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Light Industry Industry Standard of the People's Republic of China
Calcium halophosphate phosphor for fluorescent lamps
QB/T2259-96
This standard was drafted based on the plan for the formulation and revision of industry standards issued by the China Light Industry General Association. During the three consecutive years from 1990 to 1992, the national calcium halophosphate phosphor was tested and a large amount of data was accumulated. It was also drafted based on the revision opinions on the draft standard put forward by the standard discussion meeting and the review meeting, and on the basis of nearly two years of test verification.
The technical requirements for "grade A products" in this standard are formulated with reference to the more advanced similar products and their technical indicators in the world. There are nine technical requirements in this standard, and the test methods are determined according to the following principles: a. If there are national standards, they shall be implemented in accordance with the national standards; b. Refer to the test methods of related similar products in China; c. If several test methods coexist, select the method commonly used in China; d. If there is no unified standard or the original standard is incomplete, it shall be formulated again. Appendix A of this standard is the appendix of the standard.
This standard was proposed by the Quality Standards Department of the China Light Industry General Association. This standard is under the jurisdiction of the National Electric Light Source Standardization Center. The drafting units of this standard are Yingkou Fluorescent Material Factory and Electric Light Source Material Research Institute of China Light Industry Association. The main drafters of this standard are Gao Yupei, Liu Yanlian and Zhou Weiguo. Fanquan
Light Industry Industry Standard of the People's Republic of China
Calcium halophosphate phosphor for fluorescent lamps
QB/T2259-96
This standard specifies the brand, grade classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of calcium halophosphate phosphor for fluorescent lamps. This standard is applicable to the manufacture of calcium halophosphate phosphor for ordinary lighting fluorescent lamps (hereinafter referred to as "phosphor") 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. The versions shown at the time of publication of this standard are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards.
GB4070--83 General test method for phosphors Phosphor brands
GB 4073-83
GB 5838-86
GB 8761--88
GB10682-89
Glossary of phosphor terms
Oxidation, europium oxide Determination of particle size distribution Light transmittance sedimentation method Tubular fluorescent lamps for general lighting
QB/T2260--96
QB/T 2261-96
3 Definitions
Test method for relative brightness of calcium halophosphate phosphors for lamps Test method for emission spectrum and color coordinates of calcium halophosphate phosphors for lamps This standard adopts the definitions of terms specified in GB5838, and supplements the following definitions. 3.1 Calcium halophosphate phosphor
It is a solid powder substance activated by antimony or antimony and manganese, with a fluoronitrogenapatite crystal structure, which can emit fluorescence under the excitation of 253.7nm ultraviolet light.
The properties, chemical composition, grades and classification of phosphors 4.1 Properties of phosphors
4.1.1. The appearance of phosphors should be white solid powder. 4.1.2 Phosphors emit visible light under the excitation of 253.7nm ultraviolet light. 4.2 Chemical formula of phosphor
3Cas(PO.)2. Ca(F, C1)s,Sb, Mn or 3Cas(PO.).,Ca(F,C1).Sb
Approved by China Light Industry General Association on November 15, 19962
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Implemented on July 1, 1997
4.3 Brands and grades
4.3.1 Brands
QB/T2259-96
The phosphors specified in this standard are divided into three types according to their luminous colors: daylight color, cold white and warm white. The brands are G7, G5 and G6 as specified in GB4073.
4.3.2 Grades
According to the technical parameters of phosphors, they can be divided into A-grade, B-grade and C-grade products. Technical requirements
5.1 The phosphor should be free of visible mechanical impurities.
5.2 The moisture content in the phosphor should be less than or equal to 0.3%. 5.3 The density (d) of the phosphor should be: 3.04g/cm≤d≤3.20g/cm5.4 The phosphor should be sieved on a nylon sieve of 80 mesh/cm without any residue. 5.5 The water-soluble nitride content in the phosphor should be less than or equal to 0.003%. 5.6 In the particle size distribution of the phosphor, the grading of the weight percentage of the phosphor with a particle size of 5 to 25μm should comply with the provisions of Table 1.
Table 1, particle size distribution of phosphor
w/wa(%)
A grade
The weight of phosphor with a particle size of 5~25nm, WoB grade
80~<90
The weight of all phosphors.
The classification of the center particle size (D5.) in the phosphor particle size distribution shall comply with the provisions of Table 2. Table 2 Center particle size of phosphor particle size distribution
Dso(μm)
A grade
B grade
>i3~≤14.5
C grade
C grade
The classification of the relative brightness (B) of phosphor under 253.7nm ultraviolet excitation shall comply with the provisions of Table 3. Table 3 Relative brightness of phosphor
A grade
Note: The relative brightness (B) of phosphor produced by wet process shall be greater than or equal to 90%. 5.9
C grade
The classification of the color coordinates of phosphor under 253.7nm ultraviolet excitation shall comply with the provisions of Table 4. 3
QB/T2259--96
Fluorescent color coordinates
Grade A
X=0.330±0.003
Y=0.360±0.003
X=0.398±0.003
Y=0.403±0.003
X=0.470±0.003
Y=0,430±0.003
For details of standard phosphor, please see Appendix A (Standard Appendix). 6. Test method
6.1 Visible mechanical impurities in phosphor
B grade
X=0.330±0.004
Y=0.360±0.005
X=0.398±0.004
Y=0.403±0.005
X=0,470±0.004
Y=0.430±0.005
The test for visible mechanical impurities in phosphor shall be carried out in accordance with the provisions of Chapter 2 of GB4070. 6.2 Moisture content in phosphor
6.2.1 Principle of the test
C grade
X=0.330±0.005
Y=0,560±0.007
X=0,398±0.005
Y=0.403±0.007
X=0.470±0.005bzxZ.net
Y-0.430±0.007
After the phosphor sample is dried to a constant weight, the percentage of the weight lost to the original sample weight is the moisture content of the phosphor.
