阴离子杂化共聚反应制备含硫本征阻燃聚合物

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中图分类号：0633.3 文献标志码：A DOI：10.3969/j.issn.1003-9015.2025.03.015

Abstract：Sulfur（ S8 ）is an inevitable byproduct arising from the refinement of petroleum and purification of natural gas.Itssurplus capacity has resulted in significant environmental polution and safety concerns.Direct conversion of S8 into polymeric materials offers a sustainable solution to this excess capacity. Here，sulfur-containing polymer，P（S-BMI），was successfully prepared by one-step anionic hybrid copolymerization of N，N′ -（4， 4′ -methylenediphenyl）bismaleimide（BMI）with S8 at room temperature. Fourier Transform Infrared Spectroscopy （FTIR） and X-ray Photoelectron Spectroscopy（XPS）showed that the copolymer P（S-BMI）with crosslinked structures contained sulfur in the range of 25%～40% . Typical tensile testing showed that P（S-BMI） exhibited the max tensile strength of 36.5MPa ，and could be reprocessed.Furthermore，P（S-BMI） achieved the highest“V-O”rating in theUL-94 flame-retardancy test，which couldbe atributed toa synergistic effect combining gas phase isolation andfree radical quenching during combustion.This work demonstrates a novel approach for thesustainable utilizationof elemental sulfur and provides a pathway towards thedevelopment of high-performance，flame-retardant polymers，advancing both environmental' sustainability and materials science.

Key Words：sulfur；maleimide；intrinsic flame retardant； anionic hybrid polymerization

1前言

单质硫，也叫硫磺，广泛分布于地壳中，储量丰富。（剩余10298字）