The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. Subsequent revisions of dated citations shall not apply to this standard, and the latest version of undated citations shall not apply to this standard.
GB/T 1981-2009 Test method for solvent-based insulating paint
GB/T 15022-2017 Definition and general requirements for solvent-free polymerizable resin composites for electrical insulation
GB/T 15023-2017 Test method for solvent-free polymerizable resin composites for electrical insulation
requirements
All products should meet the requirements of Table 1 of this standard, and when the demand side requires performance other than Table 1, it should be specifically stated in the order contract.
| project | unit | Indicators |
| Appearance | /
| Transparent liquid, no mechanical impurities, the paint film is flat and smooth after curing |
| Viscosity (4# cup, 23±2°C) | S | 50～70 | 80～120 |
Thick layer curing capacity (120±2°C, 0.5h) | /
| Not lower than S1, U1, I2.2 uniform |
| Surface drying time (120±2°C, 0.5h) | / | Non-stick |
Volumetric resistivity (1) Normal (2) After being soaked in water for 24 hours | Ω·m |
≥1.0×1012 ≥1.0×1011 |
Electrical strength (continuous boost mode) (1) Normal (2) After being soaked in water for 24 hours | MV/m |
≥20 ≥18 |
Test method
1. Mix evenly according to A:B=1:1 (weight ratio) and then test.
2. The tests of various indicators are carried out in accordance with the provisions of GB/T15023-2017 "Test Methods for Solvent-free Polymeric Resin Composites for Electrical Insulation".
3. Thick layer curing capacity: in accordance with Article 20.1 of GB/T15023-2017.
4. Volumetric resistivity and electrical strength: the curing condition of the specimen is 130±2°C, 1h.
Use the process
1. Workpiece condition: clean and dry, insulation resistance and dielectric strength meet the requirements of the drawings.
2. Paint matching: When using, mix evenly according to A:B=1:1 (weight ratio), let it stand and wait for the bubbles to disappear before use, and the amount of paint should not exceed one day's dosage.
3. Workpiece preheating temperature: 120~140°C.
4. Drip paint: Drop paint on the rotating workpiece, adjust the amount of paint according to the size of the workpiece.
5. Baking temperature: 130~140°C.
6. Baking time: 75~90 minutes, when the paint film on the surface of the workpiece is smooth and non-stick, it has been completely cured.
Paint management
1. The application period after mixing the two-component of BT-116K paint is about 7 days/30 °C, and then the viscosity will gradually increase until the gel.
2. When the machine is shut down for more than 2 days, it is necessary to clean the drip paint storage tank and pipeline with X-102 cleaning agent to prevent blockage.
3. The lacquer should be stored in a dry and ventilated room below 30 °C. Avoid direct sunlight and do not approach heat or fire sources.
4. The storage period of BT-116K paint A and B components is 6 months, and the paint can continue to be used after passing the inspection for more than 6 months.
Safety
1. The thinner in the paint can irritate the skin and mucous membranes, and has a mild anesthetic effect on people, but will not cause chronic poisoning, and the maximum allowable concentration in the air in the workshop is 40mg/m3The workshop should be ventilated.
2. The skin can be washed with soap and water after contact with the paint.
3. The paint is a flammable liquid with a high flash point, and sparks should be prevented during handling, storage and use.
Inspection rules, markings, packaging, transportation and storage
1. The factory test items are items 1, 2, 3 and 4 in Table 1.
2. The product batch number is the production date of the batch of products.
3. Components A and B are packaged in iron drums of 18KG/barrel.
4. The storage period of the product is 6 months in a closed container below 30°C.
5. Others should comply with the provisions of GB/T 15022-1994.
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