Urea formaldehyde is a translucent thermosetting resin made by heating urea and formaldehyde in an ammonia or pyridine solution. A polymer formed by the reaction of urea with formaldehyde. Also known as urea formaldehyde resin. UF for short. Processing molding occurs when crosslinking, products for the thermosetting resin insoluble not melt. Than phenolic resin after curing of urea-formaldehyde resin color shallow, translucent shape, weak acid, weak alkali resistance, good insulation performance, excellent wear resistance, low price, 37% of urea and formaldehyde under the catalysis of acid or alkali aqueous solution can be obtained condensation urea-formaldehyde oligomers, linear to industrial alkali as catalyst, reaction, around 95 ºC of formaldehyde/urea molar ratio is 1.5 ~ 2.0, in order to keep the resin to curing.
The first step of the reaction is to produce one and two hydroxymethyl urea, and then further condensation of hydroxymethyl and amino groups to obtain a soluble resin. If catalyzed by acid, it is easy to lead to gel. The product must be stored under neutral conditions. Linear UF resins can be cured at room temperature with ammonium chloride as curing agent. The molding powder is cured by heating at 130~160ºC, and the curing process can be accelerated by accelerators such as zinc sulfate, trimethyl phosphate and diethyl oxalate. Urea-formaldehyde resin is mainly used in the manufacture of molded plastics, household goods and electrical components, and can also be used as board adhesives, paper and fabric sizing, laminating panels, building decorative boards, etc. Because of its light color and easy coloring, products are often rich in color.
It is also called as urea molding compound. It is produced by adding curing agent, filling, colorant and lubricant into the urea formaldehyde resin.
How to storage melamine?
A) Storage life: 6 months under temperature lower than 30° C
B) The goods should be stored in a dry, ventilated location. Avoid direct sunshine and moisture
C) The package should be sealed again immediately once the pack has been opened to avoid moisture
D) Avoid contact with eyes. Once splashed into eyes, flushed out with plenty of clean water.
It has the following features: high strength, anti-scratch, anti-heat, no poison, good shining, bright color and no color changing issue with long term use.
| Melamine |
Premium |
Excellent 1 |
Excellent 2 |
First class |
Second level |
Third level |
|
| NO. |
1+ |
01 |
02 |
03 |
04 |
05 |
|
| Appearance |
White powder with small impurities |
White powder with more impurities |
White powder with a lot of impurities |
White powder with a lot of impurities |
White powder with a lot of impurities |
Light yellow powder |
|
| Purity% |
≥99.8 |
≥99.8 |
≥99.8 |
≥99.0 |
≤99.0 |
≤99.0 |
|
| Moisture |
≤0.1 |
≤0.1 |
≤0.1 |
≤0.2 |
≥0.2 |
≥0.2 |
|
| PH value |
7.5-9.5 |
7.5-9.5 |
7.5-9.5 |
7.5-9.5 |
7.5-9.5 |
7.5-9.5 |
|
| Ash |
≤0.03 |
≤0.03 |
≤0.03 |
≤0.05 |
≥0.05 |
≥0.05 |
|
| Haze degree |
≤10 |
≤20 |
≤20 |
≤30 |
≥30 |
≥50 |
|
| Color degree |
≤10 |
≤20 or bluish and greenish |
≤20 or bluish and greenish |
≤30 or bluish and greenish |
≥30 |
≥50 |
|
Urea formaldehyde molding compound is widely used in producing the following products:
1. Imitation Ceramic tableware, such as plates, bowl, chopsticks and so on.
2. Entertainment product, such as mahjong, domino and so on.
3. Daily necessities, industrial electrical plug-ins and so on.
Packing: White box, Color box, Brown box , it all depends on customer's requirements.
Delivery time: 15-25 days based on MOQ.
Payment term: T/T, Western Union, Paypal, LC at sight.
Shipping Type: FOB/CIF by Sea/Air, Express etc.
Cooperateion with a majority of importers in global market
Experience in dong business with heavy customers
Delivery time control for decent time
Designing team for new product development
Factory audit report by SGS
Free sample for customers
Welcome To Xiamen Shuanghaijin International Trade Co., Ltd. We are professional manufacturer and exporter of melamine powder for making tableware. Our factory is located in Ganzhou City, Jiangxi Province, China. Our factory covers an area of 80,000 square meters, We have over 1000 employees, has a large annual sales which is over 67 million US dollars. Our well-equipped facilities and excellent quality control throughout all stages of production enable us to guarantee all customer's requestion. Becuase of our high quality and after-sales service, we have gained many global customers from South America, Eastern Asia, Southeast Asia, Middle East, Africa.
We are specialized in the production of amino plastic powder (mainly to plastic electric appliance), melamine molding powder(mainly to make plastic melamine tableware), and melamine glazing powder.What's more, we has two production lines of formaldehyde, which has a large output 100,000 tons. The capacity of melamine molding powder reaches to 20,000 tons per year. The capacity of urea molding powder is 50,000 tons per year. And we have a 1000-tons output of glazing powder. Glazing powder is used to polish the surface of tableware. In China market, we occupy the biggest market share. We sell melamine molding powder 1,800 tons in average per month, and melamine glazing powder 300 tons in average per month.
1.Are you a manufacturer or trading company?
We are Factory and have our own trading company.
2.How about the packing?
Usually we provide the packing as 25 kg/bag. Of course, we can also pack as your requirements.
3.How about the storage and transport?
It should be stored in a dry and ventilating warehouse. Be cautious to keep away from moisture and heat; unloaded with care, so as to avoid the damage.
4.Do you provide samples ? is it free or extra ?
Yes,we can offer 200-500g samples for free charge but do not pay the cost of freight.
5.When will I get reply?
We ensure you fast response, fast service. Emails will be replied in 12 hours , your questions will be answered in time.
Audited Supplier 
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