Polymer flame-retardant material and preparation method thereof

By modifying the composite flame-retardant system of polyurethane, luteolin and cerium dioxide, the problems of flammability and photoaging of polyurethane materials were solved, and the flame-retardant and weather-resistant properties of polymer materials were improved.

CN122234594APending Publication Date: 2026-06-19LULIANG UNIV
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Patent Information

Application Number
CN202610719471.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-25
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Polyurethane elastomer materials are flammable and produce toxic gases when burning, which affects visibility and interferes with rescue work. They also undergo photo-aging degradation under ultraviolet light, resulting in decreased durability.

Method used

By mixing modified polyurethane, modified luteolin, and modified cerium dioxide, a phosphorus-luteolin composite flame retardant system is formed. Methyl cinnamate structure is grafted onto the side chain of polyurethane and triazole structure is loaded onto the surface of cerium dioxide to improve flame retardancy and weather resistance.

Benefits of technology

It achieves good flame retardant and weather resistance of polyurethane materials, improves combustion char rate and ultraviolet absorption capacity, and improves the mechanical properties and aging stability of materials.

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Abstract

The invention discloses a macromolecular flame-retardant material and a preparation method thereof, and relates to the technical field of macromolecular materials. When the high-molecular flame-retardant material is prepared, epoxy chloropropane is used as a bridging agent, and 2-(diphenylphosphino) ethylamine is grafted to luteolin to prepare modified luteolin; the preparation method comprises the following steps: polymerizing polypropylene glycol, dimethylolpropionic acid, 1, 4-butanediol and isophorone diisocyanate to prepare polyurethane; the preparation method comprises the following steps: carrying out a reaction on polyurethane and methyl 4-amino cinnamate to prepare modified polyurethane; the preparation method comprises the following steps: sequentially reacting cerium dioxide with gamma-glycidyl ether oxypropyl trimethoxy silane and 3-amino-1, 2, 4-triazole, so as to obtain modified cerium dioxide; the modified polyurethane, the modified luteolin and the modified cerium dioxide are mixed and internally mixed, and the high-molecular flame-retardant material is prepared. The high-molecular flame-retardant material prepared by the preparation method disclosed by the invention shows excellent flame-retardant and weather-resistant capabilities.
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