Description
Lord 3135 A/B & 3135/7111 is an epoxy-based, roomtemperature-curing structural adhesive. Most metals, wood, glass, concrete and masonry, and various synthetic materials can be bonded with this adhesive. It provides high strength bonds, with a degree of flexibility in the bondline.
This polymer adhesive comprises two parts: the 3135 A Resin, and the curing agent, 3135 B (7111). These components should be thoroughly mixed in the recommended proportion just prior to use.
In general, this adhesive is characterized by
- Long pot life
- Low rate of shrinkage
- Excellent resistance to mechanical impact, and shock
- Good electrical resistance
- Excellent adhesion to a multitude of substrates
- Good machinability.
Lord 3135 A/B & 3135/7111 is an excellent adhesive for bonding “skins” to plastic or metal honey-comb cores, polyurethane foams, and phenolic and epoxy laminates.
This curing agent, 3135 B (7111), has a very low level of toxicity. It is possible to reduce the viscosity of the curing agent by heating to 65°C. However, warming the material will shorten the pot life of the mixed compound. The curing reaction commences as soon as the parts are mixed together.
Physical Properties (Uncured):
| Color | Straw Yellow |
| Viscosity (cps) @ 24°C | 20,000 to 50,000 |
| Mix Ratio (by Weight) | 1:1 |
| Specific Gravity | 1.09 |
| Pot Life @ 25°C (Working Time – Hours) | 1.5-3 |
| Flash Point | Greater than 225°C |
Mechanical Properties (Cured):
| Chemical Solvent Resistance | Good to Excellent |
| Approximate Heat Distortion Point | 95°C |
| Operating Temperature Limit | 95°C |
| Hardness (Shore D) | 82 |
| Coefficient of Linear Thermal Expansion (in/in/°F) | 3.2 X 10^-5 |
| Compressive Yield Point (psi)
(ASTM S-695) |
10,000 |
| Tensile Ultimate (psi)
(ASTM D-695) |
6,000 |
| Flexural Ultimate (psi)
(ASTM D-790) |
12,000 |
| T Peel @ 25°C
T Peel @ -106°C |
5 lbs. per in.
1 lb per in. |
| Flatwise Tensile @ 25°C (psi)
Flatwise Tensile @ -73°C (psi) |
500 psi
550 psi |
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