PERMABOND PT328
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- 15-20 Minute Pot Life
- 5 mm Gap Filling
- 12-18 MPa Steel Shear
Product Description
Permabond PT328 is a two-part, room-temperature-curing polyurethane adhesive for bonding metals, plastics, and composites. Its 1:1 mix ratio and 15-20 minute pot life provide time for large-area assembly, while the thixotropic, non-slump rheology supports controlled placement. The material fills gaps up to 5 mm and reaches handling strength on steel in 90-120 minutes at 23 deg C. After cure, it provides 12-18 MPa shear strength on steel together with documented impact and vibration resistance. Applications include large bonded assemblies that require broad substrate coverage and an extended processing window.
Key features
- Large-Area Work Window: Provides a 15-20 minute pot life for extended assembly operations.
- 5 mm Gap Fill: Fills bond gaps up to 5 mm with a 1:1 mix ratio.
- Impact and Vibration Resistance: Cured polyurethane supports assemblies exposed to impact and vibration.
Applications
Applications include large-area bonding of metals, plastics, and composites, including assemblies exposed to impact or vibration.
Technical Specifications
No specifications available.
Additional Information
As supplied / before processing
Part A and Part B values are shown separately; processing values apply after the stated 1:1 mix ratio.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Part A: black; Part B: cream | As supplied | |
| Part A viscosity | 4,000-8,000 | mPa s | At 25 deg C; thixotropic |
| Part B viscosity | 3,000-6,000 | mPa s | At 25 deg C; thixotropic |
| Specific gravity | Part A: 1.25; Part B: 1.45 | As supplied | |
| Mix ratio | 1:1 | By volume | |
| Maximum gap fill | 5 | mm | Typical curing property |
| Pot life | 15-20 | minutes | Typical processing window |
| Full cure | 4-5 days; 30 minutes | At 23 deg C; at 90 deg C |
After processing / final state
Values are typical for cured adhesive; strength varies with surface preparation and bond gap.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shear strength - steel | 12-18 | MPa | ISO 4587 |
| Shear strength - zinc | 5-6 | MPa | ISO 4587 |
| Shear strength - FRP glass epoxy | 5-7 | N/mm2 | ISO 4587 |
| Shear strength - FRP glass polyester | 12-14 | N/mm2 | ISO 4587 |
| Shear strength - carbon fiber | 9-11 | N/mm2 | ISO 4587 |
| Tensile strength | 15-20 | MPa | ISO 37 |
| Elongation at break | <20 | % | ISO 37 |
| Hardness | 60-75 | Shore D | ISO 868 |
