1、 FORD LABORATORY TEST METHOD BP 001-04 Date Action Revisions 2001 04 30 Revised Editorial no technical change A. Cockman 1992 07 28 Printed copies are uncontrolled Page 1 of 6 Copyright 2001, Ford Global Technologies, Inc. COMPRESSION CHARACTERISTICS OF CURED SILICONE POLYGEL Application This is a p
2、rocedure for determining the percent compression under a given load of a cured silicone polygel. Apparatus Required Sample Molds 3 required. See Figure 1. Cylinder and Piston Assembly 1 required. See Figure 1. Tensile Testing Machine Range to 20,000 pounds minimum, equipped with deflectometer and re
3、corder or equivalent. Source: Tinius Olsen Testing Machine Co. Easton Road Willow Grove, PA 19090 Analytical Balance Mettler Model H10T or equivalent. Source: VWR Scientific P.O. Box 187 Allen Park, MI 48101 Storage Bottles VWR Catalog Number 16195-066 or equivalent. Oven VWR Catalog Number 52223-02
4、0 or equivalent. Rust Inhibitor Stauffer SWS-C-449 (DO NOT SUBSTITUTE). Source: Stauffer Chemical Company P.O. Box Adrian, MI 49221 FORD LABORATORY TEST METHOD BP 001-04 Page 2 of 6 Copyright 2001, Ford Global Technologies, Inc. Naphtha Ford Standard M557 or equivalent. Caution: This material is fla
5、mmable. Observe caution in its use. 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 otherw
6、ise specified. Procedure 1. Clean 3 molds with naphtha and brush. Coat inside surfaces with rust inhibitor and allow to stand until dry. Rust inhibitor acts as a mold release and is compatible with the polygel fluid. 2. Fill the 3 molds with silicone fluid sample to approximately 1/4 inch from top.
7、Allow samples to stand for at least 4 hours or until all air bubbles have disappeared. 3. Place the filled molds in preheated oven at 400 +/- 5 F for one hour. Remove from oven and allow to cool to 23 +/- 2 C. 4. Carefully remove sample (slug) from mold. If necessary, compressed air may be blown in
8、along sides of mold to facilitate sample removal. Slug must not be broken. Trim the slug by taking slices off the top until the sample weighs 65 +/- 0.05 grams. 5. Set tensile machine up for compression testing on 20,000 pound scale with 0.2 in/minute crosshead speed. 6. Insert weighed slug into cyl
9、inder, rounded end down. Inspect rubber seal on piston assembly. Replace seal after twenty tests, or whenever damage to seal is noted. Place piston assembly in cylinder on top of sample slug. See Figure 2. 7. Compress slug to 8,000 pounds, hold for 5 minutes, and reduce load to 2,000 pounds. 7a. Wit
10、h recorder operating, increase load to 20,000 pounds and immediately decrease to 0 load, at 0.2 in/minute crosshead speed. 7b. Repeat step 7a on separate area of recorder chart. Remove piston and sample. 8. Test the second sample through steps 6, 7, 7a and 7b. Retain the third sample for verificatio
11、n. Store all samples, as well as a sample of uncured polygel in labeled bottles. 9. Measure the displacement in inches from the recorder chart on the relaxation curve. See Figure 3. Average the first and second runs and determine the percent compression from Table 1. Report as required in the Engine
12、ering 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 BP 001-04 Page 3 of 6 Copyright 2001, Ford Global Technologi
13、es, Inc. COMPRESSION CHARACTERISTICS OF CURED SILICONE POLYGEL Table 1 Cured Silicone Compressibility Chart DISP. %COMP. DISP. %COMP. DISP. %COMP. DISP. %COMP. DISP. %COMP. .300 7.377 .340 8.360 .380 9.344 .420 10.328 .460 11.311 .301 7.401 .341 8.385 .381 9.369 .421 10.352 .461 11.336 .302 7.426 .3
14、42 8.410 .382 9.393 .422 10.377 .462 11.360 .303 7.451 .343 8.434 .383 9.418 .423 10.401 .463 11.385 .304 7.475 .344 8.459 .384 9.442 .424 10.426 .464 11.410 .305 7.500 .345 8.483 .385 9.467 .425 10.451 .465 11.434 .306 7.524 .346 8.508 .386 9.492 .426 10.475 .466 11.450 .307 7.549 .347 8.533 .387 9
15、.516 .427 10.500 .467 11.483 .308 7.574 .348 8.557 .388 9.541 .428 10.524 .468 11.508 .309 7.598 .349 8.582 .389 9.565 .429 10.549 .469 11.532 .310 7.623 .350 8.606 .390 9.590 .430 10.573 .470 11.557 .311 7.647 .351 8.631 .391 9.614 .431 10.598 .471 11.582 .312 7.672 .352 8.656 .392 9.639 .432 10.62
16、3 .472 11.606 .313 7.697 .353 8.680 .393 9.664 .433 10.647 .473 11.631 .314 7.721 .354 8.705 .394 9.688 .434 10.672 .474 11.655 .315 7.746 .355 8.729 .395 9.713 .435 10.696 .475 11.680 .316 7.770 .356 8.754 .396 9.737 .436 10.721 .476 11.705 .317 7.795 .357 8.778 .397 9.762 .437 10.746 .477 11.729 .
17、318 7.819 .358 8.803 .398 9.787 .438 10.770 .478 11.754 .319 7.844 .359 8.828 .399 9.811 .439 10.795 .479 11.778 .320 7.869 .360 8.852 .400 9.836 .440 10.819 .480 11.803 .321 7.893 .361 8.877 .401 9.860 .441 10.844 .481 11.828 .322 7.918 .362 8.901 .402 9.885 .442 10.869 .482 11.852 .323 7.942 .363
18、8.926 .403 9.910 .443 10.893 .483 11.877 .324 7.967 .364 8.951 .404 9.934 .444 10.918 .484 11.901 .325 7.992 .365 8.975 .405 9.959 .445 10.942 .485 11.926 .326 8.016 .366 9.000 .406 9.983 .446 10.967 .486 11.950 .327 8.041 .367 9.024 .407 10.008 .447 10.992 .487 11.975 .328 8.065 .368 9.049 .408 10.
19、033 .448 11.016 .488 12.000 .329 8.090 .369 9.074 .409 10.057 .449 11.041 .489 12.024 .330 8.115 .370 9.098 .410 10.082 .450 11.065 .490 12.049 .331 8.139 .371 9.123 .411 10.106 .451 11.090 .491 12.073 .332 8.164 .372 9.147 .412 10.131 .452 11.114 .492 12.098 .333 8.188 .373 9.172 .413 10.155 .453 1
20、1.139 .493 12.123 .334 8.213 .374 9.196 .414 10.180 .454 11.164 .494 12.147 .335 8.237 .375 9.221 .415 10.205 .455 11.188 .495 12.172 .336 8.262 .376 9.246 .416 10.229 .456 11.213 .496 12.196 .337 8.287 .377 9.270 .417 10.254 .457 11.237 .497 12.221 .338 8.311 .378 9.295 .418 10.278 .458 11.262 .498
21、 12.246 .339 8.336 .379 9.319 .419 10.303 .459 11.287 .499 12.270 .500 12.295 FORD LABORATORY TEST METHOD BP 001-04 Page 4 of 6 Copyright 2001, Ford Global Technologies, Inc. COMPRESSION CHARACTERISTICS OF CURED SILICONE FLUID Figure 1 FORD LABORATORY TEST METHOD BP 001-04 Page 5 of 6 Copyright 2001, Ford Global Technologies, Inc. COMPRESSION CHARACTERISTICS OF CURED SILICONE FLUID Figure 2 FORD LABORATORY TEST METHOD BP 001-04 Page 6 of 6 Copyright 2001, Ford Global Technologies, Inc. COMPRESSION CHARACTERISTICS OF CURED SILICONE FLUID Figure 3
