Principal Properties & Application:
ALITA 951 is an ortho-phthalic unsaturated polyester resin synthesized from phthalic anhydride, maleic anhydride, and standard glycols. It is pre-accelerated and features low viscosity with moderate reactivity.
ALITA 951 resin exhibits a low exotherm peak, minimal shrinkage, high strength, fast post-curing, and excellent heat and water resistance. It offers superior mechanical properties, good fiber wet-out, and excellent injectability. These characteristics enable the production of thicker parts in a single molding process. It is particularly suitable for manufacturing medium to large-sized FRP products using RTM (Resin Transfer Molding) and vacuum infusion processes.
Technical Specifications of Liquid Resin:
| Item | Range | Unit | Test Standard |
|---|---|---|---|
| Appearance | Reddish-purple transparent viscous liquid | – | – |
| Acid Value | 17-24 | mgKOH/g | GB/T 2895-2008 |
| Viscosity (25℃) | 0.12-0.17 | Pa.s | GB/T 7193-2008 |
| Solid Content | 49-55 | % | GB/T 7193-2008 |
| Thermal Stability (80℃) | ≥24 | h | GB/T 7193-2008 |
| Gel Time (25℃) | 30-65 | min | GB/T 7193-2008 |
| Exotherm Peak (25℃) | 100-130 | ℃ | – |
- Gel Time Test: At 25℃ water bath, add 1.0g of M-50 (Nouryon) to 50g of resin.
- Exotherm Peak Test: At 25℃ water bath, add 2.0g of M-50 (Nouryon) to 100g of resin.
Physical Properties of Casting (for reference only)：
| Item | Typical Value | Unit | Test Standard |
|---|---|---|---|
| Appearance (Casting) | Defect-free | – | – |
| Barcol Hardness | 42 | – | GB/T 3854-2005 |
| Heat Distortion Temperature | 80 | ℃ | GB/T 1634-2004 |
| Elongation at Break | 2.5 | % | GB/T 2567-2008 |
| Tensile Strength | 70 | MPa | GB/T 2567-2008 |
| Tensile Modulus | 3500 | MPa | GB/T 2567-2008 |
| Flexural Strength | 120 | MPa | GB/T 2567-2008 |
| Flexural Modulus | 3600 | MPa | GB/T 2567-2008 |
Resin Casting Performance Standard: GB/T 8237-2005
Typical Values of Fiberglass Reinforced Plastics (FRP):
| Item | Typical Value | Unit | Test Standard |
|---|---|---|---|
| Barcol Hardness | 66 | – | GB/T 3584-2005 |
| Flexural Strength | 310 | MPa | GB/T 1449-2005 |
| Flexural Modulus | 18000 | MPa | GB/T 1449-2005 |
| Tensile Strength | 330 | MPa | GB/T 1447-2005 |
| Tensile Modulus | 17000 | MPa | GB/T 1447-2005 |
Instruction and attention:
- ALITA 951 resin contains a promoter but does not contain wax or thixotropic agents.
- ALITA 951 resin is suitable for producing medium to large-sized products using RTM/Vacuum Infusion processes; for small to medium-sized products, ALITA 952 resin is recommended.
- Given the variations in size and thickness of products formed using RTM/Vacuum Infusion processes, it is important to select an appropriate gel time and exotherm peak to meet process requirements. Custom specifications can be provided if necessary.
Handling and Storage:
This resin contains ingredients which could be harmful if mishandled. Contact with skin and eyes should be avoided and necessary protective equipment and clothing should be worn.
Drums – It is highly recommended that all material is stored at stable temperatures below 25°C (77°F). Avoid exposure to heat sources such as direct sunlight or steam pipes. To avoid contamination of product with water, do not store outdoors. Keep sealed to prevent moisture pick-up and monomer loss. Rotate stock.
We provide small samples free of charge, but you will need to cover the shipping costs.
We have our own technical department. After you test the sample, please provide us with your detailed requirements. We can adjust the resin accordingly to enhance the properties of your finished products.
Honestly, it depends on the quantity. We will do our best to create a production plan based on your estimated time of arrival (ETA).
For the first trial order, we require 100% payment upfront. For subsequent orders, we ask for 30% payment in advance and 70% payment after the buyer receives the B/L copy. We also accept L/C if needed.
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