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GB/T 26253-2010: Determination of water vapour transmission rate for plastics-film and sheeting -- Infrared detection sensor method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 26253-2010 | English | 209 |
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Determination of water vapour transmission rate for plastics-film and sheeting -- Infrared detection sensor method
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GB/T 26253-2010
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Basic data | Standard ID | GB/T 26253-2010 (GB/T26253-2010) | | Description (Translated English) | Determination of water vapour transmission rate for plastics-film and sheeting -- Infrared detection sensor method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G31 | | Classification of International Standard | 83.140.10 | | Word Count Estimation | 9,990 | | Date of Issue | 2011-01-14 | | Date of Implementation | 2011-06-01 | | Quoted Standard | GB/T 6672 | | Adopted Standard | ISO 15106-2-2003, MOD | | Regulation (derived from) | National Standard Approval Announcement 2011 No.2 (Total No.167) | | 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 test method using an infrared detector measuring water vapor transmission rate. This standard applies to plastic film, containing plastic multilayer films, measured sheet materials such as water vapor transmission rate. | GB/T 26253-2010: Determination of water vapour transmission rate for plastics-film and sheeting -- Infrared detection sensor method
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Determination of water vapour transmission rate for plastics-film and sheeting. Infrared detection sensor method
ICS 83.140.10
G31
National Standards of People's Republic of China
Plastic film and sheet water vapor
Transmittance measuring infrared detector method
(ISO 15106-2.2003, Plastics-Filmandsheeting-Determination
Part 2. Infrareddetectionsensormethod, MOD)
Issued on. 2011-01-14
2011-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This revised standard adopts ISO 15106-2.2003 "Plastics film and sheet water vapor permeability test methods - Part 2. Infrared detection
Detector Law "(in English).
This standard adopts ISO 15106-2.2003 when, taking into account China's national conditions made some changes. The standards listed in Appendix A
Reg number and ISO 15106-2.2003 reg control list number, is given in Appendix B of this standard and ISO 15106-2.2003
Differences and technical reasons list for reference.
This standard and ISO 15106-2.2003 standard compared, the main differences are as follows.
--- On the "3 Terms and definitions" in the reference test film redefined;
--- The "7 Instrument" in the air to the carrier gas (air or nitrogen);
--- To the instrument schematic representation framework;
--- On the "9 Steps" appropriate deletion and modification.
The Standard Appendix A and Appendix B are informative.
The standard proposed by China National Light Industry Council.
This standard by the National Standardization Technical Committee of plastic products.
This standard was drafted. Shanghai Food and Drug Packaging Materials Testing Institute, National Plastic Products Quality Supervision and Inspection Center (Beijing).
The main drafters of this standard. Wang Rongjia, Jung, Wangxiu Xian.
Plastic film and sheet water vapor
Transmittance measuring infrared detector method
1 Scope
This standard specifies the test method for determination of infrared detector water vapor transmission rate.
This standard applies to plastic film, plastic-containing measuring multilayer composite film, sheet materials such as water vapor transmission rate.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 6672 plastic film and sheet thickness measurement of the mechanical measurements (GB/T 6672-2001, idt ISO 4593.1993)
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
The water vapor permeability watervapourtransmissionrate
Under specified test conditions, the amount of water vapor per unit area of \u200b\u200bthe sample through the test unit time to reach equilibrium.
NOTE. The standard transmission rate of water vapor in the definition of GB/T 1037-1988 water vapor transmission rate of the definition of the meaning is the same, the water vapor transmission rate (amount)
24 hours in units of grams per square meter [g/(m2 · 24h)].
3.2
Reference test film referencetestspecimen
Under certain test conditions, the water vapor permeability are known or obtained by the water vapor permeability cup method test weighing diaphragm.
Principle 4
When a sample is placed in the test chamber, the test sample chamber separated into two chambers. Samples of low humidity chamber side, the other side of the humidity chamber, which is filled with water
Vapor and the temperature is known. Because there is a certain humidity difference, water vapor permeability to humidity sample from the humidity chamber through the chamber, carried by the carrier gas to IR
Detector produces a certain amount of electrical signal when the test reaches a steady state, the electrical output of the calculated sample water vapor permeability.
5 Sample
5.1 Samples should be representative, wrinkles, creases, pinholes. Samples should be of uniform thickness, the area of \u200b\u200beach piece of the sample should be larger than the instrument test
Area, and can be installed on the instrument seal.
5.2 Unless otherwise specified, each sample is at least three.
5.3 Unless otherwise specified, the thickness of the test should be GB/T 6672, each sample measuring at least three evenly spaced points.
6 Test conditioning
Unless otherwise specified, the sample should be at a temperature of ± 23 ℃ 2 ℃, relative humidity 50% ± 10% of the conditions, the state adjusted bu
Between at least 4h.
7 Instrument
7.1 meter infrared moisture permeability is shown in Figure 1. Breathable instrument by the humidity control system, the testing chamber, infrared detector, drying tube and flow meter and other groups
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