ARALDITE® 1570 FST A/B

• Outstanding FST properties (complying with FAR 25.853)
• Semi-rigid adhesive with high elongation at break
• Long pot life at RT
• Suitable for structural application on metal or plastic substrates
• Non halogenated
• Dark grey paste
• Thermoplastic Bonding
• RT cure

• Two component epoxy adhesive
• Flame retardant
• Room temperature curing

• Two component epoxy adhesive
• Meets FST Requirements - Self Extinguishing
• Room temperature curing

Application

• The resin/hardener mix may be applied manually or robotically to the pretreated and dry joint surfaces.
• Huntsman's technical support group can assist the user in the selection of an suitable application method as well as suggest a variety of reputable companies that manufacture and service adhesive dispensing equipment.
• A layer of adhesive 0.05 to 0.10 mm thick will normally impart the greatest lap shear strength to the joint.
• Huntsman stresses that proper adhesive joint design is also critical for a durable bond. The joint components should be assembled and secured in a fixed position as soon as the adhesive has been applied.
• Bonding of Aircraft interior - flooring parts. PE foam to phenolic GRP bonding in cargo areas.
• Bonding of sound attenuation panels into cargo liners significantly reducing noise and vibration

Pretreatment
 

• The strength and durability of a bonded joint are dependant on proper treatment of the surfaces to be bonded.
• At the very least, joint surfaces should be cleaned with a good degreasing agent such as acetone or other proprietary degreasing agents in order to remove all traces of oil, grease and dirt. Alcohol, gasoline (petrol) or paint thinners should never be used.
• The strongest and most durable joints are obtained by either mechanically abrading or chemically etching (“pickling”) the degreased surfaces. Abrading should be followed by a second degreasing treatment.

• All tools should be cleaned before adhesives residues have had time to cure.
• The removal of cured residues is a difficult and time-consuming operation.
• If solvents such as acetone are used for cleaning, operatives should take the appropriate precautions and, in addition, avoid skin and eye contact.

Recommended cure cycle
- 48 hrs at 23°C
- 90 minutes at 60°C

Lap Shear Strength on Aluminium (ISO 4587) (typical average values)

Tested on chromic acid etched Al 2024 T3, Cure cycle: 48 hrs at 23°C

Lap Shear Strength of typical plastic-plastic joints (ISO 4587) Cure cycle: 48 hrs at 23°C (typical average values)

- Glass transition temperature Cure cycle: 48 hrs at 23°C,  ca. 60°C

- Flammability (typical average values) / Cure cycle: 4 hrs at 60°C

- Test Method : Bunsen Burner Test, Vertical - 60s Ignition Time Standard : FAR 25.853 (a) / AITM 2.0002A

- Smoke density (typical average values) / Cure cycle: 4 hrs at 60°C

Test Method : Smoke density, Flaming Mode Standard : FAR 25.853 (c-1) / AITM 2.0007B After 4 minutes, Specific optical smoke density Ds = 46 (maximum limit of 200).

- Smoke toxicity (typical average values) / Cure cycle: 4 hrs at 60°C, Standard : AITM 3.0005 / ABD 0031

ARALDITE® 1570 FST A/B is available in bulk and in cartridges for ease of mixing and application.

When stored in their original sealed containers in a dry place at a temperature within 36ºF (2ºC) and 46ºF (8ºC), ARALDITE® 1570 FST A/B have a shelf-life of 1 year. Do not expose containers to any direct heat source.

• ARALDITE® 1570 FST A and ARALDITE® 1570 FST B must be stored for up to 1 year at (+2 / +8)°C and must be stored in sealed containers.
• The expiry date is indicated on the label.
• Keep containers in dry atmosphere, avoid exposure of the containers to moisture and direct sources of heat.

• It is 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 from coming in contact with the 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 washing 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.