FORD FLTM BP 117-1-2001 POLYMERIC MATERIALS - HIGH VISCOSITY LUBRICANT COMPATIBILITY.pdf

1、FORD LABORATORY TEST METHOD BP 117-01 Date 2001 O924 1991 o9 o9 POLYMERIC MATERIALS - HIGH VISCOSITY LUBRICANT COMPATIBILITY Action Revisions Revised Editorial - no technical change A. Cockman Application This test method describes a technique for immersing automotive elastomeric materials and compo

2、nents in high viscosity lubricants (greases) and references existing methods for observing changes in physical properties resulting from the immersion. Reference Documents ASTM D 1349 Practice For Rubber, Standard Temperatures and Atmospheres For Testing and Conditioning. ASTM D 3183 Preparation of

3、Pieces For Test Purposes From Products ASTM D 2000 Rubber Products in Automotive Applications (ASTM D 412, D 471, D 573, D 624) FLTM BP 106-04 Elastomeric Materials - Mounting For Microhardness Test Apparatus 150 mm O.D., 20 mm depth with matching glass cover Spatula Analyt ical Balan ce Precision +

4、/- 0.0001 g Glassware Refer to ASTM D 471 Tensile Tester Copyght02001, Ford GlobalTechnologies, Inc FORD LABORATORY TEST METHOD BP 117-01 Test Specimen Dies Refer to ASTM D 412 and D 624 Thickness Gages Refer to ASTM D 412 and D 624 Oven Refer to ASTM D 573 IRHD Microhardness and Durometer Testers R

5、efer to ASTM D 1415 and D 2240 So Ive n t Reagent grade ethanol Paper Towels - lint free Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 OC and 50 +/- 5 % relative humidity for not less than 24 h prior to test

6、ing and tested under the same conditions unless otherwise specified. Procedure 1. Coat the bottom of the petri dish with grease to a depth of approximately 4 mm. 2. Evenly distribute the test pieces upon this first layer of grease and carefully apply another layer approximately 4 mm thick. 3. Constr

7、uct successive layers as needed. When evaluating a material for stress-strain, hardness, tear, and volume changes, three layers of elastomeric specimens with a final layer of grease will require the entire depth of the petri dish. Evaluate only one polymer per ageing assembly. 4. Place the assembly

8、into a preheated oven at the prescribed temperature and period of time indicated in the applicable Engineering Material Specification or Drawing. 5. Remove the assembly from the oven and allow to cool to room temperature (23 +/- 2 OC) for one h. Page 2 of 3 CopyrightO2001, Ford Global Technologies,

9、Inc FORD LABORATORY TEST METHOD BP 117-01 6. Remove the test specimens from the grease, clean off grease using a spatula followed by ethanol- saturated paper towels. 7. Immediately evaluate for required properties as per the applicable Engineering Materials Specification. Evaluation Compute the chan

10、ges calculated in percent as follows: (Final) - (Oriainal) x 100 = Percent Change (Original) Report the individual, median, or average values as required. Report the duration and temperature of the test, exposure medium, and quality observations. Chemicals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities. Page 3 of 3 CopyrightO2001, Ford Global Technologies, Inc