Aqueous Flame-Retardant Adhesive Composition with Phase Stability
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Solution Overview
Problem
Existing adhesives using organic solvents face challenges in achieving flame retardancy, cost-effectiveness, and environmental safety, with organic flame retardants being expensive and harmful, and inorganic flame retardants causing separation issues, while aqueous adhesives lack inherent flame retardancy.
Innovation Solution
An aqueous flame retardant adhesive composition comprising vinyl acetate-ethylene copolymer, acryl-based resin, urethane-based resin, or silicon-based resin, combined with an aqueous polyvinyl chloride emulsion, cyclohexane-based plasticizer, and benzoate-based plasticizer, prepared through emulsion polymerization, to enhance flame retardancy, adhesive strength, and processability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organic flame retardant is used to achieve flame retardancy, then flame retarding effect is improved, but cost increases and environmental harm occurs
Solution Approach 1:
The patent changes the chemical composition parameters of the adhesive system by incorporating specific plasticizers (citrate-based, phosphorus-based, or nitrogen-based compounds) at controlled concentrations (0.1-10 wt% relative to adhesive weight). These compositional parameter changes enable the adhesive to achieve flame retardancy through alternative mechanisms that do not rely on traditional organic flame retardants, thereby reducing environmental harm and cost while maintaining fire safety performance.
2Reliability
If inorganic flame retardant is used to achieve flame retardancy, then flame retarding effect is improved, but layer separation and precipitation occur over time
Solution Approach 1:
The patent introduces plasticizers as intermediary substances that mediate between the adhesive components and flame retardancy requirements. These plasticizers (citrate, phosphorus-based, or nitrogen-based compounds) serve as compatible intermediaries that integrate flame-retardant functionality into the adhesive matrix without causing phase separation or precipitation, thereby maintaining both flame retardancy and compositional stability over time.
Solution Approach 2:
The patent modifies the chemical parameters of the adhesive system by incorporating specific plasticizers at optimized concentrations. This parameter change transforms the adhesive's fire resistance properties and internal compatibility, enabling sustained homogeneity and preventing the layer separation issues associated with inorganic flame retardants while maintaining effective flame retardancy.
3Object-affected harmful factors
If aqueous adhesive is used to improve environmental safety and cost, then environmental friendliness and cost are improved, but flame retardancy is lost
Solution Approach 1:
The patent enhances the aqueous adhesive system with multi-functional plasticizers that simultaneously provide flame retardancy, low-temperature stability, and maintained adhesive performance. These plasticizers serve multiple functions: they act as fire inhibitors, temperature stabilizers, and adhesive performance enhancers, enabling the aqueous adhesive to achieve flame retardancy without compromising environmental safety or requiring organic solvents.
Solution Approach 2:
The patent creates a composite adhesive system by combining aqueous adhesive with plasticizers containing fire-retardant elements (citrate, phosphorus, or nitrogen-based compounds). This composite formulation integrates flame-retardant functionality into the water-based adhesive matrix, achieving both environmental safety and fire resistance through synergistic material combination rather than relying on traditional organic solvent-based approaches.
4Ease of operation
If conventional adhesive formulation is used to maintain processability, then ease of application is maintained, but low temperature stability and extraction resistance deteriorate
Solution Approach 1:
The patent optimizes the chemical composition parameters by selecting and dosing specific plasticizers (citrate, phosphorus-based, or nitrogen-based compounds at 0.1-10 wt%). This parameter optimization simultaneously improves low-temperature stability by preventing adhesive embrittlement, enhances extraction resistance through stable molecular interactions, and maintains processability by controlling viscosity and flow characteristics, thereby resolving the trade-off between ease of application and performance reliability.
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 composition achieves excellent flame retardancy, low temperature stability, and improved processability, reducing costs and environmental impact, suitable for various applications including construction and industrial adhesives.
Implementation Method 1
conducting emulsion polymerization or seed emulsion polymerization of vinyl chloride monomers alone, or a mixture of vinyl chloride monomers and comonomers copolymerizable therewith in an aqueous medium, to prepare an aqueous polyvinyl chloride emulsion
Data Source
AI summary
This invention relates to an aqueous flame retardant adhesive composition that is environment-friendly, reduces cost through replacement of organic flame retardant, improves layer separation of adhesive according to the addition of inorganic flame retardant, and exhibits excellent adhesive strength, low temperature stability, processability and extraction resistance, and a method for preparing the same.