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Biomimetic Nanoporous Transparent Universal Fire-resistant Coatings.

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Biomimetic Nanoporous Transparent Universal Fire-resistant Coatings.

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Biomimetic Nanoporous Transparent Universal Fire-Resistant Coatings.

Lin Zhang¹, Ai-Ning Zhang¹, Shuang-Mei He¹

¹The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China.

ACS Applied Materials & Interfaces

|April 5, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

This study developed a transparent flame-retardant coating using a moth-eye inspired nanoporous structure. The innovative coating offers excellent fire protection and high transparency for various materials.

Keywords:

biomimetic nanoporous structure breathability fire resistance transparent coating universal protectiveness

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Area of Science:

Materials Science
Polymer Chemistry
Nanotechnology

Background:

Polymeric materials present significant fire hazards due to their flammability.
Developing transparent flame-retardant coatings is crucial for safety but technically challenging.
Existing solutions often compromise transparency or protective efficacy.

Purpose of the Study:

To design a universal flame-retardant protective coating with high transparency.
To investigate the fire-fighting performance and mechanical properties of the novel coating.
To demonstrate the coating's applicability on diverse substrates.

Main Methods:

Fabrication of a nanoporous coating structure inspired by the moth-eye effect.
Utilizing hydrophilic-hydrophobic interactive assembly with phosphoric acid protonated amino siloxane.

Characterization of optical properties (transparency, water vapor transmittance) and fire-fighting performance.

Evaluation of mechanical properties on various flexible and rigid substrates.

Main Results:

The coating achieved >97% visible light transparency and 96% water vapor transmittance.
Synergistic effects of phosphorus (P), nitrogen (N), and silicon (Si) enhanced char formation and restricted substrate decomposition.
The coating exhibited robust adhesion and excellent fire-fighting performance on fabrics, foams, paper, and wood.
Coated samples, both flexible and rigid, demonstrated superior mechanical properties.

Conclusions:

A novel moth-eye inspired nanoporous coating effectively combines flame retardancy and high transparency.
The coating's formulation and structure provide robust fire protection and maintain material integrity.
This research offers a new strategy for designing advanced protective coatings with dual functionality.