25kg/bag Melamine Formaldehyde Moulding Compound For dinnerware tableware
1.Appearance: white powder, mono clinic crystal
3.CAS No.: 108-78-1
5.Packaging: inner polyethylene bag and outer woven bag, net weight per bag:
A:25kg, 22mt loading in 20fcl.
B:500kg and 1000kg PP bags,20mt loading in 20fcl.
6.Storage: Store in a cool and dry place and Keep away from strong light and heat
Manufacture And Applications Of Melamine
Melamine can be manufactured from dicyandiamide, hydrogen cyanide, or urea. Modern commercial production of melamine typically employs urea as a starting material. Urea is broken down to cyanuric acid, which then can be reacted to form melamine. Its most important reaction is that with formaldehyde, forming melamine-formaldehyde resins of high molecular weight. These compounds form under the influence of heat and then become fixed into an insoluble and infusible mold; this process is known as thermosetting. Melamine-based thermoset materials contain cross-linked polymers, which make the fixed molds strong and durable. Usually formulated with fillers and pigments, melamine resins can be molded into dishes, containers, utensils, handles, and the like or used as laminating agents or coating materials for wood, paper, and textiles. Formica and Melmac are well-known trade names for products based on melamine resins.
Melamine has also been incorporated into a variety of flame-retardant materials. This application is based on the compound’s high nitrogen content. When exposed to heat, melamine degrades and releases nitrogen. The freed nitrogen takes the place of oxygen in the surface air surrounding the material, which prevents the material from burning. Butylated melamine resins, made by incorporating butyl alcohol into the melamine–formaldehyde reaction mixture, are fluids used as ingredients of paints and varnishes. A copolymer containing melamine, formaldehyde, and sodium bisulfite produces a foam with sound-absorbing and flame-retardant properties. The foam has a notably hard microbubble structure, which gives it an abrasive quality that has been utilized in the development of cleaning products.
||High –end UFC
|Notch impact strength
|Martin heat resistance
|Dielectric Dissipation Factor(100HZ)
|The track resistance
||(compression molding) second
100%Melamine Moulding Compound Specifications
1 Gravity D2525,≤ 1.6 GB1033
2 Specific volume ml/g≤ 3
3 Volatile matter %,≤ 3.8 GB/T13455
4 Water absorb (cold) / (hot) mg,≤ 50/65 GB1034
5 Shrinkage % 0.65 GB13454
6 Distortion temperature °O,≥ 155 GB1634
7 Flowing mm 194 GB13454
8 Impact Strength(notch) KJ/m2,≥ 1.9 GB1043
9 Bending Strength Mpa,≥ 80 GB9341
10 Insulation Resistance after 24h in water MΩ≥ 105 GB1410
11 Dielectric strength MV/m,≥ 9 GB1408
Physical and chemical characteristics
Appearance: White, innoxious, flavorless crystalline powder.
Solubility: Soluble in methanol, formaldehyde, acetic acid, hot ethylene glycol, glycerol, pyridine; Slightly soluble in water, ethanol; Do not dissolve in ether, benzene and carbon tetrachloride. Weakly alkaline aqueous solution.
Melamine presents alkalescence, can react with various acidums to generate melamine salt. In strong acid or strong alkali liquor, melamine will hydrolyze---amido group will be slowly replaced by hydroxyl, thus generate ammeline, Cyanuric Acid and Ammelide. It can react with aldehydes to produce addition compounds. Among them, the reaction of melamine and formalin is the most important part.
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A: We are honored to provide the free sample for you, you just need to pay for the cost of freight.
Q2. Do you accept trial order?
A: Welcome sample order for a trial start,10kg, 20kg, 50kg, 100kg, or 1000kg as your requirement.
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A: Yes, we can. We guarantee that the samples provided will meet the needs of our clients and we will bear the risk of default
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A: Generally it is with 7 days if the goods are in stock. According to quantity your required,
the delivery time may slightly change.
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