FM BMI FILM ADHESIVE

Transcription

1 DESCRIPTION FM film adhesive is a next generation high performance BMI adhesive for bonding both composite and metallic structures. This new adhesive provides a unique combination of high Tg, toughness and high temperature shear properties. It is designed for co-cure, co-bond or secondary bonding applications. FM has excellent resistance to pre-bond and post-bond humidity and has good retention of properties up to 232 C (450 F). FM film adhesive delivers excellent tack and drape and has a minimum shop life of 30 days at 24 C (75 F). FM is compatible with Cytec s industry leading CYCOM BMI prepreg and our new CYCOM 5261 toughened BMI prepreg. FM adhesive film can be supplied as a supported (woven glass or glass mat carrier) or unsupported film at various weights and thicknesses. This adhesive film is suitable for bonding of metallic or composite monolithic or sandwich structures. The unsupported adhesive film can be easily reticulated onto perforated skins or honeycomb for acoustic applications. FM adhesive film can be cured at 190 C (375 F) followed by a freestanding post cure at 227 C (440 F) or by following the BMI prepreg cure cycle. FEATURES & BENEFITS Service temperature of 232 C (450 F) dry and 204 C (400 F) wet Suitable for bonding composite monolithic and sandwich structures (good filleting properties) Excellent fracture toughness Excellent resistance to both pre-bond and post-bond humidity Epoxy-like processing with more than 30 days of shop life at 24 C (75 F) Good tack and handling properties Reticulation capability for acoustic applications SUGGESTED APPLICATIONS Co-cure, co-bond and secondary bonding of both composite and metallic structures AEAD

2 CHARACTERISTICS Table 1 Product Description Available as supported film with woven or random mat carrier or as an unsupported film Film Weight psf (gsm) (147) (220) (293) (391) (484) Film Thickness in (mm) (0.127) (0.190) (0.254) (0.330) (0.410) Color Density Shop Life Shelf Life Recommended Storage Yellow Approx g/cc 30 days at 24 C (75 F) 12 months from date of shipment at recommended storage temperature Store at or below -18 C (0 F) PROPERTIES Fracture Toughness Testing Pre-bond Humidity Exposure: Cured skins soaked in 71 C (160 F) water until 1% weight gain then bonded with FM adhesive film Post-bond Humidity Exposure: Bonded specimen exposed for 14 days at 71 C (160 F) and 100% RH Figure 1 Secondary and Co-bonded Specimen with CYCOM 5261 BMI Prepregs: Effect of Pre-bond and Post-bond Humidity Exposure 2

3 Table 2 Composite Bonding Properties: Co-bonded Wide Area Lap Shear with CYCOM 2561 Pre-cured Substrates Average Results, psi (MPa) Lap Shear, psi (MPa) Before Postbond Humidity Exposure After 2 Weeks Exposure at 71 C and 100% RH Tested at 75 F (24 C) 6300 (43.4) - Tested at 300 F (149 C) 5500 (38.0) 5000 (34.0) FM M 0.05 psf tested per Airbus AITM , specimen S7, 20 ply uni-laminate with BMI resin rich peel ply Table 3 Composite Bonding Properties: Secondary Bonded Wide Area Lap Shear with CYCOM 2561 Tape Precured Substrates Average Results, psi (MPa) Lap Shear, psi (MPa) Before Humidity Exposure After 2 Week Exposure at 71 C and 100% RH Tested at -67 F (-55 C) 5200 (36.0) - Tested at 75 F (24 C) 5500 (38.0) - Tested at 300 F (149 C) 5610 (38.7) 4500 (31.0) FM M 0.05 psf tested per Airbus AITM , specimen D13, 20 ply uni-laminate with BMI resin rich peel ply Table 4 Metal Bonding Properties: Lap Shear with Aluminum Substrates Average Results, psi (MPa) Lap Shear, psi (MPa) ASTM D1002 Tested at 75 F (24 C) 3375 (23.0) Tested at 300 F (149 C) 4200 (29.0) Tested at 400 F (204 C) 3900 (27.0) FM M 0.05 psf 2024T3 metal substrates, phosphoric acid anodization, no primer Cure Cycle: 3 F/minute to 375 F, 180 minutes at 375 F, 40 psi pressure, post cured for 4 hours at 440 F Table 5 Honeycomb Properties: Honeycomb Sandwich Peel FM U FM S 0.08 psf Honeycomb Sandwich Peel, in-lb/3in (N) ASTM D1781 Tested at 75 F (24 C) 6 (54) 15 (134) Metal: 2024T3 substrates, PAA anodization, no primer Honeycomb Core: 0.25 in cell, metallic, 8 pcf 3

