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Novel nano TiO2/PTFE hybrid fluorocarbon paint applied for resisting pollution flashover of insulators, and preparation method thereof

A fluorocarbon coating and anti-pollution flashover technology, applied in the direction of coating, etc., can solve the problems of PTFE materials that cannot be bonded at the interface of the coating and cannot be cured at room temperature, etc., and achieve the effect of improving the interface bonding ability and improving the comprehensive performance.

Active Publication Date: 2013-07-31
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single PTFE material cannot be bonded to the coating interface without complex surface activation and cannot be cured at room temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0039] The raw materials of the following examples are purchased from the following manufacturers respectively:

[0040] Fluorocarbon resin: Daikin Fluorochemical (Guangzhou) Branch; Fluorosilane modifier: Harbin Xuefujia Silicon Chemical Co., Ltd.; Rutile nano-TiO 2 : Wuxi Tuoboda Titanium Dioxide Products Co., Ltd.; defoamer (auxiliary): Jucheng Zhaoye Organic Silicon Raw Material Co., Ltd.; dispersant FC-4430 (auxiliary): Shanghai Xianglan Chemical; curing agent (HDI tripolymer Body N3390): Huizhou Leibo Chemical; catalyst (dibutyltin dilaurate): Xuejia Fluorosilicon Chemical Co., Ltd.; absolute ethanol: commercially available; butyl acetate: commercially available; MIBK: commercially available.

[0041] Fluorosilane Modified Hydrophobic Rutile Nano-TiO 2 The modification method is as follows:

[0042] Mix absolute ethanol and distilled water evenly, then add fluorosilane modifier dropwise, stir, mix evenly, add rutile nano-TiO 2 , where the mass ratio of each component ...

Embodiment 1

[0043] Example 1 New nano-TiO 2 / PTFE hybrid antifouling flashover coating

[0044] Fluorocarbon resin 40kg

[0045] Rutile nano-TiO 2 6kg

[0046] Fluorosilane modifier 2kg

[0047] Absolute ethanol 15kg

[0048] Distilled water 5kg

[0049] Polytetrafluoroethylene nano powder (PTFE) 12kg

[0050] Butyl acetate 24kg

[0051] Methyl isobutyl ketone (MIBK) 12kg

[0052] Dispersant 2kg

[0053] Defoamer 1kg

[0054] Catalyst 1kg

[0055] Curing agent 80kg

[0056] The coating preparation method is:

[0057] (1) Mix absolute ethanol and distilled water evenly, then add fluorosilane modifier dropwise, stir, mix evenly, add rutile nano-TiO 2 , wherein the mass ratio of each component is fluorosilane modifier: absolute ethanol: distilled water: rutile nano-TiO2 is 1:7.5:2.5:3, ultrasonically dispersed at room temperature for 3~4h, filtered, and cleaned with absolute ethanol , dried completely in a vacuum oven at 55-90°C, and ground into small particles...

Embodiment 2

[0063] Example 2 New nano-TiO 2 / PTFE hybrid antifouling flashover coating

[0064] Fluorocarbon resin 40kg

[0065] Rutile nano-TiO 2 12kg

[0066] Fluorosilane modifier 4.5kg

[0067] Anhydrous ethanol 30kg

[0068] Distilled water 10.5kg

[0069] Polytetrafluoroethylene nano powder (PTFE) 10kg

[0070] Butyl acetate 20kg

[0071] Methyl isobutyl ketone (MIBK) 10kg

[0072] Dispersant 2kg

[0073] Defoamer 1kg

[0074] Catalyst 1kg

[0075] Curing agent 80kg

[0076] The coating preparation method is:

[0077] (1) Mix absolute ethanol and distilled water evenly, then add fluorosilane modifier dropwise, stir, mix evenly, add rutile nano-TiO 2 , where the mass ratio of each component is fluorosilane modifier: absolute ethanol: distilled water: rutile nano-TiO 2 1.5:10:3.5:4, ultrasonically dispersed at room temperature for 3~4h, filtered, cleaned with absolute ethanol, completely dried in a vacuum oven at 55~90°C, ground into small particles in ...

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Abstract

The invention discloses a novel nano TiO2 / PTFE hybrid fluorocarbon paint applied for resisting pollution flashover of insulators. The paint is composed of a component 1 and a component 2, wherein the component 1 comprises the following components by weight parts: 10-65 parts of fluorocarbon resin, 3-20 parts of rutile-type nanometer TiO2, 0.75-5 parts of a silicon fluoride modifier, 10-25 parts of polytetrafluoroethylene nanometer powder, 0.5-5 parts of an auxiliary agent, 20-45 parts of a mixed solvent, 0.01-0.5 parts of a catalyst; and the component 2 comprises the following components by weight parts: 50-100 parts of a curing agent, and 0-50 parts of a mixed solvent. The invention further discloses a preparation method of the fluorocarbon paint. The fluorocarbon paint is quite good in weatherability, soiling resistance, aging resistance and chemical resistance, good in surface energy, and good in bonding capability of a surface and a base material, and can effectively improve safe and reliable operation level of electrical devices.

Description

technical field [0001] The invention relates to a fluorocarbon coating, in particular to a novel nano-TiO applied to insulators for anti-pollution flashover 2 / PTFE hybrid fluorocarbon coating. The invention also relates to a preparation method of the fluorocarbon paint. Background technique [0002] With the rapid development of industry and the continuous expansion of power station capacity, the requirements for safe operation of power grids are becoming more and more stringent. Porcelain insulators are important accessories in high-voltage power transmission and transformation equipment, and pollution flashover accidents of insulators in power systems have become increasingly prominent. There are four traditional anti-pollution flashover technical countermeasures in power systems: creep adjustment, synthetic insulators, cleaning and coating anti-pollution flashover coatings. The operation experience shows that the climbing adjustment is limited by the structure of the t...

Claims

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Application Information

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IPC IPC(8): C09D127/12C09D127/18C09D7/12
Inventor 周永言周艺李丽朱志平盘思伟钟娴唐念
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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