JB/T 3078-1999 Silicone impregnating varnish

This standard specifies the types, requirements, test methods, inspection rules, packaging, marking, storage and transportation of organic silicon impregnating varnishes. This standard applies to organic silicon impregnating varnishes for electrical insulation and polyester modified organic silicon impregnating varnishes. JB/T 3078-1999 Organic silicon impregnating varnish JB/T3078-1999 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T3078
1999-08-06
Wa Xian Ji Dong
2000-01-01
JB/T30781999
This standard is a revision of JB3078-82 "1053 Organic Silicone Impregnation Paint" and JB3079-82 "1054 Polymer Modified Organic Silicone Impregnation Paint.
This standard is consistent with JB3 Compared with JB3078-82 and JB3079-82, in addition to modifying the writing format, the above two standards are merged into one, and there are the following technical differences! ! Added three performance requirements: "Stability of paint in clear container", "Effect of paint on enameled wire", and "Resistance to solvent vapor"; 2 The test temperature of "viscosity" is changed from 20±1℃ to 23±2℃; 3 Power frequency electrical strength, test conditions *20±5℃" is changed to "23±2℃\; "20±5℃ relative humidity ( 95±3)% is collected as \after immersion in water at 23±2℃ for 24h\: the required value of 1053 type at 23±2℃ is changed from 65MV/m to 70MV/m; the required value after immersion in water at 23±2℃ for 24b is changed from 40MV/m to 60MV/m; 4 Volume resistivity, the test conditions "20±5℃\ are changed to "23±2℃; "20±5℃ relative turbidity (95±3)%" is changed to "after immersion in water for 7d; the required value: 1053 type after immersion in water for 7d is changed from 1.0× 102cm is changed to 1.D×10°-m; 1054 type is changed from 1.0×10*gcm to 1.0×10°2·m after the liquid water 7d value
: 5 "Thick layer drying after 24h in the wet environment" is changed to "Sequential layer curing ability", and the supplementary requirement value is: "s1, U1, [4.2 are all hooked" This standard will replace JB3078-82 and JB3079-82 from the month of implementation. The National Insulation Material Standardization Technical Committee proposed and centralized this standard. The drafting unit of this standard: Xi'an Insulation Material Factory. The drafters of this standard: Li Shulian, Ma Chaojun, Wang Yuli. This standard was first issued on April 12, 1982 and revised for the first time in 1999. This standard is entrusted to the National Technical Committee for Standardization of Insulating Materials for interpretation. 1
JB/T30781999
JB3078
JB3079-82
This standard specifies the model, requirements, test methods, inspection rules, packaging, marking, purchase and storage and transportation of silicone impregnating varnish. This standard applies to silicone impregnating varnish and modified silicone impregnating varnish for electrical insulation: 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in the small standards. At the time of publication of the standard, the versions shown are valid. All standards will be revised. All parties using this standard should explore the possibility of using the latest version of the following standards. GB/T198-1989 Test methods for solvent-containing insulating varnishes (neg[EC 60464-2:1989) GB/T10579-1989 General rules for inspection, packaging, marking, storage and transportation of solvent-containing insulating varnishes (negTEC60464-1:1976)
JB/T2197-[996
3 Classification and naming
The classification, naming and model compilation methods of electrical insulating materials products shall be in accordance with the provisions of JB/T2197. The product model is: the product model of organic silicon impregnation varnish is 1053; the product model of modified organic silicon impregnation varnish is 10544 Requirements
The performance requirements of this product are shown in Table 1.
5 Test methods
5.1 Appearance
According to the provisions of A1 and A2 of Appendix A in GB/T 1981-1989. 5.2 Viscosity
According to the provisions of Appendix B of GB/T1981-1989. 5.3 Solid content
According to the provisions of 2.3 of GB1981-1989: 5.4 Paint film drying time
According to the provisions of 2.4 of GB1981-1989
5.S Thick layer curing ability
According to the provisions of 2.7 of GB/T1981-1989, the sample baking conditions are as specified in Table 2 Wa Extremely slow 1999-08-06 tumor
2000-01-01 small cable
Viscosity No. 4 cup, 23 ± 2%
Solid content 135±293h
Light film! Drying time
200±2℃.2h
JB/T3078
180±2℃.1h
Thick layer curing ability
Stability of paint in sensitive container
Effect of cable on cable
Core diameter 3mm
200±2 yuan
200 +2%,
Low frequency electrical strengthwwW.bzxz.Net
1) 23±2
2)200±2℃
3) 23±2%, very technical 24 after
Shenzhen Vocational and Technical College limited collection
1) 23±2
2) 200±2℃
3) 23±2℃. After immersion in water for 7 days
Solvent vapor resistance
(benzene, propylene, methanol, hexane, carbon disulfide) Model
Temperature℃
Stability of varnish in the mouthpiece
According to 2.10 of GB/T1981-1989. Continued effect on enameled wire
According to 2.11 of GB/T1981-1989. 5.8 Elasticity
The paint should be evenly dissolved, free of impurities and particles. Opalescent light is allowed. The film should be smooth after drying
not inferior to S1, 1, 14.2. Uniform
Viscosity increase should not exceed 4 times of the initial value. Pencil hardness ≥H
No cracking
No cracking
2 1.0 × 101z
2 1.0 × 10%
21.0 x 101
210× 109
21.0 x107
There is no change in the adhesion of the coating, such as no separation, no blistering and no dripping. Not sticky (slight stickiness is allowed) Five kinds of paint pass any two of them
According to the provisions of 3.1 in GB 1981-1989, low-frequency electrical strength
According to the provisions of 3.5 in GB/T【981-1989: 5.10 Volume resistivity
According to the provisions of 3.4 in GB/T198[—1989 Solvent vapor resistance
JB/T3078
According to Appendix E in GB/1981-1989, the sample is exposed to 7d at 23±2℃ in the container 5.12 Paint film preparation conditions
According to the provisions of 2.4.2 in GB/T1981-1989: The conditions are: after the first staining, drip at room temperature for 30 minl and bake in a constant temperature box at 200±2℃ for 0.5~lh. Take out and cool to table temperature, turn 180° and dip in the second paint, drip dry at room temperature for 30 minutes, put in a constant temperature oven at 200±2℃, and bake for 12 hours for 1053 type paint film and 10 hours for 1054 type paint film. 6 Inspection rules
6.1 The factory inspection items are 1, 2, 3, 4, 9 (1), 10 (1) in Table 1. 6.2 Others shall be carried out in accordance with the provisions of Chapters 3 and 4 of GB/10579-1989. Packaging, marking, storage and transportation
shall be carried out in accordance with the provisions of Chapter 2 of GB/10579-1989. Cheek
JB/T3078
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