GB/T 16256-2008 English PDF

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GB/T 16256-2008: Textile fibres -- Test method for linear density -- Vibro-scope method
Status: Valid

GB/T 16256: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 16256-2008	189	Add to Cart	3 days	Textile fibres -- Test method for linear density -- Vibro-scope method	Valid
GB/T 16256-1996	279	Add to Cart	3 days	Textile fibres--Determination of linear density--Vibroscope method	Obsolete

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Basic data

Standard ID: GB/T 16256-2008 (GB/T16256-2008)
Description (Translated English): Textile fibres -- Test method for linear density -- Vibro-scope method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: W04
Classification of International Standard: 59.060
Word Count Estimation: 8,871
Date of Issue: 2008-08-07
Date of Implementation: 2008-12-01
Older Standard (superseded by this standard): GB/T 16256-1996
Quoted Standard: GB 6529; GB/T 8170; GB/T 14334
Regulation (derived from): National Standard Approval Announcement 2008 No.12 (Total No.125)
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 technical instrument measuring the resonant frequency of vibration test methods-Determination of linear density of textile fibers. This standard applies to the testing unit line length of uniform density single textile fibers. High and flat shaped hollow fiber can refer to the use of chemicals.

GB/T 16256-2008: Textile fibres -- Test method for linear density -- Vibro-scope 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.
Textile fibres. Test method for linear density. Vibroscope method ICS 59.060 W04 National Standards of People's Republic of China Replacing GB/T 16256-1996 Test method for linear density of textile fibers Vibrometer method Posted 2008-08-07 2008-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 16256-1996 "textile fiber linear density of vibration test meter method." This standard and GB/T 16256-1996 compared to the main changes are as follows. a) modify the "Range" (1996 version Chapter 1, Chapter 1 of this edition); b) increasing the reference standard (Chapter 2 of this edition); c) Remove the "Definitions" (Chapter 3 of the 1996 version); d) Modify the "principle" (1996 edition, Chapter 4, Section 3 of this edition); e) an increase of instruments and appliances (Excerpts 4.2,4.3,4.4,4.5); f) modify the linear density units pre-tension (1996 version 8.1, this version 7.3); g) increased pre humidity control, humidity control and testing standard atmosphere (Chapter 5 of this edition); h) to modify the sample and test sample preparation (1996 edition, Chapter 7, Chapter 6 of this edition); i) an increase of the calculation result of the formula (Excerpts of 8.1, 8.2); j) increase the fiber samples weighing calibration for calibrating vibration analyzer (Excerpts A.1.2). Appendix A of this standard is an informative annex. This standard is proposed and managed by China Fiber Inspection Bureau. This standard by the Shanghai Fiber Inspection is responsible for drafting. The main drafters of this standard. Xu Yun, Xue Yongmei. This standard was first published in 1996, this is the first revision. Test method for linear density of textile fibers Vibrometer method

1 Scope

This standard specifies the technical instrument measuring the resonant frequency of vibration Test Method Determination of linear density of textile fibers. This standard applies to units in the test line length of uniform density single textile fibers. High and flat shaped hollow chemical fiber Dimensional reference use.

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 6529 textiles conditioning and testing - Standard atmospheres GB/T 8170 numerical rounding rules GB/T 14334 chemical fiber staple sampling method Principle 3 By length of the unit linear density of individual fibers in a uniform tension to a predetermined resonant frequency of the vibration, the fibers according to the moment of inertia, Initial modulus fibers, the resonant frequency of the vibrating wire fiber length and pre-tension value, automatically calculate and display linear density of the sample.

4 instruments and appliances

4.1 vibration instrument should have the following accuracy. a) vibration analyzer with tension clamp quality should be within ± 0.5% of the value of a predetermined range; b) measuring the resonant frequency of error does not exceed ± 0.5%; c) error fiber vibrating wire length does not exceed ± 1%. 4.2 tweezers, scissors, velvet boards, brushes. 4.3 Tension clamp. 4.4 Cutter. 10mm, 20mm, tolerance of ± 0.01mm. 4.5 torsion balance. Range 5mg, dividing the value of 0.01mg. 5 preset humidity, the humidity and atmospheric testing standard 5.1 presetting wet When the sample exceeds the standard moisture regain regain the need for pre humidity control. --- Temperature does not exceed 50 ℃; --- Relative humidity of 10% to 25%; --- Longer than 30min. 5.2 Standard conditioning and testing atmosphere 5.2.1 polyester (PET), polyacrylonitrile (acrylic), temperate three standard polypropylene (PP) samples according to GB 6529 provisions atmosphere execution, Recommended humidity-time 1h. ......

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