一种高频低介电常数改性聚苯醚及其制备工艺
By introducing 3,5-di-tert-butylsalicylic acid groups at the ends of polyphenylene ether (PPE) molecular chains, and utilizing the asymmetric steric hindrance structure and hydrophobic field to induce nanoscale closed-pore structures, the problems of high dielectric loss and decreased thermomechanical properties of PPE in high-frequency communication were solved, thereby improving dielectric properties and thermal stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN HENGYI NEW MATERIAL CO LTD
- Filing Date
- 2026-04-03
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies, while maintaining the rigidity of the polyphenylene ether backbone, make it difficult to reshape the macromolecular end topology, resulting in high dielectric loss in high-frequency communication. Furthermore, the chemical reaction process is difficult to achieve precise self-limitation at the reaction endpoint, affecting the stability and thermomechanical properties of the material in humid and hot environments.
By introducing 3,5-di-tert-butylsalicylic acid group into the end of the terminal hydroxyl polyphenylene ether molecular chain, the dipole orientation is restricted by the asymmetric steric hindrance structure, and a nanoscale closed-pore structure is constructed by inducing the local hydrophobic field, thereby realizing the self-limiting mechanism of the reaction and optimizing the dielectric properties.
By reducing dielectric loss under high-frequency electric fields, the thermal stability and dielectric stability of materials are improved, thus resolving the contradiction between improving dielectric properties and thermomechanical rigidity and ensuring the reliability of materials in humid and hot environments.
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Figure CN121949779B_ABST