Starch Modeling Clay Composition for Elasticity and Storage Stability
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Solution Overview
Problem
Existing modeling clays contain toxic substances and have insufficient elasticity, ductility, and poor storage stability, posing safety risks and performance issues.
Innovation Solution
A food grade starch-based modeling clay is prepared by controlling starch gelatinization degree, adding hydrophilic colloid to form a stable network structure, and using a food grade plasticizer to enhance tensile properties, with specific ingredients and processing steps to achieve high elasticity and ductility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional materials (rubber, PVC, ore mud powder) are used for modeling clay, then the clay has good plasticity and workability, but it contains toxic substances and heavy metals that pose safety risks
Solution Approach 1:
The patent changes the chemical composition parameters by replacing traditional toxic materials with food-grade starch and natural additives. The starch content is controlled at 40-60 parts, combined with specific ratios of glycerin (10-20 parts), white oil (5-15 parts), and other natural ingredients to achieve non-toxic formulation while maintaining workability
Solution Approach 2:
The patent creates a composite material system using starch as the base material, combined with multiple functional additives including glycerin (plasticizer), white oil (lubricant), natural pigments, and preservatives. This composite approach allows each component to contribute specific properties while collectively achieving both safety and performance requirements
2Object-affected harmful factors
If rice flour and starch are used to prepare modeling clay, then the clay is safer and non-toxic, but it has insufficient elasticity and ductility
Solution Approach 1:
The patent optimizes the gelatinization parameters by controlling the heating temperature (60-80°C) and time (15-30 minutes) to achieve optimal starch gel structure. This parameter control transforms the starch molecules into a configuration that provides both safety and enhanced elasticity compared to simple rice flour formulations
Solution Approach 2:
The patent utilizes the phase transition of starch from raw granules to gelatinized starch through controlled heating and hydration. This phase change transforms the starch structure to provide improved elasticity and ductility while maintaining the safety benefits of food-grade ingredients
3Strength
If starch-based modeling clay is prepared with high gelatinization degree, then the clay has good elasticity, but it may gelate during the reaction process and poor storage stability
Solution Approach 1:
The patent performs preliminary stabilization by adding preservatives (sodium benzoate 0.1-0.5 parts, potassium sorbate 0.1-0.5 parts) before final formulation, and by optimizing the gelatinization process to achieve a balanced gel structure that resists further gelation during storage. This preliminary action prevents subsequent instability issues
4Strength
If food grade plasticizer is added to enhance tensile property, then the clay has improved ductility, but the formulation complexity increases
Solution Approach 1:
The patent achieves multi-functionality by using glycerin as both a plasticizer (improving ductility) and a humectant (maintaining moisture), and white oil as both a lubricant (improving workability) and a plasticizer (enhancing tensile properties). This reduces the need for separate additives and simplifies the overall formulation while achieving multiple performance goals
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 resulting clay exhibits improved viscoelasticity, elasticity, and ductility, meeting industry standards for cracking resistance, cold resistance, and storage stability, surpassing commercially available clays in performance.
Implementation Method 1
The addition of hydrophilic colloid in the modeling clay can enable hydrogen bonding with starch to form a stable three-dimensional mesh gel network structure
Implementation Method 2
The addition of a food grade plasticizer can break the hydrogen bonds between starch molecules, thereby reducing the glass transition temperature of starch and enhancing the tensile property of starch
Implementation Method 3
The present disclosure uses starch as a raw material and improves the viscoelasticity of modeling clay by controlling starch gelatinization degree during a preparation process
Data Source
AI summary
Disclosed are a food grade starch based modeling clay with high elasticity and high ductility and its preparation method, belonging to the technical field of modeling clay preparation. The starch based modeling clay provided by the present disclosure is prepared from the following formula components: 160-180 parts of starch, 140-160 parts of water, 10-15 parts of a food grade stabilizer, 10-15 parts of edible salt, 0-10 parts of hydrophilic colloid, 0.6-0.8 parts of a preservative, 40-60 parts of a food grade plasticizer, 6-10 parts of food grade white oil, and 4-8 parts of edible pigment. The starch includes one or a combination of more of cassava starch, wheat starch, and glutinous rice starch. The present disclosure, through combined use of the starch and the hydrophilic colloid, makes the prepared starch based modeling clay have good viscoelasticity and ductility, and good in storage stability, safe and non-toxic.