GB/T 39142.1-2020Specification of plastic-steel bilayer self-lubricating materials—Part 1: Running-in layer with modified PTFE tape (English PDF)
塑料－钢背二层粘接复合自润滑板材技术条件 第1部分：带改性聚四氟乙烯（PTFE）减摩层的板材
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 11, 2020
Implementation date
May 1, 2021
Scope
GB/T 39142.1-2020 is the English-translated version of 塑料－钢背二层粘接复合自润滑板材技术条件 第1部分：带改性聚四氟乙烯（PTFE）减摩层的板材.
GB/T 39142.1-2020 is the Chinese standard "Specification of plastic-steel bilayer self-lubricating materials—Part 1: Running-in layer with modified PTFE tape".
Its scope clause reads: This part of GB/T 39142 stipulates that the surface plastic layer is modified polytetrafluoroethylene plastic-steel back two-layer bonding composite self-lubricating sheet The material structure characteristics, technical requirements and test methods.
This section applies to the self-lubricating board (hereinafter referred to as the board) made by the plastic layer of modified polytetrafluoroethylene and steel back bonding. Its clauses include structural features; technical requirements.
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Document preview — GB/T 39142.1-2020
National Standard of the People's Republic of China
- ICS
- 21.100.10
- Classification
- J 12
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Structural features
- 4 Technical requirements
1 Scope
This part of GB/T 39142 stipulates that the surface plastic layer is modified polytetrafluoroethylene plastic-steel back two-layer bonding composite self-lubricating sheet
The material structure characteristics, technical requirements and test methods.
This section applies to the self-lubricating board (hereinafter referred to as the board) made by the plastic layer of modified polytetrafluoroethylene and steel back bonding.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 1041 Determination of plastic compression properties
GB/T 3960 Plastic sliding friction and wear test method
GB/T 9286 Cross-cut test of paint and varnish film
3 Structural features
The board is composed of a surface plastic layer and a steel back layer by bonding. The surface plastic layer adopts modified polytetrafluoroethylene, and its thickness is
0.1mm~1.0mm. The steel back layer is made of high-quality carbon structural steel, and the carbon content is generally not more than 0.08%. The surface of the steel back can be galvanized or tinned to prevent corrosion.
4 Technical requirements
4.1 Bonding force between layers
According to the method specified in 5.1, the peeling condition of the board meets the 0-level standard.
4.2 Chemical stability
The plate is tested for chemical stability according to the requirements of 5.2, and the weight change rate meets the requirements of Table 1.
4.3 Compression set
The plate is tested according to the test conditions specified in 5.3, and the thickness reduction rate of the sample meets the requirements of Table 2.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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