水性油墨用聚酰胺树脂的合成与性能研究
摘要： 由油酸二聚酸(ODA)、聚合松香(PR)、乙二胺(EDA)经缩聚反应得到低相对分子质量端羧基聚酰胺树脂(CLMPA),而后再与己二酸(AA)、环氧树脂(E-51)开环聚合反应得多羟基聚酰胺树脂(PHPA),最后与甲基四氢苯酐(Me-THPA)酯化,得到多羧基聚酰胺树脂(PCPA),中和成盐,得阴离子型水性聚酰胺树脂(AWPA)。通过考察目标产物水溶性、涂膜的耐水性、相对分子质量(Mr)、黏度及玻璃化转变温度(Tg)研究了PR和ODA的物质的量之比(PR/ODA)、CLMPA和AA的物质的量之比(CLMPA/AA)对AWPA性能的影响,并通过红外光谱和核磁共振氢谱对各中间体及目标产物进行了表征。结果表明:当PR/ODA为4:6、CLMPA/AA为2:10时,合成的聚酰胺树脂溶于水,Mr7264,吸水率27.6%,黏度42.3Pa·s(100℃),Tg47.15℃。
关键词: 水性油墨, 聚酰胺树脂, 聚合松香
Abstract: Carboxyl-terminated and low-molecular weight polyamide(CLMPA)was synthesized from polycondensation reaction among oleic dimeric acid(ODA), polymerized rosin(PR)and 1,2-ethylenediamine(EDA). Polyhydroxy polyamide(PHPA)was obtained by ring-opening polymerization among adipic acid(AA), epoxy-51(E-51)and CLMPA. Polycaoboxylic polyamide(PCPA)was synthesized by esterification of PHPA with methyltetrahydrophthalic anhydride(Me-THPA), and anionic water-soluble polyamide resin(AWPA)was obtained by means of salt-formation from neutralization. The effects of PR/ODA,CLMPA/AA on the properties of the water-soluble polyamide such as water solubility,water resistance,relative molecular mass(Mr), viscosity and glass transition temperature(Tg)were investigated. The structures of the intermediates and the target product were characterized by FT-IR and 1H NMR. The results showed that the optimum molar ratios were as followed: molar ratio of PR to ODA was 4:6, molar ratio of CLMPA to AA was 2:10, the polyamide resin was water soluble, with Mr 7264, water absorption 27.6%, viscosity 42.3 Pa·s(100℃) and Tg 47.15℃.
Key words: water-based inks, polyamide resin, polymerized rosin
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丁海阳;夏建陵;李梅;连建伟;杨小华;张燕. 水性油墨用聚酰胺树脂的合成与性能研究[J]. 林产化学与工业, 2010, 30(2): 27-31.
DING Hai-yang;XIA Jian-ling;LI Mei;LIAN Jian-wei;YANG Xiao-hua;ZHANG Yan. Synthesis and Property of Polyamide Resin for Water-based Inks[J]. , 2010, 30(2): 27-31.
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