几种乳胶漆的抗霉性与抗藻性试验

对硅丙乳液、高弹性乳液、苯丙乳液、纯丙乳液(不含防腐剂、防霉剂、抗藻剂)等几种主要类型乳胶漆的防霉性能、抗藻性能进行试验,结果表明,高弹性类型乳胶漆的防霉性能最好,苯丙类型乳胶漆的抗藻性能最好。     

不同成膜树脂对水性膨胀型防火涂料性能的影响

采用苯丙乳液、环氧乳液、硅丙乳液以及丙烯酸乳液为成膜物制备了几种膨胀型防火涂料,通过锥形量热仪(CONE)和小室法等手段对其防火性能进行研究,并对其理化性能进行了常规测试分析。研究结果表明:硅丙乳液涂料具有较好的防火性能,但其发泡层结构不够致密。若用硅丙乳液与环氧乳液按质量比1∶1复配后,可改善其防火涂料的发泡层结构,使其防火性能大大提高。     

均匀设计合成及性能优化有机硅改性苯丙乳液

采用均匀设计法对影响有机硅改性苯丙乳液合成及性能的主要因素进行了研究,建立了乳液及其涂膜主要性能的回归方程,并通过蒙特卡罗法进行多目标优化,获得了综合性能较佳时的软硬单体质量配比、乳化剂用量、引发剂用量、有机硅用量。对改性苯丙乳液的基本性能进行了测试,并通过粒径分析、红外光谱对乳液及其涂膜结构进行了表征。结果表明,采用均匀设计方法得到的数据可用来指导具体实验,减少实验次数,得到较为理想的实验结果,改变配方后还可对乳液的性能进行预测。     

不同乳液及填料对水性阻尼隔声材料性能影响研究

选择了醋酸乙烯酯乳液、丙烯酸酯乳液和苯乙烯-丙烯酸酯乳液共3种不同类型的乳液及各种无机填料,制备得到不同的水性涂料,对水性涂料的复合损耗因子及隔声量等性能进行了测试,考察了乳液类型、乳液含量、乳液共混、填料种类及含量等对阻尼性能及隔声性能的影响.实验结果表明单一乳液阻尼温域较窄,乳液共混可以拓宽有效阻尼温域;通过加入云...     

抗菌型淀粉接枝苯丙乳液的合成与性能

通过选取植物源天然抗菌剂甘草、茶多酚、肉豆蔻、肉桂油等制备一系列抗菌型淀粉接枝苯丙乳液。通过傅里叶变换红外光谱(FT-IR)对抗菌型淀粉接枝苯丙乳液的结构进行表征,利用激光粒度分析仪对乳液的粒径分布进行分析,通过热重分析对乳液的热稳定性进行表征,研究系列抗菌型淀粉接枝苯丙乳液对大肠杆菌、金黄色葡萄球菌的抗菌性能。结果表明,天然抗菌剂的用量对乳液的稳定性和单体转化率影响较小,乳液的热稳定性较好,乳液粒径(70~95)nm;乳液粒径为纳米尺寸且粒度分布较窄时,乳液性能优良。当天然抗菌剂在乳液中浓度为5%时,乳液抗菌性能较好,节约成本。对不同种类抗菌剂的乳液横向比较表明,天然抗菌剂茶多酚制备的乳液对大肠杆菌的抑菌作用最强,天然抗菌剂肉桂油制备的乳液对金黄色葡萄球菌的抑菌作用最强。     

有机硅改性丙烯酸酯接枝共聚乳液的研制

由乙烯基硅油采用接枝共聚法对丙烯酸酯乳液进行改性,合成了性能优良的硅丙乳液。讨论了引发剂、乳化剂、聚合反应温度及有机硅单体对乳液性能的影响。     

磷酸酯功能单体对苯丙乳液及其水性涂料性能的影响

为考察磷酸酯表面活性剂的防锈性能及其对水性涂料性能的影响．对自制的普通苯丙乳液、功能苯丙乳液及其水性涂料进行了红外光谱、DSC、附着力、钙离子稳定性、防锈性和耐盐水性的分析。结果表明，磷酸酯共聚到聚合物乳液中形成了磷酸酯功能苯丙乳液；磷酸酯功能单体能显著提高功能性苯丙乳液乳胶膜对金属基材的附着力，功能乳液的防锈性能优于自制的普通苯丙乳液和目前市面上的专用防锈乳液的防锈性能，并可勺水性涂料中的防锈颜料复合磷酸锌发生协同作用，大大提高水性防锈涂料涂膜的防锈性能。     

