共查询到19条相似文献,搜索用时 156 毫秒
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采用溶液聚合法,将丙烯酸酯类单体、甲基丙烯酸十二氟庚酯(氟单体)与叔碳酸乙烯酯(VV-10)共聚,制备了高固含量的含氟羟基丙烯酸酯树脂。研究了引发剂、链转移剂用量对树脂黏度的影响。同时讨论了VV-10用量、羟值及含氟单体量对树脂涂膜耐水性、耐溶剂性、疏水性的影响。结果表明:甲基丙烯酸十二氟庚酯的加入降低了涂膜的表面能,VV-10的加入提高了涂膜的耐水性,从而成功地制备了固含量为80%,综合性能优良的含氟羟基丙烯酸酯树脂。 相似文献
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介绍了羟基丙烯酸树脂的水分散规律及原理、溶液聚合的溶剂及水分散的助溶剂的选用方法。综述了制备高固体分低黏度羟基丙烯酸树脂水分散体的研究进展,主要包括提高聚合温度、选用过氧化二叔戊基等引发剂合成低分子量低交联度聚合物;合成核壳结构或以叔碳酸缩水甘油酯、叔碳酸乙烯酯、甲基丙烯酸苄酯、(甲基)丙烯酸异冰片酯、甲基丙烯酸环己酯、甲基丙烯酸叔丁基环己酯等功能单体合成枝化结构羟基丙烯酸树脂;采用多步聚合工艺制备具有特殊结构或较低分子量的共聚物,并对其原理进行了简要分析。最后总结了羟基丙烯酸树脂水分散体目前存在的一些问题,主要包括耐水耐溶剂性、稳定性、成膜性等;并对解决上述一系列问题的研究方向进行了展望,主要包括树脂结构、成膜机理、涂料配方等。 相似文献
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将甲基丙烯酰氯和氢化松香醇按酰氯与羟基物质的量之比1∶1进行酯化反应合成了甲基丙烯酸氢化松香醇酯,并采用FT-IR、GC-MS、 13C NMR 和DSC对其进行分析和表征。结果表明,甲基丙烯酸氢化松香醇酯主要由甲基丙烯酸四氢松香酯、甲基丙烯酸二氢松香酯、甲基丙烯酸去氢松香酯和少量氢化松香甲酯组成,前3个组分质量分数总和为 78.76 %,所制备的甲基丙烯酸氢化松香醇酯在引发剂的存在下可以发生聚合反应,其聚合活性比丙烯酸氢化松香醇酯高,均聚物玻璃化转变温度为-11.32 ℃,可作为反应型增黏树脂在压敏胶黏剂中使用。 相似文献
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以环氧树脂E-20,甲基丙烯酸甲酯,苯乙烯及丙烯酸丁酯为主要单体,丙烯酸(AA),甲基丙烯酸羟乙酯(HEMA)和叔碳酸缩水甘油酯(E-10P)为功能单体,巯基乙醇(ME)为链转移试剂在二丙二醇甲醚和丁醇的混合溶剂中采用溶液聚合工艺,通过后期加水分散制备了水溶性改性羟基丙烯酸树脂。通过对合成树脂粘度和分子质量以及涂膜性能的检测研究了反应物用量对产物性能的影响。结果表明:E-20,E-10P,ME及引发剂质量分数分别为为10%,15%,0.3%和1.2%时,可以得到性能优异的水溶性环氧改性羟基丙烯酸树脂,以其所配制的水性烘烤涂料满足水性玻璃酒瓶漆的要求。 相似文献
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低氟含量低表面能自清洁氟碳涂料的研究 总被引:3,自引:0,他引:3
以氟单体和丙烯酸酯类单体通过聚合物的分子结构设计,合成了一类总氟含量不超过12%的低氟含量的含氟丙烯酸树脂,所制备的氟碳涂料的涂层的表面能低,具有自清洁功能。分析了该涂层中极性与非极性官能团的分子取向机理,测定了纯水水珠在不同含氟单体均聚物和共聚物清漆漆膜上以及在含氟丙烯酸树脂涂层上的接触角,探明了含氟丙烯酸树脂涂层的总氟含量与表面能的关系、含氟官能团在涂层中的分布,探讨了低氟含量的含氟丙烯酸树脂涂料的涂层自清洁机理。 相似文献
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制备了纳米CaCO3复合丙烯酸涂料,通过对其主要性能进行检测表明,当改性纳米CaCO3的添加量为1.5%(质量)时,涂料的耐光性、耐水性、自洁性和贮存稳定性等显著改善。研究了添加轻钙、未改性纳米CaCO3、改性纳米CaCO3及其用量对丙烯酸涂料流变性的影响,结果表明,该体系的流动特性均符合Casson模型;当在丙烯酸涂料中添加1.5%改性纳米CaCO3时,其黏度对温度的敏感性下降,黏度显著降低,剪切稀化能力较强,Casson屈服应力较小,触变性增大,涂料性能改善与其流变性变化基本一致。此外,固体分改变或添加丁醇对添加改性纳米CaCO3复合丙烯酸涂料和传统丙烯酸涂料流变性的影响规律基本相同。 相似文献
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双组分道路标线涂料的制备与应用 总被引:3,自引:0,他引:3
采用活性丙烯酸树脂与丙烯酸单体为基体,用引发剂交联固化,制备出具有黏度低、固体含量高、固化时间适宜、低污染、耐磨、与玻璃珠粘结牢固、耐候性好等特点的双组分道路标线涂料。着重讨论涂料配方中的树脂、活性单体、钛白粉的用量及填料粒径的合理级配。 相似文献
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María Luisa Barrueso-Martínez Teresa del Pilar Ferrándiz-Gómez María Dolores Romero-Sánchez José Miguel Martín-Martínez 《The Journal of Adhesion》2013,89(8-9):805-824
Different amounts (50-170 php--parts per hundred parts of EVA, 33-63 wt%) of two tackifiers (hydrogenated rosin ester, polyterpene resin) were added to an ethylene vinyl acetate (EVA) copolymer containing 28 wt% vinyl acetate. The EVA and the tackifier were characterized using infrared (IR) spectroscopy, DSC measurements, and stress-controlled plate-plate rheology. The properties and compatibility of the EVA-tackifier mixtures were studied using DSC, DMTA, and stress-controlled plate-plate rheology. Immediate adhesion was measured as a quantification of tack, and the T-peel strength of roughened styrene-butadiene rubber/EVA-tackifier adhesive joints was also obtained. The