1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 1 2015 03 17 Revised See Summary of Revisions L. Soreide, NA 2012 12 04 Activated L. Shen, APA Controlled document at www.MATS Copyright 2015, Ford Global Technologies, LLC Page 1 of 8 POLYCARBONATE/ACRYLONITRILE BUTADIENE WSS-M4D924-B1
2、STYRENE BLEND (PC+ABS) MEDIUM IMPACT MOLDING COMPOUND, INTERIOR 1. SCOPE The material defined by this specification is a thermoplastic UV stabilized, medium impact molding compound based on a blend of polycarbonate (PC) and acrylonitrile butadiene styrene (ABS) for mold-in-color interior application
3、s. 2. APPLICATION This specification was released originally for material used in interior instrument panel applications for small bezels in non-head impact and medium UV exposure (977.6kJ/m2) areas. 2.1 LIMITATIONS The use of HALS (Hindered Amine Light Stabilizers) is prohibited in PC+ABS materials
4、. 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). 3.1.1 Many 4D resin specifications prior to 2011, identified certain requirements with the symbol(s
5、), 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. 3.1.2 This specification is based on virgin material and do
6、es not allow the addition of recycled content (PIR/PCR). 3.1.3 The use of recycled materials is encouraged per Ford Corporate ESOW Supplement 3. Materials containing recycled content (PIR/PCR) must be specified with a Ford WRS material specification as defined by WRS-M99P42-A1. These materials canno
7、t replace a virgin material without prior Ford approval and addition of the WRS specification to the engineering drawing. 3.1.4 The use of regrind is permitted, for economic / environmental reasons. Part manufacturers using this specification must complete DV and PV testing with the allowable amount
8、 of regrind and the maximum allowable regrind content must be specified on the engineering drawing. Any changes to what is specified on the drawing (no specific amount implies zero regrind) must be approved by Materials and PD Engineering through the formal Ford Motor Company process (SREA). 3.1.5 M
9、aterials 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. ENGINEERING MATERIAL SPECIFICATION WSS-M4D924-B1 Copyright 20
10、15, Ford Global Technologies, LLC Page 2 of 8 3.1.6 Performance Criteria: Parts using this specification shall meet the appropriate performance specifications: WSS-M15P4-F/Latest, for interior mold-in-color applications. Parts must fulfill applicable SDS/CDS requirements. 3.2 SAMPLE PREPERATION Unle
11、ss 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 2580-2. No annealing is allowed. See Table 1 and 2 for the number of specimens required. Specimens shall be as f
12、ollows: 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 diameter x 3.2 mm Sp
13、ecimen 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 3.3.1 Weathering Resistance Rating 4 min (FLTM BO 116-01, 977.6 kJ/m2 exposure, Specimen C from smooth polished mold, ISO 105-A02 / AATCC Evaluation Procedure 1) After exposure the
14、 material shall show no fading or color change in excess of the specified AATCC rating. In addition, there shall be no cracking, crazing or other deterioration. Use regional choice for initial approval and report the color house used. See Table 2 for additional color durability submission requiremen
15、ts. *When setting machine for automatic shutoff, every 526.4 kJ/m2 is recommended 3.4 MATERIAL PROPERTIES 3.4.1 Density 1.08 - 1.20 g/cm3 (ISO 1183, Method A) 3.4.2 Tensile Strength at Yield 47 MPa min (ISO 527-1 Flow Cross Flow 7.9 7.8 E-5 mm/mm/C E-5 mm/mm/C 3.5.3 Molding Shrinkage after 48 h at 2
16、3 +/- 2 C; (For specific method and sample size, contact Materials Engineering) Flow Cross Flow 0.96 0.84 % % 3.5.4 Impact Strength, Multiaxial; Max Load Energy at 23 +/- 2 C; 6.6 m/s 44.9 J 3.5.4 Impact Strength, Multiaxial; Max Load Energy at -10 +/- 2 C; 6.6 m/s 50.1 J 3.5.5 Poissons Ratio 0.35 N
17、/A 4.2 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES PC+ABS (ISO 1043/11469) 5. SUMMARY OF REVISIONS 2015 03 17 Added 3.1.2, 3.1.3, 3.1.4 regarding usage of recycled product and regrind Lowered tensile strength at yield from 48 MPa to 47 MPa, tensile modulus from 2.3 GPa to 1.8 GPa and vicat soften
18、ing temperature from 116 C to 114C Added conditions to odor Added an upper limit for the typical range for melt flow in table 4.1 Removed Impact strength, notched izod ENGINEERING MATERIAL SPECIFICATION WSS-M4D924-B1 Copyright 2015, Ford Global Technologies, LLC Page 7 of 8 Table 1: Minimum Sample S
19、ize Initial Approval New Manufacturing Location for Previously Approved Material Para. Test Minimum Lots Specimens per Lot Total Test Specimens Lots Specimens per lot Total Test Specimens 3.1 WSS-M99P1111-A 3.1.4 WSS-M99P2222-D1/Latest Total Carbon, Hazardous Substances, Formaldehyde, Acraldehyde, A
20、cetaldehyde (See below for Odor and Fogging) 1 1 1 per test 3.3.1 Weathering Resistance 1 1 1 3.4.1 Density 1 3 3 3.4.2 Tensile Strength at Yield * 3 5 15 1 5 5 3.4.3 Elongation 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, Notch
21、ed Charpy (per condition)* 3 10 30 1 10 10 3.4.7 Heat Deflection Temperature* 3 2 6 1 2 2 3.4.8 Vicat Softening Temperature* 3 2 6 1 2 2 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 Charpy, Change 1 10 10 3.4.10 Hydrolytic Stability 1
22、10 10 3.4.11 Odor 1 9 9 3.4.12 Fogging Photometric 1 3 3 3.4.13 Flammability 1 5 5 3.5.1 Melt Flow Rate 1 1 1 3.5.2 Coefficient of Linear Thermal Expansion (per condition) 1 3 3 3.5.3 Molding Shrinkage 1 5 5 1 5 5 3.5.4 Impact Strength, Multiaxial (per condition)* 3 10 30 1 10 10 3.5.5 Poissons Rati
23、o 1 2 2 3.5.7 Curves - IR - TGA - DSC - CLTE - Stress/Strain Curves at 23 C 1 1 1 per test * For these requirements the 3 sigma value from the raw data is used to meet the requirements. ENGINEERING MATERIAL SPECIFICATION WSS-M4D924-B1 Copyright 2015, Ford Global Technologies, LLC Page 8 of 8 Table 2
24、: Minimum Color Property Testing Para. Test Method Lots Specimens per Lot Total Test Specimens Color Test Direction 3.3.1 Weathering Resistance 1 1 1 Every color 3.4.2 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 3.4.6.1 Impact Strength, Notched Charpy At 23 +/- 2 C 1 10 10 As directed by Materials Engineering 3.4.11 Odor 1 9 9 As directed by Materials Engineering 3.4.13 Flammability 1 5 5 Every color
