Fluorine-Containing Top Layer Adhesion to Concrete Substrate

Solution Overview

Problem

Existing concrete substrate-containing laminates face issues with insufficient adhesion and water resistance, particularly in the top layer, leading to potential flaking and damage.

Innovation Solution

A laminate structure comprising a concrete substrate, a primer layer with cured epoxy or urethane resin, a reinforcing layer with urea, urethane, or urethane urea resin, and a fluorine-containing top layer with a specific fluorine content range, including fluorinated polymers, enhances adhesion and water resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the fluorine content in the top layer is increased to improve water resistance, then water resistance is improved, but adhesion of the top layer deteriorates

Engineering Contradiction:

Improvewater resistanceVSAvoidadhesion of top layer

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent applies parameter changes by precisely controlling the fluorine content within the range of 5-55 mass% to achieve optimal balance between water resistance and adhesion. This quantitative parameter optimization resolves the contradiction by identifying the specific fluorine content range where both properties are satisfied simultaneously

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials by combining fluorinated polymers with specific resin systems (epoxy, urethane, urea, or urethane urea resins) in the top layer. This composite approach allows the fluorinated polymer to provide water resistance while the resin matrix maintains adhesion to the reinforcing layer

Inventive Principle:

Principle #40Composite materials

2Strength

If the fluorine content in the top layer is decreased to improve adhesion, then adhesion is improved, but water resistance deteriorates

Engineering Contradiction:

Improveadhesion of top layerVSAvoidwater resistance

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The patent applies parameter changes by precisely controlling the fluorine content within the range of 5-55 mass% to achieve optimal balance between water resistance and adhesion. This quantitative parameter optimization resolves the contradiction by identifying the specific fluorine content range where both properties are satisfied simultaneously

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials by combining fluorinated polymers with specific resin systems (epoxy, urethane, urea, or urethane urea resins) in the top layer. This composite approach allows the fluorinated polymer to provide water resistance while the resin matrix maintains adhesion to the reinforcing layer

Inventive Principle:

Principle #40Composite materials

3Reliability

If the top layer composition is optimized for water resistance, then water resistance is improved, but top layer adhesion deteriorates

Engineering Contradiction:

Improvewater resistanceVSAvoidadhesion of top layer

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent applies parameter changes by precisely controlling the fluorine content within the range of 5-55 mass% to achieve optimal balance between water resistance and adhesion. This quantitative parameter optimization resolves the contradiction by identifying the specific fluorine content range where both properties are satisfied simultaneously

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials by combining fluorinated polymers with specific resin systems (epoxy, urethane, urea, or urethane urea resins) in the top layer. This composite approach allows the fluorinated polymer to provide water resistance while the resin matrix maintains adhesion to the reinforcing layer

Inventive Principle:

Principle #40Composite materials

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 laminate achieves improved adhesion and high water resistance, with the fluorine content optimizing compatibility between layers and leveraging water repellency for enhanced durability.

Implementation Method 1

a top layer containing fluorine... the fluorine content in the top layer is more than 5 mass % and 55 mass % or less

Methodology Applied

Scientific EffectHydrophobe: Hydrophobe

Implementation Method 2

the primer layer comprises at least one selected from the group consisting of a cured epoxy resin product and a urethane resin

Methodology Applied

Scientific EffectChemical Bonding: Chemical Bonding

Implementation Method 3

the primer layer comprises at least one selected from the group consisting of a cured epoxy resin product and a urethane resin

Methodology Applied

Scientific EffectCohesion: Cohesion

Data Source

PatentUS20250206982A1laminate

Publication Date: 2025.06.26 AGC INC

AI summary

Provided is a laminate with good top layer adhesion and high water resistance. The laminate of the present invention includes a concrete substrate, a primer layer, a reinforcing layer and a fluorine-containing top layer in order of mention, wherein the primer layer contains a component selected from the group consisting of a cured epoxy resin product and a urethane resin, wherein the reinforcing layer contains a resin selected from the group consisting of a urea resin, a urethane resin and a urethane urea resin, and wherein the fluorine content in the top layer is more than 5 mass % and 55 mass % or less.