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GB/T 23175-2008: Pulp -- Determination of fiber length (raster method)
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23175-2008 | English | 209 |
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Pulp -- Determination of fiber length (raster method)
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GB/T 23175-2008
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Basic data | Standard ID | GB/T 23175-2008 (GB/T23175-2008) | | Description (Translated English) | Pulp -- Determination of fiber length (raster method) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y30 | | Classification of International Standard | 85-010 | | Word Count Estimation | 9,983 | | Date of Issue | 2008-12-30 | | Date of Implementation | 2009-09-01 | | Quoted Standard | GB/T 450; GB/T 740; GB/T 4688; QB/T 1462 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.27 (Total No.140) | | 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 the determination of pulp fiber length. This standard applies to the determination of various papermaking raw fiber length. The fiber length of less than 0. 2mm and miscellaneous debris cells, in this standard is not considered fibers in the measurement and statistical results are not included. | GB/T 23175-2008: Pulp -- Determination of fiber length (raster 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.
Pulp. Determination of fiber length (raster method)
ICS 85-010
Y30
National Standards of People's Republic of China
Pulps - Determination of fiber length (raster method)
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
The standards on the basis of "measurement papermaking fiber length (raster Act)," the former light industry standard QB/T 2597-2003 on.
The standard proposed by China National Light Industry Council.
This standard by the National Standardization Technical Committee of the paper industry.
This standard was drafted. China Pulp and Paper Research Institute, the national paper quality supervision and inspection center, China Paper Association Professional Committee of Standardization
Members will.
The main drafters of this standard. Wang, Tang Zhiming, Wang Juhua.
Pulps - Determination of fiber length (raster method)
1 Scope
This standard specifies the method for determination of the length of the pulp fibers.
This standard applies to the determination of a variety of paper-making raw material fiber length. Length of less than 0.2mm and miscellaneous pieces of fiber cells in this standard
The fiber is not considered in the measurement and statistical results are not included.
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 450 to take a sample of paper and cardboard (GB/T 450-2002, eqv ISO 186.1994)
GB/T 740 pulp samples taken (GB/T 740-2003, ISO 7213. 1981, IDT)
GB/T 4688 paper, paperboard and pulp fibers analysis (GB/T 4688-2002, eqv ISO 9184.1990)
Wet Solutions QB/T 1462 from pulp Laboratories
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
By a large number of equal width, equally spaced linear slit composed of optics. Raster engraving on glass is usually made. This standard
Round grating with grating, engraved with 200 weekly slots.
3.2
Results fiber length divided by the number of total income, by L.
3.3
By the length of the calculated weight-average fiber length represented by L1.
3.4
Calculated by the mass of the weight average fiber length, represented by Lw.
Note. In the past, the number average fiber length Ln represents general use, length - weight average fiber length Lw represented by and referred to as the weight average fiber length; quality
Volume - weight average fiber length represented by Lww, and called the double weight average fiber length. The standard line with international standards, the average number of fibers
Length represented by L, the length - weight average fiber length L1 expressed by mass - the weight average fiber length is represented by Lw.
Principle 4
Using a projector or projection microscope, the fiber image is enlarged on fiber samples, presented on a projection screen. Then grating displacement sensor
, A moving image along the fiber, the fiber length is automatically measured out and fed to a computer for statistical calculations. Thus, the number average fiber
The length dimension, the length - the weight average fiber length, mass - the weight-average fiber length and length distribution can be calculated.
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