Cellulose Ether Composition for Inorganic Extrusion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing formulations for extruding inorganic masses, such as cement-based compositions, face challenges in achieving optimal extrusion properties like low pressure, high speed, minimal deformation, smooth surfaces, and enhanced strength, particularly at higher temperatures, due to unsuitable ratios of cellulose ether, polycarboxylate ether, and defoamer components.
Innovation Solution
A cellulose ether composition with specific weight ratios of 55-99.8% cellulose ether, 0.19-45% polycarboxylate ether, and 0.01-25% defoamer is used to improve extrusion process parameters and product properties, including reduced linear width expansion, increased cohesion, and improved surface quality and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If conventional cellulose ether formulations are used for extruding inorganic masses, then basic extrusion functionality is achieved, but extrusion pressure is high and extrusion speed is low
Solution Approach 1:
The patent changes the chemical composition parameters of the additive system by introducing a specific trio of components (cellulose ether, polycarboxylate ether, and defoamer) in defined weight ratios. This parameter modification transforms the rheological properties of the inorganic mass, enabling lower extrusion pressure and higher extrusion speed simultaneously
Solution Approach 2:
The patent creates a composite additive system combining three different chemical substances (cellulose ether, polycarboxylate ether, and defoamer) with specific functional properties. Each component contributes different characteristics: cellulose ether for water retention and basic lubrication, polycarboxylate ether for flow improvement and pressure reduction, and defoamer for surface quality. The synergistic combination resolves the contradiction between pressure and speed
2Stability of the object's composition
If conventional cellulose ether formulations are used, then extrusion process continues, but linear width expansion (spring back) is excessive
Solution Approach 1:
The patent modifies the chemical composition parameters by incorporating polycarboxylate ether and defoamer in specific ratios with cellulose ether. This parameter change affects the viscoelastic properties of the extruded mass, reducing the elastic recovery (spring back) and improving dimensional accuracy of the extruded profile
3Reliability
If conventional cellulose ether formulations are used, then extrusion process continues, but surface quality deteriorates with cracks and roughness
Solution Approach 1:
The patent creates a composite additive system where the defoamer component specifically addresses surface quality issues by eliminating air bubbles and preventing crack formation during extrusion. The polycarboxylate ether contributes to surface smoothness by improving flow characteristics. This composite approach maintains process simplicity while dramatically improving surface quality
Solution Approach 2:
The defoamer acts as an intermediary substance that mediates between the inorganic mass components and the extrusion process. It eliminates harmful air bubbles that would otherwise cause surface defects and cracks, thereby improving surface quality without complicating the manufacturing process
4Strength
If conventional cellulose ether formulations are used, then basic water retention is achieved, but cohesion and strength are insufficient
Solution Approach 1:
The patent changes the chemical composition parameters by introducing polycarboxylate ether and defoamer in specific ratios with cellulose ether. This parameter modification enhances the cohesive properties of the inorganic mass, improving strength characteristics while maintaining optimal water requirement through the synergistic interaction of the three components
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 specified composition achieves lower extrusion pressure, higher speed, reduced profile expansion, stronger cohesion, greater ductility, smoother surfaces, and enhanced compressive and bending strengths, addressing the limitations of previous ratios and formulations.
Implementation Method 1
cellulose ether composition for use as a water retention, plasticizing and lubricant in the extrusion of inorganic masses
Implementation Method 2
cellulose ether composition for use as a water retention, plasticizing and lubricant in the extrusion of inorganic masses
Data Source
AI summary
The invention relates to additives containing a cellulose ether composition used in the form of a water-retainer, plasticiser and a lubricant for extruding inorganic materials. The use of the inventive cellulose ether composition in construction materials and in other mixtures whose maximum grain size is equal to 2 mm and a method for extruding inorganic materials by means of said additives are also disclosed. The use of said methyl-cellulose composition makes it possible to obtain, while the extrusion process, the improved process properties, the best quality of the extruded body surface and the product improved properties. The additives containing cellulose ether composition also comprise a solvent (for example, a carboxylate ether or carboxylic acid) and an antifoaming agent (for example alkylene-glycol).