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Adhesion promoters STD-7255

1. Product OverviewTable 1: Basic Product SpecificationsParameterSpecificationTest MethodC

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Innehåll

1. Product Overview

Table 1: Basic Product Specifications

ParameterSpecifikationTest Method
Chemical BaseModified silaneFTIR Analysis
UtseendeClear liquidVisual
Density (20°C)0.95-1.05 g/cm³ISO 2811
Viscosity (25°C)10-50 mPa·sDIN 53019
Blixtpunkt≥65°CISO 2719
Solid Content5-15%DIN 53185
pH Value4.5-6.5ISO 976
Solvent SystemEthanol/WaterGC Analysis


2. Application Performance

Table 2: Substrate Compatibility & Performance

Substrate TypeSurface PreparationAdhesion ImprovementRecommended Cure Condition
PP/EPDMPlasma treatment300-400%80°C × 30min
ABSSolvent wipe200-250%RT × 24h
AluminumAbrasion + degrease150-200%100°C × 15min
GlassAlcohol cleaning180-220%RT × 12h
Painted SurfacesNone required120-150%60°C × 45min


3. Comparative Performance

Table 3: STD-7255 vs Alternative Adhesion Promoters

CharacteristicSTD-7255Silane-basedTitanate-basedChrome-based
Environmental ImpactLowMediumLowHigh
Substrate Versatility★★★★★★★★★★★★★★★★
Thermal Stability200°C180°C220°C250°C
Humidity Resistance★★★★★★★★★★★★★★★★
Application MethodSpray/DippingSprayBrushSpray
Cure SpeedFastMediumSlowMedium
VOC Content<50g/L100-200g/L<30g/L150-300g/L


4. Recommended Application Guidelines

Surface Preparation:

Clean with isopropanol

Abrade non-polar surfaces

Maintain surface temperature 15-35°C

Application Methods:

Spray coating: 2-5μm wet film

Dip coating: 10-30 sec immersion

Brush application: Even coverage

Curing Parameters:

Air dry: 5-10 minutes

Force dry: 60-80°C for 5-15 minutes

Full cure: 24h at RT or 1h at 80°C


5. Performance Characteristics

Key Advantages:

Excellent chemical resistance

UV stability

Low odor formulation

Water-based compatibility

Non-yellowing properties

Limitations:

Not for continuous immersion

Limited shelf life after opening

Requires dry storage


6. Quality Control Parameters

TestMethodAcceptance Criteria
AdhesionISO 2409Class 0-1
Humidity ResistanceDIN 50017500h no delamination
Thermal CyclingSAE J188550 cycles stable
Salt SprayASTM B117720h ≤2mm creepage
Peel StrengthASTM D3330≥4 N/mm


7. Safety & Handling

AspectRequirement
Storage Temperature5-30°C
Shelf Life12 months
PPE RequirementsGloves, goggles
VentilationRequired
DisposalHazardous waste


8. Industry Applications

Automotive interior/exterior trim bonding

Plastic-metal hybrid components

Electronic component encapsulation

Industrial composite manufacturing

Glass fiber reinforced plastics

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