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GB/T 29761-2022: Carbon fibre - Determination of sizing content
Status: Valid GB/T 29761: Evolution and historical versions
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Carbon fibre - Determination of sizing content
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GB/T 29761-2022
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| GB/T 29761-2013 | English | 599 |
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Carbon fibre -- Determination of size content
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GB/T 29761-2013
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Basic data | Standard ID | GB/T 29761-2022 (GB/T29761-2022) | | Description (Translated English) | Carbon fibre - Determination of sizing content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q53 | | Word Count Estimation | 6,685 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 29761-2013: Carbon fibre -- Determination of size content---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.
Carbon fibre. Determination of size content
ICS 59.100.20
Q36
National Standards of People's Republic of China
Determination of carbon fiber sizing content
(ISO 10548.2002, MOD)
Issued on. 2013-09-18
2014-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard uses redrafted Law Amendment uses ISO 10548.2002 "Determination of carbon fiber sizing agent content."
This standard and ISO 10548.2002 compared to adjust the structure, listed in Appendix A of this standard and ISO 10548.2002 chapter
Section number control list.
This standard and ISO 10548.2002 as compared to, technical differences and the reasons are as follows.
--- Because the ISO 1886.1990 has been abolished, removed the ISO 10548.2002 Chapter 2 Normative reference document
ISO 1886.1990;
--- Because the ISO 1886.1990 has been deleted, delete the ISO 10548.2002, paragraph 2, Chapter 5;
--- Temperature and humidity affect the test results, the humidity increases the sample temperature and humidity conditions and time;
--- A method of Soxhlet extraction method increases the mass of the sample, the sample and sample dish drying temperature unified 105 ℃ ± 5 ℃, increase
Operability;
--- Method B digestion method increases the quality of the sample and sample dish sample drying temperatures unified 105 ℃ ± 5 ℃, increased operability
For sex;
--- Method C pyrolysis method increases the mass of the sample, temperature, and time-resolved, increasing maneuverability;
Wetting agent content --- Method B and Method C formula introduced correction factor k is calculated to increase maneuverability;
--- Chapter 7, "precision" adds precision of the method on the content and presentation of Table 1.
The standard proposed by China Building Materials Federation.
This standard by the National Standardization Technical Committee fiberglass (SAC/TC245) centralized.
This standard is drafted by. Nanjing Fiberglass Research and Design Institute Limited, Anhui Jia Li Qi Aerospace Carbon Fiber Co., Ltd.,
Jane and Technology Development Co., Ltd., the national glass fiber product quality supervision and inspection center, expanding Fiber Co., Ltd. Weihai.
Participated in the drafting of this standard. High-tech Co., Ltd. Jiangsu-day birds.
The main drafters of this standard. Huang Ying, Wang Yumei, Chen Shang, Shi Zhuo, Fang Yunwei, Xu Min, Liang Yu Xin, Yang Gang, Li Shu Township.
Determination of carbon fiber sizing content
1 Scope
This standard specifies the method for determination of carbon-fiber yarn sizing content.
This method is suitable for carbon fiber and its products.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Sizing size
In the production process, the chemical substance in the coating on the fibers, to protect the surface of the fiber, the fiber with optimized interface state matrix material, to facilitate
Operation and use.
2.2
Wetting agent content sizecontent
Sizing mass percentage of carbon fiber sizing agent containing the total mass.
Principle 3
Use one of the following three methods to remove the wetting agent, and removing the sample is measured before and after sizing quality.
--- A method of Soxhlet extraction, using wetting agents can be completely dissolved in a suitable solvent when;
--- Method B sulfuric acid and hydrogen peroxide mixed solution digestion method, wetting agents can not be completely cured partially dissolved in solvent use;
--- Method C pyrolysis method, wetting agents can be employed in a high temperature in complete decomposition.
Methods A and B need to repeat the drying and weighing until a constant mass of the sample. For routine testing known material may be experimentally
To determine a sample dried to a constant mass minimum time required. If the carbon fiber sizing agent or easy to absorb water, special attention should be.
4 Sample
Take two or more samples from the unit product or laboratory sample, the arithmetic average of the test results for the samples measured
Test values.
Wear gloves when handling specimens or using tweezers to avoid contamination.
The humidity 5
Before the test, the unit should be product or laboratory sample at a temperature of 23 ℃ ± 2 ℃, relative humidity of 50% ± 10% of the standard environment
Wet down at least 6h. When necessary, the humidity can be pre-processed samples were dried.
6 Test methods
6.1 Method A. Soxhlet
6.1.1 Instruments and Materials
6.1.1.1 balances, minimum scale 0.1mg.
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