摘要
通过丙烯海松酸(APA)和二聚脂肪酸(DA)按一定比例混合,与环氧氯丙烷(ECH)进行酯化反应、闭环反应,合成了APA与DA复合环氧树脂。重点研究了酯化阶段反应温度、反应时间及催化剂用量等影响因素;闭环阶段反应温度、碱的形态及ECH用量对闭环反应的影响。在适宜的合成条件和配比下,每100g环氧树脂环氧值为0.26eq,粘度(40℃)为530mPa·s,酸值为0.3mg/g。对原料与产物环氧树脂红外光谱进行了分析对比。
Gum rosin is a natural forest chemical resourses in China containing abundant constituents of abietic-type resin acids. Acrylpimaric acid （APA） was made by abietic-type resin acids and acrylic acid, In this paper, a complex epoxy resin was synthesized by esterification and ring-closure of acrylpimaric acid and C-36