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GB/T 22906.2-2008: Testing of cores -- Part 2: Conditioning of test samples
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| GB/T 22906.2-2008 | English | 149 |
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Testing of cores -- Part 2: Conditioning of test samples
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GB/T 22906.2-2008
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Basic data | Standard ID | GB/T 22906.2-2008 (GB/T22906.2-2008) | | Description (Translated English) | Testing of cores -- Part 2: Conditioning of test samples | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y30 | | Classification of International Standard | 85-010 | | Word Count Estimation | 5,582 | | Date of Issue | 2008-12-30 | | Date of Implementation | 2009-09-01 | | Adopted Standard | ISO 11093-2-1994, MOD | | Regulation (derived from) | National Standard Approval Announcement 2008 No.25 (Total No.138) | | 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 standard atmospheric conditions Zhixin test used. This section applies to all kinds of paper core. | GB/T 22906.2-2008: Testing of cores -- Part 2: Conditioning of test samples---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Testing of cores Part 2. Conditioning of test samples
ICS 85-010
Y30
National Standards of People's Republic of China
Determination of paper core
Part 2. The temperature and humidity of the treated samples
(ISO 11093-2.1994, Paperandboard-Testingofcores-
Part 2. Conditioningoftestsamples, MOD)
Posted 2008-12-30
2009-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 22906 "paper core measurement" is divided into nine sections.
--- Part 1. sample taken;
--- Part 2. temperature and humidity of the treated samples;
--- Part 3. Determination of moisture content (oven drying method);
--- Part 4. Determination of dimensions;
--- Part 5. Determination of characteristics of concentric rotation;
--- Part 6. Determination of flexural strength (three-point method);
--- Part 7. Determination of modulus of elasticity (three-point method);
--- Part 8. Determination of natural frequency and the elastic modulus (experimental modal analysis);
--- Part 9. Determination of flat crush strength.
This section GB/T Part of 222,906.
The partial modification of the use of ISO 11093-2.1994 "Paper and board Determination Part 2. temperature and humidity of the treated samples."
This part of ISO 11093-2. compared to 1994, the main differences are as follows.
--- International Standard ISO document standard will be referenced in normative references converted to its corresponding national standard,
GB/T 10739-2002 paper, paperboard and pulp sample processing and testing standard atmospheric conditions (eqv ISO 187.1990);
--- According to national circumstances, this section only provides a standard atmospheric conditions. temperature (23 ± 1) ℃, relative humidity (50 ± 2)%, deleted
Suitable for tropical countries standard atmospheric conditions temperature (27 ± 1) ℃, relative humidity (65 ± 2)%.
This part is proposed by the China National Light Industry Council.
This part of the National Standardization Technical Committee under the jurisdiction of the paper industry.
This section drafted by. China Pulp and Paper Research Institute, China Paper Association Professional Committee of Standardization.
The main drafters of this section. Qiuwen Lun.
Determination of paper core
Part 2. The temperature and humidity of the treated samples
1 Scope
This section GB/T 22906 specifies the standard atmospheric conditions Zhixin test used.
This section applies to a variety of the core.
2 Normative references
The following documents contain provisions which, through reference GB/T 22906 and become part of this Part of this provision. 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 10739-2002 paper, paperboard and pulp sample processing and testing standard atmospheric conditions (eqv ISO 187.1990)
3 Terms and Definitions
The following terms and definitions apply to this part of the GB/T 22906 of.
3.1
The sample with the predetermined temperature, water balance reaches a predetermined process between the relative humidity of the atmosphere.
NOTE. Processing temperature and humidity to ensure that the sample paper core has a stable physical state. In certain circumstances, the processing time required to extend the sample temperature and humidity, until
Physical state required so far.
4 standard atmospheric conditions
Standard atmospheric conditions when the sample paper core measurement. temperature (23 ± 1) ℃, relative humidity (50 ± 2)%.
5. Apparatus
Constant temperature and humidity chamber. automatic air conditioning system able to provide a standard temperature and humidity chamber temperature and relative humidity, atmospheric conditions, but also in
Maintaining constant temperature and humidity associated with the indoor atmospheric point consistent conditions, indoor air circulation obtained. Atmospheric conditions, temperature and humidity chamber should
Verified in accordance with GB/T 10739-2002 specified in Appendix A.
6 Test procedure
6.1 Sample pre-drying
In order to quickly achieve a balance between the sample water and atmospheric conditions, the sample should be placed in a relative humidity of 20% to 35%, temperature
40 ℃ ± 2 ℃ atmospheric conditions in pre-drying 48h.
6.2 Test
The sample was placed in the gas stream can be freely accessible to their respective surface environment, until it reaches a balance between the sample water and the atmospheric conditions.
After weighing twice the current difference between the sample weighing not more than 0.1% of the sample mass, it is considered to be reached between the sample and the atmospheric conditions
balance.
7 Test report
The test report shall include the following items.
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