4 Table 6 Honeycomb Properties: Honeycomb Flatwise Tension FM U FM S 0.08 psf FM M Flatwise Tensile, psi (MPa) ASTM C297 Metal honeycomb/metal skins Tested at 75 F (24 C) 1245 (8.6) 1280 (8.8) - Tested at 300 F (149 C) 1195 (8.2) 1075 (7.4) - Tested at 400 F (204 C) 915 (6.3) 790 (5.4) - Flatwise Tensile, psi (MPa) Glass honeycomb/cycom 5261 skins Tested at -67 F (-55 C) (6.2) Tested at 75 F (24 C) (6.9) Tested at 325 F (163 C) (5.9) Tested at 400 F (204 C) (5.1) Tested at 325 F (163 C) wet (5.4) Honeycomb core: 0.25 in cell, metallic, 8 pcf APPLICATION NOTES Table 7 Process Information Cure Cycle: For co-cured or co-bonded specimens Cure Cycle: For secondary bonded specimens or metal substrates 3 F (1.7 C)/minute to 375 F (191 C), hold 240 minutes at 375 F (191 C) and 80 psi (0.55 MPa) pressure Followed by: Freestanding post cure at 440 F (227 C) for 4 hours Or Follow the BMI prepreg cure cycle 3 F (1.7 C)/minute to 375 F (191 C), hold 240 minutes at 375 F (191 C) and 40 psi (0.28 MPa) pressure followed by freestanding post cure at 440 F (227 C) for 4 hours Prepreg CYCOM 5261 or CYCOM Surface Preparation Metal Substrates 2024-T3 bare Phosphoric Acid Anodization (no primer) Composite Substrates CYCOM Resin Rich Peel Ply 4

5 PRODUCT HANDLING AND SAFETY Cytec Engineered Materials recommends wearing clean, impervious gloves when working with BMI resin systems to reduce skin contact and to avoid contamination of the product. Materials Safety Data Sheets (MSDS) and product labels are available upon request and can be obtained from any Cytec Engineered Materials Office. DISPOSAL OF SCRAP MATERIAL Disposal of scrap material should be in accordance with local, state, and federal regulations. CONTACT INFORMATION GLOBAL HEADQUARTERS Tempe, Arizona tel fax NORTH AMERICA Olean, New York tel fax Winona, Minnesota tel fax Greenville, Texas tel fax EUROPE AND ASIA Wrexham, United Kingdom tel fax Springfield, Massachusetts tel fax Anaheim, California tel fax Cytec Carbon Fibers LLC Piedmont, South Carolina tel fax Östringen, Germany tel fax Havre de Grace, Maryland tel fax Orange, California tel fax D Aircraft Products, Inc. Anaheim, California tel fax Shanghai, China tel fax DISCLAIMER: 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. Cytec Engineered Materials (CEM) 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 CEM does not control the conditions under which its products are tested and used, CEM cannot guarantee that the properties provided will be obtained with other processes and equipment. No guarantee or warranty is provided that the product is adapted for a specific use or purpose and CEM declines any liability with respect to the use made by any third party of the data and information contained herein. CEM has the right to change any data or information when deemed appropriate. All trademarks are the property of their respective owners. 5