Product Name
- DISCONTINUED - Araldite 2029-1 Flexible Medium Viscosity Gray Fast Set Polyurethane (PUR) adhesive - Variety of Packaging Sizes
Brief Description
- Araldite 2029-1 was a two-component, gap-filling, cold-curing polyurethane structural adhesive.- It consisted of a grey resin and a beige-colored hardener, which mixed to form a dark grey paste.- This adhesive was known for forming high-strength, rigid bonds, particularly on metal, and was suitable for structural applications.- It offered a medium open time and was designed for joining various substrates, including dissimilar materials.
Popular Applications & Uses
- Structural bonding applications, especially on metals.- Joining dissimilar substrates in various applications.- Carriage floor joint bonding in bus, truck, and rail manufacturing.- Applications in the wind industry requiring medium open time, hole filling, high flexibility, and strength.- General automotive industry applications.
Industries that Commonly Use It
- Transportation/ Specialty Vehicle- General Manufacturing- Metal Fabrication- Energy- Fabrication
Special and Unique Features
- Gap-filling capability up to 4 mm.- Medium open time, allowing for adjustment during assembly.- High strength on metal substrates.- Good adhesion to copper and brass.- High lap shear values on both metal and composites.- Good water and chemical resistance.- Designed for dynamic loading.- Ability to join dissimilar substrates effectively.
Key Properties
- **Adhesive Type:** Two-component, cold-curing polyurethane (PUR) structural adhesive.- **Color (Mixed):** Dark grey paste.- **Viscosity (at 25°C):** Medium viscosity, 60 Pas for both resin and hardener components.- **Pot Life (100g at 25°C):** Approximately 40 minutes.- **Lap Shear Strength (at 23°C):** Greater than 15 MPa.- **Density (Mixed):** 1.32 g/cm³.- **Flexibility:** Flexible properties, making it suitable for applications requiring elastomeric behavior.
Surface Compatibility
- Metals (e.g., aluminum alloy, copper, brass).- Composites.- Plastics (requires proper degreasing).- Optimal bond strength is achieved with proper surface preparation, including degreasing (e.g., with acetone or isopropanol) and mechanical abrading or chemical etching.
Known backups / known substitutes
- Araldite 2040 (Manufacturer's recommended substitute).- Araldite 2051 (Mentioned as a substitute for Araldite 2010-1, but also in the context of Araldite products).- Other Araldite structural adhesives like Araldite 2015, Araldite 2021, Araldite 2050 may be considered depending on specific application requirements, as they are used in similar industrial contexts.
Comparison Note
- Araldite 2029-1 was valued for its balance of flexibility, high strength on metals, gap-filling capabilities, and medium open time, making it suitable for structural applications and joining dissimilar materials where some flexibility and dynamic load resistance were required. Its discontinuation means that substitutes like Araldite 2040 aim to offer comparable performance characteristics, though users should always verify the specific properties and suitability of any replacement adhesive for their particular application.
