水性涂料用丙烯酸树脂的制备

I水性涂料用丙烯酸树脂的制备摘要与传统的溶剂型涂料相比，水性涂料具有价格低、使用安全，节省资源和能源，减少环境污染和公害等优点，因而已成为当前发展涂料工业的主要方向。水性丙烯酸烯树脂涂料是水性涂料中发展最快、品种最多的无污染型涂料。本实验采用溶液聚合法，以甲基丙烯酸甲酯（MMA）、丙烯酸丁酯（BA）和丙烯酸（AA）为单体，以正丁醇为溶剂，过氧化苯甲酰（BPO）为热引发剂，制得了水性丙烯酸树脂。分析了反应温度、时间，单体、引发剂和中和剂用量对水性丙烯酸树脂性能的影响。结果表明合成水性丙烯酸树脂的最佳工艺条件为：丙烯酸AA为单体总摩尔质量的12.5%，甲基丙烯酸甲酯（MMA）:丙烯酸丁酯（BA）为1:1，引发剂用量为单体总摩尔质量的0.5%，反应温度为100℃，反应时间为3h，中和度为90%。关键词：丙烯酸树脂，单体，涂料，溶液聚合，合成IIThePreparationofWater-basedCoatingwithAcrylicResinABSTRACTComparedwiththetraditionalsolventcoating,coatingwithlowpriceTheuseofsafe,saveresourcesandenergy,reduceenvironmentalpollutionandpollutionetc,andthushasbecomethecurrentdevelopmentofcoatingindustrythemaindirectionofwater-borneacrylicPVCresinpaintiswater-basedcoatingthefastestgrowingmostvarietiesinnopollutingcoatings.Thisexperimentbysolutionpolymerization,withmethylmethacrylate（MMA）,butylacrylate（BA）andacrylicacid（AA）asthemonomer,withbutylalcoholasthesolventandbenzoylperoxide（BPO）asthethermalinitiator,withwaterbasedacrylicresin.Analyzedthereactiontemperature,time,monomerinitiatorandneutralizingagentdosageonthepropertiesofwater-basedacrylicresin.Theresultsshowedthatthebestprocessconditionsforsynthesisofwaterborneacrylicresin:AcrylicAA12.5%ofthetotalmolarmassofmonomer,methylmethacrylate（MMA）,butylacrylate（BA）as1:1,initiatordosageis0.5%ofthetotalmolarmassofmonomer,reactiontemperatureof100,thereactiontimeis3h,neutralizationdegreeof90%.KEYWORDS：acrylicresin，monomer，coating，solutionpolymerization，synthesisIII目录摘要.............................................................................................................................................IABSTRACT..............................................................................................................................II1绪论........................................................................................................................................11.1水性涂料......................................................................................................................11.2水性丙烯酸树脂简介..................................................................................................21.2.1水性丙烯酸树脂的概念....................................................................................21.2.2水性丙烯酸树脂的特点....................................................................................31.2.3水性丙烯酸树脂的分类....................................................................................31.3水性丙烯酸树脂的主要合成方法..............................................................................51.4水性涂料用丙烯酸树脂的研究现状..........................................................................61.5水性丙烯酸树脂反应机理..........................................................................................81.5.1水性丙烯酸树脂的聚合机理............................................................................81.5.2丙烯酸树脂水性化方法..................................................................................101.6丙烯酸树脂的运用....................................................................................................111.7本课题研究的目的意义及内容................................................................................112实验部分..............................................................................................................................132.1实验药品及仪器........................................................................................................132.1.1实验药品..........................................................................................................132.1.2实验仪器..........................................................................................................132.1.3实验装置..........................................................................................................132.2树脂的合成反应原理................................................................................................142.3实验原料的选择........................................................................................................142.3.1单体的选择......................................................................................................142.3.2引发剂的选择..................................................................................................142.3.4溶剂的选择......................................................................................................152.3.5中和剂的选择..................................................................................................152.4水性丙烯酸树脂的制备工艺....................................................................................152.5水性丙烯酸树脂的性能测试....................................................................................152.5.1外观的检测......................................................................................................152.5.2固含量的测定..................................................................................................152.5.3反应转化率的测定..........................................................................................162.5.4黏度的测定...............................................................................