UREA RESIN ADHESIVE
We are a manufacturer based in China. We specialize in providing high-quality UREA RESIN ADHESIVE for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Urea resin adhesive is a liquid adhesive which is produced by reacting urea with formaldehyde using a special catalyst and denaturant under strictly controlled conditions. It is suitable as plywood adhesive with excellent water resistance when a catalyst and appropriate amount of extender are added.
Urea Resin Adhesive: Overview and Key Properties
| Category | Details |
|---|---|
| Chemical Type | Thermosetting amino resin (urea-formaldehyde) |
| Appearance | Colorless to pale yellow liquid/powder |
| Solid Content | 50-65% (liquid), >95% (powder) |
| Curing Mechanism | Heat-activated polycondensation |
Key Performance Properties
| Property | Value |
|---|---|
| Gel Time (100°C) | 30-120 sec |
| pH | 7.5-9.0 |
| Viscosity (25°C) | 150-500 mPa·s |
| Bond Strength | 2.0-3.5 MPa (wood-to-wood) |
| Water Resistance | Class D2-D3 (EN 204) |
Formulation Components
| Component | Function | Content (%) |
|---|---|---|
| Urea Resin | Base polymer | 70-85 |
| Fillers | Viscosity control | 10-20 |
| Catalysts | Cure accelerator (NH₄Cl) | 0.5-2 |
| Modifiers | Flexibility enhancer | 1-5 |
Processing Parameters
| Parameter | Optimal Range |
|---|---|
| Press Temperature | 100-130°C |
| Press Pressure | 0.5-1.2 MPa |
| Press Time | 15-40 sec/mm thickness |
| Moisture Content | 6-10% (substrate) |
Applications
| Industry | Use Case | Key Advantage |
|---|---|---|
| Woodworking | Plywood, particleboard | Fast curing |
| Furniture | Laminated surfaces | Low cost |
| Packaging | Paper bonding | Colorless bond line |
| Textiles | Fabric stiffening | High hardness |
Comparison with Competing Resins
| Property | Urea Resin | Melamine Resin | Phenol Resin |
|---|---|---|---|
| Cost | $ | $$ | $ |
| Cure Speed | Fastest | Fast | Slow |
| Water Resistance | Moderate | High | Very High |
| Formaldehyde Emission | Highest | Medium | Lowest |
Safety & Compliance
| Parameter | Specification |
|---|---|
| Formaldehyde Emission | E1-E2 (CARB/EPA) |
| Storage Life | 2-4 months (liquid), 6-12 months (powder) |
| Handling PPE | Gloves, goggles, ventilation |
Market Data
| Region | Market Share | Growth (CAGR) |
|---|---|---|
| Asia-Pacific | 60% | 4.5% |
| Europe | 25% | 2.8% |
| North America | 10% | 3.1% |
Advantages vs. Limitations
| Advantages | Limitations |
|---|---|
| Lowest cost amino resin | Higher formaldehyde emission |
| Rapid curing cycle | Limited outdoor durability |
| Colorless bonds | Hygroscopic nature |
Summary
Urea resin adhesives remain the most economical choice for indoor wood composites, offering fast processing and clear bond lines. While facing environmental challenges due to formaldehyde emissions, low-VOC formulations are expanding their market viability.
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