1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 13 N-STATUS No replacement named J. Crist, NA 2006 01 19 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1990 05 02 Released EP00E01031535000 L. Rodigas Printed copies are uncontrolled Copyright 2010, Ford Global Technologies
2、 LLC Page 1 of 4 POLYPROPYLENE (PP) HOMOPOLYMER, 20% MINERAL WSK-M4D759-A1 FILLED, SELF-EXTINGUISHING MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 20% mineral (talc) filled self-extinguishing (containing flame retardant additives) injection
3、 molding compound based on polypropylene homopolymer. 2. APPLICATION This specification was released originally for material used for noise damping steps of air cleaner system. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to th
4、e Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1.1 All requirements of this specification, identified by symbol(s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 8 - 12 g/10 minutes (ISO 1133, 230 C, 2.16kg) (s) 3.4.2
5、 Filler Content 17 - 22% (ISO 3451/1, Method A, talc filler, 1 h at 750 +/- 25 C, test portion 1 to 2 g) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The following dimensions a
6、re required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall be cut from the center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.15 -
7、1.19 g/cm3(ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D759-A1 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 (s) 3.5.3 Tensile Strength at Yield, min 24 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) (s) 3.
8、5.4 Flexural Modulus, min 2.8 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 0.92 - 1.53 GPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 10 x 4.0 +/- 0.2
9、mm cut from the center of specimen A. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum). Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be
10、 within tolerance range shown on page 4. (s) 3.5.6 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 2.0 kJ/m23.5.6.2 At -40 +/- 1 C 1.7 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specified te
11、mperature prior to impact test. Low temperature testing shall be done within the cold box. (s) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.34 +/- 0.01 mm deflection) 3.5.7.1 At 1.80 MPa 65 C 3.5.7.2 At 0.45 MPa 120 C 3.5.8 Heat Aging Performance (ISO 188, ex
12、cept 150 +/- 50 air changes/h, 1000 h at 130 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Yield Change +/- 25% (Test Method per para 3.5.3) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D759-A1 Printed copies are uncontro
13、lled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.5.8.2 Impact Strength, Izod Change +/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FOGGING (FLTM BO 116-03, 3 h at 100 C) Fog Number, min 80 Formation of excessive amounts of clear film or droplets
14、 is cause for rejection. 3.7 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute Self-Extinguishing (SE) The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assista
15、nce in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 4.8-5/C (ASTM E 228 or TMA, temperature range -30 to +100 C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2
16、 C 1.37% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.21% . After 30 min at 120 C 0.26% 5.3 ELONGATION AT BREAK, min 4.0% (Test method according to para 3.5.3) 5.4 RECYCLING CODE PP-TD20 ENGINEERING MATERIAL SPECIFICATIONWSK-M4D759-A1 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
