Urea Formaldehyde(UF) Liquid/Granular/Irregular Granule/Powder 28% 38% 40%

Urea-formaldehyde, also known as urea-formaldehyde resin, is a synthetic resin made from urea (urea) and formaldehyde (formaldehyde) through a polycondensation reaction. Below is a description of the properties, uses, preparation, and safety information for urea-formaldehyde:

Properties:

1. urea-formaldehyde is colorless or light yellow crystal or granular solid.

2. has good heat resistance, chemical resistance and mechanical strength.

3. It can bond well with other materials and has good adhesive properties.

4. urea-formaldehyde resin can be adjusted the curing speed and hardness according to the usage ratio used.

Urea formaldehyde Instruction

Urea-formaldehyde resin (UF), also known as urea-formaldehyde resin, is formed by polycondensation of urea and formaldehyde under the action of a catalyst (alkaline or acidic catalyst) into an initial urea-formaldehyde resin, and then forms an insoluble and infusible final stage under the action of a curing agent or an auxiliary agent. thermosetting resin. [1] The color of cured urea-formaldehyde resin is lighter than that of phenolic resin, and it is translucent. It is resistant to weak acids and alkalis, has good insulation performance, excellent wear resistance, and is cheap. In the manufacture of various wood-based panels in the wood processing industry, urea-formaldehyde resin and its modified products account for about 90% of the total amount of adhesives used. However, urea-formaldehyde resin is easy to decompose when encountering strong acid and strong alkali, and has poor weather resistance, poor initial viscosity, large shrinkage, high brittleness, water resistance, and easy aging. There is formaldehyde release in the manufacture and use of wood-based panels produced with urea-formaldehyde resin. problem, so it must be modified.

Urea formaldehyde Features

Urea-formaldehyde resin is mainly used to prepare amino alkyd baking varnish with alkyd resin to improve the hardness and dryness of the paint film. It can be combined with non-drying alkyd resin to make acid-cured amino paint for wood furniture finishing. However, the weather resistance, water resistance and gloss retention are slightly worse. It can be used to formulate primers and interior paints with different properties based on epoxy resin and alkyd resin. Key features include:

1. The price is cheap and the raw materials are sufficient.

2. The molecular structure of urea-formaldehyde resin contains polar oxygen atoms, so it has good adhesion to the surface. It can be used in primers and intermediate coatings to improve the bonding force between top coats.

3. Since it can be cured at room temperature when using an acidic catalyst, it can be used in two-component wood coatings.

4. The paint film cured by urea-formaldehyde resin has good flexibility.

5. Urea-formaldehyde resin has high viscosity, high acid value and poor storage stability.

Urea formaldehyde applications

1. urea-formaldehyde is widely used to make plywood, thin wood board, fiberboard and other woodworking panels to increase the strength and stability of the material.

2. It can also be used to make plastic products such as tableware, beverage bottle caps, kitchen utensils and so on.

3. Urea-formaldehyde resins are widely used to make paints, coatings and adhesives, and surface covering materials.