1、 FORD LABORATORY TEST METHOD BO 021-03 Date Action Revisions 2001 03 27 Revised Editorial no technical change A. Cockman 1992 07 27 Printed copies are uncontrolled Page 1 of 3 Copyright 2001, Ford Global Technologies, Inc. METHOD FOR DETERMINING FLOW UNDER LOAD OF VARIOUS PLASTIC MATERIALS AT MODERA
2、TE TEMPERATURES Application This procedure is used to determine the flow characteristics of various plastic materials while under load at moderate temperatures up to and including 149 C. Apparatus Required Test fixture as shown in Figure 1. Temperature controlled oven which can be stabilized at 149
3、/- 3 C. Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. Procedure 1.
4、 Test samples to be molded in accordance with the raw material suppliers recommendation. 2. Cut test pieces to approximately 13 x 13 mm by supplied thickness. Condition samples as required immediately before testing. 3. Use test fixture as shown in Figure 1. 4. Insert one stack of test pieces on eac
5、h side of center bolt. Sample to be 13 mm thick. Pieces may be stacked to obtain this thickness. Calibrate the spring prior to testing to obtain height at 454 kg load. Compress calibrated spring to predetermined height for 454 kg by tightening the bolt to required height. 5. Measure distance “D“1 wi
6、th a micrometer. FORD LABORATORY TEST METHOD BO 021-03 Page 2 of 3 Copyright 2001, Ford Global Technologies, Inc. 6. Place fixture in oven at specified temperature for 24 h. Remove and allow to cool to 23 +/- 2 C. 7. Remeasure distance “D“2. 8. D 1 D 2 x 100 = % flow D1 9. Repeat (using new samples
7、 two more times). 10. Record % flow for each stack tested (not average). Conditions: Load 141 kg/cm2 Temperature: As indicated on engineering specification. 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. FORD LABORATORY TEST METHOD BO 021-03 Page 3 of 3 Copyright 2001, Ford Global Technologies, Inc. METHOD FOR DETERMINING FLOW UNDER LOAD OF VARIOUS PLASTIC MATERIALS AT MODERATE TEMPERATURES Figure 1
