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纳米改性水性聚氨酯的制备与性能研究

Paint & Coatings Industry(2010)

Cited 6|Views6
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Abstract
对纳米SiO2和TiO2进行了TDI(HDI)和PEG的接枝改性,并采用共混法制备了纳米改性水性聚氨酯乳液,电镜观测表明改性后的纳米粒子在乳液中分散均匀,无团聚现象。纳米粒子改性后的水性聚氨酯乳液力学性能比未改性前得到改善和提高,纳米粒子添加量为0.5%时,水性聚氨酯乳液的力学性能最佳,同时吸水率降低了70%,添加的纳米粒子对290~400 nm的紫外光有吸收。
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Key words
UV absorption,waterborne polyurethane,mechanical properties,water absorption,nanoparticles
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