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A kind of WPU/PTFE composite hydrophobic coating and preparation method thereof

A hydrophobic coating, PTFE technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of penetration into the coating, damage to the coating, poor hydrophobicity, etc., to achieve strong coating applicability, simple preparation process, cost low effect

Active Publication Date: 2021-06-15
STATE GRID NINGXIA ELECTRIC POWER CO +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hydrophobic coating material to solve the problem of poor hydrophobicity of ordinary coating materials, water is easy to spread on the surface, penetrates into the interior of the coating, and destroys the coating; this coating can reduce the formation of water droplets on the surface of high-voltage lines and distortion, reducing corona discharge on high voltage lines

Method used

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  • A kind of WPU/PTFE composite hydrophobic coating and preparation method thereof
  • A kind of WPU/PTFE composite hydrophobic coating and preparation method thereof
  • A kind of WPU/PTFE composite hydrophobic coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Step 1. Add 1% silane coupling agent to the PTFE emulsion, stir for 20 minutes, then add the PTFE with the coupling agent into the water-based polyurethane in a certain proportion, and the mass ratio of water-based polyurethane to polytetrafluoroethylene is 6:4 , and stirred for 20 minutes.

[0029] Step 2. Evenly coat the paint prepared in step 1 on the surface of the substrate to be painted (such as the surface of the electric power line). The thickness depends on the requirements, generally 0.2mm. Place it at room temperature for 1 hour, and wait for it to dry naturally and stop flowing. After drying in an exothermic heating box for 0.3 hours, take it out after cooling with the furnace.

Embodiment 2

[0031] Step 1. Add 1% silane coupling agent to the PTFE emulsion, stir for 25 minutes, then add the PTFE with the coupling agent into the water-based polyurethane in a certain proportion, and the mass ratio of water-based polyurethane to polytetrafluoroethylene is 6:4 , and stirred for 25 minutes.

[0032] Step 2. Apply the paint prepared in step 1 evenly on the surface of the substrate to be painted (such as the surface of the electric power line). The thickness depends on the requirements, generally 0.25mm. Place it at room temperature for 1.5 hours, and wait for it to dry naturally and stop flowing. After drying in an exothermic heating box for 0.5 hour, take it out after cooling with the furnace.

Embodiment 3

[0034] Step 1. Add 0.08% silane coupling agent to the PTFE emulsion, stir for 30 minutes, then add the PTFE with the coupling agent into the water-based polyurethane in a certain proportion, and the mass ratio of water-based polyurethane to polytetrafluoroethylene is 6:4 respectively , and stirred for 30 minutes.

[0035] Step 2. Evenly coat the paint prepared in step 1 on the surface of the substrate to be painted (such as the surface of the electric power line). The thickness depends on the requirements, generally 0.3mm. Place it at room temperature for 2 hours, and wait for it to dry naturally and stop flowing. After drying in an exothermic heating box for 1 hour, take it out after cooling with the furnace.

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Abstract

The invention discloses a WPU / PTFE composite hydrophobic coating and a preparation method thereof, comprising the following steps: adding a silane coupling agent to a PTFE emulsion, stirring and treating, then adding the PTFE emulsion added with the coupling agent to water-based polyurethane, and stirring Prepare the paint emulsion uniformly; apply the prepared paint emulsion evenly on the surface of the substrate to be painted, air-dry at room temperature, and dry it in an exothermic heating box after it stops flowing, take it out after cooling with the furnace, and prepare WPU / PTFE composite hydrophobic coating. The preparation process of the invention is simple, the cost is low, there is no strict requirement on basic materials, and the coating has strong applicability, and can be applied not only to the surface anti-corona of high-voltage lines, but also to the waterproofing of the surface of electrical equipment. It can be applied to the surface of anti-corrosion and hydrophobic materials, especially for the anti-corona discharge on the surface of electric power lines, which has a great application prospect.

Description

technical field [0001] The invention belongs to the field of surface engineering, relates to a material for preparing a hydrophobic coating, and also relates to a method for preparing the hydrophobic coating. Background technique [0002] On rainy days, the water droplets on the surface of the high-voltage wires are distorted under the action of the electric field, which ionizes the air and generates corona. The corona consumes more electric energy, and also causes discharge and noise, forming noise pollution and affecting the residents around the high-voltage wires. The health of the cracked high-voltage wires is generally exposed aluminum wires. When passing through areas with environmental pollution, the high-voltage wires will corrode, which will affect the service life of the high-voltage wires. [0003] Most of the hydrophobic coatings are oil-based coatings. Oil-based coatings are easy to volatilize flammable gases during preparation, storage and use, and there are gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D127/18C09D7/63
CPCC09D175/04C09D7/63C08L27/18C08K5/54
Inventor 郭微刘志远张军吴健何楷陈海军刘博刘岩亮白晓春耿明昕赵亚林韩文潘晓彤杨彬景龑鞠学良
Owner STATE GRID NINGXIA ELECTRIC POWER CO