水性环氧树脂的制备及性能研究

用甲基丙烯酸、苯乙烯、丙烯酸丁酯为单体制备了水性丙烯酸改性环氧树脂乳液,对乳液的各项性能进行了测试;并用该乳液制备了水性丙烯酸环氧树脂防腐涂料,对涂层的物理性能和防腐蚀性能(耐盐雾性、电化学性能)进行了测试。结果表明,乳液具有较高的固含量及优良的稳定性,涂层防腐性能优异,满足国家标准。     

可再分散乳胶粉的制备与性能表征

研究间歇法、平衡溶胀法和半连续法不同工艺制备乳液，并对不同工艺制备的乳液测试其性能．详细分析了乳液胶粒粒径的分布，不同胶粒粒径对乳液性能差异的影响。对制得的产品的性能进行了表征，用喷雾干燥法可以制得性能良好的可再分散乳胶粉。     

高氯化聚乙烯乳液的研制及性能

阐述高氯化聚乙烯乳液的制备方法,讨论了各种因素对制备乳液的影响,并对乳液的部分性能进行了研究。     

丙烯酸酯乳液改性研究现状

较详细地介绍了分别用环氧树脂、聚氨酯、有机硅和有机氟对丙烯酸酯乳液进行改性的理论依据及发展现状,并证实改性丙烯酸酯具备普通丙烯酸酯所没有的优异性能。展望了改性丙烯酸酯乳液的发展趋势,为科研工作者更加深入的研究指明了方向。     

乳液聚合法制备全氟碳涂料及性能的研究

以自制的全氟丙烯酸酯单体 ,经乳液聚合的全氟丙烯酸酯乳液共聚物配制的全氟碳乳液涂料 ,其耐水性、耐碱性等均优于传统的丙烯酸酯乳液涂料     

Colloidal and polymer properties difference of fluorinated acrylate latex prepared with different fluorinated monomers

Fluorinated acrylate latex was prepared by copolymerizing fluorinated monomer, butyl acrylate, and methyl methacrylate, which was initiated by potassium persulfate in the water. The resultant fluorinated latex and its film were characterized with contact angle determinator, dynamic light scattering detector, and differential scanning calorimetry, respectively. Influence of type of fluorinated monomers on colloidal and polymer properties of fluorinated acrylate latex was studied. Results show that the coagulation rate, particle size, contact angle, glass transition temperature, and chemical resistance are increased with the increase of the number of fluorine atom in the fluorinated monomer. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

Preparation and performance in paper coating of silicone‐modified styrene–butyl acrylate copolymer latex

Silicone‐modified styrene–butyl acrylate copolymer latex was synthesized by emulsion copolymerization by using octamethylcyclotetrasiloxane (D₄), styrene, and butyl acrylate as raw materials, potassium persulfate as initiator and propylmethacrylate triethoxysilane (KH‐570) as crosslinking agent. The infrared spectra studies showed that the vinyl monomers were completely copolymerized with D₄. The prepared silicone‐modified copolymer latex with the interpenetrating polymer networks tended to have higher stability, and better toluene and water resistance than styrene–butyl acrylate latex. The glossiness of coated paper was improved with silicone‐modified copolymer latex, and it was at a maximum when D₄ was about 3% of total monomers. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 333–336, 2001     

n‐Butyl acrylate based latex interpenetrating polymer networks used as processing modifiers and impact modifiers of poly(vinyl chloride)

A latex interpenetrating polymer network (LIPN), consisting of poly(n‐butyl acrylate), poly(n‐butyl acrylate‐co‐ethylhexyl acrylate), and poly(methyl methacrylate‐co‐ethyl acrylate) and labeled PBEM, with 1,4‐butanediol diacrylate as a crosslinking agent was synthesized by three‐stage emulsion polymerization. The initial poly(n‐butyl acrylate) latex was agglomerated by a polymer latex containing an acrylic acid residue and then was encapsulated by poly(n‐butyl acrylate‐co‐ethylhexyl acrylate) and poly(methyl methacrylate‐co‐ethyl acrylate). A polyblend of poly(vinyl chloride) (PVC) and PBEM was prepared through the blending of PVC and PBEM. The morphology and properties of the polyblend were studied. The experimental results showed that the processability and impact resistance of PVC could be enhanced considerably by the blending of 6–10 phr PBEM. This three‐stage LIPN PBEM is a promising modifier for manufacturing rigid PVC. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 1168–1173, 2004     

