科研之友
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摘要
Current low dielectric materials can't be recycled, causing significant serious environmental pollution. In this work, to create a type of recyclable and reprocessable low dielectric materials, pyridine was incorporated into styrene-based polymers by copolymerization. Subsequently, this copolymer was cross-linked by incorporating zinc ions and forming coordination bonds. These resins exhibited low dielectric constant (epsilon = approximate to 3) and good tensile strength (approximate to 40 MPa) and modules (approximate to 700 MPa). Meanwhile, these resins can be decrosslinked and dissolved in tetrahydrofuran and be reprocessed at above 200 degrees C. After 3 cycles of reprocessing, the low epsilon and mechanical properties of the styrene resins can still be preserved, indicating a good recyclability of these new styrene-based resins.
