Tile Adhesive Binder Composition Using Zeolite for Wet Adhesion
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Solution Overview
Problem
Existing cement-based tile adhesives often require complex and expensive organic binders to meet high performance standards, such as those set by EN 12004, particularly in terms of tensile adhesion strength after water immersion and heat aging, while using more common and less-expensive binders results in suboptimal performance.
Innovation Solution
Incorporating a porous aluminosilicate compound, such as zeolite, into the mortar formulation alongside a water-dispersible organic binder, which can be in the form of a redispersible powder, to enhance the mortar's tensile adhesion strength under various conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex and expensive organic binders (such as terpolymers of ethylene, vinyl acetate and methyl methacrylate) are used, then tensile adhesion strength after water immersion and heat aging is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines a porous aluminosilicate compound with a simpler, less expensive organic binder to create a composite adhesive composition. This composite approach allows the system to achieve high tensile adhesion strength after water immersion and heat aging (meeting EN 12004 standards) without requiring complex terpolymer binders, thereby reducing manufacturing cost while maintaining reliability
Solution Approach 2:
The patent utilizes a porous aluminosilicate compound as a key ingredient in the adhesive composition. The porous structure of this material contributes to water retention and adhesion enhancement, allowing simpler organic binders to perform at levels previously only achievable with complex expensive binders, thus resolving the contradiction between performance and cost
2Ease of manufacture
If common and less-expensive organic binders are used, then manufacturing cost is reduced, but tensile adhesion strength after water immersion and heat aging deteriorates
Solution Approach 1:
The porous aluminosilicate compound acts as an intermediary that enhances the performance of less-expensive organic binders. It mediates between the simple binder and the substrate, providing water retention and adhesion promotion that allows inexpensive binders to achieve the tensile adhesion strength required by EN 12004 standards after water immersion and heat aging
Solution Approach 2:
The patent changes the compositional parameters of the adhesive system by adding porous aluminosilicate compound, which alters the water retention, viscosity, and adhesion characteristics. This parameter change enables less-expensive binders to achieve performance levels previously only possible with complex binders, resolving the contradiction between cost and reliability
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 presence of the porous aluminosilicate compound improves the water-immersion tensile strength of the mortar without compromising other desirable properties, allowing for better adhesion performance even with less-expensive organic binders.
Implementation Method 1
from 1 to 10 weight percent of a porous aluminosilicate compound, based on the weight of the organic binder
Implementation Method 2
the presence of a small amount of porous aluminosilicate compound blended with the mortar improves the water-immersion tensile strength of the mortar
Implementation Method 3
The redispersible powders typically start as emulsions of the organic binder that can be dried to form a dry powder and can later be redispersed in water to form an emulsion again
Implementation Method 4
In many embodiments, the redispersible powder contains both the organic binder and a surfactant to aid in forming the emulsion
Data Source
AI summary
In mortars used for tile adhesion that contain an organic binder, properties such as adhesion after water immersion can be improved by adding a small amount of porous aluminosilicate, such as zeolite.