July 2024
Intermediate to advanced
280 pages
12h 52m
English
Content preview from The Essential Handbook of Polymer Terms and Attributes
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231 Urea-Formaldehyde
Urea-formaldehyde (UF), more commonly known as urea-methanal, is an important class of amino resins made from urea and formaldehyde.
The first attempt to investigate the structure of the products of the urea-formaldehyde reaction was made by Hölzer and Tollens in 1884. In 1919, Hanns John of Prague, Czechoslovakia, obtained the first patent for urea-formaldehyde resin. The commercial production of UF resin started in 1928.
The UF resins are noted for their high strength, rigidity, cost-effectiveness, and fast cure rate. In fact, they are some of the fastest-curing resins available. At elevated temperatures, they can be cured in as little as 2 seconds.
However, UF resins are degradable by ...
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