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Li-B-Si-Al-O glass system wave-transparent hydrophobic coating and preparation method thereof

A li-b-si-al-o, hydrophobic coating technology, applied in the field of glass coating, can solve the problems of poor moisture-proof performance, influence of material wave-transmitting performance, etc. Effect

Pending Publication Date: 2022-07-29
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the moisture-proof performance of fiber-reinforced wave-transparent ceramic matrix composites is poor. After the material absorbs moisture, the wave-transmitting performance of the material is affected.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation process of the wave-transmitting hydrophobic coating of the Li-B-Si-Al-O glass system of the present embodiment is as follows:

[0039] (1) Weigh 20 g of lithium silicate, 10 g of boron oxide, 30 g of LAS, and 50 mL of n-hexane, respectively, and mix at room temperature for 2 hours to obtain coating slurry A.

[0040] (2) The coating slurry A was dried at 100° C. for 0.5 h to obtain mixed powder B.

[0041] (3) Weigh 10 g of mixed powder B, add 10 mL of saturated lithium silicate solution, and mix at room temperature for 2 hours to obtain coating slurry C.

[0042] (4) Spray the coating slurry C on the surface of the quartz ceramic fiber composite material, and perform high-temperature treatment after the surface is dry. The temperature was increased to 700 °C at a heating rate of min, and the temperature was kept for 60 min.

[0043] (5) After cooling to room temperature, the sample treated at high temperature is taken out, and the preparation of the ...

Embodiment 2

[0046] The preparation process of the wave-transmitting hydrophobic coating of the Li-B-Si-Al-O glass system of the present embodiment is as follows:

[0047] (1) Weigh 18 g of lithium silicate, 11 g of boric acid, 35 g of LAS, and 60 mL of n-hexane, respectively, and mix at room temperature for 2 hours to obtain coating slurry A.

[0048] (2) The coating slurry A was dried at 100° C. for 0.5 h to obtain mixed powder B.

[0049] (3) Weigh 10 g of mixed powder B, add 8 mL of bisphenol A epoxy resin, and mix at room temperature for 2 hours to obtain coating slurry C.

[0050] (4) Brush the coating slurry C on the surface of the quartz ceramic fiber composite material, and then perform high-temperature treatment after drying. The temperature was increased to 800°C at a rate of 3°C / min and held for 60 minutes.

[0051] (5) After cooling to room temperature, the sample treated at high temperature is taken out, and the preparation of the surface hydrophobic coating is completed. ...

Embodiment 3

[0054] The preparation process of the wave-transmitting hydrophobic coating of the Li-B-Si-Al-O glass system of the present embodiment is as follows:

[0055] (1) Weigh 20 g of lithium silicate, 15 g of boric acid, 40 g of LAS, and 100 mL of acetone, respectively, and mix at room temperature for 2 hours to obtain coating slurry A.

[0056] (2) The coating slurry A was dried at 100° C. for 0.5 h to obtain mixed powder B.

[0057] (3) Weigh 15g mixed powder B, add 30mL olive oil, mix at room temperature for 30min, then add beeswax 10g, heat with water to melt completely, finally add in the mold, cool for 30min, obtain coating paste C.

[0058] (4) Brush the coating paste C on the surface of the quartz ceramic fiber composite material, and perform high-temperature treatment after the surface is dry. The high-temperature condition is to first heat up to 450 ° C, keep the temperature for 30 minutes, and the heating rate is 8 ° C / min, and then increase the temperature at the heating...

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Abstract

The invention discloses a Li-B-Si-Al-O glass system wave-transparent hydrophobic coating and a preparation method thereof, and relates to the field of glass coatings. The Li-B-Si-Al-O glass system wave-transparent hydrophobic coating is prepared from the following components in parts by mass: 30 to 40 parts of lithium aluminum silicon, 18 to 20 parts of Li2SiO3 and 10 to 15 parts of a boron source. According to the Li-B-Si-Al-O glass system wave-transparent hydrophobic coating provided by the invention, the excellent performance of lithium aluminum silicon is applied, the improvement effect of boron is supplemented, and meanwhile, hydrated lithium silicate is added to adjust the viscosity of the raw materials and cope with holes with different sizes in the surface of the material, so that the hydrophobic coating can be used for coating treatment on the surface of a fiber-reinforced wave-transparent ceramic-based composite material, and the surface of the fiber-reinforced wave-transparent ceramic-based composite material is coated with a hydrophobic coating. The condition that the wave-transparent performance of the material is reduced due to water absorption of the material is prevented.

Description

technical field [0001] The invention relates to the field of glass coatings, in particular to a wave-transmitting hydrophobic coating of a Li-B-Si-Al-O glass system and a preparation method thereof. Background technique [0002] Fiber-reinforced wave-transmitting ceramic matrix composites have excellent mechanical properties, good dielectric properties, outstanding high temperature resistance, and can realize the integration of wave transmission and heat release, and are currently one of the main material systems for the preparation of radomes. However, fiber-reinforced wave-transmitting ceramic matrix composites have poor moisture-proof properties, and the wave-transmitting properties of the materials are affected after the materials absorb moisture. Therefore, moisture-proof protection has become a problem that cannot be ignored for inorganic wave-transmitting functional materials. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a ki...

Claims

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Application Information

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IPC IPC(8): C03C6/02C04B41/85
CPCC03C1/00C04B41/85C04B41/5022C04B41/4584C04B41/4539C04B41/0072
Inventor 夏龙王鑫宇任河
Owner HARBIN INST OF TECH AT WEIHAI