Hydrophobic Coated Starch Composite for Fiber Binding
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Solution Overview
Problem
Starch particles used as binders in fiber manufacturing tend to absorb moisture, leading to gelatinization and aggregation, which reduces powder fluidity and stability in supplying starch to fibers, resulting in variable binding strength between fibers.
Innovation Solution
A starch composite is created by incorporating second particles with a hydrophobic material that have an affinity for starch particles, covering their surfaces to inhibit aggregation, comprising starch particles and second particles or coat layers made of hydrophobic materials like hydrocarbons, fatty acids, and inorganic materials, which are dispersed between cotton-like fibers and incorporated into the fiber structure manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If starch particles are used as binder, then natural material is utilized, but starch particles absorb moisture and aggregate
Solution Approach 1:
A hydrophobic material acts as an intermediary substance that coats the starch particles, preventing direct contact between starch particles and moisture. This mediator layer maintains the natural material advantage while eliminating the moisture absorption problem.
Solution Approach 2:
The invention creates a composite structure where hydrophobic material particles are combined with starch particles. The hydrophobic particles form a protective coating on the starch particles, creating a composite material that retains the binding properties of starch while gaining moisture resistance.
2Productivity
If starch particles aggregate, then powder fluidity is reduced, but supply stability is compromised
Solution Approach 1:
The hydrophobic material serves as a mediator that prevents aggregation, thereby maintaining powder fluidity. By coating individual starch particles, it ensures consistent flow characteristics and stable supply to the fibers during the manufacturing process.
3Strength
If starch particles are bound to aggregate, then binding strength between fibers varies, but uniformity is reduced
Solution Approach 1:
The hydrophobic coating acts as a consistent intermediary layer that ensures uniform distribution and controlled release of starch particles. This leads to consistent binding strength across all fibers while maintaining the natural material advantage.
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 enhances powder fluidity, maintains stable starch supply, increases binding strength between fibers, and ensures uniformity of the fiber structure by preventing starch particle aggregation and improving electrostatic attraction, resulting in a high-quality fiber structure.
Implementation Method 1
second particles containing a hydrophobic material having an affinity for the starch particles, which are the first particles... the outer surfaces of the first particles are covered by the second particles
Implementation Method 2
second particles containing a hydrophobic material having an affinity for the starch particles... which coat the starch particles
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
A fiber structure-manufacturing method comprising: accumulating a mixture comprising fibers and starch particles coated with inorganic particles in air; humidifying and molding the mixture.