3

Structural Core SpliceAdhesives

Introduction

3M™ Scotch-Weld™ Structural Core Splice Adhesives AF 3028 and AF 3028 FR

are 250°F to 350°F (121°C to 176°C) curing, low density, expandable core splice

adhesive films. AF 3028 and AF 3028 FR were designed for filling mismatch areas or

reinforcing and splicing honeycomb core.

Advantages

• Expands during cure for void filling and core splicing

• Low sag during cure

• Low volatile loss during cure

• High performance from -67°F to 350°F (-55°C to 176°C)

• AF 3028 FR has flame retardant properties

• Can be cured/expanded at slow heat up rates

Technical Data

Issue No. 2

Description

AF 3028

AF 3028 FR

Color:

Off White

Off White

Base:

Epoxy

Epoxy

Form:

Unsupported Film

Unsupported Film

Thickness:

50 ± 5 mil

50 ± 5 mil

Weight (approx.):

Expansion Ratio (approx.):

1.9

2.1

Volatile Loss (250°F [121°C] cure):

Less than 1%

Less than 1%

Uncured Density (approx.):

Available as 10" x 24" flat sheets or as rolls in various length and widths.