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.
Technical Specifications
No specifications available.
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 |
