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Excellent flexibility and elongation at break for dynamic stress environments.
Superior resistance to abrasion, oils, and low-temperature cracking.
Fast room-temperature curing with balanced pot life and handling properties.
Low viscosity formulation enables easy processing via casting, coating, or impregnation.
Good adhesion to metals, plastics, and composite substrates without priming.
Industrial roller and wear-resistant linings for material handling equipment.
Protective coatings for mining screens, chutes, and slurry transport systems.
Encapsulants and potting compounds for vibration-damping electronic assemblies.
Flexible molds and prototypes in rapid tooling and foundry pattern applications.
Sealants and gasketing materials in automotive under-hood and chassis components.
| Chemical Type | Aromatic polyurethane pre-polymer system (two-component) |
| Product Form | Liquid resin (Part A) + polyol hardener (Part B) |
| Appearance (Part A) | Clear to pale amber viscous liquid |
| Appearance (Part B) | Colorless to light yellow liquid |
| Primary Applications | Casting, coating, sealing, and elastomeric part fabrication |
| Key Features | High toughness, low shrinkage, UV-stabilized surface finish |
| Benefits | Extended service life in abrasive/impact-prone industrial settings |
| Storage Stability | 12 months unopened at 15–25°C in dry, dark conditions |
Q1: What is the primary function of AL-540A in polyurethane systems?
A: AL-540A is a reactive polyurethane resin designed to serve as a chain extender and crosslinking agent, enhancing mechanical strength, abrasion resistance, and thermal stability in thermosetting PU formulations such as coatings, adhesives, and elastomers.
Q2: Is AL-540A compatible with both aromatic and aliphatic isocyanates?
A: Yes, AL-540A exhibits broad compatibility with common aromatic (e.g., MDI, TDI) and aliphatic (e.g., HDI, IPDI) isocyanates, making it suitable for applications requiring either high reactivity or UV stability.
Q3: How should AL-540A be stored to maintain its reactivity?
A: Store in tightly sealed containers under dry, inert conditions (e.g., nitrogen blanket) at room temperature; avoid prolonged exposure to moisture, heat, or ambient humidity to prevent premature reaction or viscosity increase.
Q4: Can AL-540A be used in solvent-free or high-solids PU systems?
A: Yes — AL-540A is formulated for low volatility and good miscibility, supporting its use in solvent-free, high-solids, and even water-dispersible polyurethane systems when properly pre-blended and stabilized.
Q5: Does AL-540A require catalysts to achieve full cure?
A: While AL-540A reacts readily with isocyanates, optimal cure profile and pot life can be fine-tuned using standard urethane catalysts (e.g., tertiary amines or organometallics); catalyst selection and dosage depend on processing conditions and end-use requirements.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
