Polyamide elastomer as well as preparation method and application thereof

By alternating the bio-based polyamide prepolymer and polytrimethylene ether glycol and isosorbide-based poly(arylene ether sulfone) block structures, the problem of poor interfacial compatibility of bio-based polyamide elastomers was solved, and a synergistic improvement in high-temperature stability and excellent toughness was achieved.

CN120590627AActive Publication Date: 2025-09-05JIANGSU SHENYUAN NEW MATERIALS CO LTD
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Patent Information

Application Number
CN202511099589.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-07
Publication Date
2025-09-05
Estimated Expiration
2045-08-07

AI Technical Summary

Technical Problem

Among bio-based polymer materials, how to construct polyamide elastomers with high-temperature stability, excellent toughness and strength without relying on petroleum-based monomers, and solve the problems of poor interface compatibility between hard segments and soft segments and uncontrollable microphase separation structure.

Method used

An alternating arrangement of bio-based polyamide prepolymers and bio-based polytrimethylene ether glycol and isosorbide-based poly(arylene ether sulfone) block structures is used, which are connected by chemical bonds to form a molecular chain structure that is both rigid and flexible. 2,5-thiophenedicarboxylic acid is introduced to enhance the rigidity of the hard segment, and the ratio of soft and hard segments is adjusted to form a controllable microphase separation structure.

Benefits of technology

The heat resistance, mechanical properties and elastic recovery ability of the material are improved, and the synergistic improvement of the hard segment and soft segment is achieved to form a high-performance polyamide elastomer.

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Abstract

The invention belongs to the technical field of bio-based high polymer materials, and particularly relates to a polyamide elastomer as well as a preparation method and application thereof. The polyamide elastomer provided by the invention comprises hard-segment polymers and soft-segment polymers which are alternately arranged, the polyamide elastomer has a structure as shown in a formula I; the hard segment is a bio-based polyamide prepolymer and has a structure as shown in a formula II; the number average molecular weight of the hard segment polymer is 1000 to 5000 g / mol; and the amount of substance of the hard segment polymer in the elastomer accounts for 10%-50%. The polyamide elastomer provided by the invention has good heat resistance and mechanical properties. And the formula I of the # imgabs0 # is shown in the specification.
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Citation Information

Patent Citations

  • Tough 2, 5-thiophenedicarboxylic acid-based copolyester material and preparation method thereof

    CN113493562A

  • Bio-based thermoplastic polyether ester elastomer as well as preparation method and application thereof

    CN116655900A

  • Preparation method and application of high-air-tightness bio-based thiophene polyester elastomer material

    CN118027377A

  • Polymer compositions based on a bio-sourced polyarylene ether sulfone

    EP3088442A1

  • Aromatic amide-ester block copolymer and method for producing the same

    JP2005060429A

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