1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2007 08 14 N-STATUS Replaced by WSS-M9P9-A; Inserted 3.0; Deleted 3.1, 3.2, 3.3 K. Mueller 1996 01 10 Revised Revised para 5.2 M. Trapp 1992 01 28 Released NBOOI10043054143 M. Trapp Printed copies are uncontrolled Copyright 2007, Ford Global T
2、echnologies, LLC Page 1 of 5 WEATHERSTRIP, PERFORMANCE, FOAMED HOT MELT SEALANT WSB-M9P8-A2 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The performance characteristics defined by this specification may be used to evaluate the environmental resistance and retention performance of weatherstrip assemblies r
3、equiring foamed hot melt sealer systems. 2. APPLICATION This specification was released originally to be used in conjunction with basic material specifications to provide a coherent structure for all environmental testing of weatherstrip assemblies where foamed hot melt sealer systems are required.
4、3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 GENERA
5、L DESCRIPTION/APPEARANCE The hot melt sealer as foamed in place shall be neutral in color, homogeneous, completely resistant to moisture, with excellent adhesion to rubber weatherstrips and painted steel, and outstanding heat and weathering resistance. 3.5 CONSTRUCTION As specified on engineering dr
6、awing 3.6 RESISTANCE PROPERTIES The following requirements shall be assessed on sections of the weatherstrip assembly and must include all materials and constructions, e.g., molded corners, bright inserts, etc. Separate specimens are required for each test. ENGINEERING MATERIAL SPECIFICATIONWSB-M9P8
7、-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 5 The parts as received and after being subjected to the exposures listed below (paragraphs 3.6.1, 3.6.2, 3.6.3, 3.6.4, 3.6.5, 3.6.7 and 3.9) shall conform to the following requirements: . No evidence of colo
8、r or gloss change greater than rating 4-5 of the AATCC Grey Scale (10 step). . No cracking, chalking, wrinkling, crazing, discoloration, iridescence, bloom, milkiness, separation or loss of embossment allowed. . In addition, there shall be no evidence of shrinkage or incompatibility between material
9、s of construction. . Any attempt to physically separate composite weatherstrips must result in cohesive failure only. Any adhesive failure will be cause for rejection. . Any measurable sag or movement of sealant shall be cause for rejection. When the weatherstrip assembly includes windlace/pinch wel
10、d retention systems additional samples shall be assembled to metal panels simulating production installation. After exposure according to paras 3.6.1, 3.6.2 and 3.6.3, the reduction in extraction load shall not exceed 25% of the minimum original requirement. For insertion/extraction force requiremen
11、ts and blade dimensions, see part drawing. These tests are to be performed with panels, painted with the current Ford production basecoat/clearcoat paint system, inserted in weatherstrips containing sealant. All assessments shall be carried out within 1 hour of reaching 23 +/- 2 C unless otherwise s
12、pecified. 3.6.1 Heat Aging (ISO 188/ASTM D 573, 300 mm specimen, horizontal exposure) Change in Length, max 3.6.1.1 30 minutes at 120 +/- 2 C 1.0% 3.6.1.2 1000 hours at 80 +/- 2 C 1.0% 3.6.2 Humidity Exposure (14 days at 38 +/- 2 C and 95 - 100% R.H., 300 mm specimen, horizontal exposure) ENGINEERIN
13、G MATERIAL SPECIFICATIONWSB-M9P8-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 5 3.6.3 Environmental Cycling Test (300 mm specimen, horizontal exposure) 4 cycles. Each cycle shall consist of the following: . 4 h at 100 +/- 2 C . 4 h at 38 +/- 1 C and 95 -
14、 100% R.H. . 16 h at -40 +/- 1 C . 4 h at 38 +/- 1 C and 95 - 100% R.H. . 4 h at 100 +/- 2 C . 16 h at -40 +/- 1 C 3.6.4 Salt Spray (ASTM B 117, 240 h) In addition to the above requirements there shall be no evidence of red rust on metal parts. 3.6.5 Ozone Resistance, max Rating 0 (FLTM BP 101-01, P
