Product Description
BRT is a general purpose, clear, optical gloss and UV resistant laminating resin for laminating white surfboards and for hot coating. Based on the entropic CLR - Clear Epoxy Resin, BRT can be combined with all CLR Clear hardeners. BRT is a USDA BioPreferred® certified product with a 30% biobase content.
Usage
- White surfboards
- Standing paddle boards
Consumption
- Approx. 3 litres for 1 short board of 2 m
- Approx. 12 litres for 1 SUP or 2 long boards
Working Conditions
Working temperature: Optimal temperature from 21°C to 30°C
Working environment: Prefer low-humidity environments, especially for use outside the optimal temperature range for the product.
Application Tips
- For best results, mix the two components according to weight.
- Always mix the product thoroughly for at least 2 minutes, scraping all surfaces of the container to ensure thorough mixing.
- It is preferable to use the product in a temperature-controlled environment within the optimal use limits of the product. Avoid cold ambient temperatures or high humidity.
- For optimum curing performance, ensure that surfaces are dry and free of all dirt, debris and/or oil. Surface preparation by mechanical sanding is strongly recommended.
- Perform pre-tests with the materials and processes being considered to fully understand the curing characteristics of the resin in your work environment and the compatibility of the resin with other materials.
- Avoid using BRT on dark coloured surfaces as the optical brightener may degrade the appearance!
Mechanical Characteristics
| Tensile modulus (ASTM D638) | 3.2 GPa |
| Tensile strength (ASTM D638) | 67.6 MPa |
| Elongation (ASTM D638) | 6% |
| Flexural Modulus (ASTM D790) | 3.0 GPa |
| Flexural strength (ASTM D790) | 100.5 MPa |
| Compressive strength (ASTM D695) | 86.3 MPa |
| Ultimate Tg | 57°C |
| Hardness (shore D) | 70-80 |
Processing Characteristics
| Mixing ratio (by volume) | 2:1 |
| Mixing ratio (by weight) | 100:43 |
| Viscosity (A/B/Mixed at 25°C) | 2040/140/800 mPas |
| Component density (density at 25°C) | 1.14 (resin), 0.98 (hardener) gcm-3 |
| Density of the mixture (density at 25°C) | 1.09 gcm-3 |
| Operating time (at 25°C) | 43 minutes |
| Dry to the touch (at 35°C) | 8 hours |
| Recommended full cure | 7 days at 25°C |
Environmental Features
| VOC content (ASTM D2369) | 0.0 g/l |
| Bio-based carbon content (ASTM D6866) | 21% |
