一．Features and main uses:
TR-8200 is a modified unsaturated polyester resin based on phthalic anhydride and standard diols dissolved in styrene. It is processed through high speed dispersion
with the addition of white carbon black, dispersants, defoamers, and cobalt metal. It exhibits low viscosity, a low reaction exotherm, and excellent workability. Its excellent
water resistance and mechanical strength make it suitable for the manufacture of FRP fishing boats, yachts, lifeboats, and other large-scale molded products.
二．Liquid resin technical indicators (25℃):
| Item | Unit | Test Indicators | Test Method |
Appearance | --- | Reddish thixotropic liquid | GB/T8237.6.1.1 |
Viscosity | Pa·s | 300-500 | GB/T 7193-2008 |
Acid value | mgKOH/g | 14-24 | GB/T 2895-2008 |
Gel time | Min（25℃） | 25-35 | GB/T 7193-2008 |
Stability | H（80℃） | ≥24 | GB/T 7193-2008 |
Note: Gel time (varies with seasons) Tested in a 25°C water bath, add 2ml of methyl ethyl ketone peroxide solution to 100g of resin. Ambient temperature: 25°C
三．Physical properties of casting (for reference only)：
| Item | Unit | Test performance | Test Method |
Casting | |||
Tensile Strength | MPa | ≥55 | GB/T2567-2008 |
Tensile Elastic Modulus | MPa | ≥3500 | GB/T2567-2008 |
Elongation at Break | % | ≥2.5 | GB/T2567-2008 |
Bending Strength | MPa | ≥100 | GB/T2567-2008 |
Flexural Modulus | MPa | ≥3800 | GB/T2567-2008 |
Heat Deformation Temperature | ℃ | ≥75 | GB/T1634-2004 |
Barcol Hardness | --- | ≥45 | GB/T3854-2005 |
Note:
(1) Casting sample preparation method is carried out in accordance with GB/T8237-2005; temperature is 25℃, curing system: accelerator RCA 1.0%,
curing agent M-50 1.5%.
(2) Casting post-curing treatment: room temperature × 24 hours + 60℃ × 3 hours + 80℃ × 2 hours;
四．Note：
1. Before use, stir thoroughly in the container, or empty all the resin from the container and stir thoroughly before use.
2. Transportation must comply with Chapter 5 of the State Council's "Regulations on the Safety Management of Hazardous Chemicals," regarding the transportation and
handling of hazardous chemicals. This product should be stored in a cool, dark place below 25°C, away from ignition sources and heat sources. The shelf life is three
months when stored below 25°C.