PERMABOND® TA435 is a structural acrylic adhesive designed primarily for bonding metals, ferrites, ceramics and some thermoplastics. This adhesive may be used in a variety of structural bonding applications, due to its versatile performance capabilities.
TA435 provides high strength while maintaining excellent flexibility, resulting in tough, durable bonds with outstanding impact and peel resistance. Handling strength is achieved in a few minutes at room temperature by using Permabond Initiator 41.
FEATURES AND BENEFITS
- Adhesion to a wide variety of substrates
- Fast cure at room temperature
- No mix application
- High shear and peel strength
- Good impact strength
- Good chemical resistance
Physical Properties of Uncured Adhesive
Chemical composition |
Modified acrylic – solvent free |
Appearance |
Transparent amber liquid |
Viscosity @ 25°C |
20rpm: 30,000 – 60,000 mPa.s (cP) 2.5rpm: 60,000 – 120,000 mPa.s (cP) |
Specific gravity (resin) |
1.0 |
Typical Curing Properties (with Initiator 41)
Ratio of use |
10:1.5 approximately |
Maximum gap fill |
0.5 mm (0.02 in) |
Fixture time (zinc) @23°C* |
1-2 mins |
Handling time (zinc) (0.3 N/mm² shear strength is achieved) @23°C* |
3-5 mins |
Working strength (zinc) @23°C* |
30-60 mins |
Full cure @23°C |
24 hours |
Typical Performance of Cured Adhesive
Shear strength (ISO4587)* |
Mild steel: 15-25 N/mm² (2200-3600 psi) Zinc: 10-15 N/mm² (1450-2200 psi) |
Peel strength (aluminium) (ISO 4578) |
85-100 N/25mm (18-22 PIW) |
Tensile strength (ISO37) |
25N/mm² (3600 psi) |
Impact strength (ASTM D-950) |
15-20 kJ/m² |
Coefficient of thermal expansion (ASTM D-696) |
80 x 10-6 1/K |
Thermal conductivity (ASTM C-177) |
0.1 W/(m.K) |
Dielectric constant (ASTM D-150) |
4.6 |
Dielectric strength (ASTM D-149) |
30-50 kV/mm |
Volume resistivity (ASTM D-257) |
2 x 1013 Ohm.cm |