<rp id="vlnnu"></rp>
<em id="vlnnu"></em>
<rp id="vlnnu"></rp>
    1. <progress id="vlnnu"></progress><tbody id="vlnnu"></tbody>
    2. <button id="vlnnu"><acronym id="vlnnu"></acronym></button>
    3. <tbody id="vlnnu"></tbody>
      <tbody id="vlnnu"></tbody>
      一類含酚酞結構高可溶性聚酰亞胺的合成與性能
      DOI:
      作者:
      作者單位:

      常州大學 材料科學與工程學院

      作者簡介:

      通訊作者:

      中圖分類號:

      TQ323

      基金項目:

      江蘇省重點研發計劃(BE2022102);江蘇省高?;A科學研究重大項目(22KJA430002);江蘇省高校優勢學科資助計劃


      Synthesis and properties of a series of highly soluble polyimides containing phenolphthalein structures
      Author:
      Affiliation:

      Changzhou University

      Fund Project:

      • 摘要
      • |
      • 圖/表
      • |
      • 訪問統計
      • |
      • 參考文獻
      • |
      • 相似文獻
      • |
      • 引證文獻
      • |
      • 資源附件
      • |
      • 文章評論
        摘要:

        以百里香酚酞(5,5’-二異丙基-2,2’-二甲基酚酞)與對氟硝基苯為起始原料,通過芳香親核取代和氧化還原反應得到新型芳香二胺單體——5,5’-二異丙基-4,4’-二氨基苯氧基-2,2’-二甲基酚酞。進一步由該二胺單體分別與三種商品化芳香二酐(3,3’,4,4’-二苯醚四甲酸二酐、3,3’,4,4’-二苯酮四羧酸二酐和3,3’,4,4’-聯苯四甲酸二酐)以一步法高溫縮聚制備得到一系列同時含酚酞Cardo結構及異丙基和甲基側基的高可溶性聚酰亞胺(PI-1,PI-2和PI-3)。該類聚酰亞胺具有優異的溶解性,室溫下不僅可溶于高沸點溶劑N-甲基吡咯烷酮(NMP),N,N-二甲基乙酰胺(DMAc)和N,N-二甲基甲酰胺(DMF),二甲基亞砜(DMSO),而且能溶于低沸點溶劑氯仿(CHCl3),二氯甲烷(CH2Cl2)和四氫呋喃(THF),并可方便的通過其溶液澆筑制備得到系列高性能聚酰亞胺膜材料。所制聚酰亞胺膜材料具有較高的光學透明性,其截斷波長在324 nm~365 nm之間,450 nm的透過率在56%~78%之間。該類膜材料玻璃化轉變溫度在266 ℃~289 ℃,在N2和O2下的T10%的熱失重在430 ℃以上。其相關力學拉伸強度在77 MPa ~95 MPa,彈性模量在1.2 GPa ~1.5 GPa,1MHz下介電常數在2.79~3.01,表現出良好的力學性能和介電性能。

        Abstract:

        A new aromatic diamine monomer which contains phenolphthalein structure, isopropyl and methyl groups was prepared by thymolphthalein and 4-fluoronitrobenzene through aromatic nucleophilic substitution and oxidation-reduction reaction. Furthermore, a series of high soluble polyimides (PI-1, PI-2 and PI-3) were prepared through one step high temperature condensation polymerization with the new diamine monomer and three commoditized aromatic dianhydrides (4,4’-oxydiphthalic anhydride, 4,4’-arbonyldiphthalic anhydride and 4,4’-biphthalic anhydride). The obtained polyimides were not only dissolved in high boiling point solvents, such as NMP、 DMAc、DMF and DMSO at room temperature, but also could dissolve in low boiling point solvents, such as CHCl3, CH2Cl2 and THF. The polyimides could be easily prepared for film materials by solution casting method. The prepared polyimide films have better optical transparency. Their cut-off wavelengths were between 324 nm to 365 nm, and their transmittance at the wavelength of 450 nm was in the range of 56%~78%. Their glass transition temperatures were between 265 ℃ and 288 ℃, and their temperatures of 10% weight loss were both beyond 430 ℃ in N2 and O2. Meanwhile, these polyimides exhibited good mechanical and dielectric properties. Their tensile strength and elongation at break ranged from 77 MPa to 95 MPa and 9.1% to 13%, and their dielectric constants were in the range of 2.79~3.01 at 1MHz.

        參考文獻
        相似文獻
        引證文獻
      引用本文

      蔡華娟,耿凱,汪稱意,李堅,任強.一類含酚酞結構高可溶性聚酰亞胺的合成與性能[J].精細化工,2023,40(6):

      復制
      分享
      文章指標
      • 點擊次數:
      • 下載次數:
      • HTML閱讀次數:
      • 引用次數:
      歷史
      • 收稿日期:2022-09-17
      • 最后修改日期:2022-11-22
      • 錄用日期:2022-12-01
      • 在線發布日期: 2023-05-11
      • 出版日期:
      2021国产麻豆剧果冻传媒免费_久久国产成人美女_9热精品视频在线观看_欧美A级毛欧美1级A大片
      <rp id="vlnnu"></rp>
      <em id="vlnnu"></em>
      <rp id="vlnnu"></rp>
      1. <progress id="vlnnu"></progress><tbody id="vlnnu"></tbody>
      2. <button id="vlnnu"><acronym id="vlnnu"></acronym></button>
      3. <tbody id="vlnnu"></tbody>
        <tbody id="vlnnu"></tbody>