One-Component Polyurethane Resin for Concrete Tile Detachment
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Solution Overview
Problem
Existing methods for preventing concrete and tile detachment from structures are inefficient, requiring multiple processes, skilled labor, and specialized equipment, and result in opaque surfaces that obscure deterioration inspection and aesthetically unsatisfactory results.
Innovation Solution
A one-component polyurethane resin composition containing an isocyanate group-containing urethane prepolymer and a thixotropy-imparting agent, applied with a trowel or brush, forming a transparent, high-strength resin film with improved weather resistance and workability, eliminating the need for a top coat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reinforcing layer is formed by affixing a cloth containing glass fibers or carbon fibers with an adhesive and applying epoxy resin, then concrete pieces can be prevented from falling, but the construction process becomes complex and time-consuming
Solution Approach 1:
The invention extracts and eliminates the cloth reinforcing agent from the conventional system, using only a resin composition that achieves both reinforcement and protection functions without requiring fabric layers or complex multi-step application processes
Solution Approach 2:
The invention merges the functions of the adhesive, reinforcing agent, and protective coating into a single integrated resin composition that simultaneously bonds to the concrete surface and forms a protective layer, eliminating the need for separate application steps
2Reliability
If a reinforcing layer with adhesive and epoxy resin is applied, then concrete detachment can be prevented, but construction time increases significantly
Solution Approach 1:
The invention removes the time-consuming steps of affixing cloth and applying separate epoxy resin layers, using a single resin composition that achieves the same protective function in one application step
Solution Approach 2:
The resin composition is formulated to provide both adhesion and protection in a single pre-mixed formulation, eliminating the need for sequential application steps and allowing workers to complete the task faster without sacrificing effectiveness
3Reliability
If opaque reinforcing materials are used to prevent concrete detachment, then structural reinforcement is achieved, but visual inspection of deterioration becomes difficult
Solution Approach 1:
The invention uses a transparent or translucent resin composition that allows light to pass through, enabling visual inspection of the concrete substrate beneath while still providing the necessary reinforcement and protection functions
Solution Approach 2:
The invention removes the opaque cloth reinforcing agent from the system, replacing it with a transparent resin composition that provides structural reinforcement without blocking visual inspection of the concrete surface
4Reliability
If conventional reinforcing methods are used, then concrete protection is achieved, but the appearance of tiled walls becomes aesthetically unsatisfactory
Solution Approach 1:
The invention uses a transparent resin composition that maintains the original appearance of the tiled wall and concrete structure, allowing the natural colors and textures to show through while still providing protective reinforcement
Solution Approach 2:
The invention removes the cloth and opaque coating materials that mar the appearance, using a clear resin composition that provides protection while preserving the aesthetic quality of the surface
5Productivity
If spray method with rapid-curing urethane resin is used, then protective film can be formed quickly, but special spraying apparatus is required and material disperses to surrounding areas
Solution Approach 1:
The invention replaces the complex spray apparatus with simple manual application tools such as brushes or rollers, eliminating the need for specialized equipment while maintaining efficient application capability
Solution Approach 2:
The resin composition is formulated with appropriate viscosity and flow characteristics that allow it to be easily applied with simple tools without dispersing to surrounding areas, acting as an intermediary between the worker and the concrete surface
6Reliability
If two-component resin composition requiring mixing is used, then curability is improved, but risk of improper mixing increases
Solution Approach 1:
The invention combines the resin and curing agent into a single pre-mixed one-component formulation that maintains stability during storage and cures reliably upon application, eliminating the risk of improper mixing while preserving reactive curability
Solution Approach 2:
The resin and curing agent are pre-combined in the correct proportions during manufacturing, with the curing reaction delayed until application, ensuring proper mixing ratios are achieved without requiring field mixing operations
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 solution reduces detachment risks, enhances visual inspection of concrete deterioration, maintains the appearance of tiled surfaces, and shortens construction time while reducing costs and expertise requirements.
Implementation Method 1
an isocyanate group-containing urethane prepolymer (A) and a thixotropy-imparting agent (B)
Implementation Method 2
a thixotropy-imparting agent (B)
Data Source
AI summary
A one-component type polyurethane resin composition for preventing detachment of concrete pieces and tiles containing an isocyanate group-containing urethane prepolymer (A) and a thixotropy-imparting agent (B), and a method for forming a reinforcing layer on a surface of a concrete structure or tiled wall containing a resin coated film composed thereof, in order to provide a one-component type polyurethane resin composition for preventing detachment of concrete pieces and tiles, which has improved workability by being able to be applied with a trowel or brush, forms a transparent resin coated film after reactive curing that has improved weather resistance without applying a top coat, facilitates diagnosis of deterioration of concrete by being carried out visually during maintenance of concrete structures, is able to maintain the existing appearance of the tiled exteriors of buildings and other structures and eliminates dispersion to surrounding areas during application.