LORD 7545A/B

Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.

LORD 7545A/B

Main features

  • Non-Sag Urethane Bonding
  • 3 to 5-Minute Working Window
  • 30-Minute Handling Time

Product Description

LORD® 7545-A/B Urethane Adhesive is an equal-mix, two-component structural urethane adhesive system for bonding fiberglass-reinforced plastic (FRP), sheet molding compound (SMC), other plastics, primed metals and supported dissimilar substrates. The 100% solids system has non-sag paste rheology for bead placement on vertical and overhead joints. When paired with LORD® 7545-B curative, it provides a 3–5 minute working time and reaches handling strength in approximately 30 minutes at 75°F (24°C).

Key Features

  • Equal-volume mixing at a 1:1 resin-to-curative ratio for cartridge or meter/mix/dispense processing.
  • Fast A/B processing window with a 3–5 minute working time and approximately 30-minute handling time at 75°F (24°C).
  • Non-sag, environmentally resistant system that maintains bead placement and resists weathering, humidity, salt spray and solvents after cure.

Applications / Suitable for

  • FRP and SMC structural bonding
  • Plastic-to-plastic assemblies
  • Composite or plastic bonding to primed metals
  • Vertical, overhead and supported mixed-material joints
Product Family

LORD 7545A/B

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
A (Resin)/ B(Curative): Brown/Black Paste
Density
Volumetric mass per unit
A (Resin): 1498 -1534 | B(Curative): 1294 -1342 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
A (Resin): 25,000 - 70,000 | B (Curative): 230,000 - 650,000 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.
A (Resin)/ B(Curative): >93 °C

Additional Information

Technical Properties

As-Supplied / Before-Processing Properties

Typical component and mixed-system properties for LORD® 7545-A/B Urethane Adhesive. Values are typical and are not intended for specification purposes.

Property 7545-A Resin 7545-B Curative Mixed System Method / Condition
Appearance Brown paste Off-white or black paste — Typical
Viscosity 25,000–70,000 cP 230,000–650,000 cP — Brookfield at 77°F (25°C)
Density 12.5–12.8 lb/gal
(1498–1534 kg/m³)		 10.8–11.2 lb/gal
(1294–1342 kg/m³)		 — Typical
Flash Point >200°F
(>93°C)		 >200°F
(>93°C)		 — Closed cup
Mix Ratio 1 part 1 part by volume
0.87 part by weight		 1:1 by volume
1:0.87 by weight		 Resin to curative
Solids Content by Weight — — 100% Mixed adhesive system
Working Time — — 3–5 minutes At 75°F (24°C); LORD® 7545-A/B configuration
Time to Handling Strength — — 30 minutes At 75°F (24°C); LORD® 7545-A/B configuration
Recommended Bondline Thickness — — 10–40 mil
(254–1016 µm)		 For optimum adhesion
Shelf Life 6 months 6 months — Store unopened at or below 77°F (25°C)
Technical Properties

As-Supplied / Before-Processing Properties

Typical component and mixed-system properties for LORD® 7545-A/B Urethane Adhesive. Values are typical and are not intended for specification purposes.

Property 7545-A Resin 7545-B Curative Mixed System Method / Condition
Appearance Brown paste Off-white or black paste — Typical
Viscosity 25,000–70,000 cP 230,000–650,000 cP — Brookfield at 77°F (25°C)
Density 12.5–12.8 lb/gal
(1498–1534 kg/m³)		 10.8–11.2 lb/gal
(1294–1342 kg/m³)		 — Typical
Flash Point >200°F
(>93°C)		 >200°F
(>93°C)		 — Closed cup
Mix Ratio 1 part 1 part by volume
0.87 part by weight		 1:1 by volume
1:0.87 by weight		 Resin to curative
Solids Content by Weight — — 100% Mixed adhesive system
Working Time — — 3–5 minutes At 75°F (24°C); LORD® 7545-A/B configuration
Time to Handling Strength — — 30 minutes At 75°F (24°C); LORD® 7545-A/B configuration
Recommended Bondline Thickness — — 10–40 mil
(254–1016 µm)		 For optimum adhesion
Shelf Life 6 months 6 months — Store unopened at or below 77°F (25°C)

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