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Crafts Resin/
Overview
ALITA 872 Pre-accelerated Unsaturated Polyester Resin
Category：Crafts ResinCode：ALITA 872
Applications
ALITA 872 is a pre-accelerated orthophthalic unsaturated polyester resin synthesized from phthalic anhydride, maleic anhydride, and standard glycols. It features high viscosity and low reactivity.
- Properties: Light color, excellent color-mixing suitability, good strength/toughness, low exotherm, and minimal shrinkage.
- Aesthetics: Produces vibrant and bright finished products.
- Applications: Specifically designed for manufacturing resin buttons and various resin decorations.
Specifications
| Inspection Item | Standard Range | Unit | Test Standard |
|---|---|---|---|
| Appearance | Light Blue-Green/Blue Transparent Liquid | -- | Visual |
| Acid Value | 15 - 21 | mgKOH/g | GB/T 2895-2008 |
| Viscosity (25℃) | 1.10 - 1.25 | Pa.s | GB/T 7193-2008 |
| Solid Content | 66 - 72 | % | GB/T 7193-2008 |
| Thermal Stability (80°C) | ≥ 24 | h | GB/T 7193-2008 |
| Gel Time (25℃) | 3.5 - 5 | min | GB/T 7193-2008 |
Note: GT test system: Accelerator (0.6% Cobalt Naphthenate): 2%; Curing agent (Akzo M-50): 2%.
Properties
| Inspection Item | Typical Value | Unit | Test Method |
|---|---|---|---|
| Appearance | Defect-free casting | -- | -- |
| Barcol Hardness | 40 | -- | GB/T 3854-2005 |
| HDT | 54 | ℃ | GB/T 1634-2004 |
| Elongation at Break | 3.0 | % | GB/T 2567-2008 |
| Tensile Strength | 55 | MPa | GB/T 2567-2008 |
| Tensile Modulus | 3000 | MPa | GB/T 2567-2008 |
| Flexural Strength | 100 | MPa | GB/T 2567-2008 |
| Flexural Modulus | 2900 | MPa | GB/T 2567-2008 |
Usage Instructions
1. Composition: ALITA 872 no wax, but contains accelerator.
2. Curing system: 0.5% - 1.0% Akzo M-50 curing agent is recommended for vibrant final coloration.
Storage & Handling
- Safety: Contains potentially harmful components. Use protective equipment.
- Storage: Store below 25℃ (77℉). Away from direct sunlight and heat.
- Environment: No outdoor storage. Keep sealed to prevent monomer loss. Follow "FIFO" principle.