1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 27 N-STATUS No Replacement Named C. Mracna, NA 2004 09 21 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.12 & 4 deleted 1989 11 17 Released SM/ER 4499 TC B. Hennessey Printed copies are uncontrolled Copyright 2009, Ford Global Techno
2、logies, LLC Page 1 of 4 POLYURETHANE ELASTOMER (PUR) WSD-M2D404-A1 REACTION INJECTION MOLDED (RIM), GLASS ENCAPSULATION, 80 IRHD POLYURETHANE ELASTOMER (PUR) WSD-M2D404-A2 REACTION INJECTION MOLDED (RIM), GLASS ENCAPSULATION, 90 IRHD NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials described by
3、these specifications are reaction injection molded (RIM) Polyurethane materials with good hydrolysis resistance. The visible surfaces may be in-mold painted. 2. APPLICATION These specifications were released originally for material used for backlight window encapsulation where good adhesion to glass
4、 and resistance to outdoor exposure is required 3. REQUIREMENTS 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 MATERIAL TESTING 3.4.1 Preparation of Test Specim
5、ens All tests shall be carried out on finished parts. When not feasible, specimens cut from molded test sheets manufactured from the same material and with equivalent cure to molded parts are recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.5 ORI
6、GINAL PROPERTIES A1 A2 3.5.1 Hardness, International, IRHD 75 to 85 80 to 95 (ASTM D 1415, Micro method) 3.5.2 Hardness, Durometer A 75 to 85 80 to 95 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.5.3 Tensile Strength, MPa, min 10 11 (ISO 37/ASTM D
7、 412, Die C) ENGINEERING MATERIAL SPECIFICATIONWSD-M2D404-A1/A2Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 4 A1 A2 3.5.4 Elongation at Break, %, min 175 250 (Test Method according to para 3.5.3) 3.5.5 Modulus at 100% Elongation, MPa 4 to 6 6 to 11 (Test Me
8、thod according to para 3.5.3) 3.5.6 Tear Strength, kN/m, min 25 35 (ISO 34, Method B, procedure (a)/ ASTM D 624, Die C) 3.5.7 Compression Set, %, max 30 40 (ISO 815/ASTM D 395, Method B except 25% compression, plied-up specimens, 70 h at 70 +/- 2 C) 3.5.8 Ozone Resistance, Rating, max 0 0 (FLTM BP 1
9、01-01, Procedure A) 3.5.9 Low Temperature Brittleness, max -40 C -40 C (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1,000 h at 70 +/- 2 C) 3.6.1 Hardness Change, International, max +/- 5 +/- 5 3.6.2 Tensile Strength Change, %, max -35
10、 -25 3.6.3 Elongation at Break Change, %, max -40 -25 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 100 +/- 2 C) 3.7.1 Hardness Change, International, max +/- 5 +/- 5 3.7.2 Tensile Strength Change, %, max -20 -50 3.7.3 Elongation at Break Change, %, max -20 -40 3.8 HUMIDITY R
11、ESISTANCE (1,000 h at 37 +/- 1 C, 99 +/- 1% relative humidity. Tests to be carried out 2 +/- 0.25 h after removal) 3.8.1 Hardness Change, International, max +/- 5 +/- 5 3.8.2 Tensile Strength Change, %, max -35 -25 3.8.3 Elongation Change, %, max -35 -25 ENGINEERING MATERIAL SPECIFICATIONWSD-M2D404-
12、A1/A2Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 4 3.9 HIGH TEMPERATURE HUMIDITY RESISTANCE (ISO 2440 Clause 5.2, 3 h at 105 C (Polyester) or 5 h at 120 C (Polyether) A1 A2 3.9.1 Hardness Change, International, max -25 -30 3.9.2 Tensile Strength Change, %,
13、 max -50 -60 3.9.3 Elongation Change, %, max -20 -20 3.10 ADHESION TO GLASS Method: Mold a 6.0 mm wide x 400 mm long x 3.0 mm thick section of the PUR material to an adhesive primed 200 mm x 20 mm ceramic frit-coated glass plate such that 170 mm of the PUR is bonded to the glass leaving a 30 mm leng
14、th of unbonded glass to be gripped in the lower grips of a tensile machine. The remaining 230 mm “tail“ of PUR overhangs the 30 mm length of unbonded glass and is left free so that it can be gripped in the top grip. This allows a 180 peel adhesion test to be carried out. The glass used shall be curr
15、ent production windshield glass. Condition the test assemblies for a minimum of 4 h at 23 +/- 2 C prior to ageing. Age three test assemblies at each of the conditions shown below. Allow the test assemblies to condition for 24 h at 23 +/- 2 C after ageing and before adhesion testing. Carry out 180 pe
16、el adhesion test at 25 mm/minute on a tensile testing machine and produce an autographic trace of the load/distance curve. Calculate the median adhesion strength according to ISO 6133 3.10.1 After Heat Ageing to para 3.6, kN/m, min 4.0 4.0 3.10.2 After Heat Ageing to para 3.7, kN/m, min 4.0 4.0 3.10
17、.3 After Humidity Ageing to para 3.8, kN/m, min 4.0 4.0 3.10.4 After Weathering Resistance Testing to WSD-M9P8-A para 3.9.1.1, kN/m, min 4.0 4.0 3.11 FINISHED PART REQUIREMENT The finished part shall conform to the exterior requirements of WSD-M9P8-A. For clause 3.7.1, visual assessment only. For cl
18、ause 3.7.1.2, test temperature 70 C. For all clauses, adhesive failure is allowed providing the requirements of WSD-M2D404-A1/A2 clause 3.10 are met. ENGINEERING MATERIAL SPECIFICATIONWSD-M2D404-A1/A2Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 4 5. GENERAL INFORMATION 5.1 Density, nominal, g/cm31.0 1.0 5.2 Mould Shrinkage, mm/mm TBE 0.012 5.3 Coefficient of Linear Thermal Expansion, x 10 -5/C TBE 16 5.4 RECYCLING CODE SAE or PUR OPTIONAL PUR
