Copolyetherester Flame-Retardant Composition With Reduced Smoke
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Solution Overview
Problem
Current flame-retardant polymer resins effectively reduce flammability but often result in high smoke production upon exposure to heat or flames, posing a risk in fire scenarios due to smoke's contribution to damage and mortality.
Innovation Solution
A flame-retardant copolyetherester composition incorporating aluminium diethylphosphinate, zinc diethylphosphinate, and a phosphite selected from aluminium or zinc salts of phosphorous acid, with a phosphite concentration of 2 to 20 wt%, which reduces smoke production while maintaining acceptable flame-retardancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flame retardants are used in polymer resins to reduce flammability, then fire resistance is improved, but smoke production increases
Solution Approach 1:
The invention uses a composite flame retardant system combining aluminium diethyl phosphinate, zinc diethyl phosphinate, and phosphite in specific proportions (2-20 wt% phosphite). This multi-component composite approach achieves both flame retardancy and smoke suppression, resolving the contradiction between fire resistance and smoke production that plagues single-component systems.
Solution Approach 2:
The invention optimizes the concentration parameters of each flame retardant component, specifically setting phosphite at 2-20 wt% of the total composition. By carefully controlling the parametric ratios of aluminium diethyl phosphinate, zinc diethyl phosphinate, and phosphite, the system achieves the optimal balance between flame retardancy and smoke suppression.
2Object-affected harmful factors
If non-halogenated flame retardants are used, then environmental safety is improved, but smoke production remains high
Solution Approach 1:
The invention employs a composite system of three non-halogenated flame retardants (aluminium diethyl phosphinate, zinc diethyl phosphinate, and phosphite) that work synergistically. This composite non-halogenated system simultaneously achieves environmental safety and smoke suppression, overcoming the limitation of single non-halogenated additives that produce excessive smoke.
Solution Approach 2:
Phosphite acts as an intermediary component in the flame retardant system, mediating between the aluminium and zinc phosphinates to achieve both smoke suppression and flame retardancy. The phosphite component specifically addresses the smoke production issue while maintaining the non-halogenated environmental safety profile.
Data Source
AI summary
The invention provides a copolyetherester compositions that are resistant to burning and which show reduced smoke production when exposed to heat or flame.