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苯乙烯-叔碳酸乙烯酯-丙烯酸酯共聚微乳液的合成 总被引:1,自引:0,他引:1
通过选择合适的乳化体系及合成工艺,制备具有高光泽度、耐磨、耐色变性的苯乙烯-叔碳酸乙烯酯-丙烯酸酯共聚微乳液树脂,应用于印刷无溶剂上光油、高层建筑外墙水性涂料及透明木器涂料等。 相似文献
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苯乙烯-叔碳酸乙烯酯-丙烯酸酯共聚合微乳液的合成与应用 总被引:1,自引:0,他引:1
通过选择合适的乳化体系及合成工艺,制备了具有高光泽度、耐磨、耐色变性能的苯乙烯-叔碳乙烯酯-丙烯酸酯共聚合微乳液涂层树脂,应用于印刷无溶剂上光油、高层建筑外墙水性涂料基础乳液及木器透明漆等。 相似文献
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聚乙二醇单甲醚甲基丙烯酸酯对水性上光油流平性能的影响 总被引:1,自引:0,他引:1
以聚乙二醇单甲醚甲基丙烯酸酯(MPEGMA)作为缔合型乳化剂,以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、苯乙烯(St)、丙烯酸羟乙酯(HEA)为单体,制备水性上光油.研究了MPEGMA相对分子质量与用量对乳液凝胶率、转化率、粒径、黏度、流平和涂层光泽的影响.结果表明:随着MPEGMA相对分子质量的增大,水性上光油的转化率、黏度、涂层光泽逐渐变大,凝胶率、粒径逐渐变小,流平性能提高.当MPEGMA的含量为2%左右时,所得水性上光油凝胶率、粒径较小,转化率、光泽较高,黏度适中,流平性能较好. 相似文献
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以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、丙烯酸(AA)和丙烯酸羟乙酯(HEA)为共聚单体,N-羟甲基丙烯酰胺(N-MAM)为交联单体,采用半连续核/壳乳液聚合法制备水性N-MAM改性丙烯酸酯树脂;然后以此为连接料和基体树脂,并引入WT-204(水性流变助剂)、乙醇等助剂,制备水性上光油。研究结果表明:该水性上光油具有良好的成膜性能;当w(WT-204)=1.0%3.5%(相对于树脂乳液质量而言)时,水性上光油的黏度为203.5%(相对于树脂乳液质量而言)时,水性上光油的黏度为2050 s、光泽度为80%50 s、光泽度为80%120%,并且其各项性能符合高光泽水性上光油的标准要求;当w(乙醇)=1%(相对于树脂乳液质量而言)时,水性上光油的干燥效果相对较好。 相似文献
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纸张水性上光油的制备方法 总被引:1,自引:0,他引:1
赵秋霞 《丙烯酸化工与应用》2005,18(1):42
本发明涉及纸张水性上光油的制备方法,该方法是将烯酸系单体,以低分子量、高酸值的丙烯酸树脂为分散树脂,以阴离子与非离子二合一的表面活性剂为乳化剂,以过硫酸盐为引发剂,在温度为60-90℃条件下进行自由基乳液共聚,然后加入配制的乳化蜡、少量成膜助剂及其它常用助剂,经氨水中和、过滤得到。该制备方法得到的水性上光油毒性、气味小,环境污染小,光泽度高,耐磨、耐水性好,储存、使用稳定性好等特点,能广泛应用于各类纸品包装的表面精饰。 相似文献
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水性上光油用苯丙共聚乳液的合成及性能表征 总被引:2,自引:0,他引:2
以苯乙烯(St)、丙烯酸丁酯(BA)和马来酸酐(MAH)为共聚单体,过硫酸钾(KPS)为引发剂,十二烷基硫酸钠(SDS)/壬基酚聚氧乙烯醚(OP-10)为复合乳化剂,采用半连续加料的乳液聚合法合成出一种水性上光油用苯丙共聚乳液。考察了玻璃化转变温度(Tg)、引发剂和乳化剂含量等对该乳液单体转化率、平均粒径、黏度和表干时间等影响,并对该乳液的热稳定性能进行了研究。结果表明:当w(引发剂)=0.6%、w(复合乳化剂)=1.2%和m(MAH)∶m(BA)∶m(St)=4.6∶36.3∶50.5时,该乳液具有良好的综合性能,完全满足水性上光油的使用要求,并且可在高温环境中使用。 相似文献
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以St(苯乙烯)为硬单体、BMA(甲基丙烯酸丁酯)为软单体、HEMA(甲基丙烯酸羟乙酯)为功能单体、自制A-35(水溶性丙烯酸酯树脂)为乳化剂、DAAM(双丙酮丙烯酰胺)和ADH(己二酸二酰肼)为交联单体,采用种子乳液聚合法制备了一种新型水性上光涂料用聚丙烯酸酯乳液。研究结果表明:当m(St)∶m(BMA)=50∶42~45∶52、w(A-35)=20%~30%(相对于乳液总固含量而言)、w(HEMA)=2%和w(DAAM)=2.5%(均相对于单体总质量而言)时,该乳液的硬度、附着力和储存稳定性相对最佳,并且涂膜可室温固化,而且其光泽度、耐水性、耐溶剂性及耐磨性均满足水性上光涂料的使用要求。 相似文献
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A systematic experimental and modeling study of several emulsion copolymerization systems has been performed, and will be reported in a series of papers. Ten binary and three ternary copolymerizations involving styrene, methyl methacrylate, butyl acrylate, butadiene, vinyl acetate, acrylic acid, and ethylene were studied varying polymerization temperature, monomer composition, water to monomer ratio, initiator and emulsifier concentrations. Conversion, particle size, copolymer