1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 21 N-STATUS No Replacement Named C. Mracna, NA 2004 07 16 Revised Para 3.0 inserted; para 3.5 & 4 deleted 1977 09 27 Released AH1-374 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 POLYURETHAN
2、E, MICROCELLULAR ELASTOMER - LIQUID ESB-M2D263-A3 REACTION MOLDED (LRM) - INTERMEDIATE MODULUS - IMPROVED TEMPERATURE PERFORMANCE - PAINTABLE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermosetting micro-cellular polyurethane formed from liquid components
3、 introduced together and allowed to react in the part mold cavity. This material is less temperature sensitive than ESB-M2D263-A2 and provides improved performance under normal hot and cold environmental service conditions. 2. APPLICATION This specification was released originally for material used
4、in flexible front and rear fascia applications. 3. REQUIREMENTS The material shall meet all requirements of ESB-M2D263-A2 in addition to the following requirements: 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirem
5、ents For Production Materials (WSS-M99P1111-A). 3.1 FLEXURAL MODULUS (ASTM D 790, Method “I“, Procedure B) At -30 C 52,500 - 109,500 psi (362-753 MPa) At 23 C 18,750 - 33,000 psi (129-227 MPa) At 70 C 7,500 - 15,000 psi (52-103 MPa) 3.2 WATER ABSORPTION, by weight max (FLTM BO 129-02) After 24 h 3.5
6、 After 240 h 5.0 % 3.3 WATER IMMERSION DIMENSIONAL STABILITY, expansion max (FLTM BO 129-01) After 240 h 0.015 in/in (mm/mm) ENGINEERING MATERIAL SPECIFICATIONESB-M2D263-A3 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.4 WATER IMMERSION WARP TEST, warp
7、height max (FLTM BO 29-3) After 24 h 0.75 in (19 mm) After 240 h 1.10 in (28 mm) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 HARDNESS, DUROMETER “D“ 53 (ASTM D 2240) 5.2 MOLD SHRINKAGE 0.012 in/in (mm/mm)
