Nano-Modified Construction Panel Coating for Adhesive Strength
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Solution Overview
Problem
Existing building boards lack sufficient bending stiffness and adhesive strength, and exhibit high water absorption, which limits their performance in applications requiring improved mechanical properties and bonding with tile adhesives.
Innovation Solution
A method for producing a building board with a foamed core material coated with a liquid or pasty layer containing nano-additives such as nanosilica and carbon nanotubes, embedded reinforcement components, and a surface structure optimized for adhesive strength, applied in a range between 0.5 and 1.8 mm thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional cement-based coating with glass mesh is applied to the core, then the building board achieves basic structural integrity, but the bending stiffness and adhesive strength are insufficient
Solution Approach 1:
The patent changes the chemical composition parameters of the coating material by incorporating nano-additives (nanosilica, carbon nanotubes) into the cement-based coating. This modifies the material properties at the nanoscale, significantly enhancing the coating's mechanical strength and adhesive properties without changing the basic coating structure or application method.
Solution Approach 2:
The patent creates a composite coating material by combining traditional cement-based coating with embedded glass mesh reinforcement and nano-additives. This multi-component composite structure synergistically improves bending stiffness through the mesh, while nano-additives enhance adhesive strength and overall mechanical properties beyond what any single component could achieve alone.
2Strength
If the coating layer thickness is increased to improve mechanical properties, then bending stiffness improves, but water absorption increases
Solution Approach 1:
The patent changes the material composition parameters by adding nano-additives that modify the coating's microstructure and pore structure. This reduces water absorption at the molecular level while maintaining or enhancing mechanical strength, allowing for thinner coating applications that don't sacrifice performance.
Solution Approach 2:
The patent uses nano-additives to create a denser, more refined coating structure that effectively 'copies' the protective functions of thicker coatings at a reduced thickness. The nano-scale particles fill microvoids and create a more impermeable structure, achieving water resistance equivalent to or better than traditional thicker coatings.
3Strength
If nano-additives are incorporated into the coating material, then adhesive strength and mechanical properties are enhanced, but manufacturing complexity increases
Solution Approach 1:
The patent merges the nano-additives directly into the existing coating material formulation during normal mixing operations. This integration approach combines multiple functions (reinforcement, adhesion enhancement, water resistance) into a single material mixture step, avoiding the need for separate application processes or complex multi-step manufacturing procedures.
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 method enhances flexural strength, adhesive tensile strength, and reduces water absorption, resulting in a building board with improved mechanical properties and enhanced bonding capabilities.
Implementation Method 1
the nano additives in question are said to be able to increase the density of the structure they contain and thus contribute to improving the bond between concrete and reinforcing steel as well as between old and new concrete
Implementation Method 2
The core, which is usually several centimeters thick, usually consists of a foamed plastic, such as polystyrene or polyurethane foam
Implementation Method 3
a cement-based coating approximately 1 to 1.5 mm thick with alkali-resistant glass mesh
Data Source
AI summary
A construction panel is proposed, comprising: - a core made of foam material with a flat front side and a flat rear side opposite the front side, - at least one coating applied on at least one side of the front and rear side of the core and, in the process covering the entire surface of this at least one side with embedded reinforcement components, wherein the new construction panel is characterised in that - the at least one coating is applied to the core material in a liquid and/or paste state, - the layer thickness of the at least one coating with the embedded reinforcement components is in a range between 0.5 and 1.8 mm, - the material for forming the at least one coating contains nano-additives as components, selected from the list comprising: "nano silica" and carbon nanotubes (CNT). The invention also relates to a method for producing the proposed construction panel.