J-CORE for Hardtops
Go Beyond Lightweight with the bonding compound specifically made for hardtops and small part sandwich bonds. J-Core reduces the overall weight of your boat and provides and strong, dependable bond.
Taking Hardtops Beyond Light Weight
4501's ultra-light weight makes it the perfect compound for bonding hardtops and small part sandwich-style bonds
Weighing in at the incredible light weight of less than 5 pounds per gallon, you will almost wonder how one of our most popular bonding compounds can possibly be as strong as it is. The secret to J-Core’s success is its unique blend of physical properties. It allows for aggressive material substitutions that can save material and labor costs in almost any application.
Performance Benefits
- Pumps great, and trowels easily
- Flows well under moderate clamping pressure
- Stays put when mold is flipped
- Cures with low exotherm for better cosmetics
- Available in higher viscosities for damming and more
Perfect for Small Part "Sandwich" Bonds
The use of J-Core in small parts with hand laid skins is surprisingly efficient and results in light weight, superb cosmetics and an extremely low number of costly defects requiring repair.
J-Core in Action
Easy to Apply
Pumping J-Core into the hardtop shell
Spreads to Fill
Material flows to fill edges when marrying inner liner
Sandwich Bonds
Great for small part sandwich style bonds
Availability
| Table Header | REGULAR & HIGH VISCOSITIES |
|---|---|
|
J-Core 4501, 4501 HV, AND 4501 XHV Bonding Compounds |
|
|
5 Gal Pail | 55 Gal Drum |
RECOMMENDED FOR
| RECOMMENDED FOR | |
|---|---|
|
Hard Tops |
Other “Sandwich” Bonds |
WORKING PROPERTIES
| GEL TIME | Gel Time | Reaction Time | Fixture Time | Peak Exotherm |
|---|---|---|---|---|
|
28 min |
45 min |
73 min |
150℉ |
TYPICAL PHYSICAL PROPERTIES
| RECOMMENDED FOR | |
|---|---|
|
Color |
White |
|
Odor |
Styrene |
|
Texture |
Smooth |
|
Weight |
4.6 lbs/gallon |
|
Shelf Life |
3 Months |
VISCOSITY
| GEL TIME | RPM | µ Min | µ Max |
|---|---|---|---|
|
2 |
50,000 |
65,000 |
|
|
20 |
18,000 |
28,000 |
TYPICAL CURED PROPERTIES
| GEL TIME | Test | Average | Deviation |
|---|---|---|---|
|
Tensile Elongation |
8.2% |
0.32% |
|
|
Tensile Strength |
1,060 PSI |
108 PSI |
|
|
Flexural Strength |
6,960 PSI |
314 PSI |
|
|
Flexural Modulus |
357,000 PSI |
14,100 PSI |
|
|
Compressive Strength |
1,910 PSI |
52.5 PSI |
|
|
Lap Shear |
1,100 PSI |
11.0 PSI |
|
|
Heat Deflection |
150℉ |
5.0℉ |
|
|
Linear Shrinkage |
<1% |
|
