| 水性聚氨酯乳液的合成研究 |
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| 引用本文： | 张军科. 水性聚氨酯乳液的合成研究[J]. 上海涂料, 2011, 49(10): 15-18 |
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| 作者姓名： | 张军科 |
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| 作者单位： | 陕西国防工业职业技术学院化学工程系,陕西西安,710300 |
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| 基金项目： | 陕西国防工业职业技术学院科研基金资助项目 |
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| 摘 要： | 以自制聚酯多元醇和过量的2，4-甲苯二异氰酸酯为原料进行预聚反应，合成含异氰酸酯端基的预聚体，再以二羟甲基丙酸为亲水剂，引入二元醇进行扩链反应，制备了水性聚氨酯。研究了残留-NCO含量及n-Nco／n—OH比值对乳液合成及性能的影响。研究认为：控制n-NCO／n—OH比值在2．0—2．5之间，残留一NCO含量在3．0％-3．5％之间时，制备的乳液性能最佳。
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| 关 键 词： | 阴离子型水性聚氨酯 合成 乳化 |
Study on Synthesis of Waterborne Polyurethane Emulsion |
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| ZHANG Jun-ke. Study on Synthesis of Waterborne Polyurethane Emulsion[J]. Shanghai Coatings, 2011, 49(10): 15-18 |
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| Authors: | ZHANG Jun-ke |
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| Affiliation: | ZHANG Jun-ke ( Chemistry Engineering Department, Shanxi GuoFang Institute of Technology, Shanxi xi＇an, 710300, China ) |
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| Abstract: | A NCO-terminated polyurethane prepolymer was prepared by self-made polyester polyol and excessive toluene diisocyanate （ TDI ）, and then using dimethanol propionic acid （ DMPA ） as hydrophilic agent, waterborne polyurethane were synthesized by cross-linking reaction. The effects of residual -NCO content and n_Nco/n_oH ratio on the synthesis and properties of the emulsion were studied. The results showed that when n-NCO/n-OH ratio was between 2.0 and 2.5, and residual -NCO content was between 3.0%-3.5%, the properties of the emulsion were perfect. |
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| Keywords: | anionic waterborne polyurethane synthesis emulsification |
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