PERMABOND TA4590
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- 15-30 Second Steel Fixture
- 2-3 Minute Working Strength
- Non-Corrosive Copper Bonding
Product Description
Permabond TA4590 is a blue, thixotropic no-mix structural acrylic adhesive used with Permabond Initiator 44. It bonds metals, ferrites, ceramics, and selected thermoplastics, with an acid-free formulation developed for sensitive copper parts and other conductive surfaces. The system fills gaps up to 0.5 mm, fixtures gap-free mild steel in 15-30 seconds at 23 deg C, and reaches working strength in 2-3 minutes. Typical 24-hour shear strength at 25 deg C is 20-25 N/mm2 on steel and greater than 14 N/mm2 on steel-to-ferrite assemblies, where substrate failure was reported.
Key features
- 15-30 Second Fixture: Fixtures gap-free mild steel in 15-30 seconds with Initiator 44.
- 2-3 Minute Working Strength: Develops working strength rapidly at 23 deg C.
- Non-Corrosive Conductive-Surface Bonding: Acid-free formulation supports sensitive copper and conductive surfaces.
Applications
Applications include structural bonding of metals, ferrites, ceramics, selected thermoplastics, and sensitive conductive surfaces with Initiator 44.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Other Properties
Curing Conditions
Mechanical Properties
Thermal Properties
Electrical Properties
Additional Information
As supplied / before processing
Resin values are shown with processing values for use with Permabond Initiator 44.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Blue, thixotropic | As supplied | |
| Viscosity | 15,000-25,000 | mPa s | 20 rpm at 25 deg C |
| Low-shear viscosity | 50,000-120,000 | mPa s | 2.5 rpm at 25 deg C |
| Specific gravity | 1.1 | Resin as supplied | |
| Use ratio | Approx. 10:1.5 | TA4590 adhesive to Initiator 44 | |
| Maximum gap fill | 0.5 | mm | Typical curing property |
| Cure milestones | Fixture: 15-30 seconds; handling: 30-60 seconds; working strength: 2-3 minutes; full cure: 24 hours | Mild steel, no induced gap, at 23 deg C | |
| Storage temperature | 5 to 25 | deg C | Recommended storage range |
After processing / final state
Values are typical for cured adhesive; strength depends on surface preparation, gap, cure, and substrate.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shear strength - steel | 20-25 | N/mm2 | ISO 4587; 24-hour cure at 25 deg C |
| Shear strength - steel to ferrite | >14 | N/mm2 | ISO 4587; 24-hour cure at 25 deg C; substrate failure |
| Shear strength - zinc | 12-18 | N/mm2 | ISO 4587; 24-hour cure at 25 deg C |
| Peel strength - aluminum | 85-100 | N/25 mm | ISO 4578 |
| Tensile strength | 20-30 | N/mm2 | ISO 37 |
| Impact strength | 15-20 | kJ/m2 | ASTM D-950 |
| Dielectric strength | 30-50 | kV/mm | ASTM D-149 |
| Volume resistivity | 2 x 10^13 | ohm cm | ASTM D-257 |
