合格作品 字?jǐn)?shù)4266個(gè)字
摘 要
水性涂料具有無(wú)毒、無(wú)味、環(huán)境污染小等優(yōu)點(diǎn)，符合當(dāng)今涂料的發(fā)展方向。環(huán)氧樹脂附著力和耐化學(xué)藥品腐蝕能力強(qiáng)，廣泛應(yīng)用于防腐涂料工業(yè)領(lǐng)域。但環(huán)氧樹脂難溶于水，只溶于有機(jī)溶劑，傳統(tǒng)的環(huán)氧涂料只為溶劑型。以環(huán)氧樹脂的水性化來(lái)開發(fā)水性環(huán)氧涂料借以取代溶劑型涂料，適應(yīng)了涂料界節(jié)資節(jié)能，保護(hù)環(huán)境的要求。丙烯酸樹脂以其優(yōu)異的保光保色性，也常用作涂料的基料。因此，可以用丙烯酸酯單體對(duì)環(huán)氧樹脂接枝改性引入羧基等親水基團(tuán)，制得水性-丙烯酸環(huán)氧樹脂，然后中和成鹽制得水分散液，兼具了環(huán)氧樹脂和丙烯酸樹脂的優(yōu)點(diǎn)。
本文研究了水性-丙烯酸環(huán)氧樹脂接枝共聚物的合成工藝條件，在引發(fā)劑過氧化苯甲酰的作用下，將丙烯酸丁酯等單體自由基接枝聚合到環(huán)氧樹脂上，形成富含羧基等親水基團(tuán)的水性-丙烯酸環(huán)氧樹脂，用成鹽劑中和成鹽，加水稀釋形成水分散液。以單因素實(shí)驗(yàn)討論了混合單體含量、環(huán)氧樹脂添加量和引發(fā)劑占混合單體的比例對(duì)合成樹脂的影響，測(cè)定了所得乳液的固含量、轉(zhuǎn)化率和吸水率，測(cè)試了乳液涂膜性能，結(jié)果表明乳液性能好，符合要求。
關(guān)鍵詞 乳液 單體 接枝反應(yīng) 水性涂料
Abstract
Water-based paint with non-toxic, tasteless, environmental pollution, etc., with the current paint development. Epoxy adhesion and corrosion resistance to strong chemicals, widely used in anti-corrosion coatings industry. However, epoxy resin is insoluble in water, only soluble in organic solvents, the traditional solvent-based epoxy coatings. With water-based epoxy resin to develop water-based epoxy coatings to replace solvent-based paints, the paint industry to adapt to the section owned energy, environmental protection requirements. Acrylic resin for its excellent gloss and color retention, but also used as coating binders. Therefore, you can use epoxy acrylate monomers grafted on the introduction of carboxyl and other hydrophilic groups, a system of water - acrylic resin, and salt and then the obtained water dispersion system, both the ring epoxy resin and acrylic resin advantages.
This paper studies the water - acrylic graft copolymer resin synthesis process conditions, the initiator benzoyl peroxide under the action of the butyl acrylate and other monomers to free radical graft polymerization of epoxy resin, the formation of hydrophilic groups such as carboxyl-rich water-based - acrylic resin,with a salt agent and salt, diluted with water to form aqueous dispersions. To discuss the single factor experiments hybrid monomer content, add the amount of epoxy resin mixed monomer and initiator proportion accounted for the impact of synthetic resin, measured from the solid content of emulsions, the conversion rate and water absorption test of the emulsion coating Performance results show that the emulsion performance, to meet the requirements.
Key words Emulsion Monomer Grafting reaction Water-based paint
目 錄
摘 要 I
Abstract II
第一章 緒論 1
1.1 引言 1
1.2 環(huán)氧樹脂概述 1
1.3 環(huán)氧樹脂的水性化改性方法 3
1.3.1 乳化法 3
1.3.2 化學(xué)改性法 4
1.4 反應(yīng)的微觀分析 7
1.5 本文研究的目的與意義 8
第二章 實(shí)驗(yàn)部分 10
2.1 主要實(shí)驗(yàn)原料 10
2.2 主要使用的儀器 10
2.3 水性-丙烯酸環(huán)氧樹脂乳液的制備 11
2.4 單因素實(shí)驗(yàn)設(shè)計(jì) 12
2.5 乳液性能分析方法 13
2.5.1 外觀測(cè)定 13
2.5.2 pH值的測(cè)定 13
2.5.3 鈣離子穩(wěn)定性 13
2.5.4 機(jī)械穩(wěn)定性 13
2.5.5 固含量的測(cè)定 13
2.5.6 單體的轉(zhuǎn)化率 14
2.5.7 涂膜耐水性及吸水率的測(cè)定 14
第三章 結(jié)果與討論 16
3.1 單因素實(shí)驗(yàn)的結(jié)果分析 16
3.1.1 混合單體含量的影響的分析 16
3.1.2 環(huán)氧樹脂添加量的影響的分析 17
3.1.3 引發(fā)劑用量的影響的分析 19
3.2 乳液性能測(cè)試結(jié)果 21
3.2.1 外觀測(cè)定 21
3.2.2 乳液pH的測(cè)定 21
3.2.3 鈣離子穩(wěn)定性測(cè)試 21
3.2.4 乳液機(jī)械穩(wěn)定性測(cè)試 21
3.2.5 固含量的測(cè)定 21
3.2.6 單體轉(zhuǎn)化率的測(cè)定 21
3.2.7 涂膜耐水性及吸水率的測(cè)定 21
結(jié) 論 23
致 謝 24
參考文獻(xiàn) 25
Contents
Chinese abstract I
English abstract II
Chapter one Introduction 1
1.1 Introduction 1
1.2 Epoxy resin summarize 1
1.3 The modification of waterborne epoxy resin method 3
1.3.1 Emulsion process 3
1.3.2 Chemical modification 4
1.4 The reaction microscopic analysis 7
1.5 The purpose of this study and meaning 8
Chapter two Experimental section 10
2.1 The main raw material 10
2.2 The main use of the instrument 10
2.3 Water-acrylic epoxy resin emulsion preparation 11
2.4 Single factor experiment design 12
2.5 Emulsion performance analysis method 13
2.5.1 Appearance determination 13
2.5.2 pH value of determination 13
2.5.3 Calcium ion stability 13
2.5.4 Mechanical stability 13
2.5.5 Solid content determination 13
2.5.6 Monomer conversion 14
2.5.7 The film water resistance and bibulous rate is determined 14
Chapter three Results and Discussion 16
3.1 Single factor experiment analysis of results 16
3.1.1 Mix of analysis on the influence of the monomer content 16
3.1.2 The amount of epoxy resin added to the analysis of the influence 17
3.1.3 Dosage of initiator of the ..