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死漆研磨法制备一种快干漆的研究 被引量:1

Quick-drying Lacquer Prepared by Grinding Method
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摘要 以死漆为原料,在室温无溶剂条件下与钛化合物混合后通过研磨法制备一种快干漆(QDL)。采用红外光谱、扫描电镜和热失重等表征手段对试样进行结构和性能表征,并探讨了生漆中不同成分对试样固化成膜的影响。结果表明:死漆与钛化合物混合研磨能够固化成膜的主要物质是漆酚,研磨过程中死漆油包水型乳液结构被破坏;当n(钛化合物)∶n(死漆)为1∶2时,研磨得到的涂膜表干和实干时间最短分别为1.5和6 h,远快于天然生漆的干燥速度;n(钛化合物)∶n(死漆)为1∶2、1∶3、1∶4研磨制得的QDL1、QDL2、QDL3都具有较高的光泽度,比天然生漆膜高出50之多。其中,快干漆QDL1的质量损失5%、10%和最大热失重温度分别为289、346和475℃,比天然生漆相应质量损失温度高,具有比自然干燥天然生漆膜更好的耐热性能。 A quick-drying lacquer ( QDL) was prepared from the dead lacquer and titanium compound grinded at ambient and solvent-free condition. The structure and properties of the products were studied by IR, SEM and TG. The influence of main specific components of raw lacquer on the curing was discussed. The results showed that urushiol was the main component for film formation in the grinding process. The water-in-oil emulsion of dead lacquer was damaged in grinding process. When the mole ratio of titanium compound to urushiol was 1:2, the drying time was shortest. The surface drying time and hard drying time of the obtained film were 1. 5 and 6 h, respectively, which were far more quickly than natural lacquer . QDL1, QDL2 and QDL3 were obtained through grinding process when the mole ratio of titanium compound to urushiol were 1:2, 1:3 and 1:4. All the obtained films had high gloss, the gloss values were 50 higher than that of natural lacquer films. The temperatures at 5 % weight loss, 10 % weight loss and maximum weight loss of QDL1 were 289, 346 and 475 ℃, respectively, which was higher than natural lacquer on counterpart time by 21, 35 and 28 ℃. This indicated that the thermostability of the QDL films was better than that of laccase-catalyzed lacquer films.
出处 《林产化学与工业》 EI CAS CSCD 北大核心 2014年第3期27-30,共4页 Chemistry and Industry of Forest Products
基金 国家自然科学基金资助项目(51073037)
关键词 死漆 钛化合物 研磨法 耐热性 dead lacquer titanium compound grinding method thermostability
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参考文献13

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