本文選題：水性丙烯酸酯樹脂　切入點(diǎn)：相反轉(zhuǎn)法　出處：《復(fù)旦大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著環(huán)保和降低VOC的要求日益提高,高性能水性樹脂的制備及應(yīng)用成為涂料、膠粘劑、油墨等行業(yè)的研究熱點(diǎn)。本論文采用自由基聚合方法制備CPP/丙烯酸酯聚合物,通過水稀釋-相反轉(zhuǎn)方法獲得水性聚合物空心微球、PP塑料用水性丙烯酸酯樹脂,并對(duì)水性聚合物空心微球的形成機(jī)理及水性樹脂的性能進(jìn)行了探索,水性樹脂與PP塑料基材附著力好,可取代傳統(tǒng)的溶劑型樹脂應(yīng)用于低極性塑料表面保護(hù)。具體研究?jī)?nèi)容及結(jié)果如下： (1)通過一種簡(jiǎn)單相反轉(zhuǎn)法合成了聚合物空心微球。以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)和丙烯酸(AA)、氯化聚丙烯(CPP)等為原料,在丁酮等少量溶劑存在下自由基聚合原位接枝帶有親水基團(tuán)的疏水聚合物CPP,加胺中和聚合物鏈上的羧基,并逐步加水直至相反轉(zhuǎn),直接獲得水性聚合物空心微球分散液。實(shí)驗(yàn)結(jié)果表明,CPP與聚丙烯酸酯產(chǎn)生相分離,在微球內(nèi)部引入親水區(qū)域,加水相反轉(zhuǎn),親水區(qū)域溶解是產(chǎn)生聚合物中空結(jié)構(gòu)的直接原因。丁酮溶劑與水半混溶,將外部水引入到微球內(nèi)部產(chǎn)生親水性空腔。親水性單體AA含量對(duì)微球形態(tài)起決定性作用,AA含量較低時(shí)得到多孔結(jié)構(gòu),當(dāng)AA含量較高時(shí)得到空心微球結(jié)構(gòu),這是由于AA用量決定了不完全或完全相分離。 (2)以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)和甲基丙烯酸(MAA)、氯化聚丙烯(CPP)等為原料,在溶劑存在下自由基聚合制備CPP/聚丙烯酸酯聚合物,加胺中和并加水相反轉(zhuǎn),制備聚丙烯塑料用水性CPP/丙烯酸酯聚合物樹脂。采用光學(xué)顯微鏡、SEM.XPS、接觸角分析儀等表征了CPP、共溶劑等對(duì)水性丙烯酸酯樹脂穩(wěn)定性、涂層與PP塑料表面自由能及附著力等的影響。實(shí)驗(yàn)發(fā)現(xiàn),在水性CPP/丙烯酸酯聚合物樹脂中,共溶劑對(duì)水性體系的穩(wěn)定性有影響,共溶劑選擇不當(dāng),CPP在體系中析出產(chǎn)生相分離,降低涂層與PP塑料的附著力。水性樹脂的組成、共溶劑等對(duì)涂層表面自由能大小均有影響,也會(huì)影響涂層與塑料基材的附著力。表面能較低的涂層在PP基材的附著力較好。
[Abstract]:With the increasing requirement of environmental protection and reducing VOC, the preparation and application of high performance waterborne resin has become a hot research topic in coatings, adhesives and inks. In this paper, CPP/ acrylate polymers were prepared by free radical polymerization. Waterborne acrylate resin for waterborne polymer hollow microspheres (PP) was obtained by water dilution and reverse conversion method. The formation mechanism of waterborne polymer hollow microspheres and the properties of waterborne resins were explored. Waterborne resin has good adhesion with PP base material, which can replace the traditional solvent resin and be used in the surface protection of low-polar plastics. The specific research contents and results are as follows:. (1) Polymer hollow microspheres were synthesized by a simple reverse conversion method, using methyl methacrylate (MMA), butyl acrylate (BA), acrylic acid (AA) and chlorinated polypropylene (CPP) as raw materials. In the presence of a small amount of solvent, such as butanone, the hydrophobic polymer CPP with hydrophilic group was grafted by free radical polymerization in situ, and the carboxyl group in the polymer chain was neutralized by adding amine, and gradually adding water until the reverse was changed. The aqueous polymer hollow microspheres dispersions were obtained directly. The experimental results showed that CPP was separated from polyacrylate and hydrophilic region was introduced into the microspheres. Hydrophilic region dissolution is the direct cause of polymer hollow structure. The hydrophilic cavity was produced by introducing external water into the microspheres. The hydrophilic monomer AA content played a decisive role in the morphology of the microspheres. The porous structure was obtained when the AA content was lower, and the hollow microspheres structure was obtained when the AA content was higher. This is because AA dosage determines incomplete or complete phase separation. Using methyl methacrylate (MMA), butyl acrylate (BA), methacrylate (MAA) and chlorinated polypropylene (CPP) as raw materials, CPP/ polyacrylate polymer was prepared by free radical polymerization in the presence of solvent. Waterborne CPP/ acrylate polymer resin was prepared for polypropylene plastics. The stability of CPP, co-solvent and so on was characterized by optical microscope SEM.XPSand contact angle analyzer. The influence of the surface free energy and adhesion of the coating on PP plastics. It was found that the co-solvent had an effect on the stability of the water-borne system in the water-borne CPP/ acrylate polymer resin, and the misselection of the co-solvent resulted in phase separation in the system. Reducing the adhesion between the coating and PP plastics. The composition of water-borne resin and co-solvent have an effect on the surface free energy of the coating, and will also affect the adhesion of the coating to the plastics substrate. The lower surface energy of the coating has better adhesion to the PP substrate.
【學(xué)位授予單位】：復(fù)旦大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TQ323.42

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 陳衛(wèi)東;張鵬云;陳艷麗;王棟;顧莉;;國(guó)內(nèi)丙烯酸酯樹脂研究概況[J];化工新型材料;2013年09期

相關(guān)碩士學(xué)位論文 前1條

1 黃文濤;用于柔性版印刷的水性油墨及其丙烯酸樹脂的合成與研究[D];華南理工大學(xué);2013年

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本文編號(hào)：1630607