Polysilocarb Ceramic Materials for Flame-Resistant Structures
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Solution Overview
Problem
Polyorganic compositions, such as polysilane and polysiloxane materials, face challenges due to high production costs, requirement of hazardous solvents, limited structural strength, and inability to form non-reinforced structures with usable strength, which hinders their widespread application in ceramics and plastics.
Innovation Solution
Development of polysilocarb derived composite materials using a solvent-free formulation with precursors like Phenyltriethoxysilane and Trimethylethoxysilane, combined with cutting materials like polycrystalline diamond compact, and a curing process that results in a ceramic with specific silicon, oxygen, and carbon compositions, enabling the creation of reinforced structures and flame-resistant products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If polysilane and polysiloxane materials are used to create ceramic components, then high temperature properties are achieved, but production costs increase to thousands or tens-of-thousands of dollars per pound
Solution Approach 1:
The patent changes the chemical composition parameters of the precursor materials, using polysilocarb formulations with specific Si-C and Si-O bond ratios to achieve high temperature ceramic properties at lower production costs compared to traditional polysilane and polysiloxane materials
Solution Approach 2:
The invention creates composite ceramic materials through polysilocarb precursors that combine silicon-carbon and silicon-oxygen bonding structures, achieving the desired high temperature properties while reducing manufacturing costs through a more efficient material composition
2Ease of manufacture
If traditional polysilane and polysiloxane processing is used, then ceramic materials can be produced, but hazardous organic solvents such as toluene, tetrahydrofuran (THF), and hexane are required
Solution Approach 1:
The patent extracts and eliminates the hazardous organic solvent component from the processing system by developing a solvent-free formulation approach, removing toluene, THF, and hexane from the manufacturing process while maintaining ceramic production capability
Solution Approach 2:
The invention enables the precursor formulation to self-cure and self-process without requiring external hazardous solvents, using the intrinsic properties of the polysilocarb composition to achieve ceramic transformation through controlled pyrolysis
3Ease of manufacture
If polysilane and polysiloxane materials are used, then some ceramic applications are achieved, but the materials are incapable of making non-reinforced structures having any usable strength
Solution Approach 1:
The patent changes the molecular structure parameters of the precursor material by incorporating Si-C bonds in addition to Si-O bonds, creating a more robust three-dimensional network structure that provides usable strength in non-reinforced ceramic structures
Solution Approach 2:
The invention creates a composite bonding structure within the ceramic matrix by combining silicon-carbon and silicon-oxygen bonds, resulting in enhanced mechanical strength that enables non-reinforced structures to achieve usable load-bearing capabilities
4Manufacturing precision
If traditional ceramic processing methods are used, then high purity materials can be produced, but multiple solvent and reagent based reaction steps coupled with curing and pyrolizing steps are required
Solution Approach 1:
The patent merges multiple processing steps into a simplified sequence by using a solvent-free precursor formulation that requires fewer reaction steps, combining curing and pyrolysis into a more integrated process while maintaining high material purity
Solution Approach 2:
The invention extracts and removes the need for multiple solvent and reagent-based reaction steps from the traditional process, eliminating unnecessary intermediate steps while achieving the same or better material purity through direct pyrolysis of the optimized precursor
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 polysilocarb materials offer reduced production costs, improved manufacturing flexibility, and enhanced structural properties, allowing for the creation of strong, flame-resistant composite products suitable for various applications, including structural building members and fire-resistant materials.
Implementation Method 1
a curing process that results in a ceramic with specific silicon, oxygen, and carbon compositions
Data Source
AI summary
Polysilocarb formulations, cured and pyrolized materials, was well as articles and use for this material. In particular pyrolized polysilocarb ceramic materials and articles contain these materials where, the ceramic has from about 30 weight % to about 60 weight % silicon, from about 5 weight % to about 40 weight % oxygen, and from about 3 weight % to about 35 weight % carbon, and wherein 20 weight % to 80 weight % of the carbon is silicon-bound-carbon and 80 weight % to about 20 weight % of the carbon is free carbon.