Preparation method of hydrophobic material for antenna housing surface and application of hydrophobic material

A hydrophobic material and radome technology, which is applied in applications, household appliances, household components, etc., can solve the problems of low hydrophobic performance and poor weather resistance of hydrophobic materials, and achieve low surface energy, improved hydrophobic performance, and improved aging resistance. Effect

Active Publication Date: 2018-11-20
HARBIN TOPFRP COMPOSITE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor weather resistance and low hydrophobicity of the hydrophobic material on the surface of the radome, and provide a preparation method for the hydrophobic material on the surface of the radome and use it to prepare a hydrophobic coating

Method used

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  • Preparation method of hydrophobic material for antenna housing surface and application of hydrophobic material
  • Preparation method of hydrophobic material for antenna housing surface and application of hydrophobic material

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specific Embodiment approach 1

[0024] Specific Embodiment 1: The method for preparing the hydrophobic material on the surface of the radome according to this embodiment is implemented in the following steps:

[0025] 1. Silane coupling agent modified nano-SiO 2 :

[0026] a. The dried Nano-SiO 2 Added to ethanol solution, obtained SiO after ultrasonic dispersion 2 Dispersions;

[0027] b. According to the volume ratio of 1:1, mix the oxalic acid solution with pH=3~4 and absolute ethanol evenly, add γ-methacryloxypropyltrimethoxysilane (KH-570 silane coupling agent), Magnetically stir evenly, then add to SiO 2 In the dispersion liquid, the modified SiO 2 mixed solution;

[0028] C, the modified SiO that step b obtains 2 The mixed solution was stirred and reacted in a constant temperature water bath at 70-80°C for 3-5 hours to obtain modified SiO 2 reactive emulsion;

[0029] d. For modified SiO 2 The reaction emulsion is subjected to centrifugation and ultrasonically cleaned several times with etha...

specific Embodiment approach 2

[0035] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the Nano-SiO in step a 2 The particle size is 7-15nm.

specific Embodiment approach 3

[0036] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the ethanol solution in step a is mixed according to the volume ratio of absolute ethanol and deionized water as 3:1.

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Abstract

The invention discloses a preparation method of a hydrophobic material for an antenna housing surface and application of the hydrophobic material and relates to the preparation method and the application of the hydrophobic material. The problem that a hydrophobic material on the surface of a radar antenna housing is low in weather resistance and low in hydrophobic property is solved. The preparation method comprises the following steps: 1, modifying nano SiO2 by a silane coupling agent, namely uniformly mixing an oxalic acid solution and absolute ethyl alcohol, adding a KH-570 silane couplingagent, adding into SiO2 dispersion, reacting at a temperature of 70-80 DEG C, and performing vacuum drying to obtain the modified Nano-SiO2 powder; and 2, preparing resin, namely adding vinyl polytetrafluoroethylene into butyl acetate dispersion of the modified Nano-SiO2. The hydrophobic material is applied to the surface of the antenna housing to prepare a hydrophobic coating. The hydrophobic material applied to the surface of the antenna housing prepared in the invention has a static hydrophobic angle of more than 120 degrees, and after the artificial 1000 h weathering test, the hydrophobicangle is more than 110 degrees.

Description

technical field [0001] The invention relates to a method for preparing a hydrophobic material and the application of the hydrophobic material to prepare a hydrophobic coating on the surface of a radome. Background technique [0002] The radar radome directly covers the surface of the antenna, which not only protects the normal operation of the radar antenna system, but also has excellent electromagnetic wave penetration performance. It is an important component for protecting the radar system. The reliability of the antenna, in which the hydrophobic performance of the surface of the radome is very important, because the transmission loss of the antenna mainly depends on the thickness of the water film on its surface in rainy and snowy weather, and the increase in loss is proportional to the thickness of the water film. The hydrophobic surface of the radome significantly improves the performance index of system transmission loss and noise temperature, and the hydrophobicity o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D7/62C09D7/63C08L67/06C08K7/00C08K7/08B29C33/62B29C70/48
CPCB29C33/62B29C70/48B29L2031/3456C08K7/00C08K7/08C08K2201/011C09D127/18C09D7/62C09D7/63C08K9/06C08K3/36C08K5/29C08L67/06
Inventor 杨剑宇于福斌孙宝华张东兴白鹏程白贺唐亮王玉玲
Owner HARBIN TOPFRP COMPOSITE
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