甲基丙烯酸羟乙酯改性水性聚氨酯的合成与应用

doi:10.3969/j.issn.0438-1157.2013.06.047

化工学报 ›› 2013, Vol. 64 ›› Issue (6): 2257-2263.DOI: 10.3969/j.issn.0438-1157.2013.06.047

• 材料化学工程与纳米技术 • 上一篇下一篇

甲基丙烯酸羟乙酯改性水性聚氨酯的合成与应用

李金亮, 田艳红, 张学军, 李晨, 胡琪

北京化工大学有机无机复合材料国家重点实验室,北京 100029

收稿日期:2012-10-15 修回日期:2013-01-16 出版日期:2013-06-05 发布日期:2013-06-05
通讯作者: 田艳红
作者简介:李金亮(1986—),男,硕士研究生。

Synthesis and application of hydroxyethyl methacrylate modified waterborne polyurethane

LI Jinliang, TIAN Yanhong, ZHANG Xuejun, LI Chen, HU Qi

State Key Laboratory of Organic & Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China

Received:2012-10-15 Revised:2013-01-16 Online:2013-06-05 Published:2013-06-05

摘要/Abstract

摘要： 以甲苯二异氰酸酯(TDI)和聚乙二醇(PEG)为原料,选用2,2-二羟甲基丁酸(DMBA)为扩链剂合成水性聚氨酯(WPU),通过甲基丙烯酸羟乙酯(HEMA)对水性聚氨酯进行封端,采用自乳化法,制备了HEMA改性水性聚氨酯乳液(HEMA-WPU)。通过红外、核磁和热重法(TG)分别表征了WPU和HEMA-WPU的分子结构及其热分解行为。结果表明,与WPU相比,HEMA-WPU的耐热性能明显提高,用该乳液上胶处理后的碳纤维/环氧树脂复合材料的层间剪切强度(ILSS)与未上胶的样品相比提高了7.5%,达到64.5 MPa。

关键词: 甲基丙烯酸羟乙酯, 改性, 水性聚氨酯, 耐热性, 碳纤维上胶剂

Abstract: Waterborne polyurethane (WPU) was prepared by using toluene diisocynate (TDI) and polyethylene glycol (PEG) as raw materials, and 2,2-dimethylolbutyric acid as chain extender. Hydroxyethyl methacrylate (HEMA) was used to terminate WPU.The self-emulsifying method was adopted to prepare HEMA-grafted WPU (HEMA-WPU) emulsion.Fourier transform infrared (FT-IR) and nuclear magnetic resonance (NMR) and thermogravimetric analysis (TG) were used to characterize the molecular structure and thermal endurance of HEMA-WPU.Compared with WPU, the thermal endurance of HEMA-WPU was raised obviously.The inter-laminar shear strength (ILSS) of carbon fiber/epoxy resin composite samples after sizing by the prepared emulsion was raised by 7.5%, reaching 64.5 MPa, compared with the un-sized samples.

Key words: hydroxyethyl methacrylate(HEMA), modification, waterborne polyurethane(WPU), thermal endurance, carbon fiber sizing agent

中图分类号:

TQ323.8

李金亮, 田艳红, 张学军, 李晨, 胡琪. 甲基丙烯酸羟乙酯改性水性聚氨酯的合成与应用[J]. 化工学报, 2013, 64(6): 2257-2263.

LI Jinliang, TIAN Yanhong, ZHANG Xuejun, LI Chen, HU Qi. Synthesis and application of hydroxyethyl methacrylate modified waterborne polyurethane[J]. CIESC Journal, 2013, 64(6): 2257-2263.

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甲基丙烯酸羟乙酯改性水性聚氨酯的合成与应用

Synthesis and application of hydroxyethyl methacrylate modified waterborne polyurethane

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