ARALDITE® 2012 A/B

• Fast curing
• General purpose
• Low shrinkage
• Bonds a wide variety of materials
• Tough and resilient

• Fast curing
• General purpose
• Low shrinkage
• Bonds a wide variety of materials
• Tough and resilient

Pretreatment

• The strength and durability of a bonded joint are dependent on proper pretreatment 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.
• Low grade 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.

Pretreatment

The strength and durability of a bonded joint are dependent on proper pretreatment 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. Low grade 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.

Application of adhesive

This system is available in cartridges incorporating mixers and can be applied as ready to use adhesive with the aid of the tool recommended by Huntsman Advanced Materials.

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 a 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 (.002 to .004 in) 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.

Equipment maintenance

All tools should be cleaned with hot water and soap 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.

Typical times to minimum shear strength on sandblasted aluminum / contact pressure

Typical Physical Properties

Unless otherwise stated, the data were determined with typical production batches using standard test methods. They are typical values only, and do not constitute a product specification. Unless otherwise stated, the figures given below were all determined by testing standard specimens made by lap-jointing 114 x 25 x 1.6 mm (4.5 x 1 x .063 in) strips of aluminum alloy. The joint area was 12.5 x 25 mm (.5 x 1 in) in each case. Samples were cured at 40°C (104°F) for 16 hours and tested at 23°C (73°F), unless otherwise noted.

Average lap shear strengths, metal-to-metal joints, sand blasting pre-treatment (ISO 4587)

Average lap shear strengths, plastic-to-plastic joints, lightly abraded, alcohol degrease pretreatment (ISO 4587)

Average lap shear strength after immersion in various media (ISO 4587)

Lap shear strength versus tropical weathering** (ISO 4587)

Note: **40 / 92, DIN 50015; Typical average values; test at 23°C

Lap shear strength versus heat aging (ISO 4587) (typical average values)

Lap shear strength versus temperature (ISO 4587)

Note: ** On aluminum. Pretreatment - Sand blasting. Cure: (a) = 7 days at 23°C; (b) = 24 hours at 23°C + 30 minutes at 80°C

Roller peel test (ISO 4578) on etched aluminum

Additional Physical and Electrical Property Data

• This system is available in cartridges incorporating mixers and can be applied as ready to use adhesive with the aid of the tool recommended by Huntsman Advanced Materials.
• 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 a 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 (.002 to .004 in) 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.

• All tools should be cleaned with hot water and soap 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.

• Unless otherwise stated, the data were determined with typical production batches using standard test methods.
• They are typical values only, and do not constitute a product specification.
• Unless otherwise stated, the figures given below were all determined by testing standard specimens made by lap-jointing 114 x 25 x 1.6 mm (4.5 x 1 x .063 in) strips of aluminum alloy. The joint area was 12.5 x 25 mm (.5 x 1 in) in each case.
• Samples were cured at 40°C (104°F) for 16 hours and tested at 23°C (73°F), unless otherwise noted.

Average lap shear strengths, metal-to-metal joints, sand blasting pre-treatment (ISO 4587)

Average lap shear strengths, plastic-to-plastic joints, lightly abraded, alcohol degrease pre-treatment (ISO 4587)
 

Average lap shear strength after immersion in various media (ISO 4587)

Lap shear strength versus tropical weathering** (ISO 4587)

**40 / 92, DIN 50015; Typical average values; test at 23°C

Lap shear strength versus heat aging (ISO 4587) (typical average values)

Lap shear strength versus temperature (ISO 4587)

**On aluminum. Pretreatment - Sand blasting. Cure: (a) = 7 days at 23°C; (b) = 24 hours at 23°C + 30 minutes at 80°C

Roller peel test (ISO 4578) on etched aluminum
 

Keep out of reach of children

ARALDITE® 2012 A/B should be stored in a dry place, in the original sealed containers, at temperatures between 2°C and 40°C (36°F and 104°F). Under these storage conditions, the product has a shelf life of 3 years (from date of manufacture). The product should not be exposed to direct sunlight.

If stored below 60°F, the adhesive should be brought to 60°F - 77°F and conditioned at this temperature for some time prior to use.

• ARALDITE® 2012 A/B should be stored in a dry place, in the original sealed containers, at temperatures between 2°C and 40°C (36°F and 104°F).
• Under these storage conditions, the product has a shelf life of 3 years (from date of manufacture).
• The product should not be exposed to direct sunlight. If stored below 60°F, the adhesive should be brought to 60°F - 77°F and conditioned at this temperature for some time prior to use.