Nano-composite material-based intelligent fireproof textile and preparation method therefor
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Solution Overview
Problem
Cellulose fiber fabrics are inherently flammable, posing a significant fire risk, and existing flame retardants lack intelligence and effectiveness in early fire warning and smoke suppression.
Innovation Solution
A nano-composite material-based intelligent fireproof textile is developed, utilizing a molybdenum oxide quantum dot titanium carbide composite material integrated with MXene, which enhances temperature detection sensitivity, response speed, and smoke suppression through a heterojunction structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If MXene is used for fire detection in textile, then temperature detection sensitivity is improved, but MXene easily stacks during use reducing conductivity and application performance
Solution Approach 1:
The patent combines MXene with polydopamine-coated magnetic nanoparticles to form a composite material. The polydopamine coating acts as a spacer between MXene layers, preventing stacking and maintaining conductivity, while the magnetic nanoparticles provide additional functional benefits. This composite structure resolves the contradiction by maintaining both detection sensitivity and conductivity stability.
Solution Approach 2:
Polydopamine serves as an intermediary substance between MXene layers, preventing direct contact and stacking of MXene sheets. The coating creates physical separation that maintains the conductive pathways while preventing aggregation, thus preserving both detection capability and electrical stability during use.
2Reliability
If conventional flame retardants are used, then fire safety is improved, but intelligence and early fire warning capability are lacking
Solution Approach 1:
The MXene-based textile provides multiple functions simultaneously: it acts as a flame retardant, a temperature sensor, and an early warning system. The material detects temperature changes through resistance variations while also providing fire protection, eliminating the need for separate conventional flame retardant treatments and enabling intelligent monitoring capabilities.
Solution Approach 2:
The patent replaces conventional passive flame retardant chemistry with an active electronic sensing system based on MXene's thermoelectric properties. The detection mechanism uses electrical resistance changes in response to temperature, substituting mechanical/chemical fire safety systems with an electronic sensing and warning system.
3Measurement precision
If MXene thickness is reduced to improve detection sensitivity, then temperature detection sensitivity is improved, but MXene becomes more prone to stacking and conductivity loss
Solution Approach 1:
The patent applies local quality modification by coating only specific regions of the MXene structure with polydopamine. The coating is applied to the surfaces of MXene sheets and magnetic nanoparticles, creating localized spacers that prevent stacking without requiring thickening of the entire MXene structure. This maintains thinness for sensitivity while preventing aggregation through localized coating.
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 intelligent fireproof textile achieves a resistance temperature coefficient of -0.26%/°C, detects temperature changes of 0.5° C in 2.77 s, and maintains effective smoke suppression and fire alarm capability even after multiple cycles of combustion.
Implementation Method 1
When there is a temperature difference between the two ends of the MXene loaded fabric, the internal charge carriers quickly move to the hotter region, forming a stable potential difference. The intelligent fireproof textile achieves a resistance temperature coefficient of -0.26%/°C, and the sensitivity of the temperature change detected by the textile is 0.5° C., and the response time of the detection temperature is 2.77 s.
Implementation Method 2
Although the molybdenum oxide quantum dots do not directly participate in the charge transport process, due to its excellent electron mobility, the electron transport speed between the MXene nanosheets can be increased, the stacking of the sheet layers can be improved.
Implementation Method 3
the derived titanium dioxide can act as a catalyst at high temperature to promote the formation of continuous and dense carbon in the condensed phase.
Implementation Method 4
the layered nanostructure of MXene makes it a physical barrier for combustible gases
Implementation Method 5
dissolving ammonium molybdate powder in the solution prepared in step (1) according to the mass percentage concentration of ammonium molybdate of 2-3%, reacting under ultraviolet irradiation
Data Source
AI summary
A nano-composite material-based intelligent fireproof textile and a preparation method therefor. Titanium aluminum carbide powder is added into a mixed solution of hydrochloric acid and lithium fluoride, and a reaction takes place under the condition that the temperature of a water bath is 40-50° C.; the reactants are washed to be neutral, centrifugation is performed, a precipitate is ultrasonically dispersed in deionized water, ammonium molybdate powder is added, irradiation under ultraviolet light is performed, and dialyzing and drying are performed, to obtain a molybdenum oxide quantum dot titanium carbide composite material, which is dispersed as a nano-slurry, and a rolling-baking-roasting process is used to finish a pretreated fabric, to obtain a nano-composite material-based intelligent fireproof textile. The molybdenum oxide quantum dot titanium carbide composite material is prepared on the basis of etching and ion intercalation principles, and it is combined with the fabric via post-finishing, so that the textile has fire early warning and smoke suppression functions, which is beneficial for the further application of functionalized nano-materials in the field of textiles.