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ASTM D4776-04

(Test Method)

Standard Test Method for Adhesion of Tire Cords and Other Reinforcing Cords to Rubber Compounds by H-Test Procedure

Standard Test Method for Adhesion of Tire Cords and Other Reinforcing Cords to Rubber Compounds by H-Test Procedure

SCOPE
1.1 This test method covers the measurement of adhesion of reinforcing cords that are bonded to rubber compounds. This test method is applicable to textile cord structures from both natural and manmade fibers, other than steel. For adhesion testing of steel tire cords, refer to Test Method D 2229.
1.2 This test method is primarily used to evaluate tire cords, using a suitable tire cord adhesive and a suitable rubber compound. This test method is also used to evaluate (1) tire cord adhesives, and (2) the process of adhesive reaction on the cord using one consistent form of tire cord and one consistent rubber compound. This test method may be used to evaluate cords in industrial hose and belting products and other cord reinforced rubber products.
1.3 This test method is written in SI units. The inch-pound units which are provided in this test method are not necessarily exact equivalents of the SI units. Either system may be used in this test method.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Sep-2004
ICS
83.160.01 - Tyres in general
Technical Committee
D13 - Textiles
Drafting Committee
D13.19 - Industrial Fibers and Metallic Reinforcements
Current Stage
Ref Project

Relations

Replaces
ASTM D4776-02 - Standard Test Method for Adhesion of Tire Cords and Other Reinforcing Cords to Rubber Compounds by H-Test Procedure
Effective Date
01-Oct-2004
Replaced By
ASTM D4776-04e1 - Standard Test Method for Adhesion of Tire Cords and Other Reinforcing Cords to Rubber Compounds by H-Test Procedure
Effective Date
01-Oct-2004

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ASTM D4776-04 - Standard Test Method for Adhesion of Tire Cords and Other Reinforcing Cords to Rubber Compounds by H-Test ProcedureASTM D4776-04 - Standard Test Method for Adhesion of Tire Cords and Other Reinforcing Cords to Rubber Compounds by H-Test Procedure
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ASTM D4776-04 - Standard Test Method for Adhesion of Tire Cords and Other Reinforcing Cords to Rubber Compounds by H-Test Procedure
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D4776–04
Standard Test Method for
Adhesion of Tire Cords and Other Reinforcing Cords to
1
Rubber Compounds by H-Test Procedure
This standard is issued under the fixed designation D 4776; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This test method covers the measurement of adhesion of 3.1 Definitions:
reinforcing cords that are bonded to rubber compounds. This 3.1.1 For defintions of terms relating to tire cord, bead wire,
test method is applicable to textile cord structures from both hose wire, and tire cord fabrics, refer to Terminology D 6477.
natural and manmade fibers, other than steel. For adhesion 3.1.1.1 The following terms are relevant to this standard:
testing of steel tire cords, refer to Test Method D 2229. adhesion, adhesion, in tire fabrics, cord, curing, H-test adhe-
1.2 This test method is primarily used to evaluate tire cords, sion, industrial yarn, reinforcing cord, rubber, rubber com-
using a suitable tire cord adhesive and a suitable rubber pound, as used in the manufacture of rubber articles, vulcani-
compound. This test method is also used to evaluate (1) tire zation.
cord adhesives, and (2) the process of adhesive reaction on the 3.1.2 For definitions of other terms relating to rubber, refer
cord using one consistent form of tire cord and one consistent to Terminology D 1566.
rubber compound. This test method may be used to evaluate 3.1.3 For definitions of other textile terms related to textiles,
cords in industrial hose and belting products and other cord refer to Terminology D 123.
reinforced rubber products.
4. Summary of Test Method
1.3 This test method is written in SI units. The inch-pound
4.1 A cord specimen is sandwiched between two layers of
units which are provided in this test method are not necessarily
exact equivalents of the SI units. Either system may be used in rubber compound test stock in a form resembling an “H,”
placed in a heated mold, and cured at a specified temperature
this test method.
1.4 This standard does not purport to address all of the and pressure. The test specimen sandwich is then cut to create
an H-test specimen consisting of a single cord with each end
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- embedded in the center of a tab end of the rubber test block
(Fig. 1). The test specimen is placed in the grips of the tensile
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. tester, and then the grips are separated. The maximum force
obtained is the H-test adhesion force.
2. Referenced Documents
2
5. Significance and Use
2.1 ASTM Standards:
5.1 Test Method D 4776 for the determination of the H-test
D 76 SpecificationforTensileTestingMachinesforTextiles
D 123 Terminology Relating to Textiles adhesion of reinforcing cords to rubber compounds may be
D 1566 Terminology Relating to Rubber used for the acceptance testing of commercial shipments of
reinforcing cords but caution is advised since information
D 2229 Test Method for Adhesion Between Steel Tire
Cords and Rubber about between-laboratory precision is incomplete. Compara-
tive tests as directed in 5.1.1 may be advisable.
D 4393 TestMethodforStrapPeelAdhesionofReinforcing
Cords or Fabrics to Rubber Compounds 5.1.1 In cases of dispute arising from the differences in
reported test results when using Test Method D 4776 for
D 6477 Terminology Relating to Tire Cords, Bead Wire,
Hose Reinforcing Wire, and Fabrics acceptance testing of commercial shipments, the purchaser and
the supplier should conduct comparative tests to determine if
there is statistical bias between their laboratories. Competent
1
This test method is under the jurisdiction ofASTM Committee D13 onTextiles
statistical assistance is recommended for the investigation of
and is the direct responsibility of Subcommittee D13.19 on Tire Cord and Fabrics.
bias.As a minimum, the two parties should take a group of test
Current edition approved Oct. 1, 2004. Published October 2004. Originally
approved in 1988. Last previous edition approved in 2002 as D 4776 – 02.
specimens which are as homogeneous as possible and which
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
are from a lot of material of the type in question. The test
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Dri
...

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