GB/T 35674-2017General technical requirements for electromagnetic shielding all-round conductive foam (English PDF)
电磁屏蔽用全方位导电海绵通用技术要求
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 29, 2017
Implementation date
July 1, 2018
Scope
GB/T 35674-2017 is the English-translated version of 电磁屏蔽用全方位导电海绵通用技术要求.
GB/T 35674-2017 is the Chinese standard "General technical requirements for electromagnetic shielding all-round conductive foam".
Its scope clause reads: This standard specifies the terms and definitions of all-round conductive sponge electromagnetic shielding materials, technical requirements, test methods, inspection rules and signs, Packaging, transportation and storage.
This standard applies to all-round conductive sponge electromagnetic shielding materials. Its clauses include terms and definitions; technical requirements.
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Document preview — GB/T 35674-2017
National Standard of the People's Republic of China
- ICS
- 17.220.99
- Classification
- K 04
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 technical requirements
1 Scope
This standard specifies the terms and definitions of all-round conductive sponge electromagnetic shielding materials, technical requirements, test methods, inspection rules and signs,
Packaging, transportation and storage.
This standard applies to all-round conductive sponge electromagnetic shielding materials.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 191 Packaging - Pictorial signs
GB/T 6432 Determination of linear dimensions of foam and rubber
GB/T 26125 Determination of six restricted substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers) of electrical and electronic products
GB/T 26667 electromagnetic shielding materials terminology
General technical requirements for electromagnetic shielding fabrics for industry GB/T 30139-2013
Measurement method of shielding effectiveness of planar electromagnetic shielding materials GB/T 30142-2013
3 Terms and definitions
GB/T 26667 defined and the following terms and definitions apply to this document.
3.1 Omni-conductive sponge al-roundconductivefoam
Physical or chemical methods such as the average can be made of conductive conductive sponge sponge.
3.2 Z axis resistance
The resistance between two electrodes of a specific area is placed on two opposing surfaces of the material.
4 technical requirements
4.1 Classification
All-round conductive sponge can be divided by thickness.
a) Slim type (thickness < 1.0mm);
b) Thin (1.0mm <= thickness < 3.0mm);
c) Thick (3.0mm <= thickness < 5.0mm);
d) thick type (5.0mm <= thickness <= 10.0mm).
......
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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