GB/T 22638.4-2008 English PDF (GB/T22638.4-2008)

GB/T 22638.4-2008: Test methods for aluminium and aluminium alloy foils -- Part 4: Determination of surface wetting tension
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GB 22638.4-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.040.01
H 20
Test methods for aluminium and aluminium alloy foils
– Part 4. Determination of surface wetting tension
ISSUED ON. DECEMBER 29, 2008
IMPLEMENTED ON. NOVEMBER 1, 2009
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Method principle ... 4 
3 Reagents and materials ... 4 
4 Preparation of test solutions ... 4 
5 Test conditions ... 5 
6 Determination ... 5 
7 Result expression ... 6 
8 Test report ... 6 
Foreword
GB/T 22638 "Test method for aluminium and aluminium alloy foils" is divided into 10
parts.
-- Part 1. Determination of thickness by gravimetric method;
-- Part 2. Determination of porosity;
-- Part 3. Determination of stickiness;
-- Part 4. Determination of surface wetting tension;
-- Part 5. Determination of wettability by brushing;
-- Part 6. Determination of direct current resistance;
-- Part 7. Determination of heat seal strength;
-- Part 8. Determination of texture;
-- Part 9. Determination of hydrophilic property;
-- Part 10. Determination of mass per unit area (surface density) of coatings.
This is part 4 of GB/T22638. This part is formulated by reference to EN 546.4-1997
"Aluminum and aluminum alloy foils - Part 4. Special performance requirements”.
This part was proposed by the China Nonferrous Metals Industry Association.
This part shall be under the jurisdiction of National Nonferrous Metals Standardization
Technical Committee.
Main drafting organization of this part. North China Aluminium Co., Ltd.
Participating drafting organization of this part. China Nonferrous Metals Industry
Standard Metrology and Quality Institute, Shanghai Enyuan Industrial Co., Ltd, and
Xiamen Xiashun Aluminium Foil Co., Ltd.
The main drafters of this part. Cao Jianfeng, Ge Lixin, Wang Shufen, Guang
Lianzhong, Guo Yiqing, Liang Mingxia, Zhang Shenyang, Bo Changhai, Jin Guofu.
Test methods for aluminium and aluminium alloy foils
– Part 4. Determination of surface wetting tension
1 Scope
This part of GB/T 22638 specifies the method for determination of aluminum foil’s
surface wetting tension.
This part applies to the determination of aluminum foil’s surface wetting tension.
2 Method principle
This method is based on the principle – on a fixed surface, BRUSH-TRY different
solutions, of which the wettability is different; CHOOSE different solutions, so as to
determine the aluminum foil’s surface wetting tension.
3 Reagents and materials
3.1 Formamide, analytically pure
3.2 Glycol ether, analytically pure
3.3 Distilled water
4 Preparation of test solutions
TAKE appropriate amount of formamide (3.1), glycol ether (3.2) and distilled water
(3.3); PREPARE the test solution according to Table 1; PUT into the test bottle for
later use.
Table 1
Serial number of test solution Test solution
1 Glycol ether
2 Formamide - glycol ether mixed solution (2.3 + 97.5)
3 Formamide - glycol ether mixed solution (26.5 + 73.5)
4 Formamide - glycol ether mixed solution (10.5 + 89.5)
5 Formamide - glycol ether mixed solution (19.0 + 81.0)
6 Formamide - glycol ether mixed solution (26.5 + 73.5)
7 Formamide - glycol ether mixed solution (35.0 + 65.0)
8 Formamide - glycol ether mixed solution (42.5 + 57.5)
9 Formamide - glycol ether mixed solution (48.5 + 51.5)
GB 22638.4-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.040.01
H 20
Test methods for aluminium and aluminium alloy foils
– Part 4. Determination of surface wetting tension
ISSUED ON. DECEMBER 29, 2008
IMPLEMENTED ON. NOVEMBER 1, 2009
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Method principle ... 4 
3 Reagents and materials ... 4 
4 Preparation of test solutions ... 4 
5 Test conditions ... 5 
6 Determination ... 5 
7 Result expression ... 6 
8 Test report ... 6 
Foreword
GB/T 22638 "Test method for aluminium and aluminium alloy foils" is divided into 10
parts.
-- Part 1. Determination of thickness by gravimetric method;
-- Part 2. Determination of porosity;
-- Part 3. Determination of stickiness;
-- Part 4. Determination of surface wetting tension;
-- Part 5. Determination of wettability by brushing;
-- Part 6. Determination of direct current resistance;
-- Part 7. Determination of heat seal strength;
-- Part 8. Determination of texture;
-- Part 9. Determination of hydrophilic property;
-- Part 10. Determination of mass per unit area (surface density) of coatings.
This is part 4 of GB/T22638. This part is formulated by reference to EN 546.4-1997
"Aluminum and aluminum alloy foils - Part 4. Special performance requirements”.
This part was proposed by the China Nonferrous Metals Industry Association.
This part shall be under the jurisdiction of National Nonferrous Metals Standardization
Technical Committee.
Main drafting organization of this part. North China Aluminium Co., Ltd.
Participating drafting organization of this part. China Nonferrous Metals Industry
Standard Metrology and Quality Institute, Shanghai Enyuan Industrial Co., Ltd, and
Xiamen Xiashun Aluminium Foil Co., Ltd.
The main drafters of this part. Cao Jianfeng, Ge Lixin, Wang Shufen, Guang
Lianzhong, Guo Yiqing, Liang Mingxia, Zhang Shenyang, Bo Changhai, Jin Guofu.
Test methods for aluminium and aluminium alloy foils
– Part 4. Determination of surface wetting tension
1 Scope
This part of GB/T 22638 specifies the method for determination of aluminum foil’s
surface wetting tension.
This part applies to the determination of aluminum foil’s surface wetting tension.
2 Method principle
This method is based on the principle – on a fixed surface, BRUSH-TRY different
solutions, of which the wettability is different; CHOOSE different solutions, so as to
determine the aluminum foil’s surface wetting tension.
3 Reagents and materials
3.1 Formamide, analytically pure
3.2 Glycol ether, analytically pure
3.3 Distilled water
4 Preparation of test solutions
TAKE appropriate amount of formamide (3.1), glycol ether (3.2) and distilled water
(3.3); PREPARE the test solution according to Table 1; PUT into the test bottle for
later use.
Table 1
Serial number of test solution Test solution
1 Glycol ether
2 Formamide - glycol ether mixed solution (2.3 + 97.5)
3 Formamide - glycol ether mixed solution (26.5 + 73.5)
4 Formamide - glycol ether mixed solution (10.5 + 89.5)
5 Formamide - glycol ether mixed solution (19.0 + 81.0)
6 Formamide - glycol ether mixed solution (26.5 + 73.5)
7 Formamide - glycol ether mixed solution (35.0 + 65.0)
8 Formamide - glycol ether mixed solution (42.5 + 57.5)
9 Formamide - glycol ether mixed solution (48.5 + 51.5)