LORD 3135

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

LORD 3135

Main features

  • Broad Multi-Material Structural Bonding
  • Low-Shrinkage Epoxy System
  • Documented NASA/MMM-A-134/MIL-A-8623A Compliance

Product Description

LORD® 3135-A/3135-B Epoxy Adhesive is a two-component epoxy structural adhesive for bonding most metals, wood, glass, concrete, masonry and various synthetic materials. It is particularly suited to bonding skins to plastic or metal honeycomb cores, polyurethane foams, and phenolic or epoxy laminates. The system supports room-temperature or accelerated heat curing and develops high-strength bonds with bondline flexibility, low cure shrinkage, good electrical resistance, and resistance to mechanical impact, shock and solvents.

Key Features

  • Broad substrate adhesion to metals, wood, glass, concrete, masonry and supported synthetic materials.
  • Low-stress structural bonding with low cure shrinkage, bondline flexibility and good electrical resistance.
  • Qualified performance meeting NASA Low Outgassing Specification, MMM-A-134 Type 1 and 2, and MIL-A-8623A Type 1 and 2 requirements.
  • Flexible curing options including approximately 24 hours at 77°F (25°C) or supported accelerated heat-cure schedules.

Applications / Suitable for

  • Bonding skins to plastic or metal honeycomb cores
  • Polyurethane foam bonding
  • Phenolic and epoxy laminate bonding
  • Structural bonding of metals, wood, glass, concrete, masonry and supported synthetic materials
Product Family

LORD 3135

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
3135-A & 3135-B Resin/Hardener: Amber Liq
Density
Volumetric mass per unit
Resin: 1.17 | Hardener: 0.96 kg/m3
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
Resin: 12,000 - 14,500 | Hardener: 25,000 - 50,000 mPa.s
Thermal Properties
Flash Point
The flashpoint of a solvent is the lowest possible temperature at which it can vaporize to form an ignitable vapor. Flashpoint is often confused with “autoignition temperature”, which is the temperature at which a solvent ignites without an ignition source.
Resin: >93 | Hardener: >93 °C

Additional Information

Technical Properties

As-Supplied / Before-Processing Properties

Typical component and mixed properties. Values are typical and are not intended for specification purposes.

Property 3135-A Resin 3135-B Hardener Mixed Method / Condition
Appearance Amber liquid Amber liquid Straw yellow liquid Typical
Viscosity 12,000–14,500 cP 25,000–50,000 cP — Brookfield at 77°F (25°C)
Density 9.75 lb/gal
(1.17 g/cm³)		 8.01 lb/gal
(0.96 g/cm³)		 — Typical
Flash Point ≥201°F
(≥93°C)		 ≥201°F
(≥93°C)		 — Closed cup
Mix Ratio 1 part 1 part 1:1 Resin to hardener, by weight
Solids Content — — 100% Mixed adhesive
Recommended Induction Period — — 15 minutes After mixing and before application
Working Time — — 1.5–3 hours At 77°F (25°C)
Time to Handling Strength — — 8–12 hours Typical
Suggested Bondline Thickness — — 2–5 mil
6–10 mil		 Non-porous surfaces
Porous surfaces
Shelf Life 2 years 2 years — Store at 73°F (23°C) in a clean, dry environment in original, unopened containers
Technical Properties

After-Processing / Final-State Properties

Typical cured properties. Values are typical and are not intended for specification purposes.

Property Value Unit Method / Condition
Cure to Full Strength 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)
Lap Shear Strength after Humidity Exposure 3900
(26.9)		 psi
(MPa)		 At 75°F (24°C) after 720 hours at 100% RH and 161°F (72°C)
Lap Shear Strength after Salt Spray Exposure 3200
(22.1)		 psi
(MPa)		 At 75°F (24°C); salt spray exposure per MIL-A-005090C and Federal Test Method Standard 152

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