1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 08 11 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.9, 4, 5 2001 05 10 Activated J. Williams Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 2 POLYOL, COMPONENT A FOR ENERGY ABSORBING FOAM WSS-M5D10-B
2、1. SCOPE The material defined by this specification is a modified polyether polyol with the necessary additives such as catalysts and stabilizers. 2. APPLICATION This specification was originally released for a material used for processing energy absorbing foam of bumper shells. 3. REQUIREMENTS Mate
3、rial specification requirements are to be used for initial qualification of materials. 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). 3.3 VISCOSITY 1800 +/- 200 mPa
4、 s (ASTM D 2849, test temperature 25 +/- 0.5 C, spindle No. 2, rotational frequency 12/minute) 3.4 DENSITY 1.05 +/- 0.02 Mg/m3 (ASTM D 1475, test temperature 23 +/- 1 C) 3.5 WATER CONTENT 2.8 +/- 0.2% (ASTM D 2849) 3.6 FORMATION OF LUMPS Pour 250 g of the component A, as delivered, through a wire me
5、sh (width of mesh 0.8 mm). The material shall show no oversize residue. 3.7 COLOR Black or according to Engineering Drawing. 3.8 FOAMING PROPERTIES To determine the reactivity of the component A an interaction with component B (isocyanate) according to S-M4D4900-A will be carried out. 3.8.1 Ratio of
6、 Components 1:0.64 ENGINEERING MATERIAL SPECIFICATION WSS-M5D10-B Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 2 Note: The following test equipments are necessary to carry out the tests: a) Laboratory stirrer with a mixing rotor of approximately 60 mm in di
7、ameter. Speed of rotation approximately 1500/minute. b) Paper beaker, unparaffinated, approximately 850 cm3 content, diameter 89 mm, height 137 mm. Source: Fa. Dr. Fred Stahl KG Winzerstrasse 75 D - 5300 Bonn 1 Tests shall be carried out at a temperature of 23 +/- 1 C and 50 +/- 5% relative humidity
8、 Procedure: Weigh into a paper cup with known tara weight 50 g of component A and 32 g of component B. Immediately after adding the component B stir the mixture for 10 seconds. Observe the foaming process and record with a stop watch the creaming and rising time. 3.8.2 Creaming Time 23 +/- 3 s Time in seconds from start of stirring until start of volume rise. 3.8.3 Rising Time 205 +/- 10 s Time in seconds from start of stirring until end of volume rise.
