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Position: Chinese Standard in English/GB/T 7690.1-2013
GB/T 7690.1-2013   Reinforcements - Test Method for Yarns - Part 1: Determination of Linear Density (English Version)
Standard No.: GB/T 7690.1-2013 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 6000 words Price(USD):120.0 remind me the price change

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Implemented on:2014-8-1 Delivery: via email in 1 business day
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Standard No.: GB/T 7690.1-2013
English Name: Reinforcements - Test Method for Yarns - Part 1: Determination of Linear Density
Chinese Name: 增强材料 纱线试验方法 第1部分:线密度的测定
Chinese Classification: Q36    Glass fibre
Professional Classification: GB    National Standard
ICS Classification: 59.100.10 59.100.10     Textile glass materials 59.100.10
Issued by: AQSIQ;SAC
Issued on: 2013-11-27
Implemented on: 2014-8-1
Status: valid
Superseding:GB/T 7690.1-2001 Reinforcements - Test method for yarns - Part 1: Determination of linear density
Language: English
File Format: PDF
Word Count: 6000 words
Price(USD): 120.0
Delivery: via email in 1 business day
Reinforcements - Test method for yarns Part 1: Determination of linear density 1 Scope This part of GB/T 7690 specifies a method for the determination of the linear density of glass-fibre, carbon-fibre, aramid-fibre and any other reinforcement-fibre yarns. It is applicable to all types of yarn, including single yarns, double and cabled yarns, textured yarns, rovings and staple-fibre yarns. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. ISO 291 Plastics - Standard atmosphere for conditioning and testing ISO 1887 Textile glass - Determination of combustible-matter content ISO 3344 Reinforcement products - Determination of moisture content ISO 10548:2002 Carbon fibre - Determination of size content 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 linear density (of a yarn) mass per unit length of the yarn, with or without size Note: The unit generally used is the tex, which corresponds to 1 g per kilometre of yarn. 4 Principle A yarn test specimen of known length, with or without size, is weighed and the mass per unit length calculated. In the case where the yarn must be desized, this is done by extraction and drying (in the case of aramid fibre), by calcination (in the case of glass fibre) or by extraction or pyrolysis (in the case of carbon fibre). In the case of carbon-fibre yarns, the linear density of the desized yarn may also be calculated from the linear density of the sized yarn and the size content determined in accordance with ISO 10548:2002. However, the result obtained in this way will include a small error due to the inherent error involved in determining the size content. 5 Apparatus 5.1 Apparatus for determinations on sized yarn 5.1.1 Spool, preferably with a circumference of 1 m. The spool is generally fitted with a traversing system to wind the yarn in thin layers. It may also include a tensioning system to tension the yarn while a test specimen is being taken. The spool shall be calibrated in such a way that, for all specimen lengths, the actual length obtained is accurate to ± 0.3 %. The calibration of the spool shall take into consideration the required specimen length, the type of yarn and the type of material. This calibration shall be carried out with a particular tension in the yarn, and the operator shall be made aware of this tension. For specimens < 5 m in length (in the case of certain carbon and aramid yarns and for glass rovings of 2000 tex or greater), replace the spool by other equipment enabling specimens to be cut to the required length with the required accuracy. A sketch of such equipment is shown in Figure 1.
Foreword I 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Apparatus 6 Test specimens 7 Conditioning and test atmosphere 8 Procedure 9 Expression of results 10 Precision 11 Test report
GB/T 7690.1-2013 is referred in:
* GB 24160-2009 Hoop-wrapped composite cylinders with steel liner for the on-board storage of compressed natural gas as a fuel for automotive vehicles
* GB 24160-2009 Hoop-wrapped composite cylinders with steel liner for the on-board storage of compressed natural gas as a fuel for automotive vehicles
* GB/T 25045-2010 Basalt fiber roving
*T/CATSI 02007-2020 Fully-wrapped carbon fiber reinforced cylinder with a plastic liner for the on-board storage of compressed hydrogen as a fuel for land vehicles
*HG/T 20696-2018 Technical code of reinforced plastics equipment for chemical industry
*GB/T 25045-2025 Basalt fiber roving
Code of China
Standard
GB/T 7690.1-2013  Reinforcements - Test Method for Yarns - Part 1: Determination of Linear Density (English Version)
Standard No.GB/T 7690.1-2013
Statusvalid
LanguageEnglish
File FormatPDF
Word Count6000 words
Price(USD)120.0
Implemented on2014-8-1
Deliveryvia email in 1 business day
Detail of GB/T 7690.1-2013
Standard No.
