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GB/T 7690.1-2013 English PDF

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GB/T 7690.1-2013: Reinforcements -- Test method for yarns -- Part 1: Determination of linear density
Status: Valid

GB/T 7690.1: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 7690.1-2013	English	154	Add to Cart	3 days [Need to translate]	Reinforcements -- Test method for yarns -- Part 1: Determination of linear density	Valid	GB/T 7690.1-2013
GB/T 7690.1-2001	English	239	Add to Cart	3 days [Need to translate]	Reinforcements -- Test method for yarns -- Part 1: Determination of linear density	Obsolete	GB/T 7690.1-2001
GB/T 7690.1-1987	English	RFQ	ASK	3 days [Need to translate]	Textile glass--Continuous filament yarns, staple fibre yarns and rovings--Determination of linear density	Obsolete	GB/T 7690.1-1987

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Basic data

Standard ID	GB/T 7690.1-2013 (GB/T7690.1-2013)
Description (Translated English)	Reinforcements -- Test method for yarns -- Part 1: Determination of linear density
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	Q36
Classification of International Standard	59.100.10
Word Count Estimation	8,880
Older Standard (superseded by this standard)	GB/T 7690.1-2001
Quoted Standard	ISO 291; ISO 1887; ISO 3344; ISO 10548-2002
Adopted Standard	ISO 1889-2009, IDT
Regulation (derived from)	National Standards Bulletin 2013 No. 23
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 glass fiber, carbon fiber, aramid fiber or other reinforcing fibers determination of density of yarn. This standard applies to all types of yarn, including yarn and twist yarn, cables, textured yarns, rovings and yarn length.

GB/T 7690.1-2013: Reinforcements -- Test method for yarns -- Part 1: Determination of linear density

---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.
Reinforcements Test method for yarns Part 1. Determination of linear density ICS 59.100.10 Q36 National Standards of People's Republic of China Replacing GB/T 7690.1-2001 Test method for yarns reinforced Determination of linear density. Part 1 Part 1. Determinationoflineardensity (ISO 1889.2009, Reinforcementyarns- Determinationoflineardensity, IDT) Issued on. 2013-11-27 2014-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 7690 "Test method for yarns enhanced" is divided into six sections. --- Part 1. Determination of linear density; --- Part 2. Determination of twist; --- Part 3. Glass fiber breaking force and elongation measurement; --- Part 4. Determination of stiffness; --- Part 5. Determination of glass fiber diameter of the fiber; --- Part 6. Determination of twist balance index. This section GB/T 17690 Part of. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 7690.1-2001 "Enhanced Part 1 Test method for yarns. Determination of linear density", and GB/T 7690.1-2001 main differences are as follows. --- In a broader range of applications, in addition to the original standard glass fiber coated carbon fiber and aramid fiber yarn, but also includes other Reinforcing fibers (see Chapter 1); --- Remove the "Reference Standards" GB/T 18374, an increase of ISO 291, ISO 1887 and ISO 3344, ISO 10548. 2002 (see Chapter 2, Section 2 of the 2001 edition); --- "Terms and Definitions" Added "line density" is defined (see 3.1); --- "Principle," adds carbon fiber linear density measurement principle expressed content (see Chapter 4). This section uses the translation method identical with ISO 1889.2009 "Enhanced measurement of linear density of yarn." This part made the following editorial changes. --- Consistent with the existing standard series, the standard name will be changed to "Enhanced Test method for yarns - Part 1. linear density measurement set". Consistency correspondence between this international document standards and the references of the following criteria. --- GB/T 2918-1998 plastic sample conditioning and testing of the standard environment (ISO 291.1997, IDT); --- GB/T 9914.1-2013 Test methods of enhancing Part 1. Determination of moisture content (ISO 3344.1997, IDT); --- GB/T 9914.2-2013 Enhanced Test methods - Part 2. Determination of glass fiber content of combustibles (ISO 1887.1995, MOD). This part of the National Standardization Technical Committee fiberglass (SAC/TC245) centralized. This section is responsible for drafting. Nanjing Fiberglass Research and Design Institute Limited, the national glass fiber product quality supervision and inspection center. The main drafters of this section. Xu Qi, Shi Yujiang, Wang Yumei, Hao Zheng Tao, Huang Ying, Xu Min. The previous versions of GB/T 7690.1-2001 release case. --- GB/T 7690.1-1987. Test method for yarns reinforced Determination of linear density. Part 1

1 Scope

GB/T 7690 provisions of this part of the glass fiber, carbon fiber, aramid fiber or other reinforcing fiber yarn measuring method of linear density. This method is applicable to all types of yarn, including yarn and twisted yarn, cable, textured yarns, rovings and staple fiber yarn.

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. ISO 291 environmental standard plastic sample conditioning and testing (Plastics-Standardatmospherefor conditioningandtesting) ISO 1887 Determination of combustible textile glass fiber content (Textileglass-Determinationofcombustible- mattercontent) ISO 3344 Determination of moisture content enhancement products (Reinforcementproducts-Determinationofmoisture content) ISO 10548.2002 Determination of carbon fiber sizing content (Carbonfibre-Determinationofsizecontent)

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Linear density lineardensity < Yarns> yarn mass per unit length with or without a wetting agent. NOTE. Normally the unit using tex, equivalent per kilometer yarn quality is 1g. Principle 4 Known mass weighed yarn sample containing wetting agents or removal length, calculate the mass per unit length. Wetting agent can be removed by extraction and drying (aramid fiber), burning (glass fiber), extraction or pyrolysis (carbon fiber) method. For carbon fiber yarn to remove sizing yarn linear density can be calculated from the density and wetting agent content yarn line containing wetting agents to give. Wetting agent content according to ISO 10548.2002 measured. However, due to the presence of measurement error due to the inherent sizing content obtained by calculation There is a small error will result.

5 Instruments

5.1 Determination of yarn containing sizing instruments 5.1.1 bobbin circumference 1m. Generally means yarn with the outlet, to form a uniform thin yarn is wound. Also with a power plant,

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