FORD FLTM BP 154-1-2001 EXTRACTABLES IN FUEL HOSE.pdf

1、FORD LABORATORY TEST METHOD BP 154-01 2001 O925 EXTRACTABLES IN FUEL HOSE Revised Editorial - no technical change A. Cockman Application This method is used to determine the fuel soluble and insoluble material that is released when a polymeric fuel or vapor hose is exposed to a fueValcohol blend. 1.

2、 2. 3. 4. 5. 6. 7. 8. 9. 1 o. 1. 2. Equipment Required Oven: class A type with fuel handling capability. Hose plugs: 6 required. Hose clamps: 6 required. Parr type pressure vessels: Sized to hold fuel line, plugs and clamps. Heating block: Meeting ASTM D 381/ISO 6246. Gum beakers: Meeting ASTM D 381

3、/ISO 6246. Laboratory Balance: 0.1 mg accuracy Volumetric flask: 1 OOmL capacity Wash bottle: capable of use with CE1 O test fuel Full face shield, gloves, and other required safety equipment. Procedure Prepare at least 150mL of test fuel using the ratio of CEIO fuel: Water of (99:l) by volume. Cut

4、at least 3 samples of hose that each have an internal volume of IOOmL, (excluding the volume of the plugs). I Date I Action I Revisions I Copynght02001, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD BP 154-01 3. 4. 5. 6. 7. 8. 9. 1 o. 11. 12. 13. 14. 15. 16. 17. Insert a plug into one en

5、d of each hose and secure with a clamp. Carefully pour 50 mL of the test fuel into the open end of each tube. Insert the second plug into each hose and secure with a clamp. Place the sealed hose vertically into the pressure vessel (small diameter tubing may be coiled inside the vessel). Secure the p

6、ressure vessel, and place in a preheated 60 “C oven for 24 hours. At the end of the first 24 hour exposure, carefully remove the pressure vessel from the oven, and allow it to cool to room temperature. Carefully release any pressure in the vessel, open the vessel, and invert each sample so that the

7、portion of the hose previously exposed to vapor is now exposed to liquid fuel. Secure the pressure vessel, and place it back in the 60 “C oven for an additional 24 hours. At the end of the second 24 hour exposure, carefully remove the pressure vessel from the oven, and allow it to cool to room tempe

8、rature. Carefully release any pressure in the vessel, open the vessel, and remove the tube assembly. Gently agitate the liquid contents for 30 to 45 seconds by rocking end-to-end, occasionally rolling the sample to assure that all of the I.D. of hose receives agitation. Carefully remove one clamp an

9、d plug and pour the liquid contents into a weighed gum beaker. Remove the second clamp and plug from the tube, and using the wash bottle, wash the inside of the tube three times with approximately 10mL of CEIO per wash. The wash solution should be collected into the gum beaker. Repeat steps 13 and 1

10、4 for each of the samples, rinse each sample into a separate beaker. Cover the beakers lightly with aluminum foil and allow to stand for 16 hours. Observe for the presence of particles, cloudiness or flocculent in the fuel, and record. Also record any changes to the inside of the fuel tube. Page 2 o

11、f 3 Copynght02001, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD BP 154-01 18. Allow the samples to evaporate under a hood to approximately 50mL. 19. Perform unwashed gum content (ASTM D 381) on each sample, include washed gums if any material was noted in step 17. Substitute Fuel C for

12、nheptane as the wash solvent when running the washed gums. 20. On samples being submitted for initial approval, perform Infrared analysis of the unwashed and washed gums (if present) and keep the trace on file. Calculation Calculate the amount of extractables by the following equation: Extractables

13、(g/1 OOmL/m2) = (grams of residue x 2) / inside area of tube in m2 Report Report the soluble and insoluble extractables to the nearest 0.1 g/100mL/m2. Report individual value for each run, along with the mean value. Report any visual changes to the fuel or hose during the test. 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 Copynght02001, Ford Global Technologies, Inc