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GB/T 27844-2011: Chemicals -- Solution/extraction behaviour of polymers in water
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 27844-2011 | English | 139 |
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Chemicals -- Solution/extraction behaviour of polymers in water
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GB/T 27844-2011
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Basic data | Standard ID | GB/T 27844-2011 (GB/T27844-2011) | | Description (Translated English) | Chemicals -- Solution/extraction behaviour of polymers in water | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A80 | | Classification of International Standard | 13.300; 11.100 | | Word Count Estimation | 6,680 | | Date of Issue | 2011-12-30 | | Date of Implementation | 2012-08-01 | | Quoted Standard | GB/T 21845; GB/T 22236 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 23 of 2011 | | 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 polymer dissolved in water and precipitation characteristics method. This standard applies to the determination of the polymer dissolved in water and precipitation characteristics. This standard does not apply to liquid polymers and under the conditions in this test polymers that react with water. This standard method is not applicable or not available, dissolution/precipitation characteristics of other methods should be used. At this time, the need to give the details of the methods used and the use of reason. | GB/T 27844-2011: Chemicals -- Solution/extraction behaviour of polymers in water---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.
Chemicals. Solution/extraction behaviour of polymers in water
ICS 13.300; 11.100
A80
National Standards of People's Republic of China
Chemicals polymer is dissolved in water/precipitation characteristics
Issued on. 2011-12-30
2012-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The Standards and Organisation for Economic Co-operation and Development (OECD) guidelines for chemical testing methods No.120 (2000) "polymer was dissolved in water
Solutions/precipitation characteristics of the "same (in English) of technical content.
This standard made the following editorial changes.
--- Delete the original text of the Background;
--- Added "Normative References" section, where GB/T 21845 and OECDNo.105.1995 technical content the same,
GB/T 22236 and DIN53733. 1976 technical content is the same.
This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points.
This standard was drafted. Chinese Academy of Inspection and Quarantine, China Chemical Technology Development Center of Jiangsu Coal Chemical Engineering Research
Institute Limited, the Chemical Institute of Standardization.
The main drafters. Zhang Jing, Falls Apart, Wang Xiaobing, Yang Ting, Guo Xinyu.
Chemicals polymer is dissolved in water/precipitation characteristics
1 Scope
This standard specifies the method for determination of the dissolution and release characteristics of the polymer in water.
This standard applies to the determination of the polymer is dissolved in water and precipitation characteristics.
This standard does not apply to liquid polymers and polymer under this test condition occurs with water used in the reaction. The standard method is not applicable or not
When available, the dissolution/precipitation of other methods should be used to study characteristics. In this case, we need to give details of the methodology used and the use of reason.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 21845 Chemicals water solubility test
GB/T 22236 plastic plastic products inspection test pulverized
3 PRINCIPLE OF THE METHOD
Dissolved in an aqueous medium in the polymer/precipitated by the following properties are modified flask method (see GB/T 21845) assay. For a
These particular polymers, such as emulsion polymers, prior to the adoption of this standard should have the initial preparation.
4 Method Description
4.1 test device
Apparatus used in the test are.
--- Grinding apparatus, for example, be made aware of the mill product particle size (see GB/T 22236);
--- Temperature oscillation device;
--- Membrane filter system;
---Analytical Instruments;
--- Standard sieve.
4.2 Sample Preparation
With the appropriate device will have a representative sample ground so that the particle size is reduced to 0.125mm ~ 0.25mm, in order to ensure the stability of the sample
Set, the grinding process to be cooled. Substance having rubber-like properties can be found in the liquid nitrogen temperature (see GB/T 22236) under ground.
If this does not achieve the desired particle size, particle size should be reduced as far as possible, this time should be reported in the test results. In the test report
, It should be explained pulverized sample before testing the method of storage.
4.3 Test procedure
4.3.1 Procedure
Weigh 10g sample 3 parts of the test substance, and were placed in three containers with glass stoppers, each added 1000mL of water. If confirmed
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