Picture Name

Products

PRODUCT CENTER

Anti-pollution flash paint RTV-II coating
+
  • Anti-pollution flash paint RTV-II coating

Anti-pollution flash paint RTV-II coating

Anti-pollution flash coating (RTV-II) for external insulation of power equipment is a new type of electrical functional material for power systems. It is designed for the power grid and all customers who send, lose and use electricity to permanently eliminate the hidden dangers of equipment. The unique chemical composition and structure, the boulevard and the physical properties of the hot vulcanized silicone rubber, and the superior hydrophobicity and other comprehensive properties provide a new technical measure for the permanent anti-fouling of electric porcelain equipment.

Category: Product Center

Key words: equipment


Product Description

Anti-pollution flash coating (RTV-II) for external insulation of power equipment is a new type of electrical functional material for power systems. It is designed for the power grid and all customers who send, lose and use electricity to permanently eliminate the hidden dangers of equipment. The unique chemical composition and structure, the boulevard and the physical properties of the hot vulcanized silicone rubber, and the superior hydrophobicity and other comprehensive properties provide a new technical measure for the permanent anti-fouling of electric porcelain equipment.
Product Features
The special chemical composition and structure of this product and the application of modern polymer process technology make it have the following characteristics:
Excellent water repellency and fast, balanced, long-lasting hydrophobic migration, high resistance to flashover;
Excellent electrical insulation, electrical corrosion resistance up to TMA4.5, flame retardancy up to FV-0, anti-arcing, can effectively protect electric porcelain equipment from damage under abnormal conditions;
High modulus, high strength, strong adhesion, acid, alkali, salt and strong oxidant corrosion, good oil resistance;
UV-resistant, ozone-resistant, resistant to environmental erosion, no skin, no cracking, no cleaning during normal maintenance period;
Forming on the spot, easy to use, meeting the needs of on-site anti-fouling technical measures for power transmission and transformation equipment;
The anti-fouling product has good self-cleaning property, and the anti-icing product of the transmission equipment has good anti-icing and deicing effects.
Application range
This product is mainly used for power system substation and transmission line insulators, power plant and power user substation equipment and other electrical equipment for external insulation and anti-pollution flash. After using this product on the insulator, a composite insulator with porcelain (or glass) as the skeleton is formed, which is a reliable configuration scheme for improving the external insulation of the power transmission and transformation equipment.
Applicable to ambient temperature -50 °C ~ 100 °C, various voltage grade AC and DC systems, substation and overhead transmission line equipment operating under pollution conditions, external insulation and anti-fouling, prevent flashover, improve the external insulation level of equipment.
Instructions
It is recommended that the product be coated by construction workers who have obtained professional construction qualifications in the event of power failure;
The surface of the insulator shall be cleaned before application, and there shall be no dust, wax, oil, etc., and the surface shall be determined to be dry;
It can be applied by spraying or brushing, etc. Construction should be carried out in sunny weather;
The thickness of the coating is 0.4~0.6mm, the coating should be complete, no defects, and no dripping and hanging.
Persistent in-situ forming anti-soil flash coating (PRTV) technical parameters for external insulation of power equipment
Project Standard value Typical test value Testing method
Visual inspection No mechanical impurities and flocs, the coating should be smooth, smooth and free of air bubbles Viscous liquid, free of impurities and floes, smooth coating and no bubbles DL/T627
Vulcanization time Surface dry   min ≯45 35 GB 6753.2
Intrinsic dry   h ≯72 62
Viscosity            s ≮80 108 GB/T 1723
Dielectric strength kV/mm ≮18 24.8 GB/T 1408.1
Adhesion Shear strength MPa ≮3.0 4.19 GB/T 13936
Circle method ≯2 1 GB/T1720
Hydrophobic test Hydrophobicity and grading Qav≥100  °Qmin≥90°  HC1~2 HC1 DL/T 864
Loss of characteristics 96h Qav≥90°  Qmin≥85°  HC3~4 No loss
Recovery characteristics t≤24h Revert to HC1 within 24h
Drowning migration characteristics 96h Qav≥110° Qmin≥100° HC2~3 Hydrophobicity reached HC1 at 14 h
Flammability test FV-0 level FV-0 level GB/T 10707
Self-cleaning test ≯2 level 1 level DL/T 627
Tear strength and elongation at break Strength MPa ≮4.0 4.24 GB/T 528
Elongation % ≮250 337
Tear strength kN/m ≮9 10.1 GB/T 529
Volume resistivity Ω•m ≮1.0×1012 7.18×1014 GB/T 1692
Relative dielectric constant dielectric loss tangent ≯4.0 2.7 GB/T 1409
≯0.4% 0.29
Resistance to tracking and erosion AC   ≮TMA 4.5 1A 4.5 GB/T 6553
DC   ≮TMA 3.5 1A3.5
Wear resistance        g ≯0.2 0.18 GB/T 1789
Corrosion resistance test Acid, alkali, salt 25℃ 24h No wrinkles, shedding, blistering, discoloration, etc., adhesion is not lower than level 2 No wrinkles, shedding, blistering, discoloration, adhesion is 1 GB/T9274
Transformer oil 100℃ 24 h No wrinkles, shedding, foaming, etc., adhesion is not lower than level 2 No wrinkles, shedding, blistering, adhesion is level 1
Stain resistance test U1 (with coating) / U2 (without coating) ≥ 2.0 U1 /U2 =2.01 GB/T 4585.1
1700 h salt spray test Sample no more than 3 overcurrent interruptions After 1800h, no overcurrent interruption GB/T 5892
Q/HGH 019
No leakage, no corrosion, no enamel No leakage, no damage to the glazed surface
Drowning migration characteristics HC2~3 HC1~2 level
Bonding with enamel shear ≥3.0MPa 3.5 MPa
5000 h artificial accelerated aging test The sample does not exceed 3 times in overcurrent No overcurrent protection action occurred State Grid Jianyun [2006] 1022
The sample does not produce traces of leakage The coating is complete and no leakage is found
Impact breakdown voltage test
The test piece should have no breakdown or insulation
damage
The sample has no breakdown  GB/T20642,
DL/T627-2012
Appendix C