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Pultrusion Resin/
Overview
ALITA 262 Orthophthalic UPR (Extrusion / Pultrusion High Rigidity Type)
Category：Pultrusion ResinCode：ALITA 262
Applications
ALITA 262 is an unsaturated polyester resin based on phthalic anhydride, featuring low viscosity and medium reactivity.
- Core Features: Exhibits excellent rigidity, with products resistant to deformation and possessing good dimensional stability.
- Process Suitability: Specifically optimized for extrusion and pultrusion molding processes; its low viscosity helps in rapid fiber wetting.
- Typical Applications: Suitable for manufacturing pultruded products requiring a balance between flexibility and rigidity, such as:
- Fishing rods, Tent poles.
- Gratings, Structural rod members.
Specifications
| Inspection Items | Specification Range | Unit | Test Method |
|---|---|---|---|
| Appearance | Light yellow liquid | -- | -- |
| Acid Value | 12 - 18 | mgKOH/g | GB/T 2895-2008 |
| Viscosity (25℃) | 0.35 - 0.65 | Pa·s | GB/T 7193-2008 |
| Solid Content | 60 - 66 | % | GB/T 7193-2008 |
| Thermal Stability (80℃) | ≥ 24 | h | GB/T 7193-2008 |
| SPI-GT (82.2℃) | 4 - 9 | min | GB/T 7193-2008 |
Gel Time Notes:
25℃ gel time test (50g resin + 0.9g 1% Cobalt accelerator + 0.9g Nouryon M-50).
Properties
| Inspection Items | Typical Value | Unit | Test Method |
|---|---|---|---|
| Barcol Hardness | ≥ 42 | -- | GB/T 3854-2005 |
| Heat Distortion Temp (HDT) | 88 | ℃ | GB/T 1634-2004 |
| Elongation at Break | 5.7 | % | GB/T 2567-2008 |
| Tensile Strength | 66 | MPa | GB/T 2567-2008 |
| Tensile Modulus | 3050 | MPa | GB/T 2567-2008 |
| Flexural Strength | 125 | MPa | GB/T 2567-2008 |
| Flexural Modulus | 3500 | MPa | GB/T 2567-2008 |
Experimental Notes:
1. Curing system: 0.6% Cobalt Naphthenate 1.0% + Enox BPO-50F 1.0%.
2. Post-treatment: Room temp 24h + 60℃ 3h + 110℃ 2h.
Usage Instructions
1. Composition: ALITA 262 resin does not contain wax, accelerators, or thixotropic agents.
2. Recommended Curing System: Suggest using BPO (0.5-2.0%) or TBPB (0.5-1.5%). Actual selection should be based on equipment, process temperature, and speed.
3. Shrinkage Control: When manufacturing thick-walled products, it is recommended to add low-shrinkage additives to reduce shrinkage and prevent cracking.
4. Selection Guidance:
- Higher heat/seawater resistance: Select Isophthalic ALITA 239.
- Higher corrosion resistance: Select Epoxy Vinyl Ester ALITA 901.
Storage & Handling
- Safety Protection: Contains styrene and other ingredients; avoid skin and eye contact. Wear protective clothing, gloves, and goggles.
- Storage Environment: Recommended to store in a cool place below 25℃. Keep away from direct sunlight, fire sources, or high-temperature pipes.
- Management: Keep containers sealed; prevent moisture contamination and monomer evaporation. Follow the "First-In, First-Out" principle.