WD-40 is the trademarked name of the translucent oil spray and water spray. This spray is manufactured by WD-40 Company based in San Diego, California.
Video WD-40
Histori
Different sources credited different men by creating the WD-40 formula in 1953 as part of the Rocket Chemical Company (later renamed WD-40 Company), in San Diego, California; the formula was kept as a trade secret and never patented.
According to Iris Engstrand, a historian of San Diego and California history at San Diego University, Iver Norman Lawson found the formula, while the WD-40 corporate website and other books and newspapers cited Norman Larsen. "WD-40" is shortened from the term "Water Displacement, the 40th formula", which suggests it is the result of the 40th attempt to create the product. Sprays, composed of various hydrocarbons, were originally designed for use by Convair to protect the outer skin from Atlas's rust from corrosion and corrosion. This outer shell also serves as the outer wall of the missile fuel balloon tank, which is so fragile that, when empty, they must continue to be pumped with nitrogen to avoid falling. WD-40 was later found to have many household uses and was made available to consumers in San Diego in 1958.
In Engstrand's account, Iver Norman Lawson came with a mixture that moved the water after work at home, and handed it to Rocket Chemical Company for $ 500, which is currently (2018) about $ 4,600. Norman Larsen, president of the company, who had the idea to pack it in aerosol cans and market it this way.
It was written as a new consumer product in 1961. In 1965 it was used by airlines including Delta and United; United, for example, uses it on fixed and moving joints of their DC-8 and Boeing 720s in maintenance and repair. At that time, airlines used a variant called WD-60 to clean turbines, remove light rust from control lines, and when handling or storing metal parts. In 1969 the WD-40 was being marketed to farmers and mechanics in the UK.
Maps WD-40
Function
Long-term active ingredients are non-volatile viscous oils that remain on the surface used, providing lubrication and moisture protection. This oil is diluted with volatile hydrocarbons to create a low azosol-low viscosity liquid to penetrate the cracks. The volatile hydrocarbon then evaporates, leaving the oil. Propellants (originally low molecular weight hydrocarbons, now carbon dioxide) create pressure in the cans to force fluids through the canned cans before they evaporate.
Its properties make it useful both in domestic and commercial settings. Common uses for WD-40 include removal of dirt and scraping of screws and bolts that are jammed. It can also be used to loosen stubborn zippers and replace moisture.
Due to its low viscosity, WD-40 is not always an oil suitable for certain tasks. Applications that require high viscosity oil may use motor oil. Those who need mid-range oil can use hone oil.
Formulation
The WD-40 formula is a trade secret, and may vary over time. To avoid disclosure of the composition, the product was not patented in 1953, and the window of opportunity to patent it has long been closed. The main materials of WD-40 as provided in aerosol cans, according to U.S. Material Safety Material Information, are:
- 50% "aliphatic hydrocarbons". The manufacturer's web site claims this ratio in the current formulation can not be accurately described as Stoddard solvent, a similar hydrocarbon mixture.
- & lt; 25% petroleum base oil. Presumably mineral oil or lubricating oil is light.
- 12-18% low aliphatic hydrocarbon vapor pressure. Reduces fluid viscosity so it can be used in aerosols. Hydrocarbons evaporate during application.
- 2-3% carbon dioxide. The propellant is now used instead of the original liquid petroleum gas to reduce the combustibility of the WD-40.
- & lt; 10% inert material.
The German version of the EU mandatory safety sheet lists the following safety-relevant materials:
- 60-80% heavy breath treated with hydrogen (oil product used in cigarette lighter axis type)
- 1-5% carbon dioxide
It warns of high product combustion abilities and the risk of irritation on human skin when repeatedly exposed to WD-40. Nitrile rubber gloves and safety goggles should be worn (ordinary rubber is destroyed if exposed to petroleum products). It also mentions that water is not suitable for extinguishing WD-40 burning.
In 2009, Wired published an article with gas chromatography results and a mass spectroscopy test on WD-40, indicating that the main components were C9 to C14 alkanes and mineral oil.
References
External links
- Official website
- Material Safety Material Sheet WD-40
- WD-40 uses, by Snopes.com
Source of the article : Wikipedia
0 Comments