Flameproof Fiber Composition With Water-Resistant Phosphorus Additives
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Solution Overview
Problem
Current flameproofing methods for fibers using halogen-free agents face challenges in achieving both water resistance and flameproofness, with existing halogen-free agents like ammonium polyphosphate suffering from solubility issues and compromising physical properties.
Innovation Solution
A process involving an organic phosphorus compound, represented by a specific formula, is used as a flameproofing agent, which is insoluble or barely soluble in water, combined with melamine polyphosphate, to create a flameproof fiber product that maintains excellent physical properties and water resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water-soluble flameproofing agents like ammonium polyphosphate are used to achieve flameproofness, then flameproofing effect is improved, but water resistance deteriorates due to elution into water
Solution Approach 1:
The patent changes the solubility parameter of the flameproofing agent by using an organic phosphorus compound with specific molecular structure (formula 1) that has low water solubility, preventing elution while maintaining flameproofing effectiveness
Solution Approach 2:
The patent creates a composite flameproofing system by combining the organic phosphorus compound (component A) with melamine polyphosphate (component B) in specific ratios, where the composite provides both flameproofness and water resistance that neither component achieves alone
2Object-affected harmful factors
If halogen-free flameproofing agents are used to eliminate harmful emissions, then environmental safety is improved, but flameproofing effectiveness deteriorates compared to halogen-based agents
Solution Approach 1:
The patent changes the chemical composition parameters by selecting specific organic phosphorus compounds with controlled solubility and reactivity, achieving effective flame inhibition without halogen-based harmful emissions
Solution Approach 2:
The organic phosphorus compound acts as an intermediary that forms a protective char layer on the fiber surface during combustion, mediating between the halogen-free requirement and effective flameproofing need
3Reliability
If flameproofing agents are added in large amounts to achieve high flameproofness, then flameproofing effect is improved, but physical properties deteriorate due to thickening and gum-up of synthetic resin emulsion
Solution Approach 1:
The patent changes the concentration parameter by using highly effective low-solubility organic phosphorus compounds that achieve required flameproofness at lower addition levels, avoiding resin emulsion thickening and gum-up
Solution Approach 2:
The patent replaces conventional flameproofing agents with a more efficient organic phosphorus compound that provides equivalent or superior flameproofness at lower doses, reducing negative impacts on resin properties
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 organic phosphorus compound achieves high flameproofness and water resistance simultaneously, improving the flameproofing and physical properties of fiber products without using halogen-based agents, addressing the limitations of previous halogen-free solutions.
Implementation Method 1
a flameproofing agent for fibers comprising 100 parts by weight of a dispersant, 1 to 300 parts by weight of an organic phosphorus compound (component A) represented by the following formula (1) based on 100 parts by weight of a dispersant
Implementation Method 2
an organic phosphorus compound (component A) represented by the following formula (1) which is insoluble or hardly soluble in water has high flameproofness and excellent physical properties (light resistance, heat resistance, texture) as a flameproofing agent for fibers
Data Source
AI summary
A flameproofing agent for fibers which has high flameproofness and excellent physical properties (light resistance, heat resistance, texture), a process for manufacturing a flameproof fiber product and a flameproof fiber product. The flameproofing agent comprises an organic phosphorus compound (component A) represented by the following formula (1). (In the above formula, X1 and X2 are the same or different and each an aromatic substituted alkyl group represented by the following formula (2).) (In the above formula, AL is a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, Ar is a phenyl group, naphthyl group or anthryl group all of which may have a substituent, "n" is an integer of 1 to 3, and Ar may be bonded to any carbon atom contained in AL.)