1. Description
J-31 heat-resistant adhesive is Two-component epoxy paste adhesive cured
in medium temperature. When fully cured the adhesive will have high
temperature resistance, high shear strength. It is suitable for bonding a variety
of heat-resistant parts, and for potting, casting electronical components. It
can be also used for making high temperature Resistance mode and clamping
fixture. And also bonding Magnetic Abrasive and so on.
2. Specification
Main Ingredients: Modified epoxy
Appearance: Part A(modified epoxy) is translucent light yellow viscous liquid
Part B(hardener) is light-yellow solid.
Typical product data:
| Temperature |
-55 degree C |
20 degree C |
200 degree C |
| Shear strength, MPa |
> 30.0 |
>20.0 |
>5.0 |
| Pulling away from the non-uniform strength, N/cm |
|
>300 |
|
* Adhesion material is LYl2CZ Aluminum Alloy, the surface was treated by oxidation process
after being polished.
3. Processing
3.1 Pretreatment of joint surface
• Aluminum Alloy (LY12CZ)
After degreasing by Trichlorethylene steam bath, rough the surface by using
80 mesh sandpaper, treat with chromic acid for 10 minutes at 60 ± 5 ℃ for 10
minutes, Clean surface with water and dry at 60 ± 5 ℃. The bonding part
should be used out within eight hours. The surface also can be treated by
chromic acid or phosphoric acid anodized.
• Stainless steel, carbon steel
Blow the surface after degreasing by Trichlorethylene steam bath.
• Graphite products, ceramics, carbon fiber products
Roughing the surface by sandpaper before bonding.
3.2 Refining adhesive
Mixing proportion: A:B=100:40 (by weight)
Preheat Part A to 60 ~ 70 ℃ before mix them.
Resin and hardener should be blended until they form a homogeneous mix.
The adhesive should be used out during 8 hours after mixing at room
temperature.
3.3 Adhesive dispensing
On the treated dry and clean bonding surface, spread a thin layer of J-31 on
the surface.
The usage of J-31 is 250~300g/m2. A syringe can be used for dispensing.
Please note not to let air come into adhesive.
During dispensing process, wipe the glue tumor immediately once it overflows
from the bonding joints.
3.4 Curing
After dispensing process, J-31 could be cured immediately. The joint
components should be assembled and clamped as soon as the adhesive has
been applied. An even contact pressure throughout the joint area will ensure
optimum cure. Electric blanket, oven, autoclave, infrared light or radar-type
heater, as well as other appropriate heating methods, could be used for
curing. Curing temperature is 180℃ for two hours.
After the about drying process, wait till room temperature, take out the
workpiece and let it naturally aged for at least 24 hours.
4. Application
• Used in bonding grinding and seal coating to FRP in BAY engine.
• Used for making Magnetic mold material.
• Bonding and potting for a variety of heat-resistant materials.
5. Packing
A, B two parts packed respectively in 1kg iron drum.
Outside packing: Cartons or boxes.
6. Transport
J-31 is solvent free adhesive. It is not considered hazardous and therefore
isnot regulated by DOT or IATA.
7. Storage
Keep in a cool, dark, dry place.
Keep away from heat.
J-31 and hardener may be stored for up 1 year at room temperature provided
that the components are stored in sealed containers.
8. Caution
Our product are generally quite harmless to handle provided that certain
precautions normally taken when handling chemicals are observed. The
uncured materials must not, for instance, be allowed to come into contact with
foodstuffs or food utensils, and measures should be taken to prevent the
uncured materials form coming in contact with skin, since people with
particularly sensitive skin may be affected. The wearing of impervious rubber
or plastic gloves will normally be necessary; likewise the use of eye
protection. The skin should be thoroughly cleansed at the end of each working
period by wash with soap and warm water. The use of solvents is to be
avoided. Disposable paper-not cloth towels should be used to dry the skin.
Adequate ventilation of the working area is recommended.
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