Novel anti-pollution flashover coating for ultra and super high voltage insulator

A technology for antifouling flashover coatings and insulators, applied in antifouling/underwater coatings, fireproof coatings, coatings, etc., can solve the problems of uneven dispersion of added particles, poor mechanical properties, and failure to perform, so as to reduce surface tension and The effect of surface free energy, improving the level of external insulation, and increasing the degree of dispersion

Active Publication Date: 2015-11-25
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the difference in anti-fouling flashover coating formula, preparation process and filler treatment will seriously affect its hydrophobicity, pollution pressure resistance level, service life and other properties.
[0003] At present, the room temperature vulcanized silicone rubber anti-fouling flashover coatings coated on the surface of insulators generally have insufficient hydrophobicity, r

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1

[0036] A new type of high-performance anti-pollution flashover coating formulation, the components are as follows:

[0037] Room temperature vulcanized silicone rubber 50%; titanate coupling agent 10%; composite flame retardant 3%; modified composite reinforcing agent 14%; nano-TiO 2 3%; surfactant 0.8%; hexamethyldisilazane 3%; antifoaming agent 0.3%; catalyst 0.3%; crosslinking agent 0.4%; the rest is xylene.

[0038] The composite flame retardant is a mixture of nano alumina and decabromodiphenyl ether with a mass ratio of 10:1.

[0039] The surfactant is sodium laurate, the defoamer is organosilicon 100#, the catalyst is dibutyltin dilaurate, the crosslinking agent is methyl tributyl ketoxime silane, and the The solvent is xylene.

[0040] The modified composite reinforcing agent is nano SiO 2 With micron CaCO 3 The mass ratio of the mixture is 1:6, and the preparation steps are as follows:

[0041] 1. Modified SiO 2 Preparation

[0042] Take 20g SiO 2 Add 1g surfa...

Example Embodiment

[0048] Example 2

[0049] The preparation method of the new anti-pollution flashover coating for special and ultra-high voltage insulators is the same as that of Example 1, except that the weight percentage of each raw material is as follows: room temperature vulcanized silicone rubber 40%; titanate coupling agent 5%; composite flame retardant 2%; modified composite reinforcing agent 5%; nano-TiO 2 2%; surfactant 0.5%%; hexamethyldisilazane 1%%; antifoaming agent 0.2%; catalyst 0.3%; crosslinking agent 0.3%; the rest is solvent.

Example Embodiment

[0050] Example 3

[0051] The preparation method of the new anti-pollution flashover coating for special and ultra-high voltage insulators is the same as that of Example 1, except that the weight percentage of each raw material is as follows: room temperature vulcanized silicone rubber 45%; titanate coupling agent 8%; composite flame retardant 2%; modified composite reinforcing agent 12%; nano-TiO 2 2%; surfactant 0.5%; hexamethyldisilazane 1%; antifoaming agent 0.3%; catalyst 0.3%; crosslinking agent 0.4%; the rest is solvent.

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PUM

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Abstract

The invention belongs to the technical field of functional coatings and particularly relates to a novel anti-pollution flashover coating for an ultra and super high voltage insulator. The novel anti-pollution flashover coating comprises, by mass, 40%-50% of room temperature vulcanized silicone rubber, 5%-10% of titanate coupling agent, 2%-6% of composite fire retardant, 5%-12% of modified composite reinforcing agent, 2%-4% of nano TiO2, 0.5%-1% of surface active agent, 1%-5% ofhexamethyldisilazane, 0.2%-0.5% of antifoaming agent, 0.3%-0.6% of catalyst, 0.3%-0.6% of cross-linking agent and the balance solvent. The prepared anti-pollution flashover coating is sprayed on the surface of the cleaned ceramic insulator, and the coating can be used after being naturally cured for 96 hours under the condition of 25 DEG C+/-2 DEG C and 40%-70% of RH. According to the anti-pollution flashover coating, after the sprayed anti-pollution flashover coating is completely cured, the contact angle is not smaller than 135 degrees.

Description

Technical field: [0001] The invention belongs to the technical field of functional coatings, in particular to a novel anti-pollution flashover coating for special and ultra-high voltage insulators. Background technique: [0002] Pollution flashover accidents caused by serious pollution on the surface of insulators have caused huge economic losses and potential safety hazards. Coating anti-pollution flashover paint on the surface of transmission line insulators is the most commonly used and most effective anti-pollution flashover measure in domestic and foreign anti-pollution flashover technologies. However, with the change of the environment and the improvement of the external insulation level of my country's transmission lines, higher requirements are put forward for the performance of anti-pollution flashover coatings. The difference in antifouling flashover coating formula, preparation process and filler treatment method will seriously affect its hydrophobicity, pollutio...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D7/12C09D5/18C09D5/16C09C1/28C09C1/02C09C3/12
Inventor 李辛庚苏建军郭凯吉翠萍傅敏岳增武王晓明王学刚闫风洁
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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