環硅氧烷陽離子乳液聚合動力學研究

化工論文編號:HG068  論文字數:7703,頁數:19

 目  錄
中文摘要 I
英文摘要 II
目錄 III
1. 緒論 1
1.1 有機硅乳液聚合概述 1
1.2 有機硅乳液研究的發展現狀 2
 1.2.1 國內有機硅乳液聚合的發展現狀 2
 1.2.2 國外有機硅乳液聚合的發展現狀 3
1.3 本課題的提出 4
2. 實驗部分 5
 2.1 主要原料和試劑 5
 2.2 主要儀器和設備 5
 2.3 實驗流程和裝置 6
 2.4 樣品測試 7
3. 結果與討論 8
 3.1 陽離子乳化劑用量的影響  8
 3.2 非離子乳化劑用量的影響 9
 3.3 KOH的影響 9
 3.4 溫度的影響 10
 3.5 攪拌速率的影響 11
 3.6 水油比的影響 12
4．總結與展望 13
 4.1 總結 13
 4.2 展望 13
致謝 14
參考文獻 15

摘要： 有機硅陽離子乳液具有十分優異的耐溫、耐候、耐化學品，并可賦予紡織皮革制品十分柔順的手感，因此應用十分廣泛。而其合成工藝-環硅氧烷陽離子乳液聚合是典型的活性可逆平衡聚合，近年來一直受到人們的密切關注。因此本研究以八甲基環四硅氧烷（D4）為單體，KOH為催化劑，采用復合乳化劑進行環硅氧烷陽離子乳液聚合，并用重量法測定聚合產物的轉化率。在此基礎上，詳細討論了陽離子乳化劑用量、非離子乳化劑用量、KOH用量、溫度、攪拌速度和水油比對聚合反應速率的影響。結果表明，非離子乳化劑用量增加，聚合速率單調地增加；溫度升高，聚合速率增加，平衡轉化率則不變；水油比對聚合速率無本質影響；陽離子乳化劑用量、KOH用量增加及攪拌速度增大時，聚合速率則先單調增加，再下降。

關鍵詞： 環硅氧烷；陽離子乳液聚合；動力學；聚合速率；

Cyclosiloxane Cationic Polymerization Kinetics

Abstract：Silicone cationic emulsion has very excellent heat, weather resistance, chemical resistance, will give textile leather products feel very submissive, very broad application. And the synthesis - cyclosiloxane cationic polymerization activity is a typical reversible balance polymerization, In recent years, we have been paying close attention to the people. In this study, eight D4 (D4) for the monomer, KOH as catalyst composite emulsifier for cyclosiloxane cationic emulsion, and using weight Determination polymerization products of the conversion. On this basis, a detailed discussion of cationic emulsifier, nonionic emulsifier, KOH concentration, temperature, Mixing speed and water-oil ratio on the polymerization reaction rate impact. The results show that the non-ionic surfactant consumption increased polymerization rate monotonic increase; Temperature increases, the polymerization rate increase balance conversion rate will remain unchanged; water-oil ratio on the polymerization rate no essential; cationic emulsifier. increase the amount of KOH and stirring speed increases, the rate of polymerization is first monotonous, then dropped.

Keywords：Cyclosiloxane ; Cationic polymerization ; Kinetics; Polymerization rate;