Phosphonate Flame Retardant for Styrenic Resins
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Solution Overview
Problem
Styrenic resins used in electronic devices and engineering applications lack fire resistance, and existing halogen-containing flame retardants pose environmental and health hazards due to toxic gas production and persistence.
Innovation Solution
A novel phosphonate-based compound, represented by Chemical Formula 1, is integrated into thermoplastic resin compositions to provide halogen-free flame resistance, combined with a phosphorus flame retardant, enhancing fire stability and environmental safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If halogen-containing flame retardants are used to improve flame resistance of styrenic resins, then flame retardancy is achieved, but toxic gases are released and environmental persistence increases
Solution Approach 1:
The invention changes the chemical composition parameter of the flame retardant from halogen-containing to phosphonate-based compounds. This parameter change maintains the flame resistance function while eliminating the harmful effects of halogen release during combustion, directly resolving the contradiction between achieving flame retardancy and avoiding toxic gas generation.
Solution Approach 2:
The invention converts the previously harmful halogen-containing flame retardants into beneficial phosphonate-based compounds that provide flame resistance without the harmful side effects. The phosphonate compounds decompose into non-toxic products, transforming the flame retardancy function into a beneficial process that does not generate environmental harm.
2Object-generated harmful factors
If phosphonate-based compounds are used as halogen-free flame retardants, then environmental safety is improved, but flame resistance performance may be reduced compared to halogen-containing compounds
Solution Approach 1:
The invention uses composite phosphonate-based compounds with specific molecular structures containing phosphorus atoms bonded to carbon chains with aromatic rings. This composite molecular structure combines the environmental safety of halogen-free compounds with enhanced flame resistance performance, overcoming the limitation of reduced effectiveness compared to halogen-containing alternatives.
3Reliability
If flame retardants are added to styrenic resins to achieve fire stability, then fire resistance is improved, but the physical properties of the resin may be degraded
Solution Approach 1:
The invention changes the chemical structure parameters of the phosphonate-based flame retardant to include specific alkyl chains and aromatic groups that improve compatibility with styrenic resins. This parameter optimization allows the flame retardant to integrate well with the resin matrix, maintaining physical properties while achieving fire stability.
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 phosphonate-based compound and phosphorus flame retardant combination achieves excellent flame resistance and impact strength in thermoplastic resin compositions, reducing environmental impact and health risks associated with halogen-containing compounds.
Implementation Method 1
When the phosphonate-based compound is used, phosphorus-containing radicals can be released to inhibit flames
Implementation Method 2
The phosphonate-based compound and phosphorus flame retardant combination achieves excellent flame resistance and impact strength in thermoplastic resin compositions, reducing environmental impact and health risks associated with halogen-containing compounds
Data Source
AI summary
The present invention provides a phosphonate based compound (B) and a flame resistant thermoplastic resin composition including a thermoplastic resin (A) and the phosphonate based compound (B).