GB/T 7690.1-2013
English Name
Reinforcements - Test Method for Yarns - Part 1: Determination of Linear Density
Chinese Name
增强材料 纱线试验方法 第1部分:线密度的测定
Chinese Classification
Q36
Professional Classification
GB
ICS Classification
Issued by
AQSIQ;SAC
Issued on
2013-11-27
Implemented on
2014-8-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB/T 7690.1-2001 Reinforcements - Test method for yarns - Part 1: Determination of linear density
Language
English
File Format
PDF
Word Count
6000 words
Price(USD)
120.0
Keywords
GB/T 7690.1-2013, GB 7690.1-2013, GBT 7690.1-2013, GB/T7690.1-2013, GB/T 7690.1, GB/T7690.1, GB7690.1-2013, GB 7690.1, GB7690.1, GBT7690.1-2013, GBT 7690.1, GBT7690.1
Introduction of GB/T 7690.1-2013
Reinforcements - Test method for yarns Part 1: Determination of linear density 1 Scope This part of GB/T 7690 specifies a method for the determination of the linear density of glass-fibre, carbon-fibre, aramid-fibre and any other reinforcement-fibre yarns. It is applicable to all types of yarn, including single yarns, double and cabled yarns, textured yarns, rovings and staple-fibre yarns. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. ISO 291 Plastics - Standard atmosphere for conditioning and testing ISO 1887 Textile glass - Determination of combustible-matter content ISO 3344 Reinforcement products - Determination of moisture content ISO 10548:2002 Carbon fibre - Determination of size content 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 linear density (of a yarn) mass per unit length of the yarn, with or without size Note: The unit generally used is the tex, which corresponds to 1 g per kilometre of yarn. 4 Principle A yarn test specimen of known length, with or without size, is weighed and the mass per unit length calculated. In the case where the yarn must be desized, this is done by extraction and drying (in the case of aramid fibre), by calcination (in the case of glass fibre) or by extraction or pyrolysis (in the case of carbon fibre). In the case of carbon-fibre yarns, the linear density of the desized yarn may also be calculated from the linear density of the sized yarn and the size content determined in accordance with ISO 10548:2002. However, the result obtained in this way will include a small error due to the inherent error involved in determining the size content. 5 Apparatus 5.1 Apparatus for determinations on sized yarn 5.1.1 Spool, preferably with a circumference of 1 m. The spool is generally fitted with a traversing system to wind the yarn in thin layers. It may also include a tensioning system to tension the yarn while a test specimen is being taken. The spool shall be calibrated in such a way that, for all specimen lengths, the actual length obtained is accurate to ± 0.3 %. The calibration of the spool shall take into consideration the required specimen length, the type of yarn and the type of material. This calibration shall be carried out with a particular tension in the yarn, and the operator shall be made aware of this tension. For specimens < 5 m in length (in the case of certain carbon and aramid yarns and for glass rovings of 2000 tex or greater), replace the spool by other equipment enabling specimens to be cut to the required length with the required accuracy. A sketch of such equipment is shown in Figure 1.
Contents of GB/T 7690.1-2013
Foreword I 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Apparatus 6 Test specimens 7 Conditioning and test atmosphere 8 Procedure 9 Expression of results 10 Precision 11 Test report
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Keywords:
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