15、rocedure B) 3.6.6 Staining After exposure in accordance with 3.6.6.1 the material shall cause no stain in excess of specified AATCC rating (AATCC Scale for Transference of Color, 10 step). 3.6.6.1 Contact and Migration Staining of Paint (FLTM BP 153-01, Procedure A & B) Slight contact staining permi
16、tted Rating 4 3.6.7 Chemical Resistance Weatherstrips shall be resistant to solvents/cleaners normally used in cleaning operations and to fluids encountered during normal service. See paras 5.1 and 5.2. Note: Statements of para 3.6 are considered sufficient to rate the chemical resistance of the wea
17、therstrip without formal rating. Solvents commonly used in the cleaning operations in the affected plants should be evaluated. 3.6.8 Cold Insertion Test Method: Condition a 300 mm specimen and the specified test flange for 4 h at 10 +/- 2 C. Measure the insertion force immediately after removal from
18、 the freezer. The insertion force shall not exceed the maximum original requirement specified on the engineering drawing by more than 50%. ENGINEERING MATERIAL SPECIFICATIONWSB-M9P8-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 4 of 5 3.6.9 Hot Extraction Test
19、 Method: Install a 300 mm specimen on the specified test flange and condition in accordance with para 3.3. Expose the assembly to 50 +/- 2 C for 4 h in a preheated air circulating oven. Measure the extraction force immediately after removal from the oven. Reduction in extraction force shall not exce
20、ed 25% of the minimum original requirement specified on the engineering drawing. 3.7 APPEARANCE As specified on the engineering drawing 3.8 ODOR, max Rating 2 (FLTM BO 131-01) 3.9 WEATHERING RESISTANCE 3.9.1 Exterior Parts After exposure in accordance with 3.9.1.1 and 3.9.1.2 the material shall show
21、 no color change, bloom or iridescence in excess of specified AATCC rating (AATCC Grey Scale for Evaluating Change in Color, 10 step). 3.9.1.1 2000 h Xenon Arc Weatherometer Rating 4 (SAE J1960) 3.9.1.2 12 Months Florida Rating 4 (FLTM BI 160-01, 5 south, direct weathering inland) 3.9.2 Interior Par
22、ts After exposure in accordance with 3.9.2.1 and 3.9.2.2 the material shall show no color change, bloom or iridescence in excess of specified AATCC rating (AATCC Grey Scale for Evaluating Change in Color, 10 step). 3.9.2.1 1240 kJ/m2Xenon Arc Weatherometer Rating 4 (SAE J1885) 3.9.2.2 12 Months Flor
23、ida Rating 4 (FLTM BI 160-01), 5 south, under glass) 3.10 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 70 Formation of clear film, droplets or crystals is cause for rejection. 3.11 CROCKING, min Rating 4 (FLTM BN 107-01) ENGINEERING MATERI
24、AL SPECIFICATIONWSB-M9P8-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 5 of 5 3.12 COLD FLEXIBILITY No cracks or (FLTM BP 106-03, except weatherstrips) breaks Method for weatherstrips: Place a 300 mm length of weatherstrip in a cold chamber at -40 +/- 2 C for
25、an exposure period of 4 hours. While still in the cold chamber bend the weatherstrip around a similarly cold-conditioned 25 mm diameter mandrell. The bending operation should take less than 1 second. Coated or flocked weatherstrips should be bent with the coating on the outside. Examine for cracks w
26、ith the unaided eye. 3.13 FLAMMABILITY, max burn rate 100 mm/minute (ISO 3795, interior parts only unless otherwise shown on the Engineering Drawing) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1
27、 The following materials should be evaluated for chemical resistance. All purpose cleaner ESR-M14P4-A* Glass cleaner ESR-M14P5-A* *Or equivalent materials approved by Ford Parts and Service Division. WSK-M98P6-A Para 3.16 Resistance to Waxing and De-waxing Compounds 3.17 Resistance to Water Spotting
28、 3.18 Resistance to Acid Spotting 3.19 Resistance to Windshield Washer Fluid 3.20 Fuel Resistance 5.2 For information on fluids and other materials required for use in this specification contact: Materials Laboratory 13/100 Body & Chassis Engineering Research and Engineering Centre Body Eng. Materials Laboratory Ford Motor Company Ltd Ford Motor Company Laindon, Basildon PO Box 2053, Mail Drop 165 Essex SS15 6EE, England Dearborn, MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia
