Systems and methods for the functionalization of polyolefin fibers
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Solution Overview
Problem
Conventional methods for functionalizing polyolefin fibers require heating large amounts of precursor solution, which is energy-intensive and inefficient.
Innovation Solution
A system comprising a reactor chamber, a fiber pulley system, and a precursor sprinkler system that aerosolizes the precursor solution, allowing it to contact the polyolefin fibers as they pass through the reactor chamber, eliminating the need for a large heated bath.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large bath of precursor solution is used for functionalization, then the polyolefin fiber can be adequately functionalized, but a large amount of energy is required to heat and maintain the bath temperature
Solution Approach 1:
The patent applies local quality by transitioning from a bulk bath system to a targeted spray system. The precursor solution is applied locally to the fiber surface through multiple spray nozzles positioned along the fiber path, rather than heating and maintaining a large volume of solution. This localized application reduces energy consumption while ensuring adequate functionalization where needed.
Solution Approach 2:
The patent extracts the essential function of precursor solution application from the bulk bath context and implements it through a spray system. By taking out the precursor solution from the large heated bath and delivering it directly to the fiber via aerosol sprays, the system eliminates the need to heat large volumes of solution while maintaining effective functionalization.
2Reliability
If a large bath of precursor solution is used for functionalization, then complete coverage of the fiber is achieved, but the process becomes inefficient due to the large volume of solution required
Solution Approach 1:
The patent segments the precursor solution application into multiple discrete spray nozzles distributed along the fiber path. Instead of using a single large bath, the system divides the coating function across multiple localized spray points, allowing precise delivery of precursor solution to the fiber surface and improving overall process efficiency.
Solution Approach 2:
The patent employs pneumatic principles by using pressurized gas to generate aerosol sprays of the precursor solution. The spray nozzles utilize gas flow to atomize and deliver the precursor solution onto the moving fiber, enabling efficient and uniform coverage without requiring large volumes of solution.
3Reliability
If the precursor solution is heated in a large bath, then the functionalization reaction can proceed effectively, but the energy required to heat and maintain the bath is excessive
Solution Approach 1:
The system applies precursor solution to the fiber before the fiber enters the heated reaction zone. By pre-applying the precursor through spray nozzles located upstream, the fiber surface is prepared in advance, and subsequent heating in the reaction zone is more efficient since only the fiber and applied precursor need heating, not a large bath volume.
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
This method increases the efficiency of the functionalization process by reducing the amount of precursor solution needed and lowering energy consumption, while maintaining effective functionalization of the polyolefin fibers.
Implementation Method 1
The precursor sprinkler system may be operable to aerosolize a precursor solution and contact the aerosolized precursor solution onto the polyolefin fiber
Data Source
AI summary
A system for the functionalization of polyolefin fiber includes a reactor chamber, a fiber pulley system, and a precursor sprinkler system. The reactor chamber defines an interior reactor space and a plurality of fiber inlet/outlet pairs positioned at opposite ends of respective fiber processing axes. The fiber pulley system is arranged to direct polyolefin fiber through the plurality of fiber inlet/outlet pairs, along a fiber processing path comprising the respective fiber processing axes. The precursor sprinkler system is operable to aerosolize a precursor solution and contact the aerosolized precursor solution with the polyolefin fiber. A method for functionalizing polyolefin fiber includes aerosolizing the precursor solution to form an aerosolized precursor solution, passing polyolefin fiber along the fiber pulley system into the reactor chamber, contacting the polyolefin fiber with the aerosolized precursor solution, and passing functionalized polyolefin fiber out of the interior reactor space of the reactor chamber.