Flame retardant composition
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Solution Overview
Problem
Current ammonium polyphosphate-based flame retardants face challenges in processability during mixing with polymer base materials, often resulting in unwanted deposits on equipment, which are costly and time-consuming to remove, and many halogenated alternatives are prohibited due to health and environmental concerns.
Innovation Solution
A flame retardant composition comprising a blend of ammonium polyphosphate and a silane functionalized ethylene copolymer, which provides improved processability and meets industry standards for flame retardancy without using halogenated compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ammonium polyphosphate is used as a flame retardant, then flame retardant properties are achieved, but processability deteriorates due to plate out during extrusion
Solution Approach 1:
The patent uses a silane-functionalized polyethylene graft copolymer as a carrier material (intermediary) to carry the ammonium polyphosphate flame retardant. This carrier prevents direct contact between the flame retardant and metal extrusion equipment, eliminating plate out while maintaining flame retardant effectiveness through the carrier's compatibility with the polymer base material.
2Reliability
If halogenated flame retardants are used, then flame retardant performance is excellent, but health and environmental safety deteriorates
Solution Approach 1:
The patent changes the chemical composition parameter by replacing halogenated compounds with ammonium polyphosphate, a halogen-free inorganic flame retardant. This substitution maintains flame retardant performance while eliminating the harmful health and environmental effects associated with halogenated substances.
3Reliability
If ammonium polyphosphate is mixed with polymer base material, then flame retardancy is achieved, but equipment maintenance cost and time increase due to deposit removal
Solution Approach 1:
The silane-functionalized polyethylene graft copolymer serves as an intermediary carrier that prevents ammonium polyphosphate from directly depositing on metal extrusion equipment surfaces. This eliminates the need for time-consuming equipment cleaning and maintenance while preserving the flame retardant function.
4Reliability
If ammonium polyphosphate is mixed with polymer base material, then flame retardancy is achieved, but production cost increases due to equipment downtime for cleaning
Solution Approach 1:
By introducing the silane-functionalized polyethylene graft copolymer as a carrier, the patent prevents plate out on equipment, thereby eliminating production interruptions for cleaning. This maintains continuous production operations and improves overall productivity while preserving flame retardant effectiveness.
Data Source
AI summary
The invention provides aflame retardant composition comprising and ammonium polyphosphate a silane functionalised ethylene copolymer.