1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 00 2011 09 08 Activated Replaces WSS-M4D873-A3 and A4 M. Corley, FoE Controlled document at www.MATS Copyright 2011, Ford Global Technologies, LLC Page 1 of 5 THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO) WSS-M4D873-B3 20% MINERAL FILLED, HIGH
2、 IMPACT, LOW CLTE, MOLDING COMPOUND, MOLD-IN-COLOR ONLY, EXTERIOR THERMOPLASTIC POLYOLEFIN ELASTOMER (TPO) WSS-M4D873-B4 20% MINERAL FILLED, HIGH IMPACT, LOW CLTE, MOLDING COMPOUND, FULLY PAINTED ONLY, EXTERIOR 1. SCOPE The materials defined by these specifications are 20% mineral filled high impact
3、 and low thermal expansion thermoplastic polyolefin elastomer (TPO) injection molding compounds based on polypropylene copolymers, rubber, color pigments and added UV stabilization for exterior use (WSS-M4D873-B3) or suitable for painting, providing that suitable surface pretreatment is used (WSS-M4
4、D873-B4). 2. APPLICATION WSS-M4D873-B3 This specification was released originally for material used for mold-in-color exterior trim applications. Any color additives need to be reviewed and approved by the raw material supplier and Ford Materials Engineering. The UV/process/heat stabilizers must be
5、in the base resin from the material supplier, not in the color concentrate, specifically for mold-in-color applications at the press. WSS-M4D873-B4 This specification was released originally for material used for painted exterior trim applications. Any color additives need to be reviewed and approve
6、d by the raw material supplier and Ford Materials Engineering. The process/heat stabilizers must be in the base resin from the material supplier. 2.1 LIMITATIONS Material approved to WSS-M4D873-B4 is unlikely to contain UV stabilizers, therefore long term exposure to direct sunlight if left unpainte
7、d could cause chalking and loss of gloss. 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). Note: Many 4D resin specifications prior to 2011, identifie
8、d certain requirements with the symbol (s), which indicated that the mean and +/- 3 sigma values were to be reported. The specification minimum, maximum or range was established using 3 sigma data. For 2011 and beyond, refer to Table 1 for number of samples required for each test to establish specif
9、ication limits. ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B3/B4 Copyright 2011, Ford Global Technologies, LLC Page 2 of 8 3.1.1 This specification is based on virgin materials, however materials with recycled content as defined by WRS-M99P42-A1 (post-consumer and/or post industrial recyclates an
10、d repolymerised recycled materials) should be used whenever technically feasible and following all materials and PV testing required by Ford Materials Engineering. The use of regrind is permitted, for economic / environmental reasons, with compliance as indicated in WSS-M99P1111-A. 3.1.2 Performance
11、 Criteria: Exterior mold-in-color substrates approved to WSS-M4D873-B3 must comply with all the requirements of WSS-M98P13-C or latest. Painted substrate must comply with all the requirements of paint performance WSS-M2P181-C or latest. Parts must fulfill applicable SDS/CDS requirements. 3.2 SAMPLE
12、PREPARATION Unless otherwise specified all tests shall be carried out on injection molded, one-end gated test specimens. The test specimens A and D shall be molded using molding conditions defined in ISO 1873-2. No annealing is allowed. See Tables 1 and 2 for the number of samples required. Specimen
13、s shall be as follows: Specimen A 150 minimum x 10 x 4.0 +/- 0.2 mm (ISO 527-2, Specimen Type 1A) Specimen B 355 x 100 x 1.0 +/- 0.1 mm (ISO 3795) Specimen C 145 x 60 x 3.2 +/- 0.2 mm Specimen D Center of Specimen A, 80 x 10 x 4.0 +/- 0.2 mm Specimen E 100 mm diameter x 3.2 mm Specimen F 80 mm diame
14、ter x 3.2 mm Specimen G 90 mm x 200 mm Specimen H 50 +/- 1 mm diameter x 3.2 +/- 0.2 mm Specimen I 100 mm x 150 mm, min 3.3 APPEARANCE (WSS-M4D873-B3 only) 3.3.1 Weathering Resistance Rating 4 min (SAE J2527 Atlas Water Cooled, Rotary Drum Xenon-Arc Apparatus only. Modified Type “S“ borosilicate inn
