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GB/T 37406-2019 English PDF (GBT37406-2019)

GB/T 37406-2019 English PDF (GBT37406-2019)

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GB/T 37406-2019: Detection method of degree of sphericity of spherical silica for electronic packaging -- Particle dynamic photoelectric projection method

This Standard specifies the particle dynamic photoelectric projection method of degree of sphericity, average degree of sphericity and distribution of sphericity degree of spherical silica for electronic packaging. This Standard is applicable to 4~300 spherical particle of spherical silica for electronic packaging.
GB/T 37406-2019
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 31.030
L 90
Detection method of degree of sphericity of spherical
silica for electronic packaging - Particle dynamic
photoelectric projection method
ISSUED ON: MAY 10, 2019
IMPLEMENTED ON: DECEMBER 01, 2019
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Method principle ... 5
5 Environmental conditions ... 6
6 Test equipment and reagents ... 6
7 Sample preparation ... 7
8 Analysis steps ... 7
9 Result calculation ... 7
10 Test report ... 8
Detection method of degree of sphericity of spherical
silica for electronic packaging - Particle dynamic
photoelectric projection method
1 Scope
This Standard specifies the particle dynamic photoelectric projection method of degree of sphericity, average degree of sphericity and distribution of sphericity degree of spherical silica for electronic packaging.
This Standard is applicable to 4??m~300??m spherical particle of spherical silica for electronic packaging.
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 of the referenced document (including any amendments) applies.
GB/T 6678, General Principles for Sampling Chemical Products
GB/T 6682, Water for analytical laboratory use - Specification and test methods
GB/T 15481, General requirements for the competence of testing and
calibration laboratories
ISO 13322-2, Particle size analysis - Image analysis methods - Part 2:
Dynamic image analysis methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply. 3.1 degree of sphericity
A degree that a single particle plane projection image is close to a standard circle.
3 - Sample cell;
4 - Light source;
5 - Light path system;
6 ?€? Image acquisition equipment;
7 - Image analyzer;
8 - Display.
Figure 1 -- Schematic diagram of particle dynamic photoelectric
projection method
5 Environmental conditions
Laboratory environmental conditions: temperature is controlled at 20??C~25??C; relative humidity is controlled below 80%.
Other laboratory environmental conditions are in accordance with the
requirements of GB/T15481.
6 Test equipment and reagents
6.1 Equipment
The equipment required include:
a) Particle dynamic photoelectric projection analyzer: measurement range: 4??m~300??m;
b) Test tube with stopper: specification is 10mL;
c) Balance: accuracy is 0.02g;
d) Ultrasonic cleaner.
6.2 Reagents and solutions
Dispersant: deionized water meets the requirements of analytical laboratory water in GB/T 6682.

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