ARALDITE® 2023-30 A/B

• 30 minutes open time at RT
• Gap filling up to 30 mm
• Bright grey color, UV stable
• Tough flexible bonds for use in dynamic environments
• Elongation at break of 100%

• Pretreatment: The strength and durability of a bonded joint are dependent on proper pretreatment of the surfaces to be bonded, however the methacrylate adhesives can be used effectively with little surface preparation. Ideally joint surfaces should be cleaned with a good degreasing agent such as acetone, iso-propanol (for plastics) 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.

• Application of adhesive: The resin/hardener mix may be applied manually or robotically to the pretreated and dry joint surfaces. This adhesive system is available in side-by-side cartridges incorporating mixers and can be applied as ready to use adhesive using standard manual, pneumatic or battery dispersers. The cartridges should not be stored or preheated at temperatures above 30°C as it may cause the cartridge to fail and create a leak. The adhesive system can also be applied using a dosing and dispensing equipment which has been designed for methyl-methacrylate adhesives. A layer of adhesive 0.25 mm thick will normally impart the greatest lap shear strength to the joint. The joint components should be assembled and secured in a fixed position within the open time. Warning: because the cure reaction can generate a high amount of heat, it is not recommended to mix amounts above 200 Grams in a container at room temperature.
• 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 MEK 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 aluminium / contact pressure

• The resin Araldite® 2023-30A may be stored during 24 months at 2 - 8°C or 12 months at 8 - 25°C provided the component is stored in the original sealed container. The expiry date is indicated on the label assuming a storage at 2 - 8°C (24 months).
• The Hardener 2023B may be stored during 18 months at 2 - 8°C or 12 months at 8 - 25°C provided the component is stored in the original sealed container. The expiry date is indicated on the label assuming a storage at 8 - 25°C (12 months).
• The cartridges of Araldite® 2023-30 may be stored during 18 months at 2 - 8°C or 6 months at 8 - 25°C provided the components are stored in the original sealed containers. The expiry date is indicated on the label assuming a storage at 2 - 8°C (18 months). The cartridges should never be stored at temperatures higher than 30°C as it may cause a leak.

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 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. These precautions are described in greater detail in the Material Safety Data sheets for the individual products and should be referred to for fuller information.