1、FORD LABORATORY TEST METHOD EU BN 015-02 2001 0822 COMPRESSION AND RECOVERY OF TEXTILE MATERIALS Revised Editorial - no technical change A. Cockman Application This method is used to measure the compression and recovery of fibre padding and similar materials in the normal and aged condition. Apparat
2、us Required Steel Plate 100 x 100 x 3 mm weighing approximately 250 g. Compress ion Tester A compression machine capable of compressing the specimen at a rate of 50 mm/minute without impact, is required. The instrument must indicate the load applied and may be motor or hand driven. Mechanical Convec
3、tion Oven Capable of maintaining a constant temperature of 80 +/- 2 OC. Conditioning and Test Conditions All test values indicated herein are based on material conditioned in acontrolled atmosphere of 23 +/- 2 OC and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested und
4、er the same conditions unless otherwise specified. Procedure Method A - Compression and Recovery - Normal 1. Cut 100 x 100 mm specimens at random from across the width of the roll and build up to a pile not less than 25 mm in thickness. 2. Place the 1 O0 x 1 O0 mm steel plate over the pile and place
5、 in the compression tester. I Date I Action I Revisions I Copynght02001, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD EU BN 015-02 3. Apply a 2.2 kg load for one minute. Remove the load and measure the thickness of the sample at the centre of the four sides of the steel plate. Compute t
6、he average of these values and record as thickness TI. 4. Apply a load of 34 kg at the rate of 50 mm/minute, lock the scale and again measure the average height of the sample and record as T2. 5. Hold at the 34 kg load for 5 minutes, remove load and allow to recover for 5 minutes with the steel plat
7、e still on the sample. Measure and record the average thickness T3. Method B - Compression and Recovery After Ageing 1. Cut 1 O0 x 1 O0 mm specimens at random from across the width of the roll. 2. Age test specimens for 24 h at 80 +/- 1 OC in the oven, and then allow to stand for 30 minutes at 20 +/
8、 2 OC and 65 +/- 3 % relative humidity. 3. Build up the specimens into a pile not less than 25 mm thick. 4. Continue the test as described in Method A, Steps 2 - 5. Evaluation Calculate the compression and recovery of the specimen for both Method A and B as follows: % Compression = T, - T7 x 100 TI % Recovery = T, - T7 x 1 O0 TI - T2 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 Copyright02001, Ford Global Technologies, Inc
