1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 03 2014 03 25 Revised See Summary of Revisions B. Haggart, NA 2012 10 10 Revised See Summary of Revisions B. Haggart, NA 2009 11 11 Activated L. Sinclair, NA Controlled document at www.MATS Copyright 2014, Ford Global Technologies, LLC P
2、age 1 of 6 ELASTOMERIC PARTS, INTERIOR PERFORMANCE WSS-M9P8-B 1. SCOPE The performance characteristics defined by this specification may be used to evaluate the environmental resistance of elastomeric parts in the passenger compartment. 2. APPLICATION This specification was released originally to be
3、 used in conjunction with industry standards or material specifications to provide a coherent structure for all environmental testing of elastomeric parts. An elastomeric part is defined as a material with a Durometer A hardness of 90 and below (Such as Soft TPEs TPE-V, SEBS, TEEE, TPU, etc) which f
4、all in the 2D category. Testing must be conducted on parts when possible. See Table 1 for sample size and testing requirements. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production M
5、aterials (WSS-M99P1111-A). 3.1.1 Materials used in interior applications must meet the requirements outlined in WSS-M99P2222-D1/Latest, Performance, Vehicle Interior Environment Quality Material/Component Requirements. Data must be included in material submission package. 3.2 CONSTRUCTION As specifi
6、ed on engineering drawing. 3.3 COLOR AND SURFACE The part shall be as specified on the engineering drawing. The surface shall be free of blisters, voids and any bloom unless otherwise specified on the engineering drawing. 3.4 FINISH As specified on engineering drawing ENGINEERING MATERIAL SPECIFICAT
7、ION WSS-M9P8-B Copyright 2014, Ford Global Technologies, LLC Page 2 of 6 3.5 ENVIRONMENTAL TESTING Sample Preparation All parts shall be fully trimmed including all components packaged in the environment (eg. speakers, hardware, wiring, etc.) and assembled onto actual or representative production su
8、pport foundations. This includes not only all attaching points, but also any boundary conditions that may restrict movement, unless otherwise specified by the affected Materials Engineering Activity. The retention methods, attachments, and supporting garnish moldings (if any), shall be the same as p
9、roposed for production. Test Procedure Visually evaluate the part before, during, and after the test. Measure the part and record data at all specified locations at room temperature before and after cycling on the production support foundation or test fixture. Also, during 3.4.1 “Short Term Heat and
10、 Cold Cycle“ testing, visually evaluate the part and measure any significant characteristic locations only, during the last half-hour of each cold and hot extreme temperature period. Subject the number of assemblies specified to each of the cycles that follow in paragraphs 3.5.1 and 3.5.2. Automated
11、 programmable test cycles based on the listed test conditions may be accepted by prior agreement with the affected Materials Engineering Activity. Ramp speed 1 to 5 C per minute. Record actual ramp speed on data sheet. 3.5.1 Short Term Heat, Humidity and Cold Cycle 3.5.1.1 Horizontal or vertical par
12、ts AT OR ABOVE THE BELT-LINE: . 5 h at -30 +/- 2 C . 30 min at 23 +/- 2 C and 50% R.H. . 5 h at 100+/- 2 C . 30 min at 23 +/- 2 C and 50% R.H. . 2 h at 50 +/- 2 C and 95 +/- 5% R.H. . 30 min at 23 +/- 2 C and 50% R.H. . 5 h at -30 +/- 2 C . 30 min at 23 +/- 2 C and 50% R.H. . 5 h at 100 +/- 2 C 3.5.
13、1.2 Horizontal or vertical parts BELOW THE BELT-LINE: . 5 h at -30 +/- 2 C . 30 min at 23 +/- 2 C and 50% R.H. . 5 h at 90 +/- 2 C . 30 min at 23 +/- 2 C and 50% R.H. . 2 h at 50 +/- 2 C and 95 +/- 5% R.H. . 30 min at 23 +/- 2 C and 50% R.H. . 5 h at -30 +/- 2 C . 30 min at 23 +/- 2 C and 50% R.H. .
14、 5 h at 90 +/- 2 C ENGINEERING MATERIAL SPECIFICATION WSS-M9P8-B Copyright 2014, Ford Global Technologies, LLC Page 3 of 6 3.5.1.3 Non-sun loaded floor level parts. . 5 h at -30 +/- 2 C . 30 min at 23 +/- 2 C and 50% R.H. . 5 h at 80 +/- 2 C . 30 min at 23 +/- 2 C and 50% R.H. . 2 h at 50 +/- 2 C an
15、d 95 +/- 5% R.H. . 30 min at 23 +/- 2 C and 50% R.H. . 5 h at -30 +/- 2 C . 30 min at 23 +/- 2 C and 50% R.H. . 5 h at 80 +/- 2 C 3.5.2 Long Term Heat Exposure/Sun Load 3.5.2.1 Horizontal or vertical parts AT OR ABOVE THE BELT-LINE: 7 days at 100 +/- 2 C 3.5.2.2 Horizontal or vertical parts BELOW TH
16、E BELT-LINE: 7 days at 90 +/- 2 C 3.5.2.3 Non-sun loaded floor level parts: 7 days at 80 +/- 2 C Requirements: The assemblies shall remain relatively unaffected by the exposure cycles during and after the tests as demonstrated: (1) Tactually/visually - no excessive tackiness, or surface-color change
17、 (AATCC Procedure 1, Rating 4, min); no cracking, chalking, wrinkling, distortion, blistering, warping, delamination, blushing, iridescence, hazing, milkiness, staining, waviness, bloom or other objectionable visual appearance. (2) Functionally - no excessive expansion, shrinking, or warping that wi
18、ll interfere with normal functional operations. (3) Any successful attempt to separate the components of coated and/or composite parts must result in cohesive failure only. Any adhesive failure will be cause for rejection. 3.5.3 Humidity Exposure (14 d at 38 +/- 1 C, 95 - 100% R.H.) Requirements: Th
19、e assemblies shall remain relatively unaffected by the exposure cycles during and after the tests as demonstrated: ENGINEERING MATERIAL SPECIFICATION WSS-M9P8-B Copyright 2014, Ford Global Technologies, LLC Page 4 of 6 (1) Tactually/visually - no excessive tackiness, or surface-color change (AATCC P
20、rocedure 1, Rating 4, min); no cracking, chalking, wrinkling, distortion, blistering, warping, delamination, blushing, iridescence, hazing, milkiness, staining, waviness, bloom or other objectionable visual appearance. (2) Functionally - no excessive expansion, shrinking, or warping that will interf
21、ere with normal functional operations. (3) Any successful attempt to separate the components of coated and/or composite parts must result in cohesive failure only. Any adhesive failure will be cause for rejection. 3.5.4 Cold Flexibility at -40 C No cracks (180 bend over a 20 1 mm diameter mandrel, s
22、ample size 50 x 150 1 mm) 3.5.5 Ozone Resistance (Except for TPE, TPO) Rating 0 max (FLTM BP 101-01, Procedure A) 3.6 COLOR PROPERTIES 3.6.1 Contact and Migration Staining of Paint (FLTM BP 153-01, ISO 105-A03/ AATCC Evaluation Procedure 2) No migration staining Rating 5 min Slight contact staining
23、permitted Rating 4 min (NOTE: Only required when an elastomeric part comes in contact with a painted surface.) 3.6.2 Resistance to Crocking Rating 4 min (FLTM BN 107-01, ISO 105-A03/ AATCC Evaluation Procedure 2, Wet Method) 3.6.3 Soiling and Cleanability (for light colors only) Rating 3 min (FLTM B
24、N 112-08, ISO 105-A03/ AATCC Evaluation Procedure 2) ENGINEERING MATERIAL SPECIFICATION WSS-M9P8-B Copyright 2014, Ford Global Technologies, LLC Page 5 of 6 3.6.4 Resistance to Fade (FLTM BO 116-01, ISO 105 A-02/AATCC Evaluation Procedure 1) In Vehicle Sunlight Exposure Level FLTM BO 116-01 Test Exp
