支化度对TAP-BFDA聚酰亚胺的性能影响研究

doi:10.11896/cldb.21030027

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Abstract Hyperbranchede polyimide improves the processability of aromatic polyimide by introducing hyperbranched structures into polymer chains,while maintaining their thermal properties;therefore,it has been widely used in the fields of aeronautics,astronautics and microelectronics. However,the effects of different degree of branching on the properties of hyperbranched polyimide have rarely been reported. In view of this,seven kinds of hyperbranched polyimides were synthesized based on TAP astriamine monomer and BFDA as dianhydride monomer,with the molar ratios of TAP ∶BFDA being 1∶1,1∶1.2,1∶1.4,1∶1.5,1∶1.6,1∶1.8,1∶2.The DB of the obtained polyimides indicated by ¹H NMR was 27%,36%,51%,60%,65%,69% and 74%. Results show that with DB increasing,the d-spacing values increase,while the M_n and inherent viscosities firstly increase then slightly decrease. All of the products exhibite good solubility. With DB increasing,the solubility increases. All of the obtained polyimides show good thermal properties. With DB increasing,T_g decreases,while 5% weight loss temperatures increases.

Key words： polyimides degree of branching solubility thermal property

Published: Online: 2022-12-09

CLC number:

O63

Fund:Science and Technology Project of Sichuan(2019YJ0376).

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	CHEN Ying
	WEI Yanhong
	CHEN Deping
	ZHOU Hongmei

Cite this article:

CHEN Ying,WEI Yanhong,CHEN Deping, et al. Effect of Degree of Branching on Performance of TAP-BFDA Polyimides[J]. Materials Reports, 2022, 36(23): 21030027-5.

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http://www.mater-rep.com/EN/10.11896/cldb.21030027 OR http://www.mater-rep.com/EN/Y2022/V36/I23/21030027

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