This standard specifies the type, requirements, test methods, inspection rules, packaging, marking, storage and transportation of alkyd air-drying covering paint. This standard applies to yellow to brown air-drying or low-temperature drying paint made of vegetable oil-modified alkyd resin dissolved in solvents such as No. 200 petroleum solvent and xylene. JB/T 875-1999 Alkyd air-drying covering paint JB/T875-1999 Standard download decompression password: www.bzxz.net

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This standard is a revision of JB875-80 "1231 Alkyd Drying Cover Paint". Compared with B875-80, this standard has the following differences except for the modification of the standard writing format: 1 According to the provisions of 2.2 in GB/T1981-1989, the viscosity measurement temperature in Table 1 is changed from "20±1°C" to 23±2℃"; 2 According to the provisions of 2.4 in GB/T1981-989, the fifth performance item "drying time" in Table 1 is changed to "paint film drying time", and "20h" is required to be changed to "non-stick" means; 3 According to the provisions of 3.1 in GB1981-1989, change "thermoelasticity" to "elasticity"; the requirement "6h" is changed to "non-cracking"; 4 According to the provisions of 3.3 in GB/T1981-1989, change "oil resistance" "Resistance" is changed to "resistance to insulating liquids", and the requirement "24h" is changed to "the paint film does not dissolve, bubble, wrinkle or swell"; 5 According to the provisions of 3.5 in GB/T1981-1989, the "breakdown strength" "Changed to \power frequency electrical strength\; changed "1) Normal state" to "1) 23±2℃\; "(2) After immersed in water at 20±5℃ for 24 hours" changed to \2) 23± After soaking in water at 2°C for 24 hours." This standard will replace 875-80 from the date of implementation. This standard is proposed and administered by the National Insulating Materials Standardization Technical Committee. This standard was drafted by: Xi'an Insulation Materials Factory, etc. Drafters of this standard: Du Chaoyun, Li Shulian. This standard was first published in 1966, revised for the first time in 1980, and revised for the second time in 1999. This standard is entrusted to the National Insulating Materials Standardization Technical Committee to be responsible for interpretation. 1
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JB/T875±1999
JB87580
This standard specifies the model, requirements, test methods, inspection rules, packaging, marking, storage and transportation of alkyd drying covering paint . This standard applies to yellow to brown air-drying or low-temperature drying paints made from vegetable oil-modified alkyd resin dissolved in solvents such as No. 200 petroleum solvent and xylene.
2
Quoted standards
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. The editions shown were valid at the time of publication of the standard. All standards are subject to revision and parties using this standard should explore the possibility of using the latest version of the standard listed below. GB/T1981-1989 Test methods for solvent-based insulating paint (neqIEC60464-2:1989) GB/T10579-1989 General rules for inspection, packaging, marking, storage and transportation of solvent-based insulating paint (neqIEc60464-1:1976)
JB/T2197—1996
3 Classification and naming
The classification, naming and model compilation method of electrical insulation material products are in accordance with JB/T2197. The model number of this product is 1231, 4 requirements
The performance requirements of this product are shown in Table 1.
5 Test method
5.1 Appearance
According to the provisions of A1 and A2 of Appendix A in GB/T1981-1989. 5.2 Viscosity
shall be carried out in accordance with the provisions of Appendix B in GB/T1981-1989. 5.3 Acid value
shall be carried out in accordance with the provisions of Appendix C in GB/T1981-1989. 5.4 Solid content
shall be carried out in accordance with the provisions of 2.3 in GB/T1981-1989. 5.5 Paint film drying time
shall be carried out in accordance with the provisions of 2.4 in GB/T1981-1989.麺
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Appearance| |tt||Performance
Viscosity No. 4 cup, 23±2℃
Acid value
Solid content
Quantity 105±2℃.2h
Paint film drying time 23±2℃, 20H
JB/T8751999
Table 1
Unit
mgkOHg
%
3mm. 150±2℃.6h
Elastic mandrel diameter
Insulating liquid resistance 105±2℃ in transformer oil. 24h power frequency electrical strength
(1) 23±2℃
(2) 90±2℃
(3) 23±2℃. After soaking in water for 24h
Flexibility
shall be carried out according to the provisions of 3.1 in GB/T1981-1989. 5.7 Resistance to insulating liquid
shall be carried out in accordance with the provisions of 3.3 in GB/T1981-1989. 5.8 Power frequency electrical strength
shall be carried out in accordance with the provisions of 3.5 in GB/T1981-1989. 5.9 Paint film preparation conditions
MV/m
Drip dry for 11.5h after the first dip, and dry for 1 hour at a temperature of 105±2°C; drip dry for 1-1.5h after the second dip , dried at a temperature of 105±2℃ for 6h6 Inspection Rules
6.1 Factory inspection performance is items 1, 2, 3, 4, 5 and 8 (1) in Table 1. Others shall be carried out according to the provisions of Chapter 2 in GB/T10579-1989. 6.2
7 Packaging, marking, storage and transportation
shall be carried out in accordance with Chapters 3 and 4 of GB/T10579-1989. Request
Requirement
The paint should be dissolved evenly and should not contain impurities and insoluble particles. The paint film should be lightened afterward
80
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Non-stick (the surface is allowed to be slightly sticky)
No cracking
The paint film does not dissolve, does not bubble, does not wrinkle, and does not swell 70|| tt||≥ 45
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4
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JB/T8751999
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