Rod-Shaped Electro-Polarizable Particles for Fast Allochroic Optical Films
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Solution Overview
Problem
Existing electrochromic technologies, such as PDLC and EC, suffer from limitations such as narrow transmittance range, slow allochroic speed, high cost, and complex processing, limiting their application in smart glass technologies.
Innovation Solution
Development of an electro-polarizable particle comprising a metal iodide, carboxylic acid nitrogenous organic molecule, iodine, and cellulose suspending agent, with a rod-shaped structure, and a preparation method involving a reaction process to create an electro-polarizable allochroic optical film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conductive polymer electrochromic (EC) technology is used, then transmittance range and energy-saving effect are improved, but processing complexity and cost increase
Solution Approach 1:
The patent employs composite materials by combining metal iodide (inorganic) with carboxylic acid nitrogenous organic molecules (organic) to form an organic-inorganic hybrid electro-polarizable particle. This composite structure achieves electrochromic functionality with wide transmittance range while avoiding the complex processing and high costs associated with conventional conductive polymer EC technology.
2Ease of operation
If conventional electrochromic technologies are used, then shading property is achieved, but response speed is slow
Solution Approach 1:
The patent changes the material parameters by using metal iodide-based electro-polarizable particles with specific molecular structures and compositions. This parameter change enables fast discoloration response speed while maintaining effective shading property, overcoming the slow response limitation of conventional electrochromic technologies.
3Speed
If electro-polarizable particles with fast discoloration are developed, then response speed is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-synthesizing the electro-polarizable particles with optimized structures and properties before device fabrication. The particles are prepared in advance with controlled morphology, size, and composition, which simplifies the overall device manufacturing process while ensuring fast discoloration performance.
Solution Approach 2:
The patent uses a cellulose suspending agent as an intermediary substance to facilitate the preparation and stabilization of electro-polarizable particles. This intermediary enables easy handling, dispersion, and integration of the particles into optical films, simplifying the manufacturing process while maintaining fast response characteristics.
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 electro-polarizable particle achieves a wide transmittance range, fast discoloration, and low haze, suitable for large-scale applications with improved stability and ease of preparation, resulting in an optical film with adjustable transmittance and rapid response.
Implementation Method 1
The electro-polarizable particle is an organic-inorganic hybrid particle with a certain shape. The organic-inorganic hybrid particle is anisotropic and can be polarized and deflected under electric field (magnetic field). After being made into a device, it shows the allochroic function.
Implementation Method 2
an electro-polarizable particle, including a metal iodide, a carboxylic acid nitrogenous organic molecule, iodine and a cellulose suspending agent
Data Source
AI summary
The present application relates to electro-polarizable particle, a preparation method thereof and an electro-polarizable allochroic optical film, belonging to the technical field of electro-polarizable allochroic optical film devices. The present application discloses electro-polarizable particle, whose raw materials include a metal iodide, a carboxylic acid nitrogenous organic molecule, iodine and a cellulose suspending agent; the electro-polarizable particle have a rod-shaped structure, a length of 100-2000 nm, and a width of 10-200 nm. The present application further discloses a preparation method for electro-polarizable particle, and also discloses an electro-polarizable allochroic optical film containing the electro-polarizable particle.