UF non-toxic, odorless, tasteless, transparent itself, after the addition of cellulose filler was milky white translucent, adding titanium dioxide is opaque wear white, if other colorants can be made into smooth surface, bright color jade-like products, so more for tableware, buttons, handles, shells, decorations, can also be used for electrical, instrumentation and other industrial accessories. The Melamine resin, a thermosetting resin made by condensation of melamine and formaldehyde, was industrialised in the 1930s.
Compared with other materials, plastic materials have their own applicability, the choice of plastic materials is to maximize its advantages and avoid disadvantages. Plastic, like other materials, can not be As Good as It Gets, limiting its use in certain situations. In general, plastic materials should not be used in products requiring high mechanical strength, especially for structural components requiring high stiffness and materials with tensile strength exceeding 300 MPa, such as high-load large-scale mechanical parts, large-span components. The heat resistance of common plastics is between 80°C and 200°C, and the long-term service temperature of some characteristic engineering plastics can reach 300°C. therefore, under normal circumstances, plastics above 350°C are not suitable.
The synthetic principle of Melamine resin is similar to that of UF. The first step is the addition reaction of melamine and formaldehyde, which produces mainly trimethylol and trimethylol melamine, the trimethylolmelamine is then further condensed into a resin. The heat resistance, moisture resistance and mechanical strength of the cured product are better than those of the urea-formaldehyde resin because of the triazacyclic structure and more active groups in the molecular structure of Melamine Formaldehyde Resin Powder.
Melamine Formaldehyde Resin Powder Plastics, called melamine plastics for short, can be prepared by using MF as substrate and adding curing agent, filler, colorant, lubricant, etc. . It not only has the similar advantages of UF plastic, but also low water absorption, with higher heat resistance, moisture resistance, can be used in boiling water conditions for a long time, sometimes up to 150-200°C. Melamine Formaldehyde Resin Powder plastic products with high surface hardness, anti-pollution, can be as easy as ceramic to remove tea stains, therefore, widely used as tableware and arc-resistant products. MF can be used for injection molding, laminating plastic products and adhesives, etc. .
