Polypropylene Spunbond Fabric with Porous Nanocomposite Modifier
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Solution Overview
Problem
Existing methods for modifying polypropylene spunbond non-woven fabrics often destroy organic compounds, leading to issues like mildew, low softness, shrinkage after hot rolling, and poor air permeability.
Innovation Solution
Incorporating a modified nanocomposite material containing tea polyphenol, naringin, or emodin, combined with porous nanomaterials, into the fabric production process, which involves dissolving these compounds in water, adding them to a fat-soluble solvent, and grinding to create a composite modifier for improved dispersion and retention during spinning and hot-rolling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organic compounds are added to modify non-woven fabric, then antibacterial performance is improved, but the organic compound components are destroyed during processing
Solution Approach 1:
The patent uses porous nanomaterials as intermediary carriers to load organic compounds. The porous structure physically protects the organic compounds from degradation during high-temperature processing while enabling their gradual release to maintain antibacterial performance. This mediator approach resolves the contradiction by separating the protective function from the active antibacterial function.
Solution Approach 2:
The patent creates composite materials combining porous nanomaterials with organic compounds (tea polyphenol, naringin, or emodin). This composite structure allows the inorganic porous framework to provide thermal stability and structural integrity during processing, while the organic compounds embedded within maintain their antibacterial properties, thus resolving the contradiction between composition stability and functional performance.
2Ease of manufacture
If conventional modification methods are used, then production process is simple, but the non-woven fabric exhibits poor performance including mildew, low softness, and shrinkage
Solution Approach 1:
The patent applies preliminary action by pre-loading organic compounds into porous nanomaterials before incorporating them into the non-woven fabric. This pre-preparation ensures uniform distribution and protected integrity of the active compounds throughout the manufacturing process, preventing degradation and ensuring consistent performance without significantly complicating the overall production workflow.
Solution Approach 2:
The patent utilizes porous nanomaterials as carriers for organic compounds. The porous structure provides large surface area for compound loading, protects the compounds during processing, and enables controlled release. This approach maintains ease of manufacture while dramatically improving fabric performance including softness, mildew resistance, and dimensional stability.
3Strength
If high temperature processing is applied, then fiber bonding is achieved, but organic compound components are destroyed
Solution Approach 1:
The porous nanomaterials serve as heat-resistant intermediaries that protect the temperature-sensitive organic compounds during high-temperature fiber bonding. The inorganic porous framework withstands the bonding temperatures while physically shielding the embedded organic compounds from thermal degradation, thus enabling both strong fiber bonding and compound stability.
Solution Approach 2:
The porous nanomaterial structure provides thermal protection to the organic compounds during high-temperature processing. The porous framework acts as a thermal barrier and physical protective matrix, allowing the organic compounds to survive the bonding process intact while still enabling effective fiber bonding through the composite structure.
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 non-woven fabrics exhibit enhanced antibacterial performance, maintaining antibacterial rates even after repeated washing, while also improving softness, air permeability, and water absorption, with uniform dispersion ensuring consistent performance.
Implementation Method 1
adding a porous nanomaterial into the solution to form a mixture, and stirring the mixture to obtain the modified nanocomposite material
Implementation Method 2
adding a fat-soluble solvent into the modified nanocomposite material, and grinding the modified nanocomposite material to provide the composite modifier
Data Source
AI summary
A modified polypropylene spunbond non-woven fabric and a preparation method of the modified polypropylene spunbond non-woven fabric are provided. The modified polypropylene spunbond non-woven fabric contains a modified nanocomposite material including an organic compound, the organic compound including one of tea polyphenol, naringin, and emodin. The organic compound is in a weight percentage range of approximately 0.1%-5% based on a total weight of the modified polypropylene spunbond non-woven fabric.