletching and to ensure secure bonding to the arrow shaft.
A glue gun (shown at right) is one method of applying hot adhesives. The glue gun melts the solid adhesive, then allows the liquid to pass through its barrel onto the material, where it solidifies. Thermoplastic glue may have been invented around 1940 by Procter & Gamble as a solution to the problem that water-based adhesives, commonly used in ...
The first solvent-free, multipurpose glue stick that could be used for other materials (e.g. wood, glass and some plastics) was the "PowerPritt", which was put on the market in 2003. [2] There is also a "Pritt X", launched in 2010.
Dimethyldichlorosilane (Si(CH 3) 2 Cl 2) is a key precursor to cyclic (D 3, D 4, etc.) and linear siloxanes. [5]The main route to siloxane functional group is by hydrolysis of silicon chlorides:
In 1940, the U.S. Justice Department filed suit against USG and six other wallboard manufacturers, charging them with price fixing under §§ 1 and 2 of the Sherman Act. The claim stemmed from US Gypsum's 1929 cross-licensing agreements for its patented wallboard, which set prices at which the wallboard must be sold.