Melamine is the most commonly used gas source for intumescent flame retardants, and it is also the raw material for the preparation of many intumescent flame retardant components (such as a variety of phosphates, melamines, phosphates), and is often compounded with other flame retardants for flame retardant of a variety of plastics and other polymers
Melamine, also known as melamine, is a nitrogen heterocyclic organic chemical raw material. Molecular formula: C3N6H6Molecular weight: 12613outsideLook: white single crystal or white powderSecretdegree: 1573×103kg/m3(25℃)MeltingPoint: 354
MelamineSoluble in glycerol, pyridine, hot ethylene glycol, ethanolamine, acetic acid, formaldehyde, etc., but insoluble in * and carbon tetrachloride.
MelamineIt is weakly alkaline and its dissociation constant kb = 10109, which can react with acid to form the corresponding salt.
MelamineIn the case of acidic and heated boiling with water, a hydrolysis reaction occurs and is generatedCyanuric acidDiamide, monoamide cyanate as wellCyanuric acidWait.
MelamineIn the environment of high temperature or insufficient partial pressure of ammonia, it will be deamidated to form miprimary amine, mellamine, dense lane, etc.
3. Use
MelamineIt is an organic chemical intermediate, which is widely used in coatings, medicine, building materials, papermaking, leather, textiles and other industries.
MelamineIt is condensed with formaldehyde to make melamine-formaldehyde resin (a kind of amino resin). MelamineResin has excellent characteristics such as heat resistance, water resistance, aging resistance, chemical resistance resistance, arc resistance, high gloss, high density, high hardness, etc., and is an important chemical raw material for plastics, coatings, wood, papermaking, textiles and other industries.
willMelamineResin is kneaded with fillers, pigments and lubricants to make thermosetting (amino) plastics, its main advantages are lightfast, odorless, easy to dye, do not separate toxic substances under the action of water, will not carbonize at high temperatures, and have good electrical insulation properties and mechanical strength, can be made into various electrical or mechanical equipment accessories and civil heat-resistant containers and tableware. The modified melamine formaldehyde resin can be made into coatings such as baking paint with bright color, durability and good hardness. MelamineFormaldehyde resin is used in the paper industry to make shrink-proof and moisture-proof paper, printing banknotes and maps, etc.;Used in the wood industry as an adhesive or for making decorative panels;Used in the textile industry as a textile finishing agent for textiles, anti-shrinkage, color, wash-resistant, protective clothing crisp;It is used in the building materials industry as a high-efficiency concrete superplasticizer;Used in the leather industry as a tanning agent;It is used in the coating industry as a crosslinker and so on.
(1) Decorative panels: can be made into fireproof, earthquake-resistant, heat-resistant laminates, brightly colored, strong and heat-resistant decorative boards, used as aircraft, ships and furniture veneers and fireproof, earthquake-resistant, heat-resistant house decoration materials.
(2) Coatings: After etherification with butanol and methanol, it can be used as a cross-linking agent for thermosetting coatings and solid powder coatings, and can be used to make metal coatings and high-grade amino resin decorative paints for vehicles and electrical appliances.
(3) Molding powder: through mixing, granulation and other processes, it can be made into melamine plastic, which is undegreed, anti-fouling, and can still maintain good electrical properties when wet, and can be made into white, beat-resistant daily utensils, sanitary ware, melamine tableware, and electrical appliancesequipment, etc. * insulating materials.
(4) Paper: ether etherAfter processing, it can be used as a paper treatment agent to produce anti-wrinkle, anti-shrinkage, non-perishable banknotes and *maps*paper.
MelamineFormaldehyde resin can be mixed with other raw materials to produce fabric finishing agents, leather tanning agents, glazing agents and water repellents, rubber adhesives, flame retardants, high-efficiency cement water reducers, steel desalination agents, etc.