Tires Use Melamine Adhesive
Coating Additives 2025-03-13
This series of products is a rubber adhesive made by mixing high methoxy etherified melamine resin with different proportions of precipitated white carbon black. It is a direct bonding system adhesive for interlayer, formaldehyde, and white bonding systems, and is a high-performance methylene donor. When used in conjunction with formaldehyde acceptors RS, RH, and RE, it is suitable for bonding various rubbers and skeleton materials. Widely used in fields such as tires, tapes, hoses, etc.
| MT 965 | White particles | 31-35 | precipitated silica | resin | Good liquidity and easy dispersion | Adhesive curing resin of resorcinol or phenolic resin | |
| MT 972 | White particles | 24-28 | precipitated silica | resin | Good liquidity and easy dispersion | Adhesive curing resin of resorcinol or phenolic resin |
Melamine Adhesive in Tire Manufacturing: Properties and Applications
Table 1: Key Properties of Melamine Adhesive for Tires
| Property | Specification | Significance in Tire Production |
|---|---|---|
| Chemical Base | Melamine-formaldehyde resin | Provides high thermal stability |
| Curing Temperature | 140-160°C | Compatible with vulcanization process |
| Bond Strength | 3.5-5.0 MPa | Ensures durable rubber-to-fabric adhesion |
| Flexibility | 15-20% elongation | Maintains integrity under tire deformation |
| Moisture Resistance | <1% water absorption | Prevents delamination in wet conditions |
Table 2: Comparison with Other Tire Adhesives
| Parameter | Melamine Adhesive | Phenolic Resin | RFL (Rubber Latex) |
|---|---|---|---|
| Heat Resistance | Excellent (up to 180°C) | Good (160°C) | Fair (140°C) |
| Cure Speed | Medium (3-5 min) | Slow (5-8 min) | Fast (1-2 min) |
| Fabric Compatibility | Nylon, Polyester | Rayon | All fabrics |
| Cost Factor | Medium | Low | High |
| Eco-Friendliness | Formaldehyde concerns | VOC emissions | Most environmentally friendly |
Table 3: Application Process Parameters
| Process Stage | Conditions | Requirements |
|---|---|---|
| Fabric Treatment | 5-8% adhesive solution | Uniform coating application |
| Drying | 110-130°C for 2-3 min | Complete solvent removal |
| Curing | 150°C for 4-6 min | Full crosslinking |
| Rubber Bonding | 140-160°C under pressure | Simultaneous vulcanization |
| Storage | <30°C, <60% RH | 6-month shelf life |
Table 4: Performance in Tire Components
| Tire Section | Adhesive Function | Performance Benefit |
|---|---|---|
| Carcass | Ply-to-rubber bonding | Prevents ply separation |
| Belt | Steel/rubber adhesion | Reduces belt edge separation |
| Bead | Apex/chafer bonding | Improves durability |
| Inner Liner | Butyl rubber adhesion | Enhances air retention |
| Sidewall | Rubber-to-rubber bonding | Resists flex cracking |
Table 5: Technical Specifications
| Test Method | Requirement | Melamine Adhesive Performance |
|---|---|---|
| ASTM D413 | Peel strength | 4.2-5.0 N/mm |
| ISO 36 | Rubber-to-fabric bond | 3.8-4.5 MPa |
| DIN 53522 | Heat aging (70h@100°C) | <15% strength loss |
| JIS K6256 | Moisture resistance | 85% retention after humidity test |
| SAE J1401 | Dynamic fatigue | >500.000 cycles |
Melamine adhesives provide superior heat-resistant bonding for critical tire components, particularly in high-performance radial tires. While facing competition from newer adhesive systems, they remain important for nylon-reinforced tires requiring exceptional durability under thermal cycling. Proper application control is essential to maximize performance while minimizing formaldehyde emissions during production.
