1、ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 09 16 Revised Updated and renumbered 1983 03 22 Released PCR 894906-P Printed copies are uncontrolled Page 1 of 3 ADHESIVE, POLYAMIDE - HOT MELT - LOW FLOW ESP-M2G261-A 1. SCOPEThe material defined by th
2、is specification is a heat activated (hot melt) injection moldablethermoplastic polyamide resin.2. APPLICATIONThis specification was released originally for material used as an electrical potting compound forneutral start switches on automatic transaxles.3. REQUIREMENTS3.1 STANDARD REQUIREMENTS FOR
3、PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 COLOR Transparent Amber 3.3 DENSITY 0.98 - 1.00 g/cm3 (ASTM D 792) 3.4 HARDNESS, DUROMETER “A“ 80 - 90 (ASTM D 2240) 3.5 SOFTENING POINT, min 1
4、75 C (ASTM E 28) 3.6 PROPERTY CHANGES AFTER AIR AGE (70 h at 150 C in a convection oven) Test Method: Cut sample into 80 mm lengths and suspend in oven. After immersion cool sample to room temperature. 3.6.1 Hardness, Durometer “A“, max -10 3.6.2 Length, max -2% 3.6.3 Weight, max -3% NOT TO BE USED
5、FOR NEW DESIGN2014 12 08 N Status No replacement named L. Sinclair, NAENGINEERING MATERIAL SPECIFICATION ESP-M2G261-A Page 2 of 3 Copyright 2002, Ford Global Technologies, Inc. 3.7 PROPERTY CHANGES AFTER EXPOSURE TO HUMIDITY (70 h at 38 C in 100% RH) Test Method: Cut sample into 80 mm lengths and su
6、spend in humidity cabinet. After immersion cool sample room temperature. 3.7.1 Hardness, Durometer “A“, max -10 3.7.2 Length, max -2 % 3.7.3 Weight, max +4 % 3.8 ADHESION CHARACTERISTICS 3.8.1 Normal Adhesion No Adhesion Failure Test Method: . Prepare test samples as described in para 3.8.4. . Evalu
7、ate adhesion by first making two parallel cuts, 25 mm apart, across the material ribbon. Loosen one edge between cuts and attempt to peel at 180 . Observe for any indication that the material fails to adhere to substrate. . Save panels for thermal cycle test, para 3.8.3. 3.8.2 Low Temperature Resist
8、ance No Cracking or (FLTM BV 101-02) Adhesion Failure Test Method: . Prepare test samples as described in para 3.8.4. . Condition prepared test panels for 4 h at -29 C and slam a total of 10 times. 3.8.3 Thermal Cycle Test No Cracking or Adhesion Failure Test Method: . Condition test panels prepared
9、 in para 3.8.1 for 24 h at 23 +/- 2 C. . Subject the prepared panels to 5 cycles with each cycle consisting of: 4 h at 150 C +/- 2 C 4 h at 38 +/- 2 C and 98 +/- 2% relative humidity 16 h at -40 +/- 3 C 4 h at 38 +/- 2 C and 98 +/- 2% relative humidity 4 h at 150 +/- 2 C 16 h at -40 +/- 3 C ENGINEER
10、ING MATERIAL SPECIFICATION ESP-M2G261-A Page 3 of 3 Copyright 2002, Ford Global Technologies, Inc. . After completion of all exposure cycles, evaluate adhesion as described in para 3.8.1. 3.8.4 Sample Preparation . Place container with the test material on a hot plate and heat 5 to 10 C above soften
11、ing point. Hold at temperature until the material is in a molten state. . Pour the molten material into a 25 x 150 x 1.3 mm mold. Allow material to cool to 23 +/-2 C then remove from mold. . Place material ribbon on a 33% glass filled nylon panel (ESB-M4D133- A, or equivalent) and heat for 5 minutes at 220 +/- 2 C in a horizontal position.
