Silane-Coated Antifouling Composite for Durable Dustproof Surfaces

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Solution Overview

Problem

Existing antifouling technologies fail to provide long-lasting protection against the deposition of suspended particulate matter and liquid substances on fibrous structures, as they are easily washed away or become charged, leading to reduced effectiveness over time.

Innovation Solution

An antifouling composite material is developed with a substrate coated in silane monomer-treated inorganic fine particles, where the binder component is within a specific mass range, preventing triboelectrification and ensuring the particles are firmly bonded, thus maintaining dustproof and antifouling properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional antifouling treatments (detergents, water-repellents, resin binders) are applied to fibrous structures, then initial dustproof and antifouling effects are achieved, but the treatments are easily washed away or become charged by friction, causing the antifouling effect to diminish over time

Engineering Contradiction:

Improveantifouling effectVSAvoiddurability of antifouling treatment

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The invention uses a composite material system consisting of inorganic fine particles (such as silica or alumina) coated with silane monomer having an unsaturated bond, combined with a polymerization initiator and polymerizable monomer. This composite structure provides both the antifouling properties from the inorganic particles and durable bonding through polymerization, resolving the contradiction between initial effectiveness and long-term durability.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The invention changes the chemical state of the coating by using silane monomer that can undergo polymerization. The unsaturated bonds in the silane monomer allow for cross-linking and forming a durable polymer network that resists washing and friction, while the inorganic particle coating maintains the antifouling effect. This parameter change from simple coating to polymerized composite ensures long-lasting performance.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If inorganic fine particles are used to prevent deposition of suspended particulate matter, then dustproof effect is improved, but without proper bonding the particles are not firmly attached and the treatment loses effectiveness

Engineering Contradiction:

Improvedustproof effectVSAvoidbonding strength of particle layer

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The invention replaces simple mechanical adhesion with chemical bonding through polymerization. The polymerizable monomer and initiator system creates covalent bonds that firmly attach the inorganic fine particles to the substrate, providing both strong bonding and maintaining the dustproof effect from the particle coating.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The silane monomer with unsaturated bond acts as an intermediary between the inorganic fine particles and the polymerizable monomer. It coats the particle surfaces and provides reactive groups for polymerization, creating strong bonds while maintaining particle dispersion and antifouling properties.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The composite material effectively prevents the deposition of particulate matter and liquid substances, allowing for easy removal and maintaining durability and effectiveness over time, even under friction and washing.

Implementation Method 1

the inorganic fine particles being coated with silane monomer each having an unsaturated bond... preventing triboelectrification

Methodology Applied

Scientific EffectTriboelectric effect: Triboelectric Effect

Implementation Method 2

an inorganic fine particle layer disposed on a surface of the substrate... the content of the binder component in the inorganic fine particle layer is in the range of 0.1% by mass to 40% by mass to the content of the inorganic fine particles

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS8349447B2Antifouling composite material

Publication Date: 2013.01.08 NBC MESHTEC

AI summary

An inorganic fine particle layer containing inorganic fine particles and a binder component is formed on a surface of a substrate by chemical bonding. The inorganic fine particles are coated with silane monomer each having an unsaturated bond. The content of the binder component is in the range of 0.1% by mass to 40% by mass to the content of the inorganic fine particles.