Insulation melamine-formaldehyde

Some of the chemicals mentioned above and others, such as chlorinated mbber or paraffin, antimony trioxide, calcium carbonate, calcium borate, pentaerythrithol, alumina trihydrate, titanium dioxide, and urea—melamine—formaldehyde resin, may be used to formulate fire retardant coatings. Many of these coatings are formulated in such a way that the films intumesce (expand) when exposed to fire, thus insulating the wood surface from further thermal exposure. Fire retardant coatings are mostly used for existing constmction. 

Glass-reinforced melamine-formaldehyde laminates are valuable because of their good heat resistance (they can be used at temperatures up to 200°C) coupled with good electrical insulation properties including resistance to tracking. 

By means of chemical reactions thermosetting plastics form three-dimensional structures. In the example above the nitrogen compound urea reacts with formaldehyde (methanal), in which process three molecules combine and a molecule of water is formed. In this example two H atoms react, but all other H atoms ( ) enter into the same reaction. Since urea is a three-dimensional molecule, the network will also be three-dimensional. For instance switches and sockets are made of UF. Other thermosetting plastics are polyurethane PU (insulation) and melamine-formaldehyde MF (panels). 

There are also many applications of phenolics where high electrical insulation properties are not as important, and their heat resistance, adequate shock resistance, and low cost are important features for example, knobs, handles, telephones, and instrument cases. In some of these applications phenolics have been replaced by ureaformaldehyde, melamine-formaldehyde, alkyd, or newer thermoplastics because of the need for brighter colors and tougher products. 

Usually shortened to melamine, melamine formaldehyde is often used in kitchen utensils and tableware and in electrical insulating parts. It is strong and glossy and has good resistance to heat, chemicals, moisture, electricity and scratching, has excellent moulding properties and is available in a range of vibrant colours. 

Cocamine Feldspar Hydrogenated tallowtrimonium chloride Stearamine concrete admixtures Calcium lignosulfonate Melamine-formaldehyde resin concrete aggregate, lightweight Perlite Vermiculite concrete conditioning Calcium chloride concrete insulation lonomer resin... 

Ammonia and methanol are starting points for amino-resins, which are therefore syngas derivatives. Urea-formaldehyde resins are used in particle board (chipboard) and plywood manufacture UF-foam is also widely used for cavity wall insulation in the U.K. Melamine-formaldehyde resins are possibly more familar from the dinnerware and heat-resistant wood finishes produced. 

---