Study on Preparation and Performance of HNTs-Reinforced SiO<sub>2</sub> Aerogel Superhydrophobic Coatings
Bibliographic record
Abstract
Superhydrophobic thermal insulation coatings can significantly reduce energy consumption and effectively protect substrates from contamination and damage caused by oil， mold， and other pollutants.However， traditional superhydrophobic thermal insulation coatings are limited in their application across multiple fields due to defects such as poor mechanical properties， complex processing， and high thermal conductivity.To address this， a novel composite aerogel with an HNTs/SiO2 ball-stick network structure was prepared using the sol-gel method， with tetraethyl orthosilicate (TEOS) as the silicon source and halloysite nanotubes (HNTs) as the reinforcing phase， followed by CO2 supercritical drying.After grinding the composite material to a specific fineness， it was uniformly mixed with an aqueous polyurethane dispersion and a low-surface-energy substance， 1H，1H，2H，2H-perfluorodecyltriethoxysilane.This mixture was sprayed onto the substrate surface， and after curing， a wear-resistant superhydrophobic thermal insulation coating was formed.The structure was characterized by Fourier-transform infrared spectroscopy (FT-IR)， the microstructure and wettability of the coating were analyzed using scanning electron microscopy (SEM) and contact angle analyzer (DCA)， and the coating's wear resistance and thermal insulation properties were tested.Results showed that HNTs were successfully grafted and modified， and the HNTs/SiO2 composite aerogel exhibited a porous structure， creating a micro - and nanoscale hierarchical rough structure.When the HNTs content was 25%(mass fraction)， the resulting coating had a water contact angle of 160.8°， a rolling angle of 3.1°， and a thermal conductivity of 0.045 W/(m·K).After 20 wear cycles， the water contact angle remained at 152.5°，indicating its applicability to various soft and hard substrates.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".