GB/T 22638.10-2016Test methods for aluminium and aluminium alloy foils - Part 10: Determination of mass per unit area (surface density) of coatings (English PDF)
铝箔试验方法 第10部分：涂层表面密度的测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 30, 2016
Implementation date
November 1, 2017
Scope
GB/T 22638.10-2016 is the English-translated version of 铝箔试验方法 第10部分：涂层表面密度的测定.
GB/T 22638.10-2016 is the Chinese standard "Test methods for aluminium and aluminium alloy foils - Part 10: Determination of mass per unit area (surface density) of coatings".
Its scope clause reads: This part of GB/T 22638 specifies the determination method for surface density of aluminum and aluminium alloy foil coatings. This part is applicable to the determination for surface density of coated aluminium and aluminium alloy foils.
The high-temperature baking method specified in this part is applicable to the arbitration determination for surface density of the coating. Its clauses include principle; reagents; apparatus; specimens; concentrated sulfuric acid method.
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Document preview — GB/T 22638.10-2016
National Standard of the People's Republic of China
- ICS
- 77.040.01
- Classification
- H 20
- Replacing
- GB/T 22638.10-2008
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword i
- 1 Scope
- 2 Normative references
- 3 Principle
- 4 Reagents
- 5 Apparatus
- 6 Specimens
- 7 Concentrated sulfuric acid method
- 8 High-temperature baking method
- 9 Test report
1 Scope
This part of GB/T 22638 specifies the determination method for surface density of aluminum and aluminium alloy foil coatings.
This part is applicable to the determination for surface density of coated aluminium and aluminium alloy foils.
The high-temperature baking method specified in this part is applicable to the arbitration determination for surface density of the coating.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
3 Principle
Put the specimen with known area and mass into the concentrated sulfuric acid with specified concentration (applicable to organic coating) or bake at high temperature in muffle furnace (applicable to organic coating, inorganic coating and mixed coating). After the coating is completely removed, weigh the mass of the specimen and calculate the mass loss per unit area of the specimen, which is the surface density of the coating.
4 Reagents
Concentrated sulfuric acid (rho = 1.84g/mL).
5 Apparatus
5.1 Analytical balance
with a sensitivity of 0.1 mg.
5.2
Muffle furnace, the temperature can be controlled at 550°C ± 5°C.
5.3
Oven, the temperature can be controlled at 100°C ± 1°C.
5.4
Beaker, with a capacity of 1,000 mL.
5.5
Sampler, with quantitative standard and a sample area of 0.01m2.
6 Specimens
Take a circular specimen with an area of 0.01m2 with a sampler (5.5), and the area deviation of the specimen shall not be greater than ± 0.35 cm2.
7 Concentrated sulfuric acid method
7.1
Place the specimen in an oven (5.3) at 100°C ± 1°C to dry for 5 min, then take it out with tweezers, place it in a drying dish for full cooling, and weigh the specimen mass m (accurate to 0.1 mg).
7.2
Immerse the specimen in a beaker (5.4) containing concentrated sulfuric acid (4.1) for 10 min. Rinse the specimen with tap water quickly after taking out with tweezers, and wipe the specimen surface with gauze. Place the specimen in an oven (5.3) at 100°C ± 1°C to dry for 5 min, then take it out with tweezers, place it in a drying dish for full cooling, and weigh the specimen mass (accurate to 0.1 mg).
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 22638.10
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 22638.10-2016 | Test methods for aluminium and aluminium alloy foils - Part 10: Determination of mass per unit area (surface density) of coatings | current edition | Current |
| GB/T 22638.10-2008 | Test methods for aluminium and aluminium alloy foils - Part 10: Determination of mass per unit area (surface density) of coatings | previous edition | Superseded |
This page sells the current edition, GB/T 22638.10-2016. Earlier editions are listed for reference only.
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Related Standards
GB/T 22638.1-2016 — Test methods for aluminium and aluminium alloy foils - Part 1: Determination of thickness
GB/T 22638.11-2023 — Test methods for aluminum and aluminum alloy foils—Part 11: Determination of mechanical properties
GB/T 22638.2-2016 — Test methods for aluminium and aluminium alloy foils - Part 2: Determination of pinhole
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