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GB/T 2942-2009: Rubber, vulcanized -- Determination of static adhesion to textile cord -- H-pull test
Status: Valid GB/T 2942: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 2942-2009 | English | 329 |
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Rubber, vulcanized -- Determination of static adhesion to textile cord -- H-pull test
| Valid |
GB/T 2942-2009
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| GB/T 2942-1991 | English | 239 |
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Rubber, vulcanized--Determination of static adhesion to textile cord ch-pull test
| Obsolete |
GB/T 2942-1991
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PDF similar to GB/T 2942-2009
Basic data | Standard ID | GB/T 2942-2009 (GB/T2942-2009) | | Description (Translated English) | Rubber, vulcanized -- Determination of static adhesion to textile cord -- H-pull test | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G40 | | Classification of International Standard | 83.060 | | Word Count Estimation | 14,195 | | Date of Issue | 2009-06-15 | | Date of Implementation | 2010-02-01 | | Older Standard (superseded by this standard) | GB/T 2942-1991 | | Quoted Standard | GB/T 2941; ISO 5893 | | Adopted Standard | ISO 4647-1982, MOD | | Regulation (derived from) | National Standard Approval Announcement 2009 No.8 (Total No.148) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for measuring tire cord fabric and vulcanized rubber static adhesion strength. This standard applies to a cord made ??of natural fibers or synthetic fibers. | GB/T 2942-2009: Rubber, vulcanized -- Determination of static adhesion to textile cord -- H-pull test
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Rubber, vulcanized.Determination of static adhension to textile cord.H-pull test
ICS 83.060
G40
National Standards of People's Republic of China
Replacing GB/T 2942-1991
Determination of vulcanized rubber and fiber cord static adhesion strength
H extraction method
(ISO 4647. 1982, MOD)
Posted 2009-06-15
2010-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This revised standard adopts ISO 4647. 1982 "Rubber, vulcanized fiber cord static adhesion strength measurement H extraction method" (English
Chinese Version).
This standard replaces GB/T 2942-1991 "vulcanized rubber and fabric adhesive strength measurement H extraction method."
This standard and ISO 4647. 1982 as compared to the main technical differences and the reasons are as follows.
--- In Chapter 2 normative references added "ISO 5893 Rubber & Plastics stretching, flexing and compression testing machine (constant speed) TECHNOLOGY
Art performance. "Make test equipment conforming to the standard technical requirements.
5.1 --- in the mold, the "strip specimen having a thickness of Y/2, and into the spacing is Z, a width of the two cavities C vulcanization system
Preparation. "To" strip specimen having a thickness of Y/2, and into the spacing of Z, X a width of preparing two mold cavities vulcanization. "so that
And mold the figure marked consistent.
--- In 5.2 "by tension cords at one end of each cord hanging 50g ± 1g of weight obtained and placed in the mold level
Remove the front panel press vulcanization vulcanizing machine. "To" cord tension can be suspended by a certain quality in the end of each cord weight
obtain. Weight can be designed as a hook or a clamp can clamp the cords, typically 50g ± 1g. The mold into flat
The vulcanizing press vulcanization, vulcanization is removed after the end of the hammer. "Avoid tension device is removed prior to press vulcanization shrinkage caused by cord
Deviation and bending.
--- The 5.3 "5.3 test equipment, test equipment comply with verification requirements to provide accurate force value during the test, the holder
Should a predetermined constant speed of 100mm/min ± 10mm/min Mobile. "To" instrument calibration to meet the ISO 5893
begging. Measuring force value specified in compliance with ISO 5893 Class 2 accuracy. The holder should be at a constant predetermined speed 100mm/min ±
10mm/min Mobile. "So that the test instrument meets the current technical requirements.
--- Delete a sample holder 5 shown in Figure 5.4. Not because the domestic use of this sample holder.
--- 6.1 sample size, considering that the majority of domestic use cords embedded width of 10.0mm, 10.0mm in thickness or width
Is 5mm, thickness 3.2mm the test specimens, the "standard sample should be made a length of the cord is buried in the width
6.4mm, 3.2mm thickness of the strip is made. "Changed to" by the specimen should be buried in a length of cord width
6.4mm, 3.2mm thickness of the strip is made. It can also be used as the cord was embedded in a width 10.0mm, thickness
Or 10.0mm width is 5mm, thickness of 3.2mm rubber compound. However, samples with different overhang length of the specimens
The experimental results are not comparable. "
--- Remove the ISO 4647. 1982 6.2.4 The provisions on the use of prefabricated die; because in the curing process, the domestic rarely used
Prefabricated modules.
