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投稿时间：2011-01-04
投稿时间：2011-01-04
中文摘要: 制备了丙烯酸-β-羟乙酯(HEA)封端的聚氨酯(PUA)大分子单体，采用正庚烷作致孔剂，用悬浮聚合法合成了聚氨酯-苯乙烯(PUA-St)及聚氨酯-苯乙烯-甲基丙烯酸乙酯-二乙烯基苯（PUA-St-EMA-DVB） AB-交联共聚物大孔树脂颗粒。SEM表明：合成的PUA-St-EMA-DVB颗粒含有规整的、孔径较大的孔洞，而PUA-St共聚物的孔洞则较小且不规整。水声性能测试表明，该柔性大孔树脂的加入能显著改善聚氨酯-环氧树脂(PU-EP)基体的水声吸声性能。当m(Resin)∶m(PU-EP)=20∶100时，添加PUA-St-EMA-DVB颗粒改性的基体比添加PUA-St改性的基体具有更好的水声吸声性能，平均吸声系数由0.25增加到0.81，最大值由0.58增加到0.98。
Abstract:β-Hydroxyethyl acrylate(HEA)-terminated polyurethane acrylate (PUA) macromonomer was synthesized and its macroporous AB-crosslinked copolymer particles with styrene(St) and a combination of styrene, ethyl methacrylate(EMA) and divinylbenzene(DVB) were prepared by suspension polymerization using n-heptane as a porogen. The SEM showed that synthetical copolymer resin particles of PUA-St-EMA-DVB contained regular and large pores while those of PUA-St copolymer appeared irregular and smaller pores. The results of underwater acoustic property tests showed that the modified PU-EP blend matrix with PUA-St-EMA-DVB copolymer resin particles had better underwater acoustic absorbing performance than those with PUA-St when the mass ratio of each kinds of particles to PU-EP blend matrix was 20 to 100, with this adding amount the average acoustic absorption coefficient of PU-EP blend matrix with PUA-St-EMA-DVB copolymer resin particles increased from 0.25 to 0.81, and the maximum value increased from 0.58 to 0.98.
keywords: polyurethane macromonomer styrene ethyl methacrylate macroporous resin underwater acoustic property
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基金项目:国家自然科学基金资助项目(50979110)
| 作者 | 单位 | |
| 孙卫红 | 海军工程大学化学与材料系，武汉 430033 | |
| 晏欣 | 海军工程大学化学与材料系，武汉 430034 | yanxinh@189.cn |
| 朱锡 | 海军工程大学船舶与海洋工程系，武汉 430035 | |
| 周立清 | 海军工程大学化学与材料系，武汉 430033 | |
| 周赟 | 海军工程大学化学与材料系，武汉 430034 |
| Author Name | Affiliation | |
| SUN Wei-hong | ||
| YAN Xin | yanxinh@189.cn | |
| ZHU Xi | ||
| ZHOU Li-qing | ||
| ZHOU Yun |
引用本文：
孙卫红,晏欣,朱锡,周立清,周赟.基于HEA封端聚氨酯大孔树脂颗粒的合成、表征及水声声学性能[J].功能高分子学报,2011,24(3):303-307.
SUN Wei-hong,YAN Xin,ZHU Xi,ZHOU Li-qing,ZHOU Yun.Synthesis, Characterization and Underwater Acoustic Properties of Macroporous Resin Beads Based on HEA-Terminated Polyurethane Macromonomer[J].Journal of Functional Polymers,2011,24(3):303-307.
孙卫红,晏欣,朱锡,周立清,周赟.基于HEA封端聚氨酯大孔树脂颗粒的合成、表征及水声声学性能[J].功能高分子学报,2011,24(3):303-307.
SUN Wei-hong,YAN Xin,ZHU Xi,ZHOU Li-qing,ZHOU Yun.Synthesis, Characterization and Underwater Acoustic Properties of Macroporous Resin Beads Based on HEA-Terminated Polyurethane Macromonomer[J].Journal of Functional Polymers,2011,24(3):303-307.
