聚醚硅氧烷二元醇改性水性聚氨酯的合成及性能
Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University（2006）
Abstract
采用聚丙二醇和聚醚硅氧烷二元醇WACKER IM 22为软段,2,4-甲苯二异氰酸酯为硬段合成了有机硅改性水性聚氨酯乳液,通过ATR-IR、GPC、TEM、DSC、TG和WAXD等研究了有机硅改性水性聚氨酯的性能.结果表明,当WACKER IM 22与聚丙二醇的质量比为20%时,有机硅改性水性聚氨酯乳液的耐冻性和流平性提高,数均相对分子质量降低,软、硬段相的相容性提高,热分解性能与未改性水性聚氨酯相似,且无明显的结晶能力.
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Key words
Anti-frozen property,Leveling effect,Miscibility,Modified,Polyethersiloxanediol,Waterborne polyurethane
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