Polyester Fiber Flame-Retardant Composition With Stable Fixation
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Solution Overview
Problem
Conventional methods for imparting flame retardancy to polyester-based fibers using phosphorus-containing compounds face challenges such as inadequate absorption, degradation under UV light, and adverse effects on light fastness, rubbing fastness, fogging properties, thermal stability, and hydrolytic resistance, particularly in interior vehicle materials.
Innovation Solution
A flame-retarder agent comprising triphenylphosphine oxide and specific organophosphate ester-based or bismaleimide-based compounds, emulsified or dispersed in water with a surfactant, is used to enhance the absorption and fixation of these compounds onto polyester fibers through heating, ensuring excellent flame retardancy while maintaining light fastness, rubbing fastness, and fogging properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phosphorus-containing compounds are used as flame-retarder components, then flame retardancy is provided to polyester-based fiber, but absorption to the fiber is insufficient
Solution Approach 1:
The patent changes the chemical structure parameters of the flame-retarder component by selecting specific phosphorus-containing compounds (triphenylphosphine oxide, aromatic phosphate esters, cyclic phosphate esters) with optimized molecular characteristics that enhance their affinity and absorption to polyester-based fibers while maintaining flame retardancy
Solution Approach 2:
The patent uses composite flame-retarder formulations combining multiple phosphorus-containing compounds (triphenylphosphine oxide together with aromatic phosphate esters or cyclic phosphate esters) to achieve synergistic effects that improve both absorption to the fiber and flame retardancy performance
2Reliability
If phosphorus-containing compounds are used as flame-retarder components, then flame retardancy is provided to polyester-based fiber, but light fastness deteriorates due to UV light degradation
Solution Approach 1:
The patent selects phosphorus-containing compounds with specific chemical structures (triphenylphosphine oxide, aromatic phosphate esters, cyclic phosphate esters) that have inherent resistance to UV light degradation, thereby maintaining both flame retardancy and light fastness properties
Solution Approach 2:
The patent replaces conventional phosphorus compounds that degrade under UV light with more stable alternatives (triphenylphosphine oxide and related compounds) that maintain their flame-retardant function over time without causing dye degradation
3Reliability
If conventional flame-retarder agents are used, then flame retardancy is achieved, but fogging properties and hydrolytic stability are adversely affected
Solution Approach 1:
The patent modifies the chemical parameters of the flame-retarder agent by using triphenylphosphine oxide and stable phosphate esters/cyclic phosphates that exhibit resistance to hydrolysis, thereby maintaining flame retardancy while preventing degradation in humid conditions
Solution Approach 2:
The patent introduces triphenylphosphine oxide as an intermediary compound that mediates between the flame-retarder component and the polyester fiber, providing stable bonding that prevents hydrolytic degradation while maintaining flame retardancy
4Reliability
If halogenated cycloalkane compounds are used as flame-retarder components, then flame retardancy is provided to polyester-based fiber, but environmental harm increases due to dioxin generation
Solution Approach 1:
The patent replaces harmful halogenated compounds with phosphorus-containing compounds that provide equivalent or superior flame retardancy without generating dioxins or other environmentally harmful substances during incineration or degradation
Solution Approach 2:
The patent changes the chemical composition parameters by eliminating halogen atoms from the flame-retarder component and using phosphorus-based compounds (triphenylphosphine oxide, phosphate esters, cyclic phosphates) that are environmentally benign while maintaining flame retardancy
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 solution provides polyester fibers with superior flame retardancy, thermal stability, and hydrolysis resistance, preventing adverse impacts on light fastness and fogging properties, and allows for environmentally friendly disposal by avoiding halogen atom presence, which reduces dioxin generation during incineration.
Implementation Method 1
triphenylphosphine oxide and a specific organophosphate ester-based compound and/or a specific bismaleimide-based compound as flame-retarder components, emulsified or dispersed in water with a surfactant
Implementation Method 2
triphenylphosphine oxide and a specific organophosphate ester-based compound and/or a specific bismaleimide-based compound as flame-retarder components, emulsified or dispersed in water with a surfactant
Implementation Method 3
enhance the absorption and fixation of these compounds onto polyester fibers
Implementation Method 4
fixation of these compounds onto polyester fibers through heating
Data Source
AI summary
A flame-retarder agent for a polyester-based fiber comprising, as flame-retarder components:triphenylphosphine oxide (A) represented by the following formula (1):andat least one compound (B) selected from the group consisting of an organophosphate ester-based compound (B1) and a bismaleimide-based compound (B2), the organophosphate ester-based compound (B1) being represented by the following general formula (2):[in formula (2), R1 to R6 each represent one selected from the group consisting of a hydrogen atom and an alkyl group having 1 to 4 carbon atoms], andthe bismaleimide-based compound (B2) being represented by the following general formula (3):[in formula (3), R7 represents an arylene group having 6 to 20 carbon atoms].