GB/T 11211-2009Rubber, vulcanized or thermoplastic -- Determination of adhesion to metal -- Two-plate method (English PDF)

Foreword

This standard is equivalent to ISO 814:2007 "Vulcanized rubber or thermoplastic rubber --- Determination of the bond strength with metal --- two-board method" (English version).

This standard replaces GB/T 11211-1989 "Determination of the adhesion strength of vulcanized rubber and metal."

This standard is equivalent to translation ISO 814:2007.

For ease of use, this standard makes the following editorial changes.

a) the words "this International Standard" are replaced by the words "this standard";

b) Replace the comma "," as a decimal point with a decimal point ".";

c) Remove the preface to international standards.

The main changes in this standard compared with GB/T 11211-1989 are as follows.

---Modified the name of the standard;

--- The object of measurement is expanded from vulcanized rubber to vulcanized rubber and thermoplastic rubber;

--- Increase the typical positioning device fixture diagram (4.2 of this edition);

--- Sample shape and size change (5.1 of the 1989 edition; 5.1 of this edition);

--- The number of samples changed from "not less than 5" to "at least 3" (5.1.4 of the 1989 edition; 5.3 of this edition);

---The test speed was changed from the original "50±5mm/min" to "25mm/min±5mm/min" (Chapter 7 of the 1989 edition; 6.2 of this edition);

--- The test result is changed from "arithmetic mean, highest value, lowest value", "destruction type and quantity" to "test result of each sample", "Type and percentage of damage" (Chapter 9 of the 1989 edition; Chapter 8 of this edition).

1 Scope

This standard specifies the test method for determining the bond strength between rubber and metal bonded between two parallel metal sheets.

The method is applicable to samples prepared under the conditions of standard laboratories, and the test results can also be the development and manufacturing methods of rubber compounds. The study provides experimental data.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard.

GB/T 2941 Rubber physical test method General procedure for preparation and adjustment of specimens (GB/T 2941-2006, ISO 23529:2004, IDT)

ISO 5893 Rubber and plastic testing equipment - tensile, bending and compression type (constant speed drive) - description

3 Principle

This method measures the force required to cause a bond failure in a standard size specimen. The sample is adhered to the rubber layer by two parallel metal sheets in combination; the direction of the force is 90° to the bonding surface.

4 Test equipment

5 Sample

6 Test steps

6.1 Mount the specimen on the positioning device of the testing machine, and pay great attention to adjust the specimen to center it so that the force is evenly distributed on the entire cross section.

6.2 Apply tension to the clamp so that the clamp moves at a constant speed of 25mm/min±5mm/min until the specimen is destroyed. Maximum force value.

7 Results are expressed

8 Test report

The test report shall include at least the following.

a) the number of this standard;

b) Detailed description of the test piece.

1) time and temperature of vulcanization;

2) the date of vulcanization;

3) The metal used is different from the specified steel.

c) Detailed description of the test.

1) The time and temperature at which the sample is adjusted;

2) test temperature;

3) Record all abnormal features in the measurement;

4) the number of test samples;

5) All operations not covered by this standard and with reference to this standard, and all operations deemed to be optional.

d) Test results.

1) Indicate the test results for each sample as required by 7.1;

2) Describe the type of failure as specified in 7.2, indicating the percentage of each type of failure.

e) Test date. […]