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.
Control Material Flow with HV & XHV
Perfect for damming areas like equipment and console cut-outs in hardtops when working with J-Core 4501
For 4501 HV (Higher Viscosity) & XHV (Extra High Viscosity), we increased the viscosity of our lightweight hard top bonding compound to give you more flexibility. The higher viscosity allows for daming console and other cutouts to help prevent standard J-Core (4501) from leaking through. This means less finish work after the cure.
Performance Benefits
- Great for damming areas to prevent material flow
- 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
J-Core HV & XHV can also be used in small parts with hand laid skins where more vicosity is required. You’ll still get the light weight, superb cosmetics and low number of costly defects the main product is known for.
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 |
TECHNICAL DATA
4501 HV / XHV
POLYESTER BONDING COMPOUND
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 |
4.5 lbs/gallon |
|
Shelf Life |
3 Months |
VISCOSITY
| GEL TIME | RPM | µ Min | µ Max |
|---|---|---|---|
|
2 |
130,000 |
180,000 |
TYPICAL CURED PROPERTIES
| GEL TIME | Test | Average |
|---|---|---|
|
Tensile Elongation |
6% |
|
|
Tensile Strength |
HV: 1,080 PSI XHV: 1,000 PSI |
|
|
Flexural Strength |
HV: 7,120 PSI XHV: 6,400 PSI |
|
|
Compressive Strength |
HV: 1,850 PSI XHV: 1.500 PSI |
|
|
Lap Shear |
HV: 1,080 PSI XHV: 900 PSI |
|
|
Heat Deflection |
150℉ |
|
|
Linear Shrinkage |
<1% |
