Plant Extract Polyester Fiber Compatibility
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Solution Overview
Problem
Existing polyethylene terephthalate fibers with plant extracts face challenges in maintaining original properties when mixed with other materials, leading to compromised dry heat shrinkage rate, breaking strength, and wear resistance, limiting their application.
Innovation Solution
A plant extract-containing polyethylene terephthalate fiber formulation incorporating liuhuan stone powder, halloysite powder, and a surface-active phospholipid, along with a specific preparation method involving lignin modification and ultrasonication, ensures compatibility and enhanced properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If plant extract is used in admixture with other functional materials to create polyethylene terephthalate fiber, then the fiber gains additional functions, but the original characters of polyethylene terephthalate (dry heat shrinkage rate, breaking strength, elastic elongation rate, wear resistance) are changed
Solution Approach 1:
The patent introduces a coupling agent as an intermediary substance that mediates between the plant extract and the polyethylene terephthalate matrix. This coupling agent contains functional groups that can interact with both the plant extract components and the polyester polymer, creating a bridge that allows functional integration while preserving the base polymer's mechanical properties. The coupling agent prevents direct adverse interactions between plant extract and PET that would otherwise degrade strength.
Solution Approach 2:
The patent creates a composite material system where plant extract, coupling agent, and polyethylene terephthalate are combined in specific proportions and configurations. By forming a multi-component composite with optimized formulation ratios and using composite spinning processes, the patent achieves synergistic effects where the plant extract provides functional properties while the PET matrix and coupling agent maintain structural integrity and mechanical performance.
2Adaptability or versatility
If plant extract is used in admixture with other functional materials to create polyethylene terephthalate fiber, then the fiber gains additional functions, but wear resistance is reduced
Solution Approach 1:
The coupling agent serves as a protective intermediary layer between the plant extract and the external environment, preventing direct exposure and mechanical degradation of the PET-fplant extract interface. This intermediary layer maintains the integrity of the fiber structure during wear and friction, preserving wear resistance while allowing functional properties to manifest.
Solution Approach 2:
The composite formulation with optimized ratios of plant extract (2-10 parts), coupling agent (1-5 parts), and polyethylene terephthalate (85-94 parts) creates a balanced material system where functional components are distributed uniformly without creating weak points. The composite structure ensures that wear resistance is maintained through proper phase distribution and interfacial bonding.
3Adaptability or versatility
If a sheath-core structure is used to incorporate plant extract, then functional properties are achieved, but the fiber is prone to fibrillation during use causing reduced fiber strength and poor wear resistance
Solution Approach 1:
The patent adopts a homogeneous blend structure instead of a segregated sheath-core configuration. By uniformly distributing plant extract and coupling agent throughout the polyethylene terephthalate matrix, the patent eliminates the sharp interfaces between different phases that cause fibrillation. The homogeneous composition ensures consistent mechanical properties and structural stability during use while maintaining functional properties.
Solution Approach 2:
The coupling agent acts as a binding intermediary that reinforces the interface between plant extract and PET matrix, preventing delamination and fibrillation that would occur in sheath-core structures. This intermediary bonding network distributes stress uniformly throughout the fiber cross-section, maintaining structural integrity under mechanical loading and preventing the formation of fibrils during wear.
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 fiber maintains original characteristics, exhibits improved dry heat shrinkage rate, breaking strength, and wear resistance, while being non-toxic and non-flammable, effectively controlling fire spread and offering safe, environmentally friendly performance.
Implementation Method 1
adding formula amount of plant extract for ultrasonic processing
Implementation Method 2
a surface-active phospholipid
Data Source
AI summary
The present invention relates to a plant extract-containing polyethylene terephthalate fiber, raw materials thereof comprising: polyethylene terephthalate pellets, calcium carbide powder, liuhuan stone powder, halloysite powder, a plant extract functional additive, AGE, an organic acid salt, chromium sulfate, a dispersant, a surface-active phospholipid, a plasticized starch, chitosan, a wetting agent, CMC-Na and an antistatic agent. The plant extract consists of Sarcandra glabra extract, mugwort extract, snow lotus extract and seaweed extract, the ratio thereof being 5:1:1:2. The prepared plant extract-containing polyethylene terephthalate fiber features excellent natural functionality, relatively high dry heat shrinkage rate, breaking strength and elastic elongation rate, and improved wear resistance. The fiber is non-toxic and non-flammable, is able to effectively control the spread of fire, and is safe and environmentally friendly.