以异佛尔酮二异氰酸酯（IPDI）、聚四氢呋喃二醇（PTMG）、γ-（甲基丙烯酰氧基）丙基三甲氧基硅烷（MEMO）为基本原料,制备了硅烷改性聚氨酯乳液,并外加氮丙啶进一步提高了胶膜的性能。衰减全反射傅里叶变换红外光谱（ATR-FT-IR）对产物的结构进行了表征,考察了MEMO含量对乳液粒径、胶膜耐水性、力学性能及热性能的影响,同时对胶膜的结晶性及接触角进行了测试。结果表明ATR-FT-IR证实了MEMO成功地反应到了聚氨酯分子链上;在m（MEMO）=5.67%,m（AZ）=2%时,胶膜的耐水性最低为14.84%,胶膜的最大拉伸强度为17.334MPa,断裂伸长率为232.56%,改性后聚氨酯的热稳定性提高,结晶性及表面能均降低。
Silane modified waterborne polyurethane was synthesized by isophorone diisocyanate（IPDI）,polytetrahydrofuran glycol（PTMG）,γ-methacryloxypropyl trimethoxy silane and aziridine was also used to improve the quality of the film.The structure was characterized by ATR-FT-IR.The effect of MEMO content on emulsion size,the film property of water resistence,mechanical properties,thermal stability,crystallinity and contact angle were studied.The results showed that when m（MEMO）=5.67%,m（AZ）=2%,water resistence rate was low to 14.84%,the maximum tensile strength was 17.334MPa,the breaking elongation was 232.56%,the surface engery and the crystallinity of the polyurethane film was decreased while the thermal stability was enhanced.
参考文献
| [1] | 赖小娟,李小瑞,王磊.环氧改性水性聚氨酯乳液的制备及其膜性能[J].高分子学报,2009(11):1107-1112. |
| [2] | 赵静,沈一丁,赖小娟.酮肼交联及硅烷偶联水性聚氨酯的成膜机理及其性能研究[J].高分子学报,2010(09):1122-1128. |
| [3] | 鲍亮,徐洪耀,吴振玉,方敏,光善仪.3-氨基丙基三乙氧基硅烷改性水性聚氨酯的研究[J].高分子材料科学与工程,2007(02):250-253. |
| [4] | 王萃萃,王秋梅,戴震,许戈文.硅烷偶联剂KH-602改性水性聚氨酯的研究[J].涂料技术与文摘,2010(05):23-27. |
| [5] | 卫晓利,张发兴.氨丙基氨乙基三甲氧基硅烷改性磺酸型水性聚氨酯[J].中国皮革,2009(17):12-14,18. |
| [6] | 杜娟,郝俊松,李再峰.室温固化水性聚氨酯树脂的耐水性研究[J].涂料工业,2010(02):59-62,69. |
| [7] | 沈一丁,杨燕,赖小娟.硅烷改性自交联水性聚氨酯的合成及其涂膜性能研究[J].涂料工业,2010(08):25-29. |
| [8] | Damrongsakkul S.;Sinweeruthai R.;Higgins JS. .Processability and chemical resistance of the polymer blend of thermoplastic polyurethane and polydimethylsiloxane[J].Macromolecular symposia,2003(0):411-419. |
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