PAM-Coated Peroxide Containers for Pressurized Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Peroxides are unstable due to the oxygen-oxygen bond, leading to decomposition and affecting their shelf life and safety when stored in unpressurised containers, posing risks of container rupture and combustion.
Innovation Solution
A container with an internal surface coated with a polyamide-imide (PAM) coating is used to stabilize peroxides, allowing pressurized storage and use as an aerosol, preventing decomposition and evolution of oxygen gas, even at elevated pressures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If peroxides are stored in unpressurised containers, then container rupture and combustion hazards are avoided, but shelf life and stability are reduced due to decomposition
Solution Approach 1:
A polyamide-imide (PAM) coating is applied to the internal surface of the container to act as an intermediary barrier between the peroxide solution and the container wall. This coating prevents metal-catalysed decomposition while allowing the container to be pressurised, thus resolving the contradiction between stability and shelf life
Solution Approach 2:
The invention changes the physical state parameter by allowing pressurisation of the peroxide solution. By combining pressurisation with the PAM coating, the system achieves both improved shelf life through reduced decomposition and maintained stability, overcoming the traditional limitation of unpressurised storage
2Adaptability or versatility
If peroxides are stored at elevated pressures, then aerosol application is enabled for large space disinfection, but decomposition and oxygen evolution are accelerated
Solution Approach 1:
The PAM coating serves as a protective intermediary that allows the peroxide solution to be stored and transported under elevated pressure without accelerating decomposition. This enables aerosol application capability while maintaining peroxide stability during storage and transport
3Strength
If metal containers are used for peroxide storage, then structural strength and rigidity are provided, but metal-catalysed decomposition occurs
Solution Approach 1:
The container system is segmented into two functional layers: the metal container wall providing structural strength and rigidity, and the PAM coating layer providing chemical stability by preventing metal-catalysed decomposition. This segmentation allows both requirements to be satisfied simultaneously
Solution Approach 2:
The container employs a composite structure combining metal material for strength and polyamide-imide coating material for chemical stability. This composite approach allows the container to provide both mechanical strength and protection against metal-catalysed decomposition
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 PAM coating extends the shelf life of peroxides by preventing decomposition and container rupture, enabling safe storage and use as an aerosol for disinfection applications.
Implementation Method 1
the PAM coating provides a barrier between the container wall and composition which, in embodiments in which the container comprises a metal, avoids metal-catalysed decomposition of the peroxide
Implementation Method 2
Peroxides are relatively unstable due to the presence of the oxygen-oxygen bond which makes them prone to decomposition and affects their shelf life and longevity
Data Source
AI summary
A container containing an aqueous composition comprising one or more peroxides is provided. The container includes an internal surface which is coated with a polyamideimide (PAM) coating.