ASTM D2229-2010 Standard Test Method for Adhesion Between Steel Tire Cords and Rubber《钢制轮胎帘布和橡胶支架的粘附力的标准试验方法》.pdf
《ASTM D2229-2010 Standard Test Method for Adhesion Between Steel Tire Cords and Rubber《钢制轮胎帘布和橡胶支架的粘附力的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D2229-2010 Standard Test Method for Adhesion Between Steel Tire Cords and Rubber《钢制轮胎帘布和橡胶支架的粘附力的标准试验方法》.pdf(7页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D2229 10Standard Test Method forAdhesion Between Steel Tire Cords and Rubber1This standard is issued under the fixed designation D2229; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numbe
2、r in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of the forcerequired to pull a steel cord from a block of vulcanized rubber.1.2 Although designed
3、primarily for steel cord, this testmethod may be applied with modifications to wire used inrubber products.1.3 This test method can also be used for evaluating rubbercompound performance with respect to adhesion to steel cord.1.4 The values stated in SI units are to be regarded as thestandard. No ot
4、her units of measurement are included in thisstandard.1.5 This standard 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
5、of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D76 Specification for Tensile Testing Machines for TextilesD123 Terminology Relating to TextilesD1566 Terminology Relating to RubberD2904 Practice for Interlaboratory Testing of a Textile TestMethod that Produces Norma
6、lly Distributed DataD6477 Terminology Relating to Tire Cord, Bead Wire,Hose Reinforcing Wire, and FabricsE105 Practice for Probability Sampling Of MaterialsE122 Practice for Calculating Sample Size to Estimate,With Specified Precision, the Average for a Characteristicof a Lot or Process3. Terminolog
7、y3.1 Definitions3.1.1 For definitions of terms relating to tire cord, bead wire,hose wire, and tire cord fabrics, refer to Terminology D6477.3.1.1.1 The following terms are relevant to this standard:adhesion, rubber compound, and steel cord.3.1.2 For definitions of terms relating to rubber, refer to
8、Terminology D1566.3.1.3 For definitions of other terms related to textiles, referto Terminology D123.4. Summary of Test Method4.1 The steel cords are vulcanized into a block of rubber andthe force necessary to pull the cords linearly out of the rubberis measured.5. Significance and Use5.1 This test
9、method is considered satisfactory for theacceptance testing of commercial shipments of steel tire cordbecause current estimates of between-laboratory precision forsingle materials are considered acceptable and the method hasbeen used extensively in the trade for acceptance testing.5.1.1 If there are
10、 differences or practical significances be-tween reported test results for two laboratories (or more),comparative tests should be performed to determine if there isa statistical bias between them, using competent statisticalassistance.As a minimum, the test samples should be used thatare as homogeno
11、us as possible, that are drawn from thematerial from which the disparate test results were obtained,and that are randomly assigned in equal numbers to eachlaboratory for testing. Other materials with established testvalues may be used for this purpose. The test results from thetwo laboratories shoul
12、d be compared using a statistical test forunpaired data, at a probability level chosen prior to the testingseries. If a bias is found, either its cause must be found andcorrected, or future test results must be adjusted in consider-ation of the known bias.5.2 The mold described in this test method i
13、s primarilydesigned for quality acceptance testing for steel cord where thesample size for each cord is 4 or a multiple thereof, but anymold/cavity combination which will provide the required testblock dimensions (Figs. 1 and 2) is acceptable.5.3 Appendix X1 contains suggested ranges of environmen-t
14、al conditions for aging tests.1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.19 on Tire Cord and Fabrics.Current edition approved Jan. 1, 2010. Published January 2010. Originallyapproved in 1963. Last previous edition
15、approved in 2004 as D2229 041. DOI:10.1520/D2229-04E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyr
16、ight ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.4 The property measured by this test method indicateswhether the adhesion of the steel cord to the rubber is greaterthan the cohesion of the rubber, that is, complete rubbercoverage of the
17、steel cord, or less than the cohesion of therubber, that is, lack of rubber coverage.6. Apparatus6.1 Mold (Figs. 2 and 3)The mold is designed to producefour test blocks with the preferred dimensions, each containing15 steel cords. The blocks are 200 mm long and 12.5 mm thick(embedded cord length). W
18、hen testing cords equal to or lessthan 1.7-mm diameter, the mold in Fig. 2 and Fig. 3 should beused to produce blocks, and when testing cords with a diametergreater than 1.7 mm, the mold should be suitably modified.Molds designed to produce any other number of test blocks ofthe required dimensions a
19、re acceptable, and molds designed toproduce blocks with different embedded cord length arepermitted.6.2 If more than one third of the cords break at the 12.5-mmembedment, it may be advisable to reduce the embedment byuse of a suitable mold insert.6.3 Testing Machine:6.3.1 A constant-rate-of-extensio
20、n (CRE) type tensile test-ing machine conforming to the requirements of SpecificationD76 for textiles shall be used for measuring the pull-out force.The rate of travel of the power actuated grip shall be 50mm/min. Other rates of travel up to 150 mm/min may be usedas agreed upon by the purchaser and
21、the supplier.6.3.2 The top grip shall apply force to the cord duringtesting that is normal to the face of the test block.6.3.3 The bottom grip (Fig. 4) shall be a special holder madefor the vulcanized test block.6.4 PressA curing press, large enough to take the mold,and capable of a minimum pressure
22、 of 3.5 MPa over the totalarea of the mold plate. Electrical or steam heat for the top andbottom platens shall be provided, of sufficient capacity formaintaining the mold components at the temperatures requiredfor the rubber compound being used.6.5 Desiccator.7. Materials and Reagents7.1 SolventA so
23、lvent may be used to freshen the surfaceof the rubber when necessary, provided such solvent treatmentdoes not affect adhesion of the cord in the vulcanized block. Asuitable solvent has been found to be a special lead-freegasoline (normal heptane), with a distillation range from 40 to141C and a maxim
24、um recovery of 97 %.7.2 Rubber CompoundThe rubber compound shall befurnished by the user of the cord, together with pertinentinformation of the temperature and time for the vulcanizationof the particular rubber, as well as the conditioning periodbetween vulcanization and testing. Because the perform
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