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Directions For Use
SURFACE PREPARATION TO PREVENT ADHESION:
To prevent adhesion to the mold, use a GREASE IT release
agent. The following are recommended; GREASE IT II, GREASE IT IV,
GREASE IT V, GREASE IT FDG,
GREASE IT WAX P, or GREASE IT WAX L. For best
results, apply in a few thin coats, drying between coats. Porous surfaces, i.e. wood, plaster, etc, must be sealed
thoroughly before release is applied. Use multiple coats of a good coating, such as: a high-grade lacquer or urethane
lacquer.
SURFACE PREPARATION FOR ADHESION:
For applications where adhesion is desired, the surface must be cleaned, abraded and dried. Sandblasting and mechanical
roughing are the preferred ways of abrading surfaces to be bonded.
For added adhesion to metals, use Primer 200 and
for added adhesion to plastic, use Primer 800.Make sure all surfaces are clean, dry and free from moisture.
AIR RELEASE:
Use HAPCO'S ANTI-AIR to aid in air release (see Technical Bulletin). In some products, ANTI-AIR can cause a slight
haze to cloudiness.
This has no effect on properties.
MIXING:
IMPORTANT:
Before each use, mix Part B thoroughly before proportioning out the required amount. Components may separate and should be mixed before each
use. Mix, only when ready to use, by adding the curing agent to the
resin portion and blending together thoroughly. Be sure to scrape and
stir in all material sticking to the sides and bottom of the mixing
container. For best results, use plastic or coated containers, and metal
or plastic sticks.
MACHINE MIXING AND DISPENSING:
Use HAPCO'S
RAPIDFIL,
MINIFIL
and/or
RAPIDSHOT Dispensing Equipment for fast, reliable, and efficient dispensing.
SURFACE
COATS:
Brush apply a first coat of HAPCOAT surface
coat, taking care to eliminate all trapped air bubbles. Use a hair dryer,
moving quickly over the surface, while brushing to help eliminate air
bubbles. Take care to eliminate surface air. Allow to tack up, and brush
on a second coat of Hapcoat. After the second coat tacks up, apply the
backup
TACK-UP
TIME:
Time to reach the soft gel
time or "bubble gum" stage after application. Surface coat
will be tacky to the touch and leave a fingerprint. This is ideal for
casting and/or laminating. If the surface coat cures beyond this point,
sanding will be required to insure good adhesion of the backup polymer.
CURE
CYCLE:
Most polymers require
several days to fully cure, but cure times indicate the time to achieve
hardness and time to permit handling. Post cures are for those hardeners
requiring heat cure, however, all room temperature curing systems may
also be post cured 2-3 hours at 150-175°F to accelerate cure time
and/or achieve optimum cured properties.
SERVICE
TEMPERATURE:
These are average
temperatures for each type of hardener system & may vary up or down
depending on actual operating conditions. Consult your local
representative for performance results in your particular application.
COVERAGE:
HAPCOAT materials are available in convenient,
safe, pre-measured containers in the following kit sizes:
Kit Size Approximate Coverage Rate
1/2 pint kits
200 square inches
Pint kits
400 square inches
Quart kits
800 square inches
Gallon kits
3200 square inches
SHRINKAGE:
Shrinkage or dimensional variation is largely influenced by 5 factors:
1. Mass ( total volume and thickness)
2. The temperature of the material
3. Maximum temperature reached during the exotherm (reaction). The faster the
material, the higher the exotherm, the greater the shrinkage.
4. The temperature of the mold
5. The stability of the mold
Geometry, part thickness, and total volume vary in each design, therefore,
the customer is responsible to test
and determine the shrinkage factor to be used. The values in the brochures are for comparative reference only,
using ASTM testing procedures.
CLEAN
UP:
Cured
polymers are most difficult to remove. It is best to clean tools and
equipment immediately after use. Use
Hapco’s A-TAK for best results.
STORAGE:
Polymer systems have a minimum shelf life of six months when unopened. Both components should be stored in a room
temperature dry place.
When not in use, containers should be kept tightly closed. (see Resealing)
RESEALING:
Many polymers are moisture sensitive, reseal, using one of the following two (2) methods: blanket with nitrogen
or use a hair dryer for 30 seconds to cover with dry air.
PRECAUTIONS:
Skin or eye contact with polymers should be avoided. Clean housekeeping procedures are urged and the use of gloves
and/or protective creams suggested. All polymers, as a general practice, should be used in well-ventilated areas.
Spot ventilation is most effective. Contaminated clothing should be removed immediately and the skin washed with
soap and water or waterless skin cleaner. Should accidental eye contact occur, wash thoroughly with water and consult
a physician.
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