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GB/T 7122-2025: Determination of peel resistance of high-strength adhesive bonds - Floating-roller method
Status: Valid GB/T 7122: Evolution and historical versions
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| GB/T 7122-2025 | English | 219 |
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Determination of peel resistance of high-strength adhesive bonds - Floating-roller method
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GB/T 7122-2025
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| GB/T 7122-1996 | English | 110 |
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Adhesives. Determination of peel resistance of high-strength adhesive bonds. Floating roller method
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GB/T 7122-1996
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| GB/T 7122-1986 | English | RFQ |
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Adhesives--Determination of peel resistance of high strength adhesive bonds--Floating roller method
| Obsolete |
GB/T 7122-1986
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Basic data | Standard ID | GB/T 7122-2025 (GB/T7122-2025) | | Description (Translated English) | Determination of peel resistance of high-strength adhesive bonds - Floating-roller method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G38 | | Classification of International Standard | 83.180 | | Word Count Estimation | 10,198 | | Date of Issue | 2025-08-29 | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 7122-1996 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | GB/T 7122-2025: Determination of peel resistance of high-strength adhesive bonds - Floating-roller method
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT7122-2025
ICS 83.180
CCSG38
National Standard of the People's Republic of China
Replaces GB/T 7122-1996
High-strength adhesives - Determination of peel strength - Floating roller method
Floating-roler method
Released on August 29, 2025
Implementation on March 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 7122-1996 "High-strength adhesives - Determination of peel strength - Floating roller method" and is consistent with GB/T 7122-1996.
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
--- Changed "Scope" (see Chapter 1, Chapter 1 of the.1996 edition);
--- Added normative references to GB/T 2943 (see Chapter 3, Chapter 3 of the.1996 edition);
--- Added "Principle" (see Chapter 4);
--- Changed the requirements for equipment accuracy and roller diameter in "device" (see 5.1, 5.2, 4.1, 4.2 of the.1996 edition);
--- Added applicable standards for surface treatment of "test piece", measurement of adhesive layer thickness, aging conditions before test of test piece and test piece size measurement
In accordance with the requirements of the quantity, the preferred width dimension of the test piece has been changed (see 6.2, 6.4, 6.7, 6.8, 6.9, and 5.2 and 5.4 of the.1996 edition);
--- Added the state adjustment of the specimen in "State adjustment and test environment" (see Chapter 7);
--- Added the method of expressing the type of failure in the "test steps" (see 8.3);
--- Added method d in "Test result processing" (see Chapter 9);
--- Added aging conditions in the "Test Report" and changed the description of the specimen failure type (see Chapter 10, Chapter 9 of the.1996 edition).
This document is modified to adopt ISO 4578.1997 "Adhesives - High-strength adhesives - Determination of peel strength - Floating roller method".
This document has some structural adjustments compared to ISO 4578.1997.
See Appendix A.
This document has many technical differences compared with ISO 4578.1997.
A table of these technical differences and their causes is given in Appendix B.
The following editorial changes have been made to this document.
--- The name of the standard is changed to "Determination of peel strength of high-strength adhesives - Floating roller method";
--- Changed the equipment name in the tensile test device to the commonly used domestic name.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Adhesives (SAC/TC185).
This document was drafted by. Shanghai Rubber Products Research Institute Co., Ltd., Shanghai Jianke Inspection Co., Ltd., Zhejiang Jianyang Polymer Technology Co., Ltd.
Co., Ltd., Zhengzhou Silande New Material Technology Co., Ltd., Jiangxi Yirui New Material Technology Co., Ltd., Shanghai Jianke Deepwater Port Inspection Co., Ltd.
Shanghai Pudong Architectural Design and Research Institute Co., Ltd., Guangdong Baiyun Technology Co., Ltd., Heilongjiang Academy of Sciences Petrochemical Research Institute, Kangda
New Materials (Group) Co., Ltd., China Academy of Building Research Co., Ltd., Guangdong Kejian Instrument Co., Ltd., Jinan North Taihe New
Materials Co., Ltd., Shanghai University of Engineering Science.
The main drafters of this document are. Shen Yan, Gao Jue, Yang Zhigang, Bei Wenli, Yang Zhongkui, Tan Jianchun, Li Jingcheng, Huang Binhui, Song Xueyan, Niu Rong,
Qi Shoushan, Jiang Liping, Li Yunhua, Zeng Bing, Su Ping, Li Haizhu, and Chen Chen.
The previous versions of this document and the documents it replaces are as follows.
--- First issued as GB/T 7122-1986 in 1986, first revised in.1996;
---This is the second revision.
High-strength adhesives - Determination of peel strength - Floating roller method
1 Scope
This document describes the method for determining the peel strength of high-strength adhesive joints using the floating roller method.
This document is applicable to the determination of the peel strength of bonds between rigid adherends and flexible adherends.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 2918 Standard environment for conditioning and testing of plastic specimens (GB/T 2918-2018, ISO 291.2008, MOD)
GB/T 2943 Adhesive Terminology
GB/T 16997 Method for indicating the main types of failure of adhesives (GB/T 16997-2025, ISO 10365.2022, IDT)
GB/T 21526 Guidelines for surface preparation of metals and plastics before bonding with structural adhesives (GB/T 21526-2025, ISO 17212.
2012, MOD)
GB/T 35489 Guide to Aging Conditions for Adhesives (GB/T 35489-2017, ISO 9142.2003, MOD)
3 Terms and Definitions
The terms and definitions defined in GB/T 2943 and the following apply to this document.
3.1
Peel resistance
Under specified test conditions, the average force required per unit sample width to gradually separate two adherends along the glue line.
4 Principles
Use the specified test device to peel the flexible adherend from the rigid adherend and measure the force required to peel the flexible adherend.
5 Devices
5.1 Tensile test apparatus
The tensile test device should be equipped with an effective measuring system and an indication recording system, with a force value accurate to ±1%.
The calibrated chuck should be able to firmly clamp the flexible adherend 25mm from the outer end. The chuck and the peel test fixture should be able to
The specimens are simultaneously moved and aligned so that the flexible adherend in the specimen is aligned with the direction of the pulling force applied through the center line of the peeling fixture.
All devices should be calibrated regularly. It is recommended to use a non-inertia tensile test device for this test.
5.2 Peel test fixture
The peel test fixture supporting the specimen is shown in Figure 1.The upper end of the fixture is connected to the chuck on the testing machine.
The roller diameter is (25.0±0.5) mm. Both ends of the roller should be equipped with bearings and be able to rotate freely.
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