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Tires Use Melamine Adhesive

IntroductionThis series of products is a rubber adhesive made by mixing high methoxy etherified

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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 965White particles31-35precipitated silicaresinGood liquidity and easy dispersionAdhesive curing resin of resorcinol or phenolic resin
MT  972White particles24-28precipitated silicaresinGood liquidity and easy dispersionAdhesive curing resin of resorcinol or phenolic resin

Melamine Adhesive in Tire Manufacturing: Properties and Applications

Table 1: Key Properties of Melamine Adhesive for Tires

PropertySpecificationSignificance in Tire Production
Chemical BaseMelamine-formaldehyde resinProvides high thermal stability
Curing Temperature140-160°CCompatible with vulcanization process
Bond Strength3.5-5.0 MPaEnsures durable rubber-to-fabric adhesion
Flexibility15-20% elongationMaintains integrity under tire deformation
Moisture Resistance<1% water absorptionPrevents delamination in wet conditions

Table 2: Comparison with Other Tire Adhesives

ParameterMelamine AdhesivePhenolic ResinRFL (Rubber Latex)
Heat ResistanceExcellent (up to 180°C)Good (160°C)Fair (140°C)
Cure SpeedMedium (3-5 min)Slow (5-8 min)Fast (1-2 min)
Fabric CompatibilityNylon, PolyesterRayonAll fabrics
Cost FactorMediumLowHigh
Eco-FriendlinessFormaldehyde concernsVOC emissionsMost environmentally friendly

Table 3: Application Process Parameters

Process StageConditionsRequirements
Fabric Treatment5-8% adhesive solutionUniform coating application
Drying110-130°C for 2-3 minComplete solvent removal
Curing150°C for 4-6 minFull crosslinking
Rubber Bonding140-160°C under pressureSimultaneous vulcanization
Storage<30°C, <60% RH6-month shelf life

Table 4: Performance in Tire Components

Tire SectionAdhesive FunctionPerformance Benefit
CarcassPly-to-rubber bondingPrevents ply separation
BeltSteel/rubber adhesionReduces belt edge separation
BeadApex/chafer bondingImproves durability
Inner LinerButyl rubber adhesionEnhances air retention
SidewallRubber-to-rubber bondingResists flex cracking

Table 5: Technical Specifications

Test MethodRequirementMelamine Adhesive Performance
ASTM D413Peel strength4.2-5.0 N/mm
ISO 36Rubber-to-fabric bond3.8-4.5 MPa
DIN 53522Heat aging (70h@100°C)<15% strength loss
JIS K6256Moisture resistance85% retention after humidity test
SAE J1401Dynamic 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.

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