--- "The mold was placed in preheated to a curing temperature vulcanizing machine, remove the tension on the cord from the device. Adjust the pressure so that the mold table
Face pressure to a minimum pressure of 3.5MPa vulcanization. Curing the predetermined time immediately after the samples were removed from the mold, and
Cooled at room temperature. "To" mold into preheated to a curing temperature vulcanizing machine, the regulatory pressure on the mold surface
The minimum pressure of 3.5MPa vulcanization. Cure to the specified time, the tension device is removed from the cord immediately from the mold
The samples were removed and cooled at room temperature. "And 5.2 consistent.
--- Added "samples after curing there should be no lack of glue, bubbles, flattening cord injury and other defects." Avoid defects affect the results of the sample
test.
--- The results are shown in Chapter 11 to add "and the arithmetic mean of the results, accurate to one decimal place."
--- Chapter 12 Test report removed "clamp type", and 5.4 consistent.
--- Added Appendix A, this standard and ISO 4647. 1982 reg number table.
--- Original Appendix A to B "to prepare a silicone rubber cover gutter" Appendix.
The main difference compared with the standard GB/T 2942-1991 as follows.
--- Modify the standard name;
--- Increasing the foreword;
--- Chapter 2 normative references deleted GB 527 and GB 6038, an increase of ISO 5893 (see Chapter 2);
--- Adds a schematic view of the mold and Figures 2 and 3 shown in Figure 3 two sample preparation methods (see 5.1);
--- Increased holder schematic Note (1991 edition Figure 2; Figure 4 edition);
--- The "For provide 0.49 ± 0.01N cord tension device, in the preparation of samples in one end of each cord hanging 50g ±
1g of weight reached. And then hammer to remove the pre-vulcanization in the mold placed flat vulcanizing machine. "To" tension cords
By the end of each cord hanging hammer to get a certain quality. Weight can be designed as a hook or can be clamped
Cord clamp, typically 50g ± 1g. The mold into the pressurized vulcanizing press vulcanization, vulcanization is removed after the end of the hammer. "
(See 5.2);
--- The "standard sample should be made a length of cord buried in a width of 6.4mm, 3.2mm thickness of the strip is made." More
The words "by the specimen should be buried in a length of cord width of 6.4mm, 3.2mm thickness of the strip is made may also be
Selection cord was embedded in a width of 10.0mm, 10.0mm in thickness or a width of 5mm, thickness of 3.2mm rubber compound.
However, the test results of samples with different overhang length obtained are not comparable. "(See 6.1);
--- Deleted "When the trial has not yet occurred cords out of the first break and the sample void" provisions (1991 version 11.2);
--- Added Appendix A.
Appendix A of this standard and Appendix B is an informative annex.
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standards Commission Oak Common test methods Technical Committee (SAC/TC35/SC2) centralized.
This standard was drafted. Guizhou Tyre Co., Ltd., Beijing Rubber Industry Research and Design Institute.
The main drafters of this standard. Feng Ping, Zhang Yan.
This standard replaces the standards previously issued as follows.
--- GB 2942-1982, GB/T 2942-1991.
Determination of vulcanized rubber and fiber cord static adhesion strength
H extraction method
Warning --- personnel should use this standard regular laboratory work experience. This standard does not point out all possible security asked
question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
This standard specifies the method for measuring tire cord fabric and vulcanized rubber static adhesion strength. This standard applies to natural fibers or person
Cords made fibers.
Adhesive strength measured by this method is affected by historical conditions and cords rubber manufacturing process to a large extent, the present method
Data provided can be used as the basis for judging the quality of the materials used.
This standard is also applicable to other vulcanized rubber products using a linear density of no more than 800mg/m (tex) of the cord is similar.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revised edition are not suitable for this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 2941 rubber physical test method for preparing and conditioning General Procedure (GB/T 2941-2006, ISO 23529.2004,
IDT)
ISO 5893 Rubber & Plastics stretching, flexing and compression testing machine (constant speed) technical performance
Principle 3
The single cord out of the force required from a vulcanized rubber block evaluated by measuring the adhesive properties of rubber and fiber cord between
This force is applied along the longitudinal axis of the cord, embedded in the rubber cord length is fixed (see Fig. 1).
Figure 1 Sample
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