FM® 94 adhesive is a 220ºF (104°C) service temperature, modified epoxy film adhesive designed for bonding metallic and composite structures. FM® 94 adhesive offers a unique combination of high temperature performance, toughness and moisture resistance as demonstrated by its ability to bond to wet Nomex® honeycomb and retention of shear properties after pre- and post-bond humidity exposure. FM® 94 adhesive is designed for applications demanding the best of both 220ºF (104°C) service temperature and -67ºF (-55°C) peel strength.
For composite and metal bonding applications, FM® 94 adhesive is formulated to exhibit superior elongation, toughness and shear strength properties. The controlled flow characteristics allow for its use in co-cured applications as well as bonding pre-cured structures. Also, FM® 94 adhesive provides excellent electrical insulation between metal and graphite composites, reducing the potential for galvanic corrosion.
For composite and metal bonding applications, FM® 94 adhesive is formulated to exhibit superior elongation, toughness and shear strength properties. The controlled flow characteristics allow for its use in co-cured applications as well as bonding pre-cured structures. Also, FM® 94 adhesive provides excellent electrical insulation between metal and graphite composites, reducing the potential for galvanic corrosion.
Unit of Measure
Characteristics for Physical Properties
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Characteristics for Product Availability
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Characteristics for Physical Properties (BR® 6747-1 Corrosion Inhibiting Primer)
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Recommended Processing Cure Cycle
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Health and Safety
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Surface Preparation
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Lay-Up Procedure
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Disclaimer
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Features and Benefits
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Additional Information
Characteristics for Physical Properties
Shelf Life |
N/A 6 months at or below 40ºF (4ºC) from date of shipment for unsupported forms 12 months at or below 0ºF (-18ºC) from date of shipment for supported forms |
Shop Life at 75 Degree Fahrenheit (ºF) (24 Degree Celsius (ºC)) |
N/A 30 days at or below 75ºF (24°C) |
Maximum Volatiles at 250 Degree Fahrenheit (ºF) (121 Degree Celsius (ºC)) |
N/A 1.0 % |
Test Method for Volatile |
N/A American Society for Testing and Materials (ASTM 3530) |
Characteristics for Product Availability
Nominal Weight1 | N/A 0.03 psf146 g/m² |
Nominal Thickness for 0.030 Pound Per Square Foot (psf) Nominal Weight |
N/A 0.005 in0.13 mm |
Color |
N/A Green |
Roll Width2 | N/A 36 in91 cm |
Roll Length |
N/A 60 yd55 m |
Carrier |
N/A Unsupported |
Characteristics for Physical Properties (BR® 6747-1 Corrosion Inhibiting Primer)
Shelf Life (BR® 6747-1 Primer) |
N/A 12 months at or below 40ºF to 55ºF (4°C to 13°C) from date of shipment 6 months at or below 56ºF to 75ºF (14°C to 24°C) from date of shipment DO NOT FREEZE |
Shop Life at 90 Degree Fahrenheit (ºF) (32 Degree Celsius (ºC)) (BR® 6747-1 Primer) |
N/A 30 days |
Color (BR® 6747-1 Primer) |
N/A Yellow |
Solids Content (BR® 6747-1 Primer) |
N/A 20 %30 % |
Density for 20 Percent (% ) Solids |
N/A 8.78 lb/gal1050 g/L |
Density for 30 Percent (%) Solids |
N/A 9.10 lb/gal1090 g/L |
Recommended Primer Thickness |
N/A 0.10 to 0.30 mil0.0025 to 0.0076 mm |
Recommended Cure |
N/A Airy dry 30 minutes in ambient conditions Cure 60 minutes at 250ºF (121ºC) |
Recommended Processing Cure Cycle
Recommended Processing Cure Cycle |
N/A
Autoclave Cure Cycle Apply full vacuum, 24 in Hg (0.081 MPa) minimum. Apply 40 psi (0.28 MPa) pressure, vent vacuum at 20 psi (0.14 MPa). Heat from 75ºF (24ºC) to 250ºF (121°C) at 2ºF - 5ºF (1°C - 3°C)/minute. Hold at 250ºF (121°C) for 60 minutes. Cool under pressure below 140ºF (60°C) at 2ºF - 5ºF (1°C - 3°C)/minute. |
Health and Safety
Health and Safety |
N/A Please refer to the product SDS for safe handling, personal protective equipment recommendations and disposal considerations. |
Surface Preparation
Non-Metallic Cured Substrates |
N/A
Most high performance composites employ a removable peel ply of nylon or Dacron® fabric. Remove the peel ply and bond immediately. For surfaces without peel ply:
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Aluminum Skins |
N/A A clean, dry, grease-free surface is required for bonding. FM® 94 is used with standard cleaning techniques involving a four step procedure of solvent degreasing, alkaline cleaning, chemical deoxidizing (etching), and phosphoric acid anodizing (Boeing patent 4,085,012. April 1978. Phosphoric acid anodizing is now being used by a large number of aircraft manufacturers due to the improved surface bond durability it provides.). General guidance for etching and phosphoric acid anodizing can be found in ASTM 2651 and ASTM 3433, respectively. Best results for aluminum feature priming after appropriate surface preparation, with BR® 6747-1, BR® 6747-1 NC or BR® 127 primer. |
Primer Application |
N/A
Although not mandatory, BR® 6747-1 or BR® 127 corrosion inhibiting primer are recommended for use with FM® 94 adhesive in the bonding of aluminum details. These primers offers superior durability and resistance to hostile environments within the bond line and also may be used as a protective coating outside the bonded areas. Apply the individual primer as follows:
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Lay-Up Procedure
Lay-Up Procedure |
N/A
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Disclaimer
Disclaimer |
N/A The data and information provided in this document have been obtained from carefully controlled samples and are considered to be representative of the product described. Solvay does not express or imply any guarantee or warranty of any kind including, but not limited to, the accuracy, the completeness or the relevance of the data and information set out herein. Because the properties of this product can be significantly affected by the fabrication and testing techniques employed, and since Solvay does not control the conditions under which its products are tested and used, Solvay cannot guarantee the properties provided will be obtained with other processes and equipment. No guarantee or warranty is provided if the product is adapted for a specific use or purpose. Solvay declines any liability with respect to the use made by any third party of the data and information contained herein. Solvay has the right to change any data or information when deemed appropriate. All trademarks are the property of their respective owners. ©2017, Solvay. All rights reserved. |
Features and Benefits
Features and Benefits |
N/A
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Additional Information
Additional Information |
N/A
FM® 94 film adhesive is manufactured as a supported adhesive, with knit or mat carriers, as well as an unsupported film. When supported with a knit carrier, optimal mechanical properties can be obtained. The random mat provides superior handling characteristics. With the mat carrier, FM® 94 adhesive can be supplied in a one-side tacky (OST) version which helps reduce air entrapment when bonding large metal or composite parts. Typical applications for FM® 94 include bonding of metallic and composite structures. |
- 1 Weight tolerance equals nominal weight ± 0.005 psf (± 24 gsm)
- 2 Available in slit form. Please contact Solvay for more information.