15、er and outer filters, 0.55 W/m2 radiant exposure monitored at 340 nm, 3000 h total exposure or as otherwise defined, Specimen C, from smooth polished mold, ISO 105-A02 / AATCC Evaluation Procedure 1) For color durability submissions, test all program colors 3.3.2 1 and 2 year Florida Rating 4 min In
16、itial Qualification for new resin technology (SAE J1976, 5 south, direct weathering inland, Specimen C from smooth polished mold, ISO 105-A02 / AATCC Evaluation Procedure 1) After exposure the material shall show no color change in excess of the specified AATCC Rating. In addition, there shall be no
17、 cracking, crazing or other deterioration. ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B3/B4 Copyright 2011, Ford Global Technologies, LLC Page 3 of 8 A slight loss of gloss or chalking will be allowed provided an acceptable appearance can be achieved as specified below by washing with mild deterg
18、ents and water (ratio 5:95 by volume) or equivalent after the outdoor exposure only. All initial approvals may be based on the accelerated weathering exposure, pending real world outdoor exposure results for final approval. 3.3.3 Resistance to Scratch and Mar (FLTM BO 162-01, Specimen I) Scratch Rat
19、ing 2 at 2 N, max Whitening/Color Change Rating 1 at 7 N, max Marring Rating 2 at 2 N, max These values are derived from colored and grained samples in agreement with Materials Engineering. Details regarding color house, let down ratio, colors, grain, etc can be found in the approval package. 3.4 MA
20、TERIAL PROPERTIES 3.4.1 Filler Content 18 - 23 % (ISO 3451-1, Method A, talc filler 1 hour at 650 +/- 50 C, test portion 2 to 2.5 g) 3.4.2 Density 0.97 - 1.05 g/cm3 (ISO 1183, Method A) 3.4.3 Tensile Strength at Yield 15 MPa min (ISO 527-1 & ISO 527-2, Specimen A, test speed: 50 mm/minute) 3.4.4 Ten
21、sile Modulus 1.2 GPa min (ISO 527-1 & ISO 527-2, Specimen A, 1 mm/minute test speed) 3.4.5 Flexural Modulus 1.4 GPa min (ISO 178, Specimen D, 64 mm support span, 2 mm/minute test speed) ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B3/B4 Copyright 2011, Ford Global Technologies, LLC Page 4 of 8 3.4.
22、6 Impact Strength, Notched Izod (ISO 180/1A, Specimen D) 3.4.6.1 At 23 +/- 2 C 40 kJ/m2 min Report Break Type 3.4.6.2 At -40 +/- 2 C 2.5 kJ/m2 min Report Break Type 3.4.6.3 At 0 +/- 2 C 25 kJ/m2 min Report Break Type The test specimen must be conditioned for minimum of 6 hours at the above specified
23、 temperature prior to impact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 seconds. 3.4.7 Heat Deflection Temperature 46 C min (ISO 75-1 & ISO 75-2, Specimen D, flatwise, 0.34 +/- 0.1 mm deflection. At 1.80 MPa) 3.4.
24、8 Coefficient of Linear Thermal Expansion (ISO 11359-2, -30C to 100C) Flow 4 - 7 E-5 mm/mm/ C Across Flow 4 - 7 E-5 mm/mm/ C 3.4.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 C. Unaged property values shall be determined at the time of the aged properties de
25、termination) 3.4.9.1 Tensile Strength at Yield, Change +/- 25% max (Test Method per para 3.4.3) 3.4.9.2 Impact Strength Notched Izod, Change +/- 25% max (Test Method per para 3.4.6.1, specimens to be notched before Heat Aging) 3.4.10 Flammability (ISO 3795/SAE J369 Specimen B smooth surface) Burn Ra
26、te 100 mm/minute max 3.5 MATERIAL PROPERTIES REPORT ONLY Values are retained in Ford Materials Database . 3.5.1 Melt Flow Rate Report Value g/10 minutes (ISO 1133 230 C, 2.16 kg) 3.5.2 Molding Shrinkage (Report method used, sample size and value) After 48 h at 23 +/- 2 C Report Value, % ENGINEERING
27、MATERIAL SPECIFICATION WSS-M4D873-B3/B4 Copyright 2011, Ford Global Technologies, LLC Page 5 of 8 3.5.3 Post Shrinkage (WSS-M4D873-B4 only) (Report method used, sample size and value Separate specimens required for each test, report total shrinkage) After 48 h at 80 C Report Value, % After 30 minute
28、s at 120 C Report Value, % 3.5.4 Hardness, Durometer D Report Value (ISO 868, 15 s dwell) 3.5.5 Impact Strength, Notched Charpy (ISO 179-1/2, Specimen D) 3.5.5.1 At 23 +/- 2 C Report Value kJ/m2 Report Break Type 3.5.5.2 At -40 +/- 2 C Report Value kJ/m2 Report Break Type 3.5.5.3 At 0 +/- 2 C Report