25、osure AATCC Rating After Exposure, min. Severe Exposure: Parts used in these locations Instrument panel top, defroster grille, parcel shelf assembly/package tray, interior rear view mirror housing. 3609.6 kJ/m2 Rating 4 Heavy Exposure: Parts used in these locations Instrument panel lower top cover,
26、2 tone IP, IP bezel, airbag, steering wheel, message center, appliqus and center finish panel. 2406.4 kJ/m2 Rating 4 Above the Belt-line: Parts used in these locations Instrument panel lower, door trim, interior trim, pillars, garnish moldings, seats, head rest, sunshade, sun visor, seat belt webbin
27、g & loops, exposed load floor trim, and luggage cover 977.6 kJ/m2 Rating 4 Below the Belt-line: Parts used in these locations Floor console, radio, radio bezel and lower floor molding. 601.6 kJ/m2 Rating 4 Mild Exposure: Parts used in these locations Lower trim panels, overhead console, headliner, m
28、oon roof, carpet and floor mats. 225.6 kJ/m2 Rating 4 Slight change in gloss is acceptable. In addition, there shall be no cracking, crazing, blooming or other deterioration. 3.7 ODOR Rating 3 max (FLTM BO 131-03) 3.8 PHOTOMETRIC FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post tes
29、t conditioning 16 h) Fog Number 70 min Formation of clear film, droplets or crystals is cause for rejection. 3.9 FLAMMABILITY 100 mm/minute max (ISO 3795/SAE J369) 3.10 RESISTANCE TO MARRING (SAE J365, 10 cycles) No evidence of discoloration, mar can be removed with four rubs of the thumb across the
30、 mar. 3.11 HARDNESS, DUROMETE (Shore A), 15 s Delay Report (ASTM D2240/ISO 868) ENGINEERING MATERIAL SPECIFICATION WSS-M9P8-B Copyright 2014, Ford Global Technologies, LLC Page 6 of 6 TABLE 1: Test Matrix For Paragraphs: DV PV MCDCC Approval New Color Properties Only Visible Parts Non-visible Parts
31、3.5.1 Short Term Heat 1 per part number* 1 per part number* 3.5.2 Long Term Heat 1 per part number* 1 per part number* 3.5.3 Humidity Exposure 1 per part number* 1 per part number* 3.5.4 Cold Flexibility 1 1 3.5.5 Ozone Resistance 1 1 3.6.1 Paint Staining 1 1 3.6.2 Crocking 1 1 3.6.3 Soiling and Cle
32、anability 1 1 3.6.4 Resistance to Fade 1 1 3.7 Odor 1 1 3.8.1 Photometric Fogging 1 1 3.9 Flammability* 1 1 1* 3.10 Resistance to Marring 1 3.11 Hardness 3* 3* * The number of samples is dependent on burn rate. *Surrogate Data NOT Acceptable 4. GENERAL INFORMATION The information given below is prov
33、ided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 5. SUMMARY OF REVISIONS 2014 03 25 - Moved Resistance to Fade Testing from DV to PV - Changed Cold Flexibilty Test to the mandrel bend metho
34、d - Removed Gravimetric Fogging requirement 2012 10 10 -Added Hardness. -Expanded scope to include visible and non-visible parts. -Renumbered. -Added DV non visible components and PV columns to Table 1 2011 04 27 - Added VIEQ requirement in section 3 - Added requirement section to short and long term heat testing - Correct AATCC method in migration staining of paint and crocking - Added gravimetric fogging - Added Resistance to marring - Updated Table 1 to reflect additional marring and gravimetric fogging tests.
