桐油改性胺的制备及其在环氧防腐涂料中的应用性能  

Preparation of Tung Oil-modified Amine and Its Application Performance in Epoxy Anti-corrosion Coatings

作　　者：姚娜 杨小华[1] 夏建陵[1] 李梅[1] 张燕[1] YAO Na;YANG Xiaohua;XIA Jianling;LI Mei;ZHANG Yan(Institute of Chemical Industry of Forest Products,CAF,Key Lab.of Biomass Energy and Material,Jiangsu Province,Key Lab.of Chemical Engineering of Forest Products,National Forestry and Grassland Administration,National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass,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、江苏省生物质能源与材料重点实验室、国家林业和草原局林产化学工程重点实验室、林木生物质低碳高效利用国家工程研究中心、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》2023年第6期107-112,共6页Chemistry and Industry of Forest Products

基　　金：中国林科院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2020ZE004)。

摘　　要：为提升多元胺固化剂的柔韧性、耐腐蚀性、耐水性和低温固化性,以桐油为原料经酯交换、弗里德-克拉夫茨取代、曼尼希碱缩合、酰胺化反应合成一款新型桐油改性胺(TPH)固化剂,对其物化指标进行了表征,测试了单官能团(苄基缩水甘油醚)和双官能团(1,4-丁二醇二缩水甘油醚)活性稀释剂的添加量对环氧防腐涂料涂层性能的影响,以及涂膜的机械力学性能、防腐性能,并与腰果酚酚醛胺(PCD)固化漆膜的性能进行比较。研究结果表明:防腐涂料中稀释剂添加量为10%时,TPH漆膜的表干时间和实干时间分别为40和90 min,其冲击柔韧性80 cm、柔韧性1 mm、硬度5H、耐冲击性≥40 cm,耐热性(150℃±3℃,4 h)漆膜轻微起泡、不脱落,耐湿热(47℃±1℃、相对湿度96%±2%、1000 h)和耐盐雾(1500 h)无生锈、无气泡、无变色,耐航空煤油(168 h)硬度达4H、耐4109发动机润滑油(121℃±3℃,24 h)和耐15#液压油(66℃±3℃,24 h)表现为漆膜不起泡,不脱落,耐溶剂性能优良。与PCD漆膜相比,TPH漆膜具有优异的冲击柔韧性、硬度、耐高低温性以及耐溶剂性能。In order to improve the flexibility,corrosion resistance,water resistance and low temperature curing ability of polyamine curing agent,a new type of tung oil-modified amine(TPH)curing agent was synthesized from tung oil through transesterification,Friedel-Crafts substitution,Mannich base condensation and amidation.The physicochemical indicators were characterized.The effect of the addition amount of monofunctional(benzyl glycidyl ether)and difunctional(1,4-butanediol diglycidyl ether)reactive diluent on the coating properties,and the mechanical properties and anti-corrosion properties of the coating were tested,which were compared with the properties of the cardanol phenalkamine(PCD)cured paint film.The results showed that when the amount of diluent in the anti-corrosion coating was 10%,the tack-free and hard drying time of TPH paint film surface was 40 and 90 min,respectively.Its impact toughness was 80 cm,flexibility was 1 mm,pencil hardness was 5H,and impact resistance was≥40 cm.Heat resistance(150℃±3℃,4 h)showed slightly foaming paint film without falling off,the heat and humidity resistance was 1000 h under the temperature of 47℃±1℃,and the relative humidity of 96%±2%,and salt spray resistance showed no rust,no bubbles,and no discoloration(1500 h).The hardness of aviation kerosene(168 h)was up to 4H,and 4109 engine lubricant(121℃±3℃,24 h)and 15#hydraulic oil(66℃±3℃,24 h)all showed non-foaming and non-falling off.Compared with PCD film,TPH film had excellent impact flexibility,pencil hardness,high and low temperature resistance and solvent resistance.

关 键 词：桐油改性胺 腰果酚酚醛胺 机械力学性能 防腐性能 

分 类 号：TQ35[化学工程]