ASTM D2370-1998(2002) Standard Test Method for Tensile Properties of Organic Coatings《有机涂层抗拉性能试验方法》.pdf
《ASTM D2370-1998(2002) Standard Test Method for Tensile Properties of Organic Coatings《有机涂层抗拉性能试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D2370-1998(2002) Standard Test Method for Tensile Properties of Organic Coatings《有机涂层抗拉性能试验方法》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 2370 98 (Reapproved 2002)Standard Test Method forTensile Properties of Organic Coatings1This standard is issued under the fixed designation D 2370; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last rev
2、ision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method covers the determination of
3、 the elon-gation, tensile strength, and stiffness (modulus of elasticity) oforganic coatings when tested as free films.1.2 The values stated in inchpound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.3 This standard does not purport to address all
4、 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. Specific hazardstatements are given in Section 7.2. Referenced
5、Documents2.1 ASTM Standards:D 823 Practices for Producing Films of Uniform Thicknessof Paint, Varnish, and Related Products on Test Panels2D 882 Test Methods for Tensile Properties of Thin PlasticSheeting3D 1005 Test Methods for Measurement of Dry-Film Thick-ness of Organic Coatings Using Micrometer
6、s2D 3980 Practice for Interlaboratory Testing of Paint andRelated Materials4D 4708 Practice for Preparation of Uniform Free Films ofOrganic Coatings23. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 elongationthe increase in specimen length from thepoint of initial load applicat
7、ion to the point of film rupture ina tension test.3.1.2 gage lengththe initial length of the test specimenbetween the jaws of the tensile tester.3.1.3 stiffness (modulus of elasticity)the load per unit arearequired to elongate the film 1 % from the first point in thestress-strain curve where the slo
8、pe becomes constant.3.1.4 stress-strain curvethe curve resulting from a plot oftensile load against the distance of jaw separation (elongationof specimen).3.1.5 tensile strength (nominal)the load per original unitarea at which a specimen fails or yields in a tension (pull) test.4. Summary of Test Me
9、thod4.1 Free unsupported films of the materials to be tested areprepared. The tensile properties of the free films are determinedby means of a tensile testing apparatus.5. Significance and Use5.1 Tensile properties determined by this method are ofvalue in studying the behavior of coatings subjected
10、to envi-ronmental stresses, such as those produced by aging andweathering. (See Refs. (1-10).)55.2 Tensile properties may vary with specimen thickness,method of preparation, gage length, rate of load application,tensile tester response, and type of grips used. Consequently,where precise comparative
11、results are desired, these factorsmust be carefully controlled.6. Apparatus6.1 Equipment for applying films of uniform thickness asdescribed in Practices D 823.6.2 Micrometer Film Thickness Gage as described in TestMethod D 1005.6.3 Tensile Tester of the constant rate of jaw separationtype, equipped
12、 with load cells having capacities of 0.2 to 4.4 lb(100 to 2000 g), and equipped with an indicating device suchas an electronic constant speed chart recorder, a digital devicethat displays numerical values, or a printer that records thenumerical values.1This test method is under the jurisdiction of
13、ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.23 on Physical Properties of Applied Paint Films.Current edition approved Dec. 10, 1998. Published February 1999. Originallypublished as D 2370 65 T. Last previous edition
14、 D 2370 92.2Annual Book of ASTM Standards, Vol 06.01.3Annual Book of ASTM Standards, Vol 08.01.4Discontinued 1998; see 1997 Annual Book of ASTM Standards, Vol 06.01.5Boldface numbers in parentheses refer to the list of references at the end of thisstandard.1Copyright ASTM International, 100 Barr Har
15、bor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.4 Precision Specimen Cutter having a double blade witha foot to hold the sample in place.66.5 Alternative Substrates on which test material can bedeposited.6.5.1 Dental Tin Foil, preferably 1 mil (25 m) thick.76.5.2 Sheet of F
16、EP (fluorinated ethylene-propylene),8pref-erably 2 mils (50 m) thick, coated with a dry lubricant.9NOTE 1Other substrates that may be suitable are 10-mil (250-m)thick polyethylene (7), photographic paper (8), polished steel (9), andfluoropolymer coated metal panels.7. Hazards7.1 MercuryMercury is a
17、toxic metallic liquid. Its vaporsare extremely hazardous. Small amounts of spilled mercurycan vaporize sufficiently at room temperature to exceed thethreshold limit values (TLV) of the vapor. Use with adequateventilation (in a hood) and clean up spills immediately. Weargloves when handling mercury.
18、Keep containers closed. Drop-lets of mercury can be picked up by using a small glass pipetconnected to a suction flask with a rubber hose.8. Test Specimens8.1 The test specimens shall be free films having a widththat is between12 and 1 in. (13 and 25 mm). No specimen shallvary by more than 62 % in w
19、idth along its entire length. Thelength shall be at least 2 in. (50 mm) longer than the gagelength selected for the test.8.2 Prepare free films by one of the procedures described inTest Method D 4708.9. Calibration9.1 Balance, zero, and calibrate the load weighing andrecording system of the tensile
20、tester in accordance withmethods specified by the manufacturer.10. Conditioning10.1 Unless otherwise agreed upon between the producerand the user, condition the test specimens for at least 24 h at73.5 63.5F (23 62C) and 50 % relative humidity and test inthe same environment.11. Procedure11.1 Select
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMD237019982002STANDARDTESTMETHODFORTENSILEPROPERTIESOFORGANICCOATINGS 有机 涂层 性能 试验 方法 PDF

链接地址:http://www.mydoc123.com/p-512760.html