1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 01 2014 01 07 N Status Replace with WSS-M11P28-D R. Harris, NA 2004 12 09 Activated R. J. Harris Copyright 2014, Ford Global Technologies, LLC Page 1 of 4 ADHESION REQUIREMENTS, ADHESIVE FOR BONDING WSS-M11P28-C FRONT LIGHTING LAMP ASSEMB
2、LIES NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines the performance requirements for an adhesive or adhesive system suitable for bonding headlamps and fog lamps. 2. APPLICATION This specification was released originally for an adhesive or an adhesive system used to bond lenses to
3、bodies in the construction of lamp assemblies. Use of thermoplastic sealers and adhesives are not allowed. Materials meeting these performance specifications are identified on the Corporate Approved Source List along with specific substrates for each lamp design. Compliance with these performance sp
4、ecifications does not guarantee the adhesive or adhesive system will function for all potential applications on a vehicle. The specific design condition must be evaluated prior to release of these materials and meet all requirements of the Exterior Lighting SDS. 3. REQUIREMENTS 3.1 STANDARD REQUIREM
5、ENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 ADHESION STRENGTH LAP SHEAR Deformation is identified as crosshead travel at maximum load. Normal (Condition for 30 minutes at Min Loa
6、d, N Min Deformation, % specified temperature prior to test) 3.2.1 Test at 23 +/- 2 C 600 40 3.2.2 Test at 107 +/- 2 C 450 40 3.2.3 Test at -30 +/- 1 C 900 35 Exposed (Environmental Aging in accordance with 3.2.4 3.2.9 after aging condition for 24 h at 23 +/- 2 C) ENGINEERING MATERIAL SPECIFICATION
7、WSS-M11P28-C Copyright 2014, Ford Global Technologies, LLC Page 2 of 4 Min Load, N Min Deformation, % 3.2.4 14 days heat age at 107 +/- 2 C 700 40 3.2.5 14 days humidity 500 40 (38 +/- 1 C and 95 100% R.H.) 3.2.6 14 days water immersion 500 40 at 32 +/- 1 C 3.2.7 Stress Durability, 60 cycles 500 40
8、FLTM BV 101-07, 20% load) 3.2.8 2000 h ultraviolet light 700 40 (SAE J1960, Borosilicate inner and outer filters) 3.2.9 10 thermal cycles: 600 40 (DVM 0010-EX, DVO 19766) Test Method: (ASTM D 3163, D 1002) . The lap shear coupons shall consist of production typical materials. . Clean the surfaces t
9、o be bonded with a hot, soapy water solution. The soap shall be free rinsing, similar to that used for glassware. After cleaning, the coupons are blown dry and aged at 23 +/- 2 C for 24 h to ensure dryness. . Dispense an amount of adhesive into the housing material coupon that will fill a 25 mm over
10、lap with a minimum bond thickness of 0.8 mm. Shim the interface with 0.8 mm wire or glass beads to maintain the required minimum thickness and overlap. Document and record the open time for adhesive being tested, as recommended by the adhesive manufacturer. Apply the lens material coupon onto the ad
11、hesive/housing coupon and remove any excess adhesive. Maintain proper alignment of the assemblies during cure. Document and record the assembly cure schedule as recommended by the adhesive manufacturer. . Test the assemblies at a crosshead speed of 12.7 mm/minute. Note: Proper alignment of the test
12、assembly is critical. Every effort should be made to maintain uniform tension across the bond area. Cleavage and / or peel of the bond area could yield inaccurate results. . Evaluate a minimum of three assemblies per condition. Report failure mode and peak load in Newtons and % deformation. 3.3 CREE
13、P RESISTANCE No slippage (ASTM D 1780, prepare test samples per para 3.2, apply a 4.5 kg dead weight load to test samples and expose to 85 +/- 2 C for 24 h) ENGINEERING MATERIAL SPECIFICATION WSS-M11P28-C Copyright 2014, Ford Global Technologies, LLC Page 3 of 4 3.4 COLD SLAM RESISTANCE No cracking,
14、 adhesive (FLTM BV 101-02, 10 cycles of 6 slams or cohesive failure per cycle at -30 +/- 1 C, 3 samples min) . Prepare test assemblies as illustrated in Figure 1. Test substrates shall consist of 100 x 250 mm panels identified in para 4.1. Document and record the assembly cure schedule as recommende
15、d by the adhesive manufacturer. . Mechanically attach bonded test assembly to a 0.8 x 300 x 300 mm CRS base panel. Centrally locate test assembly on base panel. . Conduct test as outlined per FLTM BV 101-02 following steps 9, 10 and 11. Position panel in slam fixture with reinforcement facing inward
16、 Subject each test assembly to 10 cycles of six slams per cycle at -30 +/- 1 C. 3.5 LAMP ASSEMBLY TESTING Test parts shall be manufactured with production or production representative processes and equipment. Evaluate a minimum of six lamps per condition at 23 +/- 2 C. Every lamp shall be pressure
17、tested prior to, and after the specific preconditioning exposures listed below. 3.5.1 Seal Integrity Under Air Pressure, Baseline (EX-0224, DVM -14455) No leaks 3.5.2 Resistance to Thermal Cycle (EX-0009, DVM -14455) Lamp assembly shall not exhibit warpage, degradation in photometrics, or sink marks
18、 when subjected to thermal conditioning. They shall not leak when tested for seal integrity under air pressure. 3.5.3 Resistance to Heat Age (14 days at 107 +/- 2 C, DVM -14455) Lamp assembly shall not exhibit warpage, degradation in photometrics, or sink marks when subjected to heat age conditionin
19、g. They shall not leak when tested for seal integrity under air pressure. 3.5.4 Resistance to Vibration (EX-0008, DVM -14455) Lamp assembly shall not exhibit visible cracks, breakage or deformation when subjected to thermal cycling / vibration exposure. They shall not leak when tested for seal integ
20、rity under air pressure. 3.5.5 Resistance to Thermal Shock (Heat soak lamp assembly 4 hours at 82 +/- 2 C, immediately immerse the lens in ice water bath at 0 C, DVM -14455) Lamp assembly shall not exhibit warpage, degradation in photometrics, or sink marks when subjected to thermal shock. They shal
21、l not leak when tested for seal integrity under air pressure. ENGINEERING MATERIAL SPECIFICATION WSS-M11P28-C Copyright 2014, Ford Global Technologies, LLC Page 4 of 4 3.6 FUNCTIONAL APPROVAL Materials being evaluated for approval to this specification shall be provided to a production trial. Result
22、s must be submitted to Materials Engineering prior to material approval and release (ref. Form AVF-MET-001). 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 SUBSTRATES Substrates as specified by Design and Materials Engineering activities. 4.2 CURE SCHEDULES Cure schedules as specified by the Adhesive Manufacturer. COLD SLAM TEST ASSEMBLY Figure 1
