| 聚氨酯树脂/丁腈橡胶接枝型遇水膨胀橡胶的性能研究 |
| Study of preparation and properties for PU/NBR Chemical-grafted water swelling rubber |
| 投稿时间：2015-12-22 修订日期：2015-12-22 |
| DOI： |
| 中文关键词: 聚氨酯 丁腈橡胶 化学接枝 吸水膨胀行为 |
| 英文关键词: Polyurethane NBR Chemical-grafted Repeated Water Expansion Properties |
| 基金项目:国家自然科学基金(21176126),山东省自然科学基金(ZR2013EMM007),国家科技重大专项(2011ZX05011) |
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| 中文摘要: |
| 先用逐步聚合反应法以聚乙二醇(PEG)、甲苯二异氰酸酯(TDI)、甲基丙烯酸羟乙酯(HEMA)等为原料制备出吸水性聚氨酯大分子反应型树脂(PU)。该树脂与丁腈橡胶(NBR)混合,制备出PEG接枝NBR主链的新型耐盐型遇水膨胀橡胶(WSR)。论文研究了PU用量、聚丙烯酸钠(SAP)用量、过氧化二异丙苯(DCP)用量及循环浸泡次数对WSR力学性能和最大质量膨胀倍率(ΔWe)的影响。研究结果表明,随着吸水树脂中PU树脂相对含量的升高,WSR力学性能提高,ΔWe增大。当PU完全代替SAP时,DCP含量越高其力学性能及ΔWe越低,当DCP含量为2份时ΔWe保持在2.04倍以上,WSR的重复吸水膨胀倍率保持在98%以上。 |
| 英文摘要: |
| Water-absorbing polyurethane (PU) reactive macromolecular resin was synthesized by step-reaction polymerization reaction with polyethylene glycol, toluene diisocyanate and hydroxyethyl methacrylate as raw materials. The salt-resistance water-swellable NBR rubbers were processed by graft radical reaction of PU resin with the double bond of nitrile butadiene rubber. The influence of the relative content of PU resin among the mixture of PU with SAP and DCP on the mechanical properties and the maximum mass swelling ratio(ΔWe) of the WSR were studied, respectively, the repeat water swellable efficiency was also studied. The results showed that with an increase of PU content in the mixture of PU and SAP, both the mechanical properties and the maximal mass swelling ratio(ΔWe) of WSR increased. When SAP resin was replaced by PU, the higher content of DCP in WSR, the lower overall properties. When the content of DCP was 2 phr, the ΔWekeep above 2.04. The repeatable water swellable efficiency kept above 98%. |
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