本文選題：亞油酸 + 支化�。� 參考：《合肥工業(yè)大學(xué)》2016年碩士論文

【摘要】：可再生類植物基資源由于其環(huán)保性、可再生性、廉價(jià)性等特點(diǎn),在替代石化類資源上已經(jīng)是大勢所趨。傳統(tǒng)的涂層領(lǐng)域存在著高度依賴石化類資源和固化速度不夠快這兩大缺陷。為了解決這兩大缺陷,本文從可再生類植物基資源出發(fā),選取從農(nóng)業(yè)副產(chǎn)物中提取的亞油酸為原料,通過一系列反應(yīng),制備了以亞油酸為基礎(chǔ)的快干型改性亞油酯低聚物,同時(shí)將該低聚物制備成涂層。該結(jié)果不僅可以達(dá)到對農(nóng)業(yè)副產(chǎn)物的高效利用,在一定程度上取代石化類資源,同時(shí)所制備的涂層可以在紫外光照射下快速固化,有效提升了涂層的固化速率與應(yīng)用范圍。主要的研究內(nèi)容如下：采用三步反應(yīng),首先利用甲基丙烯酸縮水甘油酯(以下簡稱GMA)分子上的環(huán)氧基團(tuán)與亞油酸分子上的羧基基團(tuán)進(jìn)行環(huán)氧開環(huán)酯化反應(yīng),將含有雙鍵的丙烯酸酯成功連接到亞油酸長鏈分子中,制備亞油基丙烯酸酯。再利用馬來酸酐(以下簡稱MAH)進(jìn)行支化反應(yīng),然后再與GMA進(jìn)行環(huán)氧開環(huán)酯化反應(yīng),最終成功制備出具有支化結(jié)構(gòu)的多不飽和度改性亞油酯。研究了三步反應(yīng)的最佳合成工藝,其中環(huán)氧開環(huán)酯化反應(yīng)的最佳合成工藝為反應(yīng)溫度130℃,反應(yīng)時(shí)間3h,投料摩爾比1.2(GMA過量)。MAH支化反應(yīng)的最佳合成工藝為反應(yīng)溫度85℃,反應(yīng)時(shí)間3h,投料摩爾比為1：1。通過紅外分析、核磁分析等手段,對所合成的改性亞油酯的分子結(jié)構(gòu)進(jìn)行了表征,結(jié)果表明合成產(chǎn)物具有期望的結(jié)構(gòu),具有支化結(jié)構(gòu)的多不飽和度改性亞油酯目標(biāo)產(chǎn)物已經(jīng)成功合成。在改性亞油酯制備涂層紫外光固化階段,研究了固化方案與對固化后涂層性能的影響,結(jié)果表明最佳固化方案為紫外光照射距離20cm,涂層的厚度200μm。同時(shí)分別研究了光引發(fā)劑和活性稀釋劑種類及用量對涂層的影響,確定了固化涂層的最佳光引發(fā)劑種類為BASF Irgacure 907,光引發(fā)劑最佳用量為6wt%。最佳活性稀釋劑種類為TMPTA,活性稀釋劑最佳用量為40wt%。固化涂層的最佳配方為：改性亞油酯：活性稀釋劑(TMPTA):光引發(fā)劑(907)=54wt%:40wt%:6wt%。研究結(jié)果表明,通過最佳方案所制備的改性亞油酯涂層具有較快的固化速率,在紫外光照射下7s即可實(shí)現(xiàn)表面干燥,涂層的雙鍵轉(zhuǎn)化率達(dá)到了93%,同時(shí)所制備的涂層具有較好的性能：附著力為1級(jí),鉛筆硬度為3H,沖擊強(qiáng)度為40kg·cm,具有優(yōu)良的耐水性及耐溶劑性。
[Abstract]:Because of its characteristics of environmental protection, reproducibility and low cost, renewable plant-based resources have become the general trend in replacing petrochemical resources. There are two defects in the traditional coating field, which are highly dependent on petrochemical resources and insufficient curing speed. In order to solve these two defects, in this paper, linoleic acid extracted from agricultural by-products was selected as raw material from renewable plant-based resources. Through a series of reactions, a fast drying modified linoleic ester oligomer based on linoleic acid was prepared. At the same time, the oligomer was prepared into a coating. The results can not only achieve high efficiency utilization of agricultural by-products and replace petrochemical resources to a certain extent, but also can rapidly solidify the coatings under UV irradiation, thus effectively increasing the curing rate and application range of the coatings. The main research contents are as follows: firstly, the epoxide group of glycidyl methacrylate (GMA) molecule and the carboxyl group of linoleic acid molecule were used for the epoxidation of glycidyl methacrylate (GMA). Acrylates containing double bonds were successfully linked to linoleic acid long chain molecules to prepare sub-oleic acrylates. Maleic anhydride (MAH) was used for branching reaction, and then epoxy ring opening esterification reaction with GMA was carried out. Finally, the modified oil ester with branched structure was successfully prepared. The optimum synthesis process of the three-step reaction was studied. The optimum synthetic process of epoxide ring-opening esterification was 130 鈩，

本文編號(hào)：2085135