中国涂料
中國塗料
중국도료
CHINA PAINT
2012年
1期
20-23
,共4页
聚氨酯%丙烯酸酯%烷羟基聚二甲基硅氧烷%水接触角%核壳结构
聚氨酯%丙烯痠酯%烷羥基聚二甲基硅氧烷%水接觸角%覈殼結構
취안지%병희산지%완간기취이갑기규양완%수접촉각%핵각결구
polyurethane%acrylate%hydroxyalkyl polydimethylsiloxane%water contact angle%core-shell structure
采用种子乳液聚合方法合成了具有核壳结构的有机硅改性水性聚氨酯-丙烯酸酯复合乳液,TEM测试结果表明,该乳液具有核壳结构。通过共混与共聚体系衰减全反射红外光谱（ATR-FTIR）的比较及表面光电子能谱（ESCA）研究证实有机硅链段已被化学键入聚氨酯-丙烯酸酯分子链中,且硅氧烷链段有表面富集的倾向。表面水接触角及耐水性测试结果表明,随着有机硅含量的增加胶膜的水接触角增大,耐水性提高。
採用種子乳液聚閤方法閤成瞭具有覈殼結構的有機硅改性水性聚氨酯-丙烯痠酯複閤乳液,TEM測試結果錶明,該乳液具有覈殼結構。通過共混與共聚體繫衰減全反射紅外光譜（ATR-FTIR）的比較及錶麵光電子能譜（ESCA）研究證實有機硅鏈段已被化學鍵入聚氨酯-丙烯痠酯分子鏈中,且硅氧烷鏈段有錶麵富集的傾嚮。錶麵水接觸角及耐水性測試結果錶明,隨著有機硅含量的增加膠膜的水接觸角增大,耐水性提高。
채용충자유액취합방법합성료구유핵각결구적유궤규개성수성취안지-병희산지복합유액,TEM측시결과표명,해유액구유핵각결구。통과공혼여공취체계쇠감전반사홍외광보（ATR-FTIR）적비교급표면광전자능보（ESCA）연구증실유궤규련단이피화학건입취안지-병희산지분자련중,차규양완련단유표면부집적경향。표면수접촉각급내수성측시결과표명,수착유궤규함량적증가효막적수접촉각증대,내수성제고。
Using seed emuls ion polymerization method, we have prepared silicone modified waterborne acrylate hybrid emulsion of core-shell structure. TEM test results have confirmed the core-shell structure. Comparatively analyzing the blending and copolymerization system by ATR-FTIR and ESCA, it is verified that silicone segments have been chemically bonded to polyurethane-acrylate molecular chain, and the silicone segments are inclined to enrich in the surface. Testing the surface water contact angle and water resistance shows that, with the increase of silicone content, the water contact angle of film increases and the water resistance is improved.
