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GB/T 34442-2017: Pulps -- Determination of fiber coarseness -- Unpolarized light method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 34442-2017 | English | 119 |
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Pulps -- Determination of fiber coarseness -- Unpolarized light method
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GB/T 34442-2017
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Basic data | Standard ID | GB/T 34442-2017 (GB/T34442-2017) | | Description (Translated English) | Pulps -- Determination of fiber coarseness -- Unpolarized light method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y30 | | Classification of International Standard | 85.010 | | Word Count Estimation | 6,649 | | Date of Issue | 2017-10-14 | | Date of Implementation | 2018-05-01 | | 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 | GB/T 34442-2017: Pulps -- Determination of fiber coarseness -- Unpolarized light method---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.
Pulps - Determination of fiber coarseness - Unpolarized light method
ICS 85.010
Y30
National Standards of People's Republic of China
Pulps - Determination of roughness - Non - polarized light method
2017-10-14 Published
2018-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of this document may be patentable. The release of this document
The agency does not assume responsibility for identifying these patents.
This standard proposed by the China Light Industry Federation.
This standard by the National Paper Industry Standardization Technical Committee (SAC/TC141) centralized.
This standard was drafted in. Chengdu Printing Co., Ltd., Chengdu Jinding Security Printing Co., Ltd., China Pulp and Paper Research Institute, China
Paper Association Standardization Professional Committee.
The main drafters of this standard. Lin Li, Liu Fangqun, Wang Zhen, Feng Guomei, She Danbo.
Pulps - Determination of roughness - Non - polarized light method
1 Scope
This standard specifies the use of non-polarized light determination of fiber thickness method.
This standard applies to the determination of fiber length less than 7.5mm chemical pulp, fiber length less than 0.2mm not included in the calculation results.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 462 paper, cardboard and pulp analysis of moisture samples
GB/T 740 pulp sample taken
GB/T 5399 Determination of pulp slurry concentration
GB/T 22903 standard test for pulp and paper physics
GB/T 24324 Preparation of paper for laboratory tests of pulp physics - Conventional paper sheet former method
GB/T 24327 Pulp Laboratory Wet Dissociation Chemical pulp dissociation
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Fiber roughness fibercoarseness
The mass per unit length of a particular fiber (absolutely dry).
3.2
Unpolarizedlight unpolarized
The vibration surface of the light is randomly arranged light.
4 principle
A certain amount of fiber suspension is passed through a fiber orientation chamber with a two-dimensional space and a single fiber skeleton is imaged using non-polarized light technology
Like scanning, get the actual length of each fiber. The actual total length of the measured fiber is calculated by dividing the total mass of the fiber measured by the total length of the fiber
Degrees, we get the average roughness of the fiber.
5 Equipment and Materials
5.1 fiber quality analyzer
5.1.1 by the Ministry of measurement and sample delivery system. The measurement department consists of a LED light source, a measuring cell and a digital CCD camera (eg
Figure 1); sample delivery system using vacuum suction sample, during the test, the sample has been in a vacuum state, to avoid the presence of empty samples
Impact of gas on test results.
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