1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 10 21 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1999 01 28 Activated K. BruleyPrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 2 STYRENE BUTADIENE RUBBER (SBR) AND POLYMER WSS-M2D492-
2、A2 BINDER, DIE CUT SHEET, POST CONSUMER RECYCLATE 1. SCOPE The material defined by this specification is a combination of post consumer recycled thermoset elastomer (SBR and/or a blend of SBR and natural rubber) and a polyurethane binder. The content of recyclate is 90% minimum derived from used tir
3、es. 2. APPLICATION This specification was released originally for die cut material used in radiator air baffles, wheelhouse splash shields, fuel tank cushion blocks, spacers sight shields and mud flaps. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part pr
4、oducers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MATERIAL TESTING 3.4.1 Preparation of Test Specimens Whenever possible, all test specimens shall be die-cut from the finished parts. When not feasible, specimens cut from molded test sheets manu
5、factured from the same material and 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 ORIGINAL PROPERTIES 3.5.1 Density 1.03 - 1.16 g/cm3(ISO 1183, Method A/ASTM D 297) 3.5.2 Hardness, Durometer A 69 +/- 5 (IS
6、O 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.5.3 Tensile Strength, min WMD 3.3 MPa (ASTM D 412, Die C) AMD 3.6 MPa 3.5.4 Elongation at Break, min WMD 105% (Test Method according to para 3.5.3) AMD 50% ENGINEERING MATERIAL SPECIFICATIONWSS-M2D492-A2Pr
7、inted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 2 3.5.5 Tear Strength, min WMD 24 kN/m (ISO 34, Method B, Procedure (a)/ AMD 25 kN/m ASTM D 624, Die B) 3.5.6 Brittleness Point, max -40 C (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.5.7 Ozone Resistance, m
8、ax Rating 0 (FLTM BP 101-01, Procedure A) 3.5.8 Compression Set, max 75% (ISO 813/ASTM D 395, Method B, except 25% compression, plied-up specimens, 22 h at 70 +/- 2 C) 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 70 +/- 2 C) 3.6.1 Hardness Change +/- 10 3.6.2 Tensile Strengt
9、h Change, max 25% 3.6.3 Elongation Change, max 25% 3.6.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 70 +/- 2 C) 3.7.1 Hardness Change +/- 10 3.7.2 Tensile Strength Change, max 60% 3.7.3 Elon
10、gation Change, max 60% 3.7.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 MATERIAL IDENTIFICATION FOR RECYCLING PURPOSES SBR
