Nanoparticle Flame Retardant Compositions
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Solution Overview
Problem
Current methods for imparting fire resistance to polymers often compromise their processability, mechanical properties, and require high loadings of phosphonate materials, which can be environmentally detrimental.
Innovation Solution
A flame retardant composition comprising phosphonate oligomers or polymers, nanoparticles, and optionally a dispersing agent, blended with a second polymer, which reduces the need for high phosphonate loadings and maintains polymer characteristics while enhancing fire resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high loadings of phosphonate materials are used to achieve fire resistance, then flame retardancy is improved, but mechanical properties and processability deteriorate
Solution Approach 1:
The patent combines phosphonate oligomers/polymers with nanoparticles (such as aluminum oxide, silicon oxide, or metal hydroxides) to create a composite flame retardant system. This composite approach allows achieving effective flame retardancy at lower phosphonate loadings compared to using phosphonates alone, thereby preserving mechanical properties and processability while maintaining fire resistance.
2Reliability
If high loadings of phosphonate materials are used to achieve fire resistance, then flame retardancy is improved, but processability deteriorates
Solution Approach 1:
The patent employs composite materials combining phosphonate oligomers/polymers with nanoparticles and optionally dispersing agents. This composite formulation achieves effective flame retardancy at reduced phosphonate concentrations, improving processability by reducing the negative impact on melt flow index and other processing parameters while maintaining fire resistance performance.
3Reliability
If high loadings of phosphonate materials are used to achieve fire resistance, then flame retardancy is improved, but environmental impact worsens
Solution Approach 1:
The patent changes the concentration parameter of phosphonate materials by combining them with nanoparticles, thereby reducing the loading required for effective flame retardancy. This parameter change lowers the environmental impact associated with phosphonate production and usage while maintaining fire resistance through the synergistic effect of the nanoparticle composite system.
4Reliability
If phosphonate materials are used to impart fire resistance, then flame retardancy is improved, but other polymer characteristics deteriorate
Solution Approach 1:
The patent applies local quality by incorporating nanoparticles with specific surface properties and sizes into the phosphonate oligomer/polymer matrix. This localized enhancement at the nanoscale provides fire resistance while minimizing the overall impact on polymer characteristics such as crystallinity, melting behavior, and mechanical properties, thereby preserving adaptability for different applications.
Data Source
AI summary
Flame retardant compositions, blends and articles include phosphonate polymers, nanoparticles and optionally dispersing agents. A method for preparing such retardant composition, blends, and articles is also presented herein.