烯丙基改性生漆的合成及其光/氧固化特性研究  

Synthesis of Allyl Modified Lacquer and Its Characteristics of UV/Oxygen Curing

作　　者：陈健[1] 吴国民[1] 霍淑平[1] 孔振武[1] CHEN Jian;WU Guomin;HUO Shuping;KONG Zhenwu(Institute of Chemical Industry of Forest Products,CAF,National Engineering Lab.for Biomass Chemical Utilization,Key Lab.of Chemical Engineering of Forest Products,National Forestry and Grassland Administration,Key Lab.of Biomass Energy and Material,Jiangsu Province,Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing 210042,China)

机构地区：[1]中国林业科学研究院林产化学工业研究所,生物质化学利用国家工程实验室,国家林业和草原局林产化学工程重点实验室,江苏省生物质能源与材料重点实验室,江苏省林业资源高效加工利用协同创新中心,江苏南京210042

出　　处：《林产化学与工业》2022年第2期1-9,共9页Chemistry and Industry of Forest Products

基　　金：国家重点研发计划资助项目(2017YFD0601305)。

摘　　要：以生漆为原料,与烯丙基缩水甘油醚(AGE)反应制备了烯丙基醚改性生漆(AGE-L),再与甲基丙烯酸酐(MAA)反应合成了烯丙基醚酯改性生漆(MAA-AGE-L),采用FT-IR、^(1)H NMR和^(13)C NMR等方法对其结构进行了表征,并测试其理化性能。进一步研究了生漆、AGE-L和MAA-AGE-L的紫外光和氧气(空气)固化过程,并测试了漆膜的机械性能及耐化学介质性能。研究结果表明:AGE-L和MAA-AGE-L已经成功合成,两者均为棕红色液体,其中AGE-L的羟值193 mg/g、碘值1.89 g/g、黏度400 mPa·s;MAA-AGE-L的羟值20 mg/g、碘值1.38 g/g、黏度2000 mPa·s。与生漆相比,MAA-AGE-L漆膜在温度30℃、相对湿度80%的氧气(空气)环境下表干时间由2 h缩短至50 min,紫外光固化表干时间由50 s缩短至10 s;AGE-L经紫外光照射120 s时的漆膜铅笔硬度达到H,经温度30℃、相对湿度80%的氧气(空气)环境下固化一周的漆膜铅笔硬度达到2H,同时均具有较好的附着力、柔韧性和抗冲击强度;烯丙基改性生漆经2种固化方式形成的漆膜均具有较好的耐水、耐乙醇、耐盐水和耐酸性能。The allyl ether modified lacquer(AGE-L)was successfully prepared by the reaction of lacquer with allyl glycidyl ether(AGE),and subsequently reacted with methacrylic anhydride(MAA)to form a novel lacquer-based monomer with ether bond and ester bond(MAA-AGE-L).Their structures were then characterized by FT-IR,^(1)H NMR and ^(13)C NMR,and their physical and chemical properties were tested.Additionally,the UV and oxygen(air)curing processes of raw lacquer,AGE-L and MAA-AGE-L were investigated,and the mechanical properties as well as the resistances to chemical media of the cured films were also studied.The results confirmed the successful synthesis of AGE-L and MAA-AGE-L,w hich were all brownish red liquids.The hydroxyl value of AGE-L was 193 mg/g,the iodine value was 1.89 g/g and the viscosity was 400 mPa·s.The hydroxyl value of MAA-AGE-L was 20 mg/g,the iodine value was 1.39 g/g and the viscosity was 2000 mPa·s.Compared with lacquer,the surface drying time of MAA-AGE-L was shortened from 2 h to 50 min in presence of the oxygen(air)environment at 30℃with the relative humidity of 80%,and the UV curing surface drying time was shortened from 50 s to 10 s.The pencil hardness of the cured film was H when AGE-L was irradiated by ultraviolet light for 120 s,whereas the pencil hardness of the paint film cured under oxygen(air)for one week was 2H.Moreover,they exhibited good adhesion,flexibility and impact strength.Allyl-modified lacquer films obtained by two curing methods had good water resistance,ethanol resistance,salt water resistance and acid resistance.

关 键 词：生漆 漆酚 烯丙基缩水甘油醚 紫外光固化 双固化 

分 类 号：TQ35[化学工程]