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GB/T 32993-2016: Determination of volume resistivity of carbon fibre
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Determination of volume resistivity of carbon fibre
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GB/T 32993-2016
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Basic data | Standard ID | GB/T 32993-2016 (GB/T32993-2016) | | Description (Translated English) | Determination of volume resistivity of carbon fibre | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q36 | | Classification of International Standard | 59.100.20 | | Word Count Estimation | 10,185 | | Date of Issue | 2016-10-13 | | Date of Implementation | 2017-09-01 | | Regulation (derived from) | National Standard Notice No.1716 of 2016 | | 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 32993-2016: Determination of volume resistivity of carbon fibre---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.
Determination of volume resistivity of carbon fiber
ICS 59.100.20
Q36
National Standards of People's Republic of China
Determination of volume resistivity of carbon fiber
(ISO 13931..2013, Carbonfibre-Determinationofvolumeresistivity, MOD)
2016-10-13 released
2017-09-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard uses the re-drafting method to modify the measurement of carbon fiber volume resistivity using ISO 13931..2013.
This standard has a structural adjustment compared to ISO 13931..2013, which is listed in Appendix A and ISO 13931..2013
A comparison of the numbers.
The technical differences between this and ISO 13931..2013 are as follows.
--- on the normative reference documents, this standard has made a technical differences in the adjustment to meet China's technical conditions, adjust the situation
The situation is reflected in Chapter 2, "Normative references", as follows.
● replace ISO 1889 with equivalent GB/T 7690.1 with international standard;
Replace GB 10548 with GB/T 29761 with international standard modification;
● GB/T 29762 with international standard GB 11567;
● GB/T 30019 instead of ISO 10119 with modified international standard;
- In order to make the steps in the method more explicit, the steps in the "monofilament" sample connected to the resistance meter (see 4.3.2) are added;
- Increased number of samples and calculations of results (see 4.3.5 and 5.3.5).
This standard is proposed by the China Building Materials Federation.
This standard is the national glass fiber standardization technical committee (SAC/TC245) centralized.
The drafting of this standard. Nanjing Glass Fiber Research and Design Institute Co., Ltd., Jiangsu Tian Bird High-tech Co., Ltd.
The main drafters of this standard. Huang Ying, Wang Yumei, Wang Jiaqing, Shi Zhuo, Ma Dan, Chen Lixuan.
Determination of volume resistivity of carbon fiber
1 Scope
This standard specifies the carbon fiber volume resistivity determination method, method A. monofilament method and method B. yarn bundle method.
This standard applies to carbon fiber tow, carbon fiber yarn and so on.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 7690.1 Reinforcements - Test methods for yarns - Part 1. Determination of linear density (GB/T 7690.1..2013,
ISO 1889..2009, IDT)
GB/T 29761 Determination of carbon fiber sizing agent content (GB/T 29761..2013, ISO 10548..2002, MOD)
GB/T 29762 Determination of Diameter and Cross Section of Carbon Fiber (GB/T 29762;.2013, ISO 11567..1995, MOD)
GB/T 30019 Determination of carbon fiber density (GB/T 30019..2013, ISO 10119..2002, MOD)
3 principle
The volume resistivity is calculated from the resistance of the specimen, the length of the specimen, and the cross-sectional area. The resistance and sample length are measured by the test. method
A specifies the method for the determination of the volume resistivity of carbon fiber monofilaments, the cross-sectional area of which is calculated from the diameter of the monofilament. Method B specifies the carbon fiber
The method of measuring the volume resistivity of the yarn bundle is calculated based on the density and the linear density of the sample.
4 Method A. Monofilament method
4.1 Instruments and materials
4.1.1 Length measuring tool with an accuracy of 0.1mm.
4.1.2 DC resistance tester, the accuracy of not less than 0.5%.
4.1.3 Specimen box, with a thickness of about 0.3 mm, with a length of 25 ± 0.5 mm.
4.2 samples
4.2.1 cut from the sample length of 40mm ~ 50mm of the yarn segment, and root separation into monofilaments.
4.2.2 Take a monofilament straight along the center line of the specimen frame (5.1.3) (see 1 in Figure 1) and bond it to the ends of the specimen frame with a conductive adhesive
(See Figure 3, 3), the formation of two nodes, at each node and then with a conductive adhesive bonding a copper wire (see Figure 1 2), so that
Connected to fiber monofilament, copper wire is used to connect DC resistance tester. Prepare at least 3 samples.
4.2.3 Place the prepared sample at a temperature of (23 ± 2) ° C and a relative humidity of (50 ± 10)% for at least 2 h,
The organic solvent in the agent is fully evaporated.
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