LORD 3135-B
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
- Former Lord 7111-B Hardener
- Low-Shrinkage Epoxy Bonding
- Room-Temperature or Accelerated Heat Curing
Product Description
LORD® 7111-B is the former designation for the hardener now identified as LORD® 3135-B. When mixed in equal parts by weight with LORD® 3135-A resin, it forms a two-component structural epoxy adhesive for bonding metals, wood, glass, concrete, masonry and supported synthetic materials. The mixed system is especially suited to bonding skins to plastic or metal honeycomb cores, polyurethane foams, and phenolic or epoxy laminates, with room-temperature and accelerated heat-cure options.
Key Features
- Former LORD® 7111-B designation corresponds to the LORD® 3135-B hardener used with LORD® 3135-A resin.
- Equal-weight mixing with LORD® 3135-A resin produces a 100% solids structural epoxy adhesive.
- Low-stress cured system provides low cure shrinkage, bondline flexibility and good electrical resistance.
- Qualified mixed-system performance meets NASA Low Outgassing Specification, MMM-A-134 Types 1 and 2, and MIL-A-8623A Types 1 and 2 requirements.
Applications / Suitable for
- Use with LORD® 3135-A resin in structural adhesive systems
- Bonding skins to plastic or metal honeycomb cores
- Polyurethane foam bonding
- Phenolic and epoxy laminate bonding
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Thermal Properties
Additional Information
As-Supplied / Before-Processing Properties
Typical properties for LORD® 7111-B, now designated LORD® 3135-B, and supported processing properties of the mixed LORD® 3135-A/B adhesive system.
| Property | Value | Unit | Method / Condition |
|---|---|---|---|
| Current Designation | LORD® 3135-B Hardener | — | Formerly LORD® 7111-B |
| Appearance | Amber liquid | — | Typical, as supplied |
| Viscosity | 25,000–50,000 | cP | Brookfield at 77°F (25°C) |
| Density | 8.01 (0.96) |
lb/gal (g/cm³) |
Typical |
| Flash Point | ≥201 (≥93) |
°F (°C) |
Closed cup |
| Mix Ratio with LORD® 3135-A Resin | 1:1 | by weight | Resin to hardener |
| Recommended Induction Period | 15 | minutes | After mixing and before application |
| Solids Content | 100 | % | Mixed LORD® 3135-A/B system |
| Working Time | 1.5–3 | hours | Mixed system at 77°F (25°C) |
| Time to Handling Strength | 8–12 | hours | Mixed system |
| Mixed Appearance | Straw-yellow liquid | — | LORD® 3135-A resin with LORD® 7111-B / 3135-B hardener |
| Shelf Life | 2 | years | Store at 73°F (23°C) in a clean, dry environment in the original, unopened container |
After-Processing / Final-State Properties
Typical cured-system properties for LORD® 3135-A resin mixed with LORD® 7111-B, now designated LORD® 3135-B hardener.
| Property | Value | Unit | Method / Condition |
|---|---|---|---|
| Full Cure Time | Approximately 24 | hours | At 77°F (25°C) |
| Accelerated Cure | 45 minutes 1 hour 3 hours |
— | At 121°C At 93°C At 65°C |
| Cured Appearance | Amber to clear | — | Typical |
| Volume Resistivity | 1.25 × 1014 | ohm/cm | ASTM D257-252T |
| Coefficient of Linear Thermal Expansion | 57.6 | ppm/°C | Typical |
| Hardness | 82 | Shore D | Typical |
| Dielectric Strength | 460 | V/mil | ASTM D149-44; 60 cycles at room temperature |
| Dielectric Constant | 3.24 | — | ASTM D159-47T; 60 cycles at room temperature |
| Arc Resistance | 78 | seconds | ASTM D495-48T |
| Lap Shear Strength | 3800 (26.2) |
psi (MPa) |
2024-T3 clad aluminum at 75°F (24°C) |
