ARALDITE® AW 4510 / HARDENER HW 4511-1

• Temperature resistant up to 180°C
• Excellent resistance to most common chemicals
• Non flowing paste for ease of application
• Gap filling
• Bonds a wide range of substrate materials
• Post cure recommended for optimum properties

• The resin/hardener mix is applied directly or with a spatula, to the pretreated and dry joint surfaces.
• A layer of adhesive 0.05 to 0.10mm thick will normally impart the greatest lap shear strength to the joint.
• 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.

Typical Cured Properties

• 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 strips of aluminium alloy. The joint area was 12.5 x 25 mm in each case.
• The figures were determined with typical production batches using standard testing methods. They are provided solely as technical information and do not constitute a product specification.

Average lap shear strengths of typical metal-to-metal joints (ISO 4587) (typical average values)

• Cured for 24 hours at 23°C + 1 hour at 130°C and tested at 23°C
• Pretreatment - Sand blasting

Average lap shear strengths of typical plastic-to-plastic joints (ISO 4587) (typical average values)

• Cured for 24 hours at 23°C + 1 hour at 130°C and tested at 23°C
• Pretreatment - Lightly abrade and alcohol degrease.

Lap shear strength versus temperature (ISO 4587) (typical average values)

• Cure: 24 hours at 23°C + 1 hour at 130°C

Lap shear strength versus immersion in various media (typical average values)

• Unless otherwise stated, L.S.S. was determined after immersion for 90 days at 23°C
• Cure: 24 hours at 23°C + 1 hour at 130°C

Lap shear strength versus tropical weathering (typical average values)

• 40°C / 92% Relative Humidity
• Cure: 24 hours at 23°C + 1 hour at 130°C and test at 23°C

DMA (typical average values)

• Cure: 24 hours at 23°C + 1 hour at 130°C

Glass transition temperature (Tg) (typical average value) - 135°C by DMA

Pretreatment

• The strength and durability of a bonded joint are dependent 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 proprie- tary 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 (“pick- ling”) the degreased surfaces.
• Abrading should be followed by a second degreasing treatment

Resin and hardener should be mixed together at room temperature stirring thoroughly.

Mechanical processing

• Specialist firms have developed metering, mixing and spreading equipment that enables the bulk processing of adhesive.

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 cure requirements

• To achieve optimum performance properties an elevated temperature cure or post cure is recommended.
• Lap shear strength of 1 MPa represents a strength where careful handling of the bonded object is possible.
• This adhesive will not fully cure at temperatures below 60°C.
• Suggested cure schedules are: 8 hrs. at 80°C or 1 hr. at 130°C or 30 min. at 150°C

       Storage

• Araldite® AW 4510 with HW 4511-1 hardener may be stored at room temperature, provided storage is in original sealed containers.

      Handling Precautions

• Our products 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 food- stuffs 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. Disposa- ble paper - not cloth towels - should be used to dry the skin.
• Adequate ventilation of the working area is recommended.