1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 2 2015 01 30 Re-activate R. Thomas NA 2013 12 12 N-Status N Status, No replacement named. L.Sinclair, NA 1996 09 04 Activated A. Novakovic, K. Gribb Controlled document at www.MATS Copyright 2015, Ford Global Technologies, LLC Page 1 of
2、3 ADHESION REQUIREMENTS, BONDING ELASTOMERS TO WSS-M11P61-A RIGID SUBSTRATES, ENGINE MOUNT APPLICATIONS 1. SCOPE This specification defines the adhesion requirements of bonding systems used for attaching elastomers to rigid substrates. 2. APPLICATION This specification was released originally for ad
3、hesive systems used to structurally bond natural rubber to uncoated HRLC steel during fabrication of engine mounts. Compliance with this performance specification does not guarantee an adhesive system will function for all potential applications on a vehicle. The specific design condition should be
4、evaluated by a functional trial or laboratory simulation prior to release. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements for Production Materials (WSS-M99P1111-A). 3.2 ADHESION TESTS, STANDA
5、RD SPECIMENS (ASTM D429, Method B) Adhesion values and failure mode percentages shall be obtained from 45 degree or 90 degree stripping tests performed on bonded specimens. At least 3 specimens shall be subjected to each of the following test conditions. The average adhesion (in N/mm) in the as-rece
6、ived condition and tested at 23 C shall be considered the original adhesion value. The averaged adhesion values for every other test condition described under paragraph 3.2 shall be reported as a percentage of the original value. TEST CONDITIONS ADHESION FAILURE MODE 3.2.1 Test at 23 +/- 2 C No Requ
7、irement (original) R-90 min (Worst Case) 3.2.2 Test at -40 +/- 2 C min 50% of original R-75 min (Worst Case) 3.2.3 Test at 100 +/- 2 C min 50% of original R-75 min (After 16 h at temp) (Worst Case) 3.2.4 After 240 h of Salt Spray min 50% of original R-50 min per ASTM B117 (Worst case) 3.2.5 After 16
8、8 h of Heat Aging min 50% of original R-75 min At 100 +/- 2 C (Worst Case) per ASTM D573 ENGINEERING MATERIAL SPECIFICATION WSS-M11P61-A Copyright 2015, Ford Global Technologies, LLC Page 2 of 3 3.2.6 After 168 h immersion min 50% of original R-50 min In hydraulic fluid at 125 C (Worst Case) per AST
9、M D471 NOTE: The requirements of section 3.2.6 apply only to adhesive systems used in the fabrication of hydraulic engine mounts. 3.3 ADHESION TESTS, COMPONENT PARTS (ASTM D429, Method B) Adhesion values and failure mode percentages shall be obtained from component testing whenever feasible. Tensile
10、 tests shall be performed on bonded, production-representative components in accordance with test methods specified for that part (usually on the part print). Adhesion values shall be reported as percentages of minimum draw pull load requirements specified for that part. At least 3 specimens shall b
11、e subjected to each of the following test conditions. TEST CONDITIONS ADHESION FAILURE MODE 3.3.1 Test at 23+/- 2C 100% R-50 min (Worst Case) 3.3.2 Test at -40+/- 2C 50% R-50 min (Worst Case) 3.3.3 Test at 100+/- 2C 50% R-50 min (After 16 h at temp) (Worst Case) 3.3.4 After 240 h of Salt Spray 50% R
12、-50 min Per ASTM B 117 (Worst case) 3.3.5 After 168 h of Heat Aging 50% R-50 min At 100 +/- 2C (Worst Case) Per ASTM D 573 3.3.6 After 168 h immersion 50% R-50 min In hydraulic fluid at 125 +/-2C (Worst Case) Per ASTM D471 NOTE: The requirements of paragraph 3.3.6 apply only to adhesive systems used
13、 in the fabrication of hydraulic engine mounts. 3.4 If agreed upon by the responsible releasing activity, requirements described in paragraph 3.4 for standard specimens may be omitted if the requirements described in paragraph 3.5 for component parts are met. 4. GENERAL INFORMATION The information g
14、iven below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 4.1 This specification requires identification of all materials which are part of a specific bonding system. This includes
15、 the hydraulic fluid (engine mount fluid-usually glycol-based) for bonding systems used in the fabrication of hydraulic engine mounts. The intent is to uniquely identify the bonding system without compromising processes, conditions or compounds considered proprietary by the supplier. ENGINEERING MAT
16、ERIAL SPECIFICATION WSS-M11P61-A Copyright 2015, Ford Global Technologies, LLC Page 3 of 3 Bonding systems shall be characterized as low-strength (less than 5 N/mm), medium-strength (between 5 and 10 N/mm) or high- strength (greater than 10 N/mm) so that design engineers may readily evaluate the suitability of a particular bonding system to specific applications. 5. SUMMARY OF REVISIONS 2015 01 30 Re-activated and reformatted. Minor revisions to the text, no significant technical changes. 2013 12 12 N-Status