29、 Value kJ/m2 Report Break Type The test specimen must be conditioned for minimum of 6 hours at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 seconds. 3.5.6 Impact Stren
30、gth Multiaxial (ASTM D 3763, Impact velocity: 2.2 m/s Specimen E, smooth surface injection molded specimen) Max Load Energy at 23 +/- 2 C Report J Energy Absorbed 100% Ductile Failure Max Load Energy at -15 +/- 2 C Report J Energy Absorbed 100% Ductile Failure Max Load Energy at -20 +/- 2 C Report J
31、 Energy Absorbed 80% Ductile Failure, min A ductile failure is defined as a crack that does not radiate more than 10 mm from the center of the impact point. Test specimens must be conditioned for minimum of 6 h at test temperature prior to impact testing. Low temperature testing shall be conducted w
32、ithin the same environmental chamber as the clamp mechanism of the impact device. Specimens can be transported from the conditioning environment to the testing environment, provided the transfer is within 5 seconds. ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B3/B4 Copyright 2011, Ford Global Tech
33、nologies, LLC Page 6 of 8 3.5.7 Poissons Ratio Report Ratio (ISO 527-1/2, Specimen A, 1 mm/minute test speed) 3.5.8 Additional FMD Required Information FTIR/TGA/DSC/CLTE Curves 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements
34、 of this specification. 4.1 TYPICAL PROPERTIES USING METHODS IN SECTION 3.5 Test Typical Value Units 3.5.1 Melt Flow Rate 15 - 20 g/10 min 3.5.2 Molding Shrinkage After 48 h at 23 +/- 2 C (For specific method and sample size, contact Materials Engineering) 0.4 - 0.6 % 3.5.3 Post Shrinkage (For speci
35、fic method and sample size, contact Materials Engineering. Values show total shrinkage) - After 48 h at 80 +/- 2 C - After 30 minutes at 120 C 0.5 - 0.7 0.6 - 0.9 % 3.5.4 Hardness Shore D 55 - 60 n/a 3.5.5 Impact Strength, Notched Charpy At 23C At -40C At 0C 53 - 56 3 30 - 40 kJ/m2 3.5.6 Poisson Rat
36、io 0.34 n/a 4.2 MATERIAL IDENTIFICATION FOR TPO-(PP+EPDM)-MD20 RECYCLING PURPOSES (ISO 1043, ISO 11469, ISO 18064) ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B3/B4 Copyright 2011, Ford Global Technologies, LLC Page 7 of 8 Table 1: Minimum Sample Size Initial Approval New Manufacturing Location fo
37、r Previously Approved Material Test Minimum Lots Specimens per lot Total Test Specimens Lots Specimens per lot Total Test Specimens 3.1 WSS-M99P1111-A 3.3.1 Weathering Resistance (Exterior, unpainted) 1 1 1 3.3.2 1 and 2 year Florida (Exterior, unpainted) 1 1 1 3.3.3 Scratch Resistance 1 1 1 3.4.1 F
38、iller Content* 3 1 3 1 1 1 3.4.2 Density 1 3 3 3.4.3 Tensile Strength at Yield* 3 5 15 1 5 5 3.4.4 Tensile Modulus 1 10 10 3.4.5 Flexural Modulus* 3 10 30 1 10 10 3.4.6 Impact Strength, Notched Izod (per condition)* 3 10 30 1 10 10 3.4.7 Heat Deflection Temperature* 3 2 6 1 2 2 3.4.8 Coefficient of
39、Linear Thermal Expansion (per condition) 1 3 3 3.4.9 Heat Aging Performance 3.4.9.1 Tensile Strength at Yield, Change 1 5 5 3.4.9.2 Impact Strength, Notched Izod, Change 1 10 10 3.4.10 Flammability 1 5 5 3.5.1 Melt Flow Rate 3 1 3 1 1 1 3.5.2 Mold Shrinkage 1 5 5 1 5 5 3.5.3 Post Shrinkage (per cond
40、ition) 1 5 5 1 5 5 3.5.4 Hardness, Durometer D 1 5 measurements 1 3.5.5 Impact Strength, Multiaxial (per condition) 3 10 30 1 10 10 3.5.6 Impact Strength Notched Charpy (per condition) 1 10 10 3.5.7 Poissons Ratio 1 5 5 3.5.8 Data plots FTIR, TGA, DSC, CLTE 1 1 1 per test * For these requirements, t
41、he 3 Sigma value from the raw data is used to meet the requirement. ENGINEERING MATERIAL SPECIFICATION WSS-M4D873-B3/B4 Copyright 2011, Ford Global Technologies, LLC Page 8 of 8 Table 2: Minimum Color Property Testing - For (WSS-M4D873-B3 only) 6. SUMMARY OF REVISIONS Para. Test Method Lots Specimen
42、s per Lot Total Test Specimens Color Test Direction 3.3.1 Weathering Resistance 1 1 1 Every color 3.3.3 Scratch Resistance 1 3 3 As directed by Materials Engineering 3.4.3 Tensile Strength at Yield 1 5 5 As directed by Materials Engineering 3.4.5 Flexural Modulus 1 10 10 As directed by Materials Engineering 3.4.6 Impact Strength, Notched Izod at 23 +/- 2 C 1 10 10 As directed by Materials Engineering
