1、FORD LABORATORY TEST METHOD EU-BP 053-07 2001 0823 COMPRESSION SET OF FOAMED SEALING PROFILES Revised Editorial - no technical change A. Cockman Application This method is used to determine under constant load the compression set of foamed sealing profiles (made from rubber, elastomers etc.), after
2、a hot or cold ageing treatment. Apparatus Required Mec han ical Convect ion Oven Capable of maintaining a constant temperature of 1 O0 +/- 2 OC. Cold Box Capable of maintaining a constant temperature of - 40 +/- 2 OC. A box with a door opening at the top is preferred to minimise rapid changes in tem
3、perature whilst the compression tests are being performed. Angle Blocks For mounting specimens - dimensions see Figure 1. Clamping Device For compressing test assemblies - see Figures 2 & 4 ( r equivalent). Thickness Measuring Device With an accuracy of +/- 0.02 mm. Conditioning and Test Conditions
4、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 testing and tested under the same conditions unless otherwise specified. I I Date I Action I Revisions I I 19940228 I Copynght
5、02001, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD EU-BP 053-07 Procedure 1. Prior to testing condition sample for 24 hours at a temperature of 23 +/-2 OC and relative humidity of 65 +/- 3 % unless otherwise specified. 2. Prepare 3 test assemblies by cutting 3 specimens 50 mm long and
6、bonding them in the angle blocks as shown in Figure 3. 3. After complete drying of the adhesive, measure the height of the sealer lip as shown in drawing to an accuracy of +/- 0.2 mm at 3 points. The average indicates the original height “h“ of the sealer lip. 4. Place a test assembly into the clamp
7、ing device and compress the lip to the height (h,) indicated on the relevant component drawing. 5. While still under compression expose the test assembly for the time and temperature required by the relevant Engineering Specification in the oven or the cold box respectively. 6. After exposure remove
8、 the test assembly from the clamping device and condition at 23 +/- 2 OC and 50 +I- 5 % relative humidity if not otherwise specified for 30 minutes. Again measure the height of the sealer lip at 3 points and take the average (h2). Evaluation Calculate the compression set as follows: Compression Set
9、(%) = h - h, x 100 h - hl Where: h = Original height of the sealer lip in mm hl = Height of the sealer lip under compression in mm h2 = Height of the sealer lip after exposure and conditioning in mm Chemicals, materials, parts, and equipment referenced in this document must be used and handled prope
10、rly. Each party is responsible for determining proper use and handling in its facilities. Page 2 of 5 Copynght02001, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD EU-BP 053-07 COMPRESSION SET OF FOAMED SEALING PROFILES Sketch I Angle I Dimensions in mms. Sketch 2 Page 3 of 5 Copynght0200
11、1, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD EU-BP 053-07 COMPRESSION SET OF FOAMED SEALING PROFILES Dimension “a“ as identified on Engineering Drawing. Sketch 3 Page 4 of 5 Copynght02001, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD EU-BP 053-07 COMPRESSION SET OF FOAMED SEALING PROFILES DETAILS OF CLAMPING DEVICE -0.02 -120 * I u)+- - Base 2 Upper Part 3 Dimensions in mms. Page 5 of 5 Copynght02001, Ford Global Technologies, Inc
