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Related Concept Videos

Waterproofing and Anti-Bacterial Admixtures in Concrete01:22

Waterproofing and Anti-Bacterial Admixtures in Concrete

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Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
77
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  11. Solvent-free And Uv-cured Epoxy Silicone Coating With Excellent Wear Resistance And Antismudge Properties

Solvent-Free and UV-Cured Epoxy Silicone Coating with Excellent Wear Resistance and Antismudge Properties

Jialong Zhu1, Hong Fan1, Jintao Wan2

  • 1State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, P. R. China.

ACS Applied Materials & Interfaces
|June 26, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

This study introduces a novel, solvent-free UV-cured coating using fluorinated epoxy silicone resin and triepoxy siloxane. The resulting material offers exceptional transparency, hardness, flexibility, and anti-smudge properties for advanced coating applications.

Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Surface Engineering

Background:

  • Traditional multifunctional coatings often rely on organic solvents, posing environmental and health concerns.
  • Developing solvent-free, high-performance coatings is crucial for sustainable material development.
  • Existing coatings may compromise on properties like hardness, flexibility, or transparency when avoiding solvents.

Purpose of the Study:

  • To develop a transparent, hard, flexible, and multifunctional coating using a solvent-free, UV-cured system.
  • To investigate the structure-property relationships of a novel coating formulation based on fluorinated epoxy MTQ silicone resin and branched triepoxy siloxane.
  • To demonstrate the anti-smudge and wear-resistant capabilities of the developed coating.

Main Methods:

Keywords:
anti-smudgehard yet flexiblehigh transparentsolvent-free

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  • Formulation of a UV-curable coating using fluorinated epoxy MTQ silicone resin and branched triepoxy siloxane as a reactive diluent.
  • UV-initiated ring-opening polymerization in the presence of a triarylsulfonium hexafluoroantimonate catalyst.
  • Characterization of the cured coating's properties, including transparency, pencil hardness, flexibility, surface roughness, and water contact angle after abrasion testing.

    • Main Results:

    • The solvent-free coating achieved high transparency (∼92%), excellent pencil hardness (7H), and remarkable flexibility (1 mm bending diameter).
    • The formulation exhibited a smooth surface (Rq = 0.46 nm) and anti-smudge properties due to perfluorinated chains.
    • The coating maintained a water contact angle >90° after 3000 abrasion cycles, indicating superior wear resistance.

    Conclusions:

    • The developed UV-cured coating offers a promising, sustainable alternative to solvent-based systems for high-performance applications.
    • The combination of fluorinated epoxy MTQ silicone resin and triepoxy siloxane enables the creation of robust, multifunctional coatings.
    • This approach facilitates the production of coatings with excellent optical, mechanical, and surface properties with reduced environmental impact.
    super smooth
    wear resistance