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 (English Version)
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 (ρ = 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).
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 (English Version)
Standard No.
GB/T 22638.10-2016
Status
valid
Language
English
File Format
PDF
Word Count
3500 words
Price(USD)
100.0
Implemented on
2017-11-1
Delivery
via email in 1 business day
Detail of GB/T 22638.10-2016
Standard No.
GB/T 22638.10-2016
English Name
Test methods for aluminium and aluminium alloy foils―Part 10:Determination of mass per unit area(surface density) of coatings
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 (ρ = 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).
