
GB/T 15064.7-1994 Test method for graphite emulsion of picture tubes - Particle size test method
time:
2024-08-09 02:09:58
- GB/T 15064.7-1994
- Abolished
Standard ID:
GB/T 15064.7-1994
Standard Name:
Test method for graphite emulsion of picture tubes - Particle size test method
Chinese Name:
显象管石墨乳试验方法 粒度试验方法
Standard category:
National Standard (GB)
-
Date of Release:
1994-04-18 -
Date of Implementation:
1994-12-01 -
Date of Expiration:
2009-04-01
Standard ICS number:
Electrical Engineering >> 29.040 Insulating FluidsChina Standard Classification Number:
Building Materials>>Carbon Materials>>Q51 Graphite Materials
alternative situation:
Replaced by GB/T 15064-2008
Release date:
1994-04-18Review date:
2004-10-14Drafter:
Liu Huidong, Yan Zaijin, Zhang Youyuan, Liu YouhongDrafting Organization:
Shandong Nanshu Graphite Mine and Xianyang Nonmetallic Mineral Research Institute of National Building Materials BureauFocal point Organization:
Shandong Nanshu Graphite MineProposing Organization:
National Building Materials Bureau Standardization InstitutePublishing Department:
State Bureau of Technical SupervisionCompetent Authority:
China Building Materials Industry Association

Skip to download
Summary:
This standard specifies the test method for determining the particle size of graphite emulsions for picture tubes. This standard is applicable to the determination of the particle size distribution of graphite emulsions for color picture tubes and black and white picture tubes. GB/T 15064.7-1994 Test method for graphite emulsions for picture tubes Particle size test method GB/T15064.7-1994 Standard download decompression password: www.bzxz.net

Some standard content:
National Standard of the People's Republic of China
Test method for graphite emulsion of kinescope
Test method for particle size
Method for size distribution of colloidal graphite for kinescope1 Subject content and scope of applicationbzxZ.net
This standard specifies the test method for determining the particle size of graphite emulsion of kinescope. This standard is applicable to the determination of the particle size distribution of graphite emulsion of color kinescope and black and white kinescope. 2 Instruments and materials
a. Particle size distribution measuring instrument: optical sedimentation particle size distribution measuring instrument, measuring range 0.1~200μm; b. Ultrasonic diffuser;
c. Optical microscope: working magnification 675 times or more; d. (Carboxy) methyl cellulose powder: chemically pure; e. Glass slide: 76mm×26mm.
3 Test steps
3.1 Preparation of dispersion liquid and graphite test solution
GB/T 15064.7-94
3.1.1 The dispersion liquid for measuring the particle size of the black bottom graphite milk raw material of the color picture tube is distilled water, and the dispersion liquid for measuring the particle size of other graphite milk raw materials is prepared as follows: add about 0.1g (carboxy) methyl cellulose powder to 500mL distilled water, stir it thoroughly to make it completely dissolved, and measure the viscosity after standing for 24 hours. The viscosity is adjusted to 5-10mPa·s to prepare a dispersion liquid. 3.1.2 Weigh about 3g of graphite powder, put it in a mortar, add about 3mL of dispersion liquid, and gently blend it with a pestle until it becomes a uniform and shiny paste. Then add a little distilled water with a rinse bottle to blend it into a graphite test solution. 3.2 Drop the graphite test solution on a glass slide and disperse it evenly. Observe it under a microscope and measure the maximum particle size. 3.3 According to the operating steps specified in the instruction manual of the particle size distribution analyzer, determine the weight accumulation percentage of the specified particle size, and the measurement result shall be accurate to the integer digit of the percentage.
3.4 Take the arithmetic mean of the two measurement results as the test result. The difference between the two measurement values of the weight accumulation percentage of the specified particle size shall not exceed 6%, otherwise a third measurement shall be carried out, and the test result shall be calculated based on the two measurement values that do not exceed the tolerance. Additional notes:
This standard was proposed by the Standardization Research Institute of the State Building Materials Bureau. This standard is under the jurisdiction of Shandong Nanshu Graphite Mine. This standard was drafted by Shandong Nanshu Graphite Mine and Weiyang Non-metallic Mineral Research Institute of the State Building Materials Bureau. The main drafters of this standard are Liu Huidong, Wei Zai Jin, Zhang Youyuan, and Liu Youhong. Approved by the State Bureau of Technical Supervision on April 18, 1994 318
Implementation on December 1, 1994
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.