Film formation and mechanical properties of the alkoxysilane-functionalized poly (styrene-co-butyl acrylate) latex prepared by miniemulsion copolymerization

Alkoxysilane-functionalized poly (styrene-co-butyl acrylate) latex was prepared via miniemulsion copolymerization of γ-methacryloxypropyltrimethoxysilane (MPS), styrene and butyl acrylate using AIBN at neutral condition. The effects of initiator types, pH values, and MPS contents on the premature cross-linking of the latex particles and the mechanical properties of the films were investigated by the swelling experiments and dynamic mechanical analysis. It was found that the storage modulus of the latex films and the glass transition temperature (T_g) increased with increasing MPS content. The acidification of latex prior to film formation and annealing the latex films could improve the mechanical properties of the films.     

水性环氧丙烯酸酯乳液涂层成膜性能

采用细乳液聚合法制备了环氧丙烯酸酯复合乳液,考察了固化温度、固化时间及磷酸酯乳化剂含量对环氧丙烯酸酯复合涂膜性能的影响,结果表明环氧丙烯酸酯复合乳胶粒子呈均匀的球形结构,且平均粒径分布在150 nm左右。当固化温度为120℃、固化时间为2 h、磷酸酯乳化剂含量为3%时,涂层的耐腐蚀性较好。研究了复合乳液的成膜过程和防腐蚀机理,通过复合乳液与金属底材形成致密的钝化膜,阻隔水分子和无机离子的浸入,提高了涂层的防腐性能。     

有机硅、云母改性丙烯酸酯互穿网络阻尼材料的制备及性能研究

采用半连续乳液聚合的方法,在以丙烯酸酯类单体为主的二元互穿网络中加入有机硅单体与乳液进行共聚,得到了性能稳定的有机硅丙烯酸酯共聚乳液,并在乳液中加入了无机填料(绢云母)。考察了有机硅单体的用量对合成乳液及其胶膜性能的影响,通过红外光谱分析,证明了有机硅单体和丙烯酸酯单体的共聚。通过透射电镜(TEM)对乳胶粒子的观察,分析了有机硅单体及云母对乳液乳胶粒子形态结构的影响。通过动态粘弹仪(DMA)对材料的动态力学性能进行测试得到,Tanδ>0.3的温度范围为:-65～150℃。     

四元共聚水性防腐涂料乳液的合成与性能研究

用丙烯酸丁酯、苯乙烯、丙烯腈、丙烯酸共聚,得到性能优良的水性防腐涂料乳液;讨论了原料的种类和用量、合成工艺等对乳液性能的影响。     

苯乙烯 -马来酸酐共聚物作乳化剂合成丙烯酸酯乳胶的研究

采用 4种不同的碱（氢氧化钾、氢氧化钠、氨水、三乙胺）皂化低相对分子质量的苯乙烯 -马来酸酐共聚物（ SMA）作为乳液聚合的乳化剂合成了丙烯酸酯乳胶,并对 4种不同碱皂化的 SMA作乳化剂合成丙烯酸酯乳胶时所需乳化剂的用量、乳胶的粒径、粒径分布、黏度、乳胶稳定性及乳胶膜的吸水率进行了研究。结果表明： 4种碱皂化 SMA作为乳化剂均可以合成丙烯酸酯乳胶,最佳用量为单体的 8%（质量分数,下同）。乳胶性能及乳胶膜的吸水率受皂化 SMA所用碱的类型的影响较大。其中, NaOH皂化 SMA作乳化剂合成的丙烯酸酯乳胶的综合性能最好,乳胶的粒径较小为 142. 4 nm,呈单分散,黏度为 14. 68 mPa·s,综合稳定性良好,乳胶膜吸水率较低,为 9. 52%。