耐热高透明聚醚砜醚酮酮的合成和表征

doi:10.19894/j.issn.1000-0518.200371

摘要/Abstract

摘要： 以芳醚单体4,4'-二苯氧基二苯砜(DPODPS)与1,4-环己二甲酰氯(CHDC),在以路易斯酸无水三氯化铝(AlCl₃)为催化剂下进行亲电取代缩合聚合,制备了一种大分子主链含环己基和砜基的聚醚砜醚酮酮(PESEKK)树脂。结果表明,PESEKK树脂为非晶态结构,玻璃化转变温度(T_g)为204 ℃,热分解温度(T_d)为440 ℃,具有优异的热性能;树脂可溶解于二甲基亚砜、N-甲基吡咯烷酮、氯仿等有机溶剂中,并可涂膜制得高透明薄膜,薄膜紫外光透过截止波长为350 nm,在可见光范围内透过率大于80%;薄膜拉伸强度为72 MPa,弹性模量为1.89 GPa,力学性能较好。

关键词: 聚醚砜醚酮酮, 透明, 耐热

Abstract: A kind of heat-resistant and transparent poly(ether sulfone ether ketone ketone) (PESEKK) containing cyclohexyl and sulfonyl was prepared by electrophilic substitution condensation polymerization from 4,4'-diphenoxy diphenylsulfone (DPODPS) and cyclohexyl-1,4-dicarboxylchloride (CHDC) with AlCl₃ as the catalyst. The experimental results show that the PESEKK resin is amorphous with good thermal properties. The glass transition temperature (T_g) and thermal decomposition temperature (T_d) are 204 and 440 ℃, respectively. The resin can be dissolved in dimethyl sulfoxide (DMSO), N-methyl pyrrolidone (NMP), chloroform (CDCl₃) and other organic solvents, and can be coated to prepare highly transparent film. The cut-off wavelength of ultraviolet light transmission of the film is 350 nm and the transmittance is more than 80% in the visible light range. The film has good mechanical properties with a tensile strength of 72 MPa and a tensile modulus of 1.89 GPa.

Key words: Poly(ether sulfone ether ketone ketone), Transparent, Heat-resistant

中图分类号:

O631.5

刘勇军, 胡梦云, 王晗, 刘晓玲, 盛寿日, 侯豪情. 耐热高透明聚醚砜醚酮酮的合成和表征[J]. 应用化学, 2021, 38(8): 933-937.

LIU Yong-Jun, HU Meng-Yun, WANG Han, LIU Xiao-Ling, SHENG Shou-Ri, HOU Hao-Qing. Synthesis of Heat-resistant and Transparent Poly(Ether Sulfone Ether Ketone Ketone)[J]. Chinese Journal of Applied Chemistry, 2021, 38(8): 933-937.

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