Test method for graphite emulsion of kinescope
Test method for particle size
Method for size distribution of colloidal graphite for kinescope1 Subject content and scope of applicationbzxZ.net
This standard specifies the test method for determining the particle size of graphite emulsion of kinescope. This standard is applicable to the determination of the particle size distribution of graphite emulsion of color kinescope and black and white kinescope. 2 Instruments and materials
a. Particle size distribution measuring instrument: optical sedimentation particle size distribution measuring instrument, measuring range 0.1~200μm; b. Ultrasonic diffuser;
c. Optical microscope: working magnification 675 times or more; d. (Carboxy) methyl cellulose powder: chemically pure; e. Glass slide: 76mm×26mm.
3 Test steps
3.1 Preparation of dispersion liquid and graphite test solution
GB/T 15064.7-94
3.1.1 The dispersion liquid for measuring the particle size of the black bottom graphite milk raw material of the color picture tube is distilled water, and the dispersion liquid for measuring the particle size of other graphite milk raw materials is prepared as follows: add about 0.1g (carboxy) methyl cellulose powder to 500mL distilled water, stir it thoroughly to make it completely dissolved, and measure the viscosity after standing for 24 hours. The viscosity is adjusted to 5-10mPa·s to prepare a dispersion liquid. 3.1.2 Weigh about 3g of graphite powder, put it in a mortar, add about 3mL of dispersion liquid, and gently blend it with a pestle until it becomes a uniform and shiny paste. Then add a little distilled water with a rinse bottle to blend it into a graphite test solution. 3.2 Drop the graphite test solution on a glass slide and disperse it evenly. Observe it under a microscope and measure the maximum particle size. 3.3 According to the operating steps specified in the instruction manual of the particle size distribution analyzer, determine the weight accumulation percentage of the specified particle size, and the measurement result shall be accurate to the integer digit of the percentage.
3.4 Take the arithmetic mean of the two measurement results as the test result. The difference between the two measurement values of the weight accumulation percentage of the specified particle size shall not exceed 6%, otherwise a third measurement shall be carried out, and the test result shall be calculated based on the two measurement values that do not exceed the tolerance. Additional notes:
This standard was proposed by the Standardization Research Institute of the State Building Materials Bureau. This standard is under the jurisdiction of Shandong Nanshu Graphite Mine. This standard was drafted by Shandong Nanshu Graphite Mine and Weiyang Non-metallic Mineral Research Institute of the State Building Materials Bureau. The main drafters of this standard are Liu Huidong, Wei Zai Jin, Zhang Youyuan, and Liu Youhong. Approved by the State Bureau of Technical Supervision on April 18, 1994 318
Implementation on December 1, 1994
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.
- Recommended standards
- SY/T 5154-1999 Sampling methods for oil and gas reservoir fluids
- JB/T 8092-1996 Small submersible electric pump
- SL/T 149-1995 General technical requirements for solid-state storage and collection systems for hydrological data SL/T 149-95
- CJ/T 3027.1-1993 Urban public transport signal system - light rail transit CJ/T3027.1-93
- GB 8570.3-1988 Determination of residual content of liquid anhydrous ammonia by gravimetric method
- QB/T 1872-2004 Leather for clothing
- CB/T 743-1999 Commonly used text symbols for ship design
- QB/T 3572-1999 硼硅酸盐玻璃化学分析方法
- JB/T 2771-1992 PN16.0~32.0MPa joint
- JB/T 7722-1995 Test methods for grain cleaning machines
- GB 4086.2-1983 Tables for statistical distributions;x**2-distribution
- HG 3094-1988 Method for measuring stack height of multi-layer lip seal assemblies for hydraulic and pneumatic applications
- SJ/T 10589-1994 Technical data of Type DG-502 electronic glass
- JB/T 9840.2-1998 Technical requirements for air brake valves in air brake systems for tractor trailers
- SJ 20025-1992 Generic specification for gas snesors of metal-oxide semiconductor
Please remember: "bzxz.net" is the combination of the first letters of the Chinese pinyin of the four Chinese characters "standard download" and the international top-level domain name ".net". ©2024 Standard download websitewww.bzxz.net Mail:bzxznet@163.com