Description:
Melamine is anorganic compound that is often combined with formaldehyde to produce melamineresin, a synthetic polymer which is fire resistant and heat tolerant. Melamineresin is a very versatile material with a highly stable structure. Uses formelamine include whiteboard, floor tiles, kitchenware, fire retardant fabrics,and commercial filters. Melamine can be easily molded while warm, but will setinto a fixed form. This property makes it ideally suited to certain industrialapplications.
Melamine resin ismanufactured by mixing melamine with formaldehyde, and sometimes urea, under heatand pressure. The substances begin to polymerize and are forced into a moldwhich will create the desired shape. Under pressure, melamine releases water,which could make the plastic unstable if it is not removed. The materialsfinish polymerizing and create a finished product, melamine resin.
Melamine resin isknown as a thermoset plastic, because the plastic is fixed after molding. Ifexposed to enough heat, melamine will decompose. For this reason, melaminedishware should not be exposed to high temperatures like those in the oven andmicrowave. The plastic is able to withstand higher temperatures than otherplastics, however. Because it is a thermoset plastic, melamine resin isdifficult to recycle.
Melamine is stable,when stored under normal warehouse conditions. Although not particularly hygroscopic, powdered melamine must still be protected from wetting because, like most powders, it will form lump over extendedstorage period.
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