Anti-dusting wave-transparent aerogel, and preparation method and application thereof
An airgel and wave-transmitting technology, applied in gel preparation, chemical instruments and methods, colloid chemistry, etc., can solve the problems of cumbersome operation, reduced wave-transmitting performance, and not suitable for mass production, etc., and achieve the effect of simple operation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0026] In a first aspect, the present invention provides a method for preparing an anti-powder drop-off wave-transmitting aerogel, the method comprising the following steps:
[0027] (1) The wave-transparent fiber preform is impregnated with the sol, and then undergoes an aging step, a solvent replacement step, a supercritical drying step, and a hydrophobizing treatment step in order to obtain a wave-transparent aerogel;
[0028] (2) The surface of the wave-transparent aerogel obtained in step (1) is coated with three anti-adhesives to prepare an anti-powder drop-off wave-transparent aerogel (an anti-powder drop-off wave-transparent airgel material).
[0029] According to some preferred embodiments, in step (2), the conformal coating is DC3-1953 conformal coating; in the present invention, DC3-1953 conformal coating is also referred to as DC3-1953 conformal coating.
[0030] As we all know, solvent-free conformal coating DC3-1953 is generally coated on circuit boards or semico...
Embodiment 1
[0044] A preparation method of anti-powder drop-off wave-permeable airgel, the steps are as follows:
[0045] ①Weigh 20wt% alkaline silica sol, add 1mol / L hydrochloric acid and 4mol / L ammonium fluoride in sequence, and stir evenly to obtain silica sol, wherein, alkaline silica sol:hydrochloric acid:ammonium fluoride=100:3: 3 (mass ratio).
[0046] ②Put the wave-transparent quartz fiber preform into the sealed mold, and inject the silica sol obtained in step ① into the mold through vacuum injection and pressure injection, so that the quartz fiber preform is fully impregnated with the silica sol to obtain an impregnated body.
[0047] ③ Place the impregnated body obtained in step ② to age at room temperature for 24 hours, and then age at 70°C for 48 hours to obtain a wet gel.
[0048] ④ Remove the wet gel obtained in step ③ from the mold, and immediately put it into absolute ethanol for replacement. After 96 hours of replacement, replace with new absolute ethanol, continue the...
Embodiment 2
[0054] A preparation method of anti-powder drop-off wave-permeable airgel, the steps are as follows:
[0055] ①Weigh 20wt% alkaline silica sol, add 1mol / L hydrochloric acid and 4mol / L ammonium fluoride in sequence, and stir evenly to obtain silica sol, wherein, alkaline silica sol:hydrochloric acid:ammonium fluoride=100:3: 3 (mass ratio).
[0056] ②Put the wave-transparent quartz fiber preform into the sealed mold, and inject the silica sol obtained in step ① into the mold through vacuum injection and pressure injection, so that the quartz fiber preform is fully impregnated with the silica sol to obtain an impregnated body.
[0057] ③ The impregnated body obtained in step ② was left to age at room temperature for 48 hours, and then aged at 70°C for 24 hours to obtain a wet gel.
[0058] ④ Remove the wet gel obtained in step ③ from the mold, and immediately put it into absolute ethanol for replacement. After 144 hours of replacement, replace with new absolute ethanol, continu...
PUM
| Property | Measurement | Unit |
|---|---|---|
| porosity | aaaaa | aaaaa |
| dielectric loss | aaaaa | aaaaa |
| dielectric loss | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More