| 工艺参数对聚脲甲醛包覆环氧树脂微胶囊物性的影响 |
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| 引用本文： | 李岚,袁莉,梁国正,谢建强. 工艺参数对聚脲甲醛包覆环氧树脂微胶囊物性的影响[J]. 复合材料学报, 2006, 23(5): 51-57 |
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| 作者姓名： | 李岚 袁莉 梁国正 谢建强 |
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| 作者单位： | 西北工业大学,理学院,应用化学系,西安,710072;西北工业大学,理学院,应用化学系,西安,710072;西北工业大学,理学院,应用化学系,西安,710072;西北工业大学,理学院,应用化学系,西安,710072 |
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| 基金项目： | 西北工业大学校科研和教改项目 |
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| 摘 要： | 以聚脲甲醛为囊壁、双酚A 型环氧树脂( E-51) 和正丁基缩水甘油醚(501 # ) 混合物为囊芯, 采用原位聚合法合成聚脲甲醛包覆环氧树脂体系微胶囊。通过L16 (45 ) 正交试验研究了原料配比、终点p H 值、搅拌速率、酸化时间、平均升温速率等工艺参数对微胶囊的合成状态、粒径大小和分布的影响规律, 并利用扫描电子显微镜(SEM) 、光学2摄影显微镜(OM) 进行表征。结果表明: 原料配比和终点p H 值对微胶囊的合成状态有显著影响;适当延长酸化时间和增加升温速率, 有利于增加微胶囊表面的粗糙度; 随着搅拌速率的增加, 微胶囊的粒径减小、分布变窄。优化的工艺条件为: 原料配比为0. 8∶1 , 终点p H = 2. 0～4. 0 , 酸化时间为2. 0～3. 0 h , 升温速率为0. 17～0. 25 ℃·min -1 , 搅拌速率为325～350 r·min -1 。
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| 关 键 词： | 微胶囊 聚脲甲醛 环氧树脂 工艺参数 表面形貌 粒径 |
| 文章编号： | 1000-3851（2006）05-0051-07 |
| 收稿时间： | 2005-10-09 |
| 修稿时间： | 2005-10-092006-01-16 |
Effects of processing parameters on physical properties ofpoly ( urea-formaldehyde) microcapsules of epoxy resin |
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| LI Lan,YUAN Li,LIANG Guozheng,XIE Jianqiang. Effects of processing parameters on physical properties ofpoly ( urea-formaldehyde) microcapsules of epoxy resin[J]. Acta Materiae Compositae Sinica, 2006, 23(5): 51-57 |
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| Authors: | LI Lan YUAN Li LIANG Guozheng XIE Jianqiang |
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| Affiliation: | Department of Applied Chemistry| College of Science| Northwestern Polytechnical University| Xipan 710072| China |
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| Abstract: | A series of microcapsules were prepared by in-si tu polymerization with poly (urea-formaldehyde) as theshell material and the mixture of epoxy resin E-51 and butyl glycidyl ether (501 # ) as the core material. The effect sof the processing parameters , including the mass ratio of core material to shell material , final p H value , agitationrate , acidification time and heating rate , on the state of microencapsulation , the microcapsule size and it s dist ribution were discussed by L16 (45 ) orthogonal experiment . The physical properties of microcap sules were investigatedusing scanning elect ron microscopy (SEM) and optical-photographic microscopy (OM) . The state of microencapsulation is dramatically dependent on the mass ratio of core material to shell material and final p H value. Themicrocapsule surface morphologies are better when the acidification time and heating rate are properly increased.The microcap sule size decreases and it s dist ribution narrows with the increasing of agitation rate. The optimum conditions are as follows : the mass ratio of core material to shell material is 0. 8∶1 , final p H value is 2. 0～4. 0 , acidification time is 2. 0～3. 0 h , heating rate is 0. 17～0. 25 ℃·min-1 , and agitation rate is 325～350 r·min -1 . |
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| Keywords: | microcapsule poly(urea-formaldehyde) epoxy resin processing parameters surface morphology microcapsule size |
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