6.2.2 Test equipment
a. Analytical balance with a sensitivity of 0.001g:
b. Electric constant temperature drying oven:
.e. Surface area:
d. Desiccator.
6.2.3 Test steps
Dry the clean surface III to constant weight and weigh Wi, then put 10±1g of the phosphor sample to be tested into the weighed surface III: weigh W, then put it into the electric constant temperature drying oven, dry it at 100~120°C to constant weight, take it out and put it in the desiccator, cool it to room temperature and weigh W3, calculate according to formula (1). W: W.x100%
Moisture (%) =
W-weight of surface m, g:
W-total weight of sample and surface III before drying, g; W.-total weight of sample and surface blood after drying: g. 6.3 Density of phosphor
The density test of phosphor shall be carried out in accordance with the provisions of Chapter 3 of GB4070. 6.4 Residue of phosphor on 80 mesh/cm nylon sieve (1)
Weigh 10g of phosphor to be tested, put it in a standard sieve made of 80 mesh/cm nylon sieve, and sieve it by vibration until all the phosphor passes through the sieve.
6.5 Water-soluble chloride content in phosphor QB/T2259-96
The water-soluble chloride content test in phosphor shall be carried out in accordance with the provisions of Chapter 1 of GB4070. 6,8 Particle size distribution of phosphor
Particle size distribution test of phosphor shall be carried out in accordance with the provisions of Chapter 4 of GB8761 or GB4070. 6.7 Center particle size (D5.) of phosphor particle size distribution test ... 7.3 Phosphors shall meet all technical requirements specified in this standard. If one or more technical indicators do not meet the technical requirements specified in this standard, they shall be deemed as unqualified products. 7.4 If the test results are unqualified, samples shall be randomly drawn from the same batch of phosphors for re-inspection: the re-inspection results shall be the final test results.
75, the grade of phosphors shall be determined by the grade corresponding to the lowest indicator among the technical indicators. 7.6 After each batch of phosphors passes the inspection, the inspection unit shall issue a certificate of conformity, which shall indicate the technical indicators, brand, batch number and grade, technical standard number, and shall be stamped with the inspector's seal. 8 Marking, packaging, storage, transportation
8.1 Phosphors shall be packed in sealed plastic bags and barrels (boxes) or plastic woven bags. 82 The outer packaging barrel (box) or plastic woven bag of phosphor should have a certificate of conformity, and the outer packaging should be printed with a) phosphor name, brand, grade; b) trademark: c) batch number: d) net weight: f) manufacturing date; f) production unit. Phosphor should be stored in a dry, clean environment away from light. 83
8.4 The storage period of phosphor is generally not more than 18 months. Those that exceed the storage period should be retested. Only when the test results meet the technical requirements specified in this standard can they be used in production. 8.5 Phosphor should be protected from rain, drenching and severe vibration during transportation. 5
Appendix (Appendix to the standard)
Chemical composition, properties and brand of standard phosphor A1
The chemical composition, properties and brand of standard phosphor should comply with the provisions of Chapter 4 of this standard. A2: Purpose of standard phosphor
A2.1 Used to test the relative brightness of phosphor. A2.2 Used as a reference sample for checking the accuracy of the particle size distribution and color coordinate test results of phosphor. A3 Technical requirements of standard phosphor
A3.1 Standard phosphor shall comply with the provisions of Grade A products in 5.1, 5.2, 5.3, 5.4, 5.5 and 5.6, 57, 5.9 of this standard.
A3.2 The initial luminous flux of a 40±0.5W straight tube fluorescent lamp with a diameter of 38mm made of standard phosphor shall be greater than or equal to 24301m.
A3.3 The color coordinates of a 40±0.5W straight tube fluorescent lamp with a diameter of 38mm made of standard phosphor shall comply with the provisions of high-quality products in GB10682.
Determination of phosphor brightness correction coefficient
The phosphor brightness correction coefficient shall be determined according to formula (A1). K:
In the formula,
is the correction coefficient of the brightness of the phosphor:
Φ—luminous flux of a 40±0.5W fluorescent lamp with a diameter of 38mm made of standard phosphor, 1m; dn
is equal to 2430-1m.
A5 standard phosphor should be confirmed and provided by a national authorized quality certification unit, and the quantity provided each time should be no less than 100kgYIKAONTKAca
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