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Master Bond adhesives

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Lord Adhesives 7800 Fast Cure Urethane Adhesive, 7800A Resin Adhesive System
Categories: Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Adhesive

Material Notes: LORD® 7800 adhesive is an equal-mix, two-component urethane adhesive system used to bond composites, SMC and plastics with little surface preparation. This adhesive will also bond painted metals, such as powder-coated, primed and e-coated. LORD 7800 adhesive system offers a range of working times by shifting between LORD 7800 curatives, accommodating a wide variety of process requirements while retaining the same mechanical and adhesion properties. After opening, protect adhesive from excessive exposure to moisture by installing desiccant cartridges and/or using dry nitrogen as an inert cover.

Features: provides rapid, outstanding cure strength development, allowing for faster manufacturing and processing. low exotherm cure (rate of cure less affected by bondline thickness). allows accelerated cure with low heat up to 220°F (104°C), eliminating quality issues from ‘cold spots’ seen with other adhesives. free of heavy metals. does not contain ozone depleting chemicals. resists weathering, humidity and salt spray. remains in position when applied on vertical or overhead surfaces, allowing for greater process flexibility.

All information provided by Lord.

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Physical PropertiesOriginal ValueComments
Density 11.3 - 11.6 lb/gal
Viscosity Measure 20000 cSt
@Temperature 25.0 °C
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 60Cured, properties are the same regardless of the LORD 7800 curative used
Tensile Strength at Break 20.7 MPaCured, properties are the same regardless of the LORD 7800 curative used; ASTM D 638, modified
Elongation at Break 130 %Cured, properties are the same regardless of the LORD 7800 curative used; ASTM D 638, modified
Modulus of Elasticity 25.0 ksiCured, properties are the same regardless of the LORD 7800 curative used; ASTM D 638, modified
 
Thermal PropertiesOriginal ValueComments
Glass Transition Temp, Tg 47.0 °CCured, properties are the same regardless of the LORD 7800 curative used; ASTM E1640-99, by DMA
Flash Point >= 93.0 °Cclosed cup
 
Processing PropertiesOriginal ValueComments
Shelf Life 6.00 Month
@Temperature 18.0 - 30.0 °C
in original, unopened container
 
Descriptive Properties
AppearanceBlack Liquid

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PLORD9141 / 232529

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