松香改性腰果酚漆膜性能的研究  

Properties of Rosin-modified Cardanol Coatings

作　　者：李耀仓[1] 邵嘉薇 马红霞[1] LI Yaocang;SHAO Jiawei;MA Hongxia(Department of Chemistry and Environmental Engineering,Wuhan University of Bioengineering,Wuhan 430415,China)

机构地区：[1]武汉生物工程学院化学与环境工程学院,湖北武汉430415

出　　处：《林产化学与工业》2022年第5期56-60,共5页Chemistry and Industry of Forest Products

基　　金：武汉市属高校产学研项目(CXY201431);武汉市高等学校教学研究项目(2017167)。

摘　　要：利用松香对腰果酚改性后制备漆膜,考察了松香用量对腰果酚固化过程的影响,并对漆膜性能进行了研究。通过红外光谱法(FT-IR)分析松香改性腰果酚的固化机理及松香用量对漆膜固化速率的影响。实验结果表明:加热过程中腰果酚的酚羟基与松香的羧基发生酯化反应,松香树脂酸的不饱和结构以及腰果酚不饱和侧链发生氧化交联反应。随着松香用量的增加,腰果酚的固化速率增加,松香用量(以腰果酚质量计)为10%,在5%环烷酸钴催化下,150℃固化24 h能得到高光泽度的综合性能较佳的生物基松香改性腰果酚漆膜,其光泽度为115,附着力为1级,铅笔硬度为2H,冲击强度为35 kg/cm,柔韧性为1 mm。The coatings was prepared using the modification of cardanol by rosin, and its performance was studied. The mechanism of rosin modified cardanol and effect of rosin dosage on curing rate of coating were analyzed by FT-IR. The results showed that the phenolic hydroxyl of cardanol and the carboxylic acid of rosin were esterified during the heating process, and the unsaturated rosin structure and the unsaturated side chain of cardanol were oxidized crosslinking reaction. With the increase of rosin dosage, the curing rate of cardanol was increased. When the rosin dosage(by cardanol quality) was 10%, the bio-based rosin modified cardanol coating with high gloss and good comprehensive properties could be obtained by curing at 150 ℃ after 24 h with 5% cobalt naphthenate as catalyst. Its gloss was 115, adhesion level was 1, pencil hardness was 2 H, the impact strength was 35 kg/cm, and the flexibility was 1 mm.

关 键 词：腰果酚 松香 生物基漆膜 

分 类 号：TQ351[化学工程]