Urea Formaldehyde Glue Powder is a thermosetting resin powder produced by the condensation reaction of urea and formaldehyde under specific conditions. As a key adhesive in the field of wood processing, urea formaldehyde resin powder can achieve a balance between different curing rates and adhesive strength by regulating the molar ratio of urea to formaldehyde, reaction temperature, and catalyst type. The polar groups (such as amino and hydroxyl groups) in its molecular chain can form hydrogen bonds with cellulose and hemicellulose in wood, supplemented by covalent crosslinking, to ensure that the bonding interface meets the T1 water resistance standard. This product needs to be sealed and stored in a cool and dry environment to avoid moisture absorption and clumping. Its shelf life can usually reach 12-18 months.

Urea Formaldehyde Glue Powder Parameters:

Urea Formaldehyde Glue Powder For Use：

1. Prepare a container, stirring tools, and 25kg of room temperature water (add the water twice).

2. Dissolving glue powder:

First pour 15kg of water into the container,

then pour 25kg of resin powder into the water and stir to dissolve.

Stir into a paste until the glue powder does not agglomerate,

then add the remaining 10kg of water and fully stir to form a glue solution.

3. The mixed glue is used after 1 hour of waiting, and the effect is the best.

4. According to the production requirements of the product process, it can be mixed with additives such as curing agent(Ammonium chloride) .

5. During use, increase or decrease the ratio of resin powder to water according to the moisture content of the board and the local climate.

6. Amount of industrial flour added: 20-25% of the glue already blended.(180A to add)

Urea Formaldehyde Glue Powder Features:

1. Precise solidification control technology

Adopting a segmented temperature responsive formula design, the initial bonding time can be controlled within the range of 45-60 seconds under hot pressing conditions of 110-130 ℃, ensuring synchronous curing of the plywood core layer and surface layer. By adding nano silica dispersant, the penetration rate of the gel solution can be increased by 30%, effectively reducing the phenomenon of missing and penetrating gel.

2. Triple guarantee of environmental performance

The release of free formaldehyde is ≤ 0.3mg/L (in compliance with E1 level standards), and environmental protection control throughout the production and use cycle is achieved through the addition of formaldehyde capture agents and biological enzyme degradation technology. The Urea Formaldehyde Glue Powder state can avoid the VOC volatilization problem during the transportation of liquid glue, and the dust recovery system can achieve a raw material utilization rate of over 98%.

3. Enhanced storage stability

By using microcapsule encapsulation technology, urea molecules are isolated and stored from formaldehyde precursors, effectively preventing moisture absorption and pre polymerization. In the accelerated aging test at 35 ℃/85% humidity, the bonding strength decay rate remained below 5% for 6 months, which was better than traditional powders by more than 20%.

4. Optimization of construction adaptability

Equipped with an intelligent mixing system, it supports rapid dissolution under water temperature conditions of 5-25 ℃, reducing the dissolution time to one-third of traditional products. The viscosity of the adhesive solution can be adjusted by adding a gradient to meet the coating requirements of plywood with different thicknesses (controllable thickness of 0.1-0.3mm).

5. Cost benefit balance

By utilizing raw material grading technology, the by-products in the production process are recycled, reducing the overall cost by 12% -15% compared to liquid glue. Cooperate with the automatic weighing system to achieve a single ton plywood adhesive consumption control within the range of 180-200kg.

Urea Formaldehyde Glue Powder Application:

1. Multi layer plywood core bonding

In response to the constant growth characteristics of poplar and eucalyptus wood, the addition of lignin enhancer can increase the bonding strength to over 1.2 MPa, solving the problem of easy delamination of soft wood. Suitable for continuous flat pressing production line of 12-25mm thickness plywood, with a daily output increase of 18%.

2. Structural bonding of furniture components

Develop a low-temperature fast curing formula system to achieve 3-minute curing at 80 ℃, meeting the hot bending forming requirements of curved wood furniture. Combined with vacuum adsorption technology, the bonding yield of complex curved parts has been increased to 97%.

3. Indoor decorative panel veneer

Adopting gradient curing process to ensure synchronous shrinkage of decorative paper and substrate during hot pressing process, solving the problems of bubbling and cracking that are prone to occur in traditional processes. Suitable for the production of fireproof board and impregnated paper veneer plywood.

4. Manufacturing of heavy-duty packaging materials

By adding glass fiber reinforcement, the bonding strength can reach 1.5MPa, meeting the requirement for export pallets to bear more than 3 tons. In the -20 ℃ low-temperature test, maintain the brittle temperature of the adhesive layer at ≤ -35 ℃.

5. Automated production of building templates

Develop a specialized formula for continuous roller coating to meet the adhesive requirements of high-speed production lines (60m/min). Combined with infrared pre curing technology, the curing time of the template is shortened to 4 hours, and the daily production can be increased by 40%.