1. Composition & Basic PropertiesTable 1: Fundamental CharacteristicsParameterSpecificatio
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| Parameter | Specification Range |
|---|---|
| Chemical Base | MS Polymer (Silane-terminated polyether) |
| Apariencia | Paste-like, non-sag |
| Densidad | 1.2-1.4 g/cm³ |
| Solids Content | ≥99% |
| Tack-free Time | 15-60 minutes |
| Cure Mechanism | Moisture curing |
| Full Cure Time | 24-72 hours |
| Shore A Hardness | 20-60 |
| Elongation at Break | ≥200% |
| Type | Key Features | Primary Applications |
|---|---|---|
| Standard Grade | Good adhesion, UV resistant | Construction joints, glazing |
| Elastic Grade | High elongation (≥400%) | Expansion joints, concrete repair |
| Low-modulus | Reduced stress on substrates | Sensitive materials bonding |
| Fast-cure | Tack-free in <30 minutes | Production line applications |
| Paintable | Compatible with coatings | Architectural finishes |
| Property | MS Sealant | Polyurethane | Silicone | Acrylic |
|---|---|---|---|---|
| Adhesion | Excellent | Good | Excellent | Fair |
| Paintability | Yes | Limited | No. | Yes |
| UV Resistance | Excellent | Good | Excellent | Fair |
| Movement Capacity | ±25-50% | ±25% | ±50% | ±10-15% |
| Temperature Range | -40°C to +90°C | -40°C to +80°C | -60°C to +200°C | -20°C to +70°C |
| VOC Content | Low | Medium | Low | Medium |
Superior adhesion to most substrates without primer
Excellent weather resistance and UV stability
Paintable surface after full cure
Low VOC and odor compared to polyurethanes
Good elasticity with permanent flexibility
Non-staining to porous materials
| Parameter | Requirement |
|---|---|
| Substrate Temp | 5°C-40°C |
| Ambient RH | 40-80% |
| Joint Design | Depth:Width = 1:1 to 2:1 |
| Tooling Time | 5-15 minutes |
| Minimum Application Thickness | 3 mm |
| Maximum Application Thickness | 15 mm (single application) |
| Aspect | Especificaciones |
|---|---|
| Shelf Life | 9-12 months (unopened) |
| Storage Temp | 5-25°C |
| Packaging | Cartridge, sausage, pail |
| Skin-over Time | 10-30 minutes |
| Clean-up | Specific solvent before curing |
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