1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2007 01 17 Revised Inserted 3.0; Deleted 3.1, 3.4.6, 3.8, 4; Corrected numbering in para 3 1983 07 22 Released B4E-5212/CENI-RD-503991-1 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 1 of 3 ACRYLIC MOLDING
2、 COMPOUND ESB-M4D9-A2 1. SCOPE The material defined by this specification is a thermoplastic acrylic molding compound with good weathering and heat resistance properties. 2. APPLICATION This specification was released originally for material used in exterior two-shot injection molded tail lamp lense
3、s. 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). 3.2 MOLDING COMPOUND 3.2.1 Flow Rate 13 - 17 g/10 min (ASTM D 1238, Condition “I“) 3.3 MOLDED TEST
4、 SPECIMEN 3.3.1 Preparation of Test Specimens All test specimens shall be injection molded in accordance with ASTM D 1897. The values of this specification are based on injection molded specimens unless otherwise specified. 3.3.2 Conditioning and Test Conditions All test values indicated herein are
5、based on material conditioned per ASTM D 618, Procedure B (48 h at 50 +/- 2 C) prior to testing, except for para 3.3.3 and 3.3.10, where material is conditioned in a controlled atmosphere of 23 +/- 2 and 50 +/- 5% relative humidity for not less than 24 h prior to testing. All tests are performed at
6、23 +/- 2 C and 50 +/- 5% RH unless otherwise specified. 3.3.3 Specific Gravity 1.17 - 1.19 (ASTM D 792) 3.3.4 Tensile Strength, min 9,000 psi (62 MPa) (ASTM D 638, Type I specimen, 0.125 in (3.2 mm) thick, 50 mm/min) 3.3.5 Elongation, min 3% (ASTM D 638, Type I specimen, 0.125 in (3.2 mm) thick, 50
7、mm/min) ENGINEERING MATERIAL SPECIFICATION ESB-M4D9-A2 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 3 3.3.6 Flexural Modulus, min 350,000 psi (2.4 GPa) (ASTM D 790, Method I, Procedure A, 0.250 in (6.4 mm) thick specimen) 3.3.7 Flexural Strength, min 14,000
8、 psi (96 MPa) (ASTM D 790, Method I, Procedure A, 0.250 in (6.4 mm) thick specimen) 3.3.8 Impact Strength, min (ASTM D 256, 0.125 in (3.2 mm) thick specimen) Izod 0.35 ft.lb/in (18.6 J/m) Unnotched (No Notch Either Side) 4.0 ft.lb/in (213 J/m) 3.3.9 Deflection Temperature, min 76 C (ASTM D 648, 0.25
9、0 in (6.4 mm) thick specimen, 264 psi (1.82 MPa) 3.3.10 Water Absorption, max 0.4% (ASTM D 570, 24 h immersion) 3.4 MOLDED PART 3.4.1 Color As specified on engineering drawing, and it shall match the master sample approved for production on file in the Quality Control or Test Laboratory. 3.4.2 Appea
10、rance Shall be uniform in density, texture and finish, free of visible porosity, warpage, heat scorch, checks, cracks, chipped edges and uneven surfaces. They shall also be free of other contamination. 3.4.3 Accelerated Weathering After 1600 h exposure in an Atlas XW Weatherometer per FLTM BO 101-01
11、 change in visual appearance shall not exceed a rating of 5 per the AATCC Gray Scale for evaluating change in color. 3.4.4 Outdoor Exposure (SAE J 576) After outdoor exposure tests defined in para 3.3 of SAE J 576 for material used as defined in para 2.2.1, the appearance shall meet the requirements
12、 of para 4.2.4 of the same document. 3.4.5 Decorability When decorating is required on parts made of this material, they must be capable of accepting this decoration in accordance with the performance specification shown on the engineering drawing. ENGINEERING MATERIAL SPECIFICATION ESB-M4D9-A2 Prin
13、ted copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 3 3.5 FLAMMABILITY, max 4 in (101 mm)/min (FLTM BN 024-02, without the lot sampling plan) In addition, the test specimen shall not exhibit any flashing or sudden flaming on either surface in excess of the above maxim
14、um value. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 MOLD SHRINKAGE 0.003 - 0.006 (ASTM D 955, 48 h) 5.2 HARDNESS, ROCKWELL “M“ 89 (ASTM D 785) 5.3 DEFLECTION TEMPERATURE, min 90 C (ASTM D 648, 0.250 in (6.4 mm) thick specimen, 66 psi (0.45 MPa)
