A water-based anti-corrosion and aging-resistant wave-absorbing coating and its preparation method
A wave-absorbing coating and wave-absorbing layer technology, applied in the field of wave-absorbing materials, can solve the problems of limited service life of the coating, easy cracking of the coating, short service life, etc., and achieve good solvent resistance, excellent aging resistance, The effect of high powder content
Active Publication Date: 2021-07-16
青岛水性七彩新材料有限公司
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Problems solved by technology
The prepared wave-absorbing coating is coated and cured, and the reflection attenuation of the electromagnetic wave in the 2-18GHz frequency range is greater than 10dB, and the lowest reflectivity reaches -27dB, but the raw material epoxy resin used in the preparation has poor weather resistance , in the outdoor environment for a long time, the service life of the coating is limited
[0007] In order to develop a wave-absorbing material with better performance in all aspects, to further improve the wave-absorbing performance, broadband, low reflection, small mass and thin thickness, etc., it is also necessary to overcome short service life, poor corrosion resistance and coating Easy to crack and other shortcomings, therefore, there is an urgent need to provide an anti-corrosion and aging-resistant water-based wave-absorbing coating and its preparation method
Method used
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Embodiment 1-3
[0080] The different values of each parameter in Embodiment 1-3 constitute different specific embodiments, for example: parameter A 1 , B 1 、C 1 、A 2 , B 2 、C 2 、A 3 ,E 3 、H 3 etc., as shown in Table 1, Table 2 and Table 3.
[0081] A water-based anti-corrosion and aging-resistant wave-absorbing coating comprises a two-component water-based epoxy primer layer, a two-component water-based polyurethane wave-absorbing layer and a two-component water-based polyurethane topcoat layer arranged in sequence.
[0082] The preparation method of this wave-absorbing coating comprises the following steps:
[0083] (1) The preparation of two-component water-based epoxy primer layer, the values of each parameter are as shown in Table 1:
[0084] ① In parts by weight, A 1 carbon black, B 1 part titanium dioxide, C 1 parts strontium chrome yellow, D 1 Molybdenum zinc phosphate, E 1 Parts Precipitated Barium Sulfate, F 1 Parts 695W, G 1 Parts BYK012 and H 1 Parts of deioniz...
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Abstract
The invention discloses a water-based anti-corrosion and aging-resistant wave-absorbing coating and a preparation method thereof, belonging to the technical field of wave-absorbing materials. The wave-absorbing coating is mainly composed of a two-component water-based epoxy primer layer, a two-component water-based polyurethane wave-absorbing layer and a two-component water-based polyurethane topcoat layer. The preparation method includes preparing the above three coatings respectively, and then spraying them together. The bottom layer is a two-component water-based epoxy primer layer, the middle layer is a two-component water-based polyurethane wave-absorbing layer, and the uppermost layer is a two-component water-based polyurethane topcoat layer. The wave-absorbing coating obtained by the preparation method has excellent salt spray resistance, aging resistance, corrosion resistance, hardness and adhesion, and improves the service life of equipment outdoors.
Description
technical field [0001] The invention belongs to the technical field of wave-absorbing materials, and in particular relates to a water-based anti-corrosion and aging-resistant wave-absorbing coating and a preparation method thereof. Background technique [0002] With the rapid development of modern material technology, the application of microwave absorbing materials in various industries is becoming more and more extensive. A wave-absorbing material is a type of material that can absorb or greatly reduce the energy of electromagnetic waves incident on its surface, thereby reducing electromagnetic wave interference. The application of electromagnetic waves has penetrated into every corner. The application of electromagnetic technology not only brings great convenience, but also introduces serious electromagnetic radiation pollution. In terms of life, electromagnetic radiation will not only interfere with the normal physiological functions of the human body and affect human h...
Claims
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IPC IPC(8): C09D163/00C09D175/04C09D5/08C09D5/32C08G18/44
CPCC08G18/44C09D5/08C09D5/32C09D163/00C09D175/04
Inventor 徐坤徐玉华何程林徐玉俊
Owner 青岛水性七彩新材料有限公司
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