increase in the amount of tackifier noticeably changed the crystallinity of polyethylene blocks in the EVA, and the temperature at the cross-over between the curves of the storage and loss moduli as a function of the temperature was displaced to a lower value. Whereas the hydrogenated rosin ester was compatible with the amorphous ethylene vinyl acetate copolymer regions of the EVA (Tg value increased) reducing its crystallinity, the polyterpene resin was compatible with the polyethylene blocks of the EVA (T g value was not modified), increasing its crystallinity. Immediate adhesion of the EVA-tackifier mixtures was improved by adding both hydrogenated rosin ester and polyterpene tackifiers. On the other hand, there was an optimum tackifier content at which the maximum T-peel strength value was obtained. 相似文献
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CHARACTERIZATION OF EVA-BASED ADHESIVES CONTAINING DIFFERENT AMOUNTS OF ROSIN ESTER OR POLYTERPENE TACKIFIER 总被引:1,自引:0,他引:1
Marí a Luisa Barrueso-Martí nez Teresa del Pilar Ferr ndiz-G mez Marí a Dolores Romero-S nchez Jos Miguel Martí n-Martí nez 《The Journal of Adhesion》2003,79(8):805-824
Different amounts (50-170 php--parts per hundred parts of EVA, 33-63 wt%) of two tackifiers (hydrogenated rosin ester, polyterpene resin) were added to an ethylene vinyl acetate (EVA) copolymer containing 28 wt% vinyl acetate. The EVA and the tackifier were characterized using infrared (IR) spectroscopy, DSC measurements, and stress-controlled plate-plate rheology. The properties and compatibility of the EVA-tackifier mixtures were studied using DSC, DMTA, and stress-controlled plate-plate rheology. Immediate adhesion was measured as a quantification of tack, and the T-peel strength of roughened styrene-butadiene rubber/EVA-tackifier adhesive joints was also obtained. The increase in the amount of tackifier noticeably changed the crystallinity of polyethylene blocks in the EVA, and the temperature at the cross-over between the curves of the storage and loss moduli as a function of the temperature was displaced to a lower value. Whereas the hydrogenated rosin ester was compatible with the amorphous ethylene vinyl acetate copolymer regions of the EVA (Tg value increased) reducing its crystallinity, the polyterpene resin was compatible with the polyethylene blocks of the EVA (T g value was not modified), increasing its crystallinity. Immediate adhesion of the EVA-tackifier mixtures was improved by adding both hydrogenated rosin ester and polyterpene tackifiers. On the other hand, there was an optimum tackifier content at which the maximum T-peel strength value was obtained. 相似文献
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随着全球降低涂料中VOC含量的环境法规出台,汽车修补漆正由传统溶剂型涂料向高固体分、水性化方向发展。通过丙烯酸单体、引发剂、链转移剂和合成条件的选择,开发了一种黏度适中的固体分达70%的丙烯酸树脂。该树脂与异氰酸酯固化剂配合应用于汽车修补漆,其性能完全达到市售国外同类树脂的水平。 相似文献
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双丙烯酸改性松香酯多元醇的性能测试与分析 总被引:11,自引:0,他引:11
由松香与丙烯酸进行D-A加成反应制得丙烯酸改性松香,再与乙二醇、二甘醇、三甘醇酯化制得双丙烯酸改性松香酯多元醇。测试了酯化产物的分子量、聚合度、粘度、羟值和官能度等理化参数,并对各产物的耐热性和红外光谱进行了分析,结果表明,酯化产物可作为耐热的多元醇原料使用。 相似文献