| 第 52 卷第 3 期 |  | Vol. 52 No. 3 | | 2022 年 6 月 | Jun 2022 |
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所屬欄目：功能材料
相反轉法水性環(huán)氧樹(shù)脂的制備及其固化工藝優(yōu)化 |
| 劉 振，吳道新*，肖忠良，楊璋軍，蔣崢瑾
（長(cháng)沙理工大學(xué) 化學(xué)化工學(xué)院，湖南 長(cháng)沙 410114） |
| 摘 要：選用吐溫60、聚乙二醇4000與環(huán)氧樹(shù)脂E-44反應合成了水性環(huán)氧樹(shù)脂乳化劑WT6P4，再將其以相反轉法乳化制備水性環(huán)氧樹(shù)脂乳液WT6P4-E44。通過(guò)紅外光譜證實(shí)了環(huán)氧基與醇羥基發(fā)生了反應，生成了醚鍵親水基團，探討了相反轉過(guò)程的電導率的變化，研究了乳化劑用量、攪拌速度及反應溫度對乳液粒徑分布和穩定性的影響，采用差示掃描量熱法研究WT6P4-E44的固化行為。結果表明：在乳化劑用量為16%，攪拌速度為600 r/min，相反轉溫度為65 ℃時(shí)的條件下，制得的乳液粒徑最小為53 nm，且各項穩定性較好。通過(guò)外推法確定固化工藝條件為60 ℃ 1 h、100 ℃ 2 h以及150 ℃ 1 h。 |
| 關(guān)鍵詞：環(huán)氧樹(shù)脂；相反轉法；粒徑；固化動(dòng)力學(xué) |
| 中圖分類(lèi)號：TQ630 文獻標識碼：A 文章編號：1009-9212（2022）03-0053-08 |
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| Preparation of Waterborne Epoxy Resin by Phase Inversion Method and the Optimization of Its Curing Process |
| LIU Zhen, WU Dao-xin*, XIAO Zhong-liang, YANG Zhang-jun, JIANG Zheng-jin
(School of Chemistry and Chemical Engineering, Changsha University of Science & Technology, Changsha 410114, China) |
| Abstract：Waterborne epoxy resin emulsifier WT6P4 was synthesized from the reaction of Tween 60, PEG 4000 and epoxy resin E-44, and then it was emulsified by a reverse conversion method to obtain waterborne epoxy resin emulsion WT6P4-E44. The reaction between the epoxy group and the al-cohol hydroxyl groups was confirmed by infrared spectroscopy as the formation of hydrophilic groups of ether bonds. The changes of electrical conductivity in the reverse conversion process were investigated, and the effects of emulsifier dosage, stirring speed and reaction temperature on the particle size distribution and stability of the emulsion were studied. The results showed that the stability of the emulsions with a minimum particle size of 53 nm were good under the conditions of 16% emulsifier dosage, 600 r/min stirring speed and 65 ℃ phase inversion temperature. The curing conditions including 1 h at 60 ℃ , then 2 h at 100 ℃ and at last 1 h at 150 ℃ were determined by extrapolation. |
| Key words：epoxy resin; phase inversion; particle size; curing kinetics |
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基金項目：湖南省戰略性新型重大項目（2019GK4041）。
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作者簡(jiǎn)介：劉 振（1994—），男，江西宜春人，碩士，研究方向：精細電子化學(xué)品。
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聯(lián) 系 人：吳道新，教授，研究方向：精細電子化學(xué)品（E-mail：daoxinwu@126.com）。
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收稿日期：2022-05-09
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