1、FORD LABORATORY TEST METHOD BP 115-01 Date 2001 O924 1991 o1 02 COPPER TARNISHING BY ELASTOMERS IN THE PRESENCE OF GASOLINE Action Revisions Revised Editorial - no technical change A. Cockman Application This test method is a modification of ASTM D 130, “Detection of Copper Corrosion from Petroleum
2、by the Copper Strip Tarnish Test“, and is used to determine the tarnishing effect of elastomeric materials on copper in the presence of Fuel “C“. Apparatus and Materials Required Laboratory Ventilation Facilities Adequate, explosion-proof laboratory ventilation to handle Fuel C vapor must be availab
3、le; includes explosion-proof electrical connectors. Hot Plate - optional hot water bath Explosion-proof; temperature controllable. Erlenmeyer Flask 1 O00 mL; graduated; with 45/50 ground glass tapered outer joint Condenser and Cold Water Supply Alihn; water-cooled; with 45/50 ground glass inner join
4、t Forceps - stainless steel ASTM Copper Strip Corrosion Standard Copper Strips As specified in ASTM D 130, 75 x 12 x 1.5 to 3.0 mm, with a hole in one end Stainless Steel Wire Approximately 30 mm in length, diameter that easily passes through the hole in the copper strip Filter Paper - ashless Fuel
5、Fuel “C“, or as specified in the relevant Engineering Materials Specification. Copynght02001, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD BP 115-01 Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2
6、 OC and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. Procedure Note: 1. 2. 3. 4. 5. 6. 7. 8. 9. This procedure shall be conducted utilizing an appropriate laboratory hood. Signs stating “NO OPEN FLAME“, “NO SMOK
7、ING“ shall be prominently displayed. Always inspect the Erlenmeyer flask for cracks. Never touch the copper strip with fingers; use forceps. Exercise care in adjusting the hot plate temperature. Prepare a copper strip as specified in ASTM D 130. Cut 1 O +/- 0.5 g of the elastomeric sample into appro
8、ximately 2.5 mm square pieces and place into the flask, on a stainless steel screen approximately 5 mm from the bottom of the flask. Add Fuel C to the 500 mL mark of the flask. Attach the copper strip (insert through the hole and bend) to the wire and pass the wire up through the condenser. Attach t
9、he condenser to the flask and adjust the wire length (from the top of the condenser) so that the strip is vertical and totally immersed in the Fuel C and suspended 10 mm above the elastomeric sample. Place the apparatus at 23 +/- 2 OC on the hot plate (or in the water bath), adjust the water flow th
10、rough the condenser to prevent evaporation of fluid, and adjust the hot plate (water bath) temperature so that the Fuel C refluxes gently (2 - 5 drops per second). Allow to stand for 24 h, turn off the hot plate (water bath), and allow the Fuel C to cool to 23 +/- 2 OC, OR reflux for 8 h, cool to 23
11、 +/- 2 OC for 16 h, reflux for another 8 h, cool to 23 +/- 2 OC for 16 h, and allow to cool to 23 +/- 2 OC. Remove the strip using forceps, blot with filter paper, and compare the exposed strip to the ASTM Copper Strip Corrosion Standard. Interpret and report the corrosiveness in accordance with the classifications listed in ASTM D 130. 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 2 of 2 Copynght02001, Ford Global Technologies, Inc
