Imidazole-loaded microcapsules as latent curing agent with superior solvent stability and shelf life
Imidazole-loaded microcapsules as latent curing agent with superior solvent stability and shelf life
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咪唑微胶囊作为潜在固化剂，具有优异的溶剂稳定性和保质期
DOI：
10.1007/s10853-020-04536-3
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发表时间：
2020-03
影响因子：
4.5
通讯作者：
Zhang Qiuyu
中科院分区：
文献类型：
--
作者：
Xue Ying;Li Chunmei;Tan Jiaojun;Su Zhengzhou;Yang Yumin;Zhang Guoxian;Zhang Qiuyu
成功制备了一种新型双壳结构微胶囊型热潜固化剂。采用溶剂蒸发法将1-苄基-2-甲基咪唑（1B2MZ）用聚甲基丙烯酸甲酯-丙烯酸正丁酯（PMMA/BA）包封，作为聚多巴胺（PDA）沉积的初级微胶囊（pmc）。通过调整BA与MMA单体的质量比，获得了不同玻璃化转变温度（Tg, 116.7 ~ 57.2℃）和壳材料PMMA/BA的热性能。选择BA比为20 wt%的PMMA/BA作为聚丙烯酸甲酯的外壳，其温度适宜（92.33℃），耐热性较好。（分解温度222.83℃）所制得的PMCs和双壳微胶囊（DMCs）具有良好的球形结构，并通过傅里叶变换红外光谱证实了DMCs的化学结构。热重分析表明，PMCs和DMCs的核心含量分别为11.95%和11.37%。经PDA包覆后，微胶囊在弱极性（甲苯）和高极性（二氯甲烷、DCM和丙酮）溶剂中的耐溶剂性显著提高。室温保存4个月以上时，dmc与稀释后的环氧树脂混合物可在120℃下固化1小时。
A novel microcapsule-type thermal latent curing agent with a double-shell structure was successfully fabricated. 1-Benzyl-2-methylimidazole (1B2MZ) was encapsulated by poly(methyl methacrylate-n-butyl acrylate) (PMMA/BA) using the solvent evaporation method, which served as the primary microcapsules (PMCs) to be deposited by polydopamine (PDA). Various glass transition temperatures (Tg, from 116.7 to 57.2 °C) and thermal properties of shell material PMMA/BA were obtained by tuning the mass ratio of BA to MMA monomer. PMMA/BA with 20 wt% of BA ratio was selected as the shell of PMCs for its appropriateTg(92.33 °C) and relatively good thermal resistance. (Decomposition temperature was 222.83 °C.) The obtained PMCs and the double-shell microcapsules (DMCs) had good spherical shape, and the chemical structure of DMCs was confirmed by Fourier transform infrared spectra. Thermogravimetric analysis indicated that the core contents of PMCs and DMCs were 11.95 and 11.37%, respectively. After being coated by PDA, the solvent resistances of microcapsules in weak-polar (toluene) and high-polar (dichloromethane, DCM and acetone) solvents were significantly improved. When storing at room temperature for more than 4 months, the mixture of DMCs and the diluted epoxy could be cured at 120 °C for 1 h.
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影响因子：
5.5
作者：
Soojin Park;Hyun-Chel Kim;‡. A. W. Lee;D. Suh
通讯作者：
Soojin Park;Hyun-Chel Kim;‡. A. W. Lee;D. Suh
影响因子：
6.1
作者：
F. Jin;Soojin Park
通讯作者：
F. Jin;Soojin Park
影响因子：
6.6
作者：
Ruyam Alev Parıldar;Adalet Ayça Biçen Ibik
通讯作者：
Ruyam Alev Parıldar;Adalet Ayça Biçen Ibik
外在增韧环氧/酸酐体系和内在增韧环氧/酸酐体系的固化行为和性能
影响因子：
3.5
作者：
Fan, Mengjin;Liu, Jialin;Zhang, Junying
通讯作者：
Zhang, Junying
DOI：
10.1002/pola.1990.080280404
发表时间：
1990-03
期刊：
Journal of Polymer Science Part A
影响因子：
--
作者：
M. Kaplan;A. Wayda;A. Lyons
通讯作者：
M. Kaplan;A. Wayda;A. Lyons