1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2009 11 19 N-STATUS No replacement named J. Crist, NA 1979 07 17 Released AJ1-6000-236 Page 1 of 3 LAMINATE, RIGID POLYSTYRENE FOAM/FILM - THERMOFORMABLE ESB-M4D400-A HEADLINING SUBSTRATE NOT TO BE USED FOR
2、NEW DESIGN 1. SCOPE: The material defined by this specification is a thermoformable rigid polystyrene laminate. 2. APPLICATION: This specification was released originally for material used as a molded headlining substrate. 3. REQUIREMENTS: All values herein are for the material before expansion and
3、forming. 3.1 CONDITIONING All test values indicated herein are based on materials conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity for 24 h prior to testing and tested under the same controlled conditions. 3.2 ADDITIONAL REQUIREMENTS In addition to the requirement
4、 listed herein, the formed and laminated assembly shall also meet the requirements of ESB-M15P1-A and ESB-M25P4-A when tested as a unitized or bonded one piece headliner. 3.3 CONSTRUCTION This material consists of high impact polystyrene film laminated to both sides of a rigid polystyrene foam. 3.4
5、THICKNESS (SAE J 315 b) Laminate max 0.155 in (3.9 mm) Cap Sheet 0.008 + 0.002 in (0.2 + .05/mm) 0.008 - 0.0001 in (0.2 - .025/mm) 3.5 WEIGHT, min (ASTM D 646) Laminate 127 lb/1000 ft2(0.620 kg/m2) Foam 45 lb/1000 ft2(0.220 kg/m2) ENGINEERING MATERIAL SPECIFICATION ESB-M4D400-A Page 2 of 3 3.6 BREAK
6、ING STRENGTH, min (ASTM D 828, 2 in (50 mm)/min jaw speed) MD 60 lb (333 N) AMD 50 lb (289 N) 3.7 TRANSVERSE STRENGTH, min (FLTM BS 5-1, 4 in (100 mm) span, 0.2 in (5 mm)/min crosshead speed) Either direction 4.0 lb (17.8 N) 3.8 FILM TO FOAM ADHESION (FLTM BU 12-1, 12 in (300 mm)/min) Both sides and
7、 directions to be evaluated. Average 7.5 oz/in (83 N/m) Absolute Minimum 5 oz/in (55 N/m) 3.9 FOAM EXPANSION (115 C for 1 h, 6 x 6 in (150 x 150 mm) sample) Sample must be a minimum age of 120 HRS Final Thickness 0.200 - 0.300 (5.08 - 8.00 mm) 3.10 DIMENSIONAL STABILITY, max (FLTM BS 3-1 (a) and (c)
8、 Humidity (a) +0.5% Heat (c) -0.5% 3.11 WARPAGE, max (FLTM BS 3-1 (a) and (c) Lay sample on flat surface and measure height of bottom surface. Divide height by sample size, 12 in (305 mm), to obtain percent warpage. Original 2% Humidity (a) 3% Heat (c) 3% 3.12 BURSTING STRENGTH, min 72.5 psi (500 kP
9、a) (ASTM D 2738, average of 20 tests) 3.13 SUPPLIERS RESPONSIBILITY Changes in formulation or processing shall not be made without prior approval as described in Supplier Procedure I-A. ENGINEERING MATERIAL SPECIFICATION ESB-M4D400-A Page 3 of 3 4. APPROVAL OF SUPPLIERS: Suppliers to this specification must be approved by the affected product engineering office. Procedure for gaining approval of a specific material to a new/existing ES-M specification is contained in Supplier Procedure I-A. Approved new suppliers will be added to the Engineering Materials Approved Source List.
