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GB/T 12704.2-2009: Textiles -- Test method for water-vapour transmission of fabrics -- Part 2: Water method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 12704.2-2009 | English | 489 |
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Textiles -- Test method for water-vapour transmission of fabrics -- Part 2: Water method
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GB/T 12704.2-2009
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Basic data | Standard ID | GB/T 12704.2-2009 (GB/T12704.2-2009) | | Description (Translated English) | Textiles -- Test method for water-vapour transmission of fabrics -- Part 2: Water method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | W04 | | Classification of International Standard | 59.080.30 | | Word Count Estimation | 21,240 | | Date of Issue | 2009-03-19 | | Date of Implementation | 2010-01-01 | | Quoted Standard | GB/T 3820; GB/T 6529; GB/T 8170 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.3 (Total No.143) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for determining the moisture permeability of the fabric evaporation method. This section includes two methods: Method A and Method B are inverted cup cup. This section applies to all types of sheet thickness of less than 10mm in the fabric. Among them, the method B inverted cup method applies only to test the waterproof breathable fabric. | GB/T 12704.2-2009: Textiles -- Test method for water-vapour transmission of fabrics -- Part 2: Water method
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Textiles.Test method for water-vapour transmission of fabrics.Part 2. Water method
ICS 59.080.30
W04
National Standards of People's Republic of China
Textiles - Test methods for water vapor permeability
Part 2. evaporation
Posted 2009-03-19
2010-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 12704 "textile fabrics moisture permeability test method" consists of two parts.
--- Part 1. absorption method;
--- Part 2. evaporation method.
This section GB/T Part of 212,704.
Appendix A of this section is normative appendix, Appendix B is an informative annex.
This part is proposed by the China Textile Industry Association.
This part of the National Standardization Technical Committee on Basic Standards Subcommittee Textiles (SAC/TC209/SC1) centralized.
This section is drafted. Textile Standard (Beijing) Co., Ltd. Inspection and Certification Center, National Textile Products Supervision and Inspection Center.
The main drafters of this section. Zhang.
Textiles - Test methods for water vapor permeability
Part 2. evaporation
1 Scope
GB/T 12704 This part specifies the method for determining the moisture permeability of the fabric by evaporation. This section includes two methods. Method A positive
Method B cup and inverted cup method.
This section applies to all kinds of pieces of fabric thickness of less than 10mm in. Among them, Method B inverted cup method only applies to waterproof breathable fabric
test.
2 Normative references
The following documents contain provisions which, through reference GB/T 12704 in this section constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
GB/T 3820 Textiles and textile products - Determination of thickness (GB/T 3820-1997, eqv ISO 5084.1996)
GB/T 6529 Textiles conditioning and testing using standard atmosphere (GB/T 6529-2008, ISO 139.2005, MOD)
GB/T 8170 repair value expressed about the rules and limit values and judgment
3 Terms and Definitions
The following terms and definitions apply GB/T 12704 in this section.
3.1
Vp T W
Under both sides to maintain the sample temperature and humidity conditions specified, within the time prescribed by vertical vapor mass per unit area of the sample, in grams per square
Hour meter [g/(m2 · h)] 24 hours or grams per square meter [g/(m2 · 24h)] as a unit.
3.2
W Vp P
In the specimen on both sides to maintain a predetermined temperature and humidity conditions, the vapor pressure at the unit, within a specified time through unit area of specimen vertical
Steam mass in grams Pascal hour [g/(m2 · Pa · h)] per square meter as a unit.
3.3
P Vp
Under both sides to maintain the sample temperature and humidity conditions prescribed under the unit vapor pressure difference, the vertical unit time through unit thickness, per unit
The vapor product sample mass, in grams per square centimeter centimeter Pascal seconds [g · cm/(cm2 · s · Pa)] as a unit.
Principle 4
Filled with distilled water to a certain temperature and sealed with breathable fabric sample cup is placed in a sealed environment specified temperature and humidity in accordance with certain
Changes within permeable cup quality of the sample to calculate the moisture permeability, moisture permeability and permeability coefficient.
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