composition, and gel content were measured at several reaction times. The goal of this series of papers is to assess our quantitative understanding of emulsion copolymerization expressed in the form of a comprehensive mathematical model applied to monomers widely used in industry. In this first paper of the series, a global comparison of the experimental results is made. It is observed that the gel content is higher in systems containing butyl acrylate and butadiene, and smaller in systems containing methyl methacrylate. Larger particle numbers are obtained for lattices containing acrylic acid and butadiene. It is also shown that, for most of the systems, integration of the simple Mayo–Lewis equation is adequate to explain the drift in copolymer composition observed experimentally. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 79: 2360–2379, 2001 相似文献
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以壬基酚、1,6-二溴己烷、氯磺酸为主要原料合成的阴离子Gemini磺酸盐表面活性剂9 B-6-9 B为乳化剂,苯乙烯(St)、丙烯酸丁酯(BA)为单体,合成了乳胶粒径小于100 nm且分布均匀的苯乙烯-丙烯酸丁酯共聚物纳米乳液,考察了聚合温度、乳化剂用量、引发剂用量、单体配比、单体含量对乳液的影响,探讨了乳胶粒子成核机理。结果表明,随着温度的升高,乳胶粒子的平均粒径减小,转化率与凝胶率增大;随着乳化剂或引发剂用量的增加,乳胶粒子的平均粒径和凝胶率减小,转化率增大;随着软单体比例的增加,乳胶粒子的平均粒径与转化率增大,粒径分布变宽,凝胶率减小;单体用量增大,乳胶粒子的平均粒径与凝胶率增大,转化率降低;乳胶粒子的粒径呈单峰分布,可能是按胶束成核机理形成的。 相似文献
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采用核壳乳液聚合的方法,以苯乙烯、丙烯酸丁酯和丙烯酸为共聚单体,原位制备了聚合墨粉用含蜡苯丙复合乳液。探讨了巴西棕榈蜡用量对单体转化率、凝聚率、复合乳液粒径及其分布、Zeta电位、共聚物的玻璃化转变温度以及相对分子质量及其分布的影响。结果表明,巴西棕榈蜡的加入对聚合稳定性影响不大;随着其用量的增加,乳液粒径、Zeta电位、聚合物玻璃化转变温度降低,而相对分子质量增大。当其用量为3%(wt)时,聚合物具有较适宜的Tg和相对分子质量,分别为65.9℃和89,000。 相似文献
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VOC-free waterborne hybrid alkyd–acrylic (50/50 wt/wt) dispersions were synthesized by melt condensation reactions between acrylic pre-polymers bearing carboxylic groups and medium-oil alkyd resins, followed by a self-emulsification through the neutralization of the carboxylic groups by an aqueous ammonia solution. A mixture experimental design was used to investigate how formulation components of the hybrid alkyd–acrylic resin affect the properties of the hybrid dispersion in terms of the viscosity of the dispersion, particle size, hydrolytic stability, and coating performance, namely gloss and film hardness. It was found that the content of ionizable monomers is the dominant factor controlling the particle size. This latter was shown to meaningfully affect the gloss of the coating after drying. The viscosity of the dispersion was mainly governed by the content of the soybean oil fatty acid which also controlled the hardness of the coating film after drying. An optimal composition that fits the requirement of paint formulation in terms of particle size, viscosity, hardness, and gloss was defined on the basis of the results of the mixture experimental design. 相似文献