Flex Test Chart
Polyurethane Fiberglass reinforced Foam Properties
Test Sample Reinforcement Schedule
 |
U15 |
- |
Unreinforced 15 lb/ft3 (240 kg/m3) Material |
 |
U20 |
- |
Unreinforced 20 lb/ft3 (320 kg/m3) Material |
 |
U25 |
- |
Unreinforced 25 lb/ft3 (400 kg/m3) Material |
 |
R15 |
- |
15 lb/ft3 (240 kg/m3) Material twice reinforced with 2415 fiberglass |
 |
R20 |
- |
20 lb/ft3 (320 kg/m3) Material twice reinforced with 2415 fiberglass |
 |
R25 |
- |
25 lb/ft3 (400 kg/m3) Material twice reinforced with 2415 fiberglass |
Tests were performed on a 17" (431.8 mm) long and 1-1/2" (38.1 mm) thick KAY‑CEL samples with the above physical properties.
The chart above shows how Fiberglass reinforcement increases the strength of KAY‑CEL CORE by 300%.
Contact Kayco for additional test sheets.
Polyurethane Unreinforced Foam Properties
Density |
Max Service Temperature |
"K" Factor Thermal Conductivity |
"R" Factor |
Coefficient of Linear Expansion |
Dielectric Constant |
Dissipation Factor |
Water Absorption |
lb/ft3 (kg/m3) |
°F (°C), Dry |
BTU/ft2/hr/°F/in (ASTM D2326) |
for 1" (x2-2") |
105in/in/°F (ASTM D696) |
(ASTM D1673) |
at 20°C and 1 meg |
% by vol. (96 hrs) (ASTM D2842) |
9-12 (144-192) |
200 (93) |
0.31-0.35 |
3.24-2.86 |
4 |
1.2 |
0.0032 |
0.5 |
13-18 (208-288) |
200 (93) |
0.36-0.40 |
2.78-2.50 |
4 |
1.3 |
0.0055 |
0.4 |
19-25 (304-400) |
200 (93) |
0.42-0.52 |
2.39-1.92 |
4 |
1.4 |
-- |
0.2 |
The chart above shows how marine plywood loses 60% of its strength after being submerged for 24 hours.
Call for Recommended Adhesive Suppliers
General guidelines when using Kay-Cel Core
- Store Kay-Cel Core material indoors or protect from sunlight.
- Can be cut with normal woodworking tools.
- Wear dust mask, eye protection, and gloves when cutting.
- Can be use with a wide variety of resins.
- Do Not burn material.
- Best practices:
- Maintain dry, clean surface for maximum bonding.
- Pre-wet boards with resin before applying fiberglass.
- Remove any release agensts or shiny spots before bonding.
- Please contact the Kayco Composites Team if you have any questions!
For additional information and product specific datasheets, please Contact us.