Modified Starch Ether for Ceramic Tile Adhesive Anti-Sliding
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Solution Overview
Problem
Traditional ceramic tile adhesives, including those with starch ether, fail to provide excellent anti-sliding properties for large-size ceramic tiles, as they rely on linear polysaccharide structures that do not form sufficient bridging effects for cement particles, leading to inadequate sagging or sliding resistance.
Innovation Solution
A one-step etherification method for modifying starch into starch ether, followed by physical modification, is employed to create a product with more complex branched structures, enhancing the anti-sliding properties without compromising binding properties, using specific etherifying agents and temperature control to improve etherification efficiency and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If starch ether with linear polysaccharide structure is used, then water retention and thickening properties are improved, but anti-sliding and anti-sagging properties deteriorate
Solution Approach 1:
The patent changes the molecular structure parameter of starch ether from linear to branched configuration through chemical modification. This structural parameter change enables the polysaccharide to form three-dimensional network structures that provide both water retention capabilities and enhanced anti-sliding/sagging properties simultaneously
Solution Approach 2:
The patent creates a composite molecular structure by introducing branched chains into the starch ether molecule. This composite structure combines the water retention function of linear polysaccharides with the bridging effect of branched structures, achieving both thickening and anti-sliding properties in a single material
2Quantity of substance
If traditional multi-step etherification method is used, then starch ether can be produced, but production process complexity and cost increase
Solution Approach 1:
The patent merges multiple etherification steps into a single step by using a mixed etherifying agent system. This combines the functions of multiple separate reactions into one integrated process, simplifying the production workflow while maintaining starch ether synthesis efficiency
Solution Approach 2:
The patent employs a universal etherifying agent formulation that can perform multiple modification functions simultaneously. The mixed etherifying agents work together to achieve both chain branching and ether linkage formation in one reaction step, reducing process complexity
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 modified starch ether significantly improves the anti-sliding and anti-sagging properties of ceramic tile adhesives, meeting the requirements for large-size tiles while maintaining binding strength, and simplifies the production process with reduced environmental impact.
Implementation Method 1
starch was etherified, dried and ground. The starch, the alkalizer and the etherifying agent are used in etherification at a mass ratio of 1:(0.01-1.5):(0.02-1.75)
Data Source
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AI summary
The present invention relates to the technical field of building additives, and in particular to a preparation method of modified starch ether for improving the anti-sliding property of a ceramic tile adhesive. The preparation method includes chemical modification of subjecting starch to one-step etherification to obtain starch ether, followed by physical modification. In the preparation method, the cumbersome multi-step etherification in an existing method for preparing modified starch ether is avoided, and only one-step etherification is needed to obtain modified starch ether of better properties. Because physical modification is added, the obtained product can significantly improve the anti-sliding property of a ceramic tile adhesive. Moreover, the conditions for one-step etherification are significantly different from the prior art.