UREA FORMALDEHYDE

*****There is white urea (toilet seat and plate colour) in our stocks. Get in contact with us for the best prices in the market. The colour you have chosen among the coloured urea is delivered to your storage within 1 month.

Urea formaldehyde is also known as urea-methanal. It is named according to synthesis hodoscope and its structure. It is a phenolic resin or plastic in opaque structure. It is synthesized by heating of urea and formaldehyde in the presence of pyrite or ammonia which is weak base. These resins are used in glues, medium density fibreboards and objects that are produced with moulding press.

Features

The features of urea formaldehyde are high tensile strength, flexural modulus, heat-deflection temperature, low water retentivity, mould shrinkage, high surface hardness and volume resistivity.

Chemical Structure

The chemical structure of urea formaldehyde resins can be defined as polymethylene. However, this definition is unclear in terms of structure; this structure can be in branched or chain form. These structures are grouped according to the averages of molar weights and different functional group contents. Changing the synthesis conditions of resins provides different design possibilities for structure and resin features.

Urea Formaldehyde Moulding Powder

Urea formaldehyde moulding powders are used in the production of various materials such as unbreakable plates, trays, toilet seat, electric holders and switches. They are divided into two main groups as injection and compression. Raw material takes shape in the mould depending on factors such as fluidity, moulding time and temperature. By increasing the fluidity, moulding time can be reduced but this also means that the amount of catalyst in the raw material should also be increased and thus the expiration date of the raw material will be reduced.