1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 12 09 Revised Para 3.0 inserted ; Para 3.1, 3.2, 3.3, 3.9, 3.10, 4 deleted 1994 11 30 NB00E10263411000 Released D. DiGregorio E. Rezendes Printed copies are uncontrolled Page 1 of 5 Copyright 2002, Ford
2、 Global Technologies, Inc. ADHESIVE, URETHANE, TWO COMPONENT, WSB-M2G382-A HEAT CURING, PLASTIC BONDING 1. SCOPE The material defined by this specification is a pumpable, two component, heat curing, urethane adhesive. 2. APPLICATION This specification was released originally for material used to str
3、ucturally bond plastic components such as polyvinyl chloride to nylon (type 66). The polyvinyl chloride may require an adhesion primer to protect the bondline from plasticizer migration. Refer to para 4.2 for typical cure schedules. Compliance with this material specification does not guarantee the
4、adhesive will function for all potential applications on a vehicle. The specific design condition should be evaluated by a plant trial or laboratory simulation prior to release of the material. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers m
5、ust conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 UNCURED MATERIAL CHARACTERISTICS Initial adhesive strengths are achieved after 1.5 h room temperature curing. 3.4.1 Viscosity (FLTM BV 103-01, 2.64 mm orifice, 550 kPa air pressure, Method A, test at 23
6、+/- 2 C) 3.4.1.1 As received . Base 12 - 33 s . Curative 45 - 85 s ENGINEERING MATERIAL SPECIFICATION WSB-M2G382-A Page 2 of 5 Copyright 2002, Ford Global Technologies, Inc. 3.4.1.2 Aged, 7 days at 40 +/- 2 C 10 s max increase . Base from initial . Curative viscosity 3.4.1.3 Aged, 90 days at 27 +/-
7、2 C 10 s max increase . Base from initial . Curative viscosity 3.4.2 Solids, min 98 % (ASTM D 2834, except 3 h at 100 +/- 2 C, save sample for next test) 3.4.3 Ash, max 35 % (ISO 3491, Method A, 760 +/- 30 C) 3.4.4 Weight Per Volume +/- 0.02 kg/L (ASTM D 816) The weight tolerance for any one supplie
8、r shall be based on the recorded weight of their original approved production sample. Refer to para 5.3 for additional information. 3.4.5 Sag Resistance, max No sag (FLTM BV 118-01, 6 mm mixed material thickness, substrates per para 5.1) 3.4.6 Expansion No porosity or expansion . Extrude a 13 x 200
9、mm adhesive bead onto a 100 x 300 mm, plastic substrate per para 5.1. . Place the test panel in an air circulating oven and bake at 120 +/- 2 C for 30 minutes. . Condition test panel at 23 +/- 2 C for 1 h minimum after baking. . Cut the adhesive bead and panel lengthwise through the center of the ad
10、hesive bead. . Examine the adhesive for any voids, porosity or expansion caused by entrapped air or internal gassing. ENGINEERING MATERIAL SPECIFICATION WSB-M2G382-A Page 3 of 5 Copyright 2002, Ford Global Technologies, Inc. 3.5 SHEAR ADHESION STRENGTH Minimum load (ASTM D 3163, 13 mm/minute crosshe
11、ad speed, specified in MPa or 0.8 mm bondline thickness, 2.5 cm overlap, substrate failure 6.4 cm2bond area, substrates per para 5.1. 5 samples minimum per test condition. Normal, min (Cure assemblies according to suppliers recommendation. Condition cured assemblies 30 min at specified temperature p
12、rior to test) 3.5.1 Test at 23 +/- 2 C 4.0 MPa 3.5.2 Test at 121 +/- 2 C 2.0 MPa 3.5.3 Test at - 40 +/- 1 C 5.0 MPa 3.5.4 Exposure Resistance, min Condition for 24 h at 23 +/- 2 c after exposure, then test at 23 +/- 2 C. . 14 days heat age at 90 +/- 1 C 5.0 MPa . 14 days humidity at 38 +/- 2 C 3.0 M
13、Pa and 98 +/- 2 % R.H. . 14 days water immersion 4.0 MPa (FLTM BI 104-01) 3.5.5 500 h salt spray described per 3.0 MPa (ASTM B 117) 3.5.6 5 cycles with each cycle 4.0 MPa consisting of: . 4 h at 90 +/- 1 C . 4 h at 38 +/- 1 C and 98 +/- 2 % RH . 16 h at -40 +/- 1 C . 4 h at 38 +/- 1 C and 98 +/- 2 %
14、 RH . 4 h at 90 +/- 1 C 16 h at -40 +/- 1 C 3.5.7 Paint Repair Oven 4.0 MPa (30 minutes at 120 C) 3.5.8 2000 h Weathering, Xenon Arc 3.0 MPa (SAE J1960) ENGINEERING MATERIAL SPECIFICATION WSB-M2G382-A Page 4 of 5 Copyright 2002, Ford Global Technologies, Inc. 3.5.9 Florida Exposure, 2 years 3.0 MPa
15、(SAE J1976, This requirement will be effective from the 1996 MY) 3.5.10 Arizona Exposure, 2 years 3.0 MPa (SAE J1976, This requirement will be effective from the 1996 MY) 3.6 STORAGE STABILITY Material shall be stored in closed containers at temperatures below 27 C, away from all sources of heat. He
16、at greatly accelerates aging. Under these storage conditions, the shelf life of the material shall be 3 months. However, when stored at 4 C, the shelf life is extended to 6 months. When these materials are stored at temperatures below 23 C, they shall be conditioned at room temperature prior to appl
17、ication. Adequate conditioning permits the material to retain its optimum application properties. 3.7 MATERIAL CONSISTENCY The material shall be smooth homogenous mixture, free form foreign materials and properties detrimental to normal production operations. This adhesive should be deaired during m
18、anufacture and bottom filled into drums to avoid inclusion of air. Additionally, adhesive should be filtered through a No. 150 micron filter. 3.8 FUNCTIONAL APPROVAL Materials being evaluated for approval to this specification shall be subjected to a production trial. Functional trial results must b
19、e approved by the affected assembly operation and Design Engineering. Results shall be made available to Materials Engineering prior to material approval and release. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this s
20、pecification. 5.1 SUBSTRATES 5.1.1 Nylon Type 66 ESA-M4D379-A/ASTM D 4000, PA 162 Nominal Thickness - 1 mm 5.1.2 Coextruded PVC/Aluminum ESB-M15P23-A1 or equivalent Nominal thickness - 0.5 mm PVC coating on SAE J454 (8011 Aluminum - 0.8 mm thickness) Adhesion Primer for PVC: Norton Titerbond 2287 EN
21、GINEERING MATERIAL SPECIFICATION WSB-M2G382-A Page 5 of 5 Copyright 2002, Ford Global Technologies, Inc. 5.2 CURE SCHEDULES Cure schedules as specified by the Adhesive Manufacturer. Typical heat cure: 120 C for 10 minutes. 5.3 WEIGHT PER VOLUME . Base 1.44 +/- 0.02 kg/L . Curative 1.24 +/- 0.02 kg/L
