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引入不对称结构对聚酰亚胺模塑料加工性能的改善

朱丹阳1,王瑛2,张春华1,吴作林1,韩宝春1,杨正华1*   

  1. (1.中国科学院长春应用化学研究所 长春 130022；2.陕西宝成航空仪表有限责任公司 宝鸡 721006)
  • 收稿日期:2012-04-13 修回日期:2012-06-28 出版日期:2013-02-10 发布日期:2013-02-10
  • 通讯作者: 杨正华，研究员; Tel:0431-85262272; E-mail:zhhyang@ciac.jl.cn; 研究方向：高性能聚酰亚胺材料
  • 基金资助:
    吉林省科技发展计划项目（20106022）

Processability Improvement of Polyimide by Adding Asymmetric Structure in Molecular Chain

ZHU Danyang1, WANG Ying2, ZHANG Chunhua1, WU Zuolin1, HAN Baochun1, YANG Zhenghua1*   

  1. (1.Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;
    2.Avic Shaanxi Baocheng Aviation Instrument Corporation Limited,Baoji 721006,China)
  • Received:2012-04-13 Revised:2012-06-28 Published:2013-02-10 Online:2013-02-10

PDF

1279

被引次数

1

摘要： 采用联苯四酸二酐（BPDA）与4,4′-二胺基二苯醚(4,4′-ODA)和3,4′-二胺基二苯醚(3,4′-ODA)聚合后，经亚胺化，制备了一系列二胺不同配比的高强度易加工的聚酰亚胺模塑料。 并对其流变性能、力学性能及热学性能进行测试。 结果表明，随着3,4′-ODA含量的增加模塑料的冲击强度没有大的改变,而流变性能随3,4′-ODA含量的增加而提高，w(3,4′-ODA)在50%时，玻璃化转变温度为275 ℃，材料的冲击强度为141 kJ/m2。 模压压力为20 MPa时加工性能优异。

关键词: 联苯二酐, 聚酰亚胺, 模塑料, 流变性能

Abstract: A series of high-strength and processable polyimide(PI) moulding compounds with different content of diamine was prepared from 3,3′,4,4′-biphenyl tetracarboxylic diandhydride(BPDA) and 4,4′-diaminodiphenyl ether(4,4′-ODA), 3,4′-diaminodiphenyl ether(3,4′-ODA) through chemical imiidization. The rheological,mechanical and thermal resistance properties of the PI moulding compounds were investigated. With the increasing of 3,4′-ODA content, the impact strength of the PI could be maintained without dramatic change. The rheological properties of the PI were enhanced and the glass transition temperature can reach 275 ℃. The impact strength of the PI is about 141 kJ/m2. Processability of the PI is superior at 20 MPa.

Key words: biphenyl tetracarboxylic diandhydride, polyimide, moulding compound, rheological property

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