1、Designation: F 148 02Standard Test Method forBinder Durability of Cork Composition Gasket Materials1This standard is issued under the fixed designation F 148; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisio
2、n. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers three procedures for determi-nation of the binder durability of cork-containing materials.1.2 This standa
3、rd does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Terminology2.1 Definition:2
4、.1.1 disintegrationthe loss of binder cohesiveness result-ing in the specimen being reduced to separated cork granules.3. Summary of Test Method3.1 Specimen of the material are subjected to specific fluidsto determine the chemical durability of the binder by visualexamination for disintegration.4. S
5、ignificance and Use4.1 This test method is designed to measure the chemicalcure of the binder used in the manufacture of cork composi-tions. The results of this test method can be used only as aguide for its intended service in elevated temperature andenvironmental conditions.5. Apparatus5.1 Die, 64
6、5.2 mm2(1 in.2) in area, circular (28.6 mm (1.13in.) in diameter).5.2 Reflux Condenser and Erlenmeyer Flask, ground-glass,250-mL capacity.5.3 Metal Containers with Lids.5.4 Circulating Hot-Air Oven, maintained at 100 6 1C(212 6 2F).5.5 Laboratory Hood with Strong Draft.6. Hazards6.1 Conduct this tes
7、t method inside a laboratory hood witha strong draft.6.2 Place several glass boiling chips or stones into theErlenmeyer flask to ensure smooth boiling where needed.6.3 The tester conducting this test method should beequipped with suitable eye protection, acid-resistant gloves,and apron or laboratory
8、 coat.6.4 The Erlenmeyer flask should be thoroughly cooledbefore handling so as to prevent the possibility of a burn.7. Test Specimens7.1 Test specimens shall be circular disks approximately 28mm (1.1 in.) in diameter.7.2 Test specimen thickness shall be as agreed upon be-tween the producer and the
9、user. A nominal thickness of 3.175mm (0.125 in.) is commonly used.8. Conditioning8.1 Condition specimens for at least 46 h prior to testing ina cabinet or room with air circulation at 21 to 30C (70 to85F) and 50 to 55 % relative humidity.9. Procedures9.1 Procedure A, Water-Flotation TestPlace 75 mL
10、ofdistilled water in the Erlenmeyer flask and bring the fluid to arolling boil. Then insert three test specimens in the flask atopthe fluid and test for a period of 3 h. At the conclusion of thetest, examine the specimens for any signs of disintegration.9.2 Procedure B, Acid-Flotation TestUsing an E
11、rlenm-eyer flask with a reflux condenser on top, place 75 mL ofhydrochloric acid solution (35 % by weight concentration) inthe Erlenmeyer flask and bring the solution to a rolling boil.Then insert three test specimens in the flask atop the solutionand test for a period of 0.5 h. At the conclusion of
12、 the test,examine the specimens for any signs of disintegration.9.3 Procedure C, Oil-Flotation TestPlace approximately75 mL of ASTM No. 1 Oil2in a metal container and heat to100C (212F) in a hot-air oven. After the oil has reached100C, place three test specimens atop the oil and maintain thetest tem
13、perature for a period of 2 h. At the conclusion of thetest, examine the specimens for any signs of disintegration.10. Report10.1 Report the results as disintegration or no disintegrationafter flotation in the respective fluids.10.2 Report the following information:10.2.1 Complete sample description,
14、 including commercialdesignation, source, and manufacturer, and1This test method is under the jurisdiction of ASTM Committee F03 on Gasketsand is the direct responsibility of Subcommittee F03.40 on Chemical Test Methods.Current edition approved October 10, 2002. Published October 2002. Originallypub
15、lished as F 148 72. Last previous edition F 148 95.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.10.2.2 Date of production, if known.11. Precision and Bias11.1 No work has been done to test the precision and bias ofthis test method
16、. The results obtained from this test method arebased on a visual examination, and quantitative values associ-ated with precision data are not obtainable with this testmethod.12. Keywords12.1 binder; cork composition; disintegration; durability;gasketsASTM International takes no position respecting
17、the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard
18、 is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International
19、Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This
20、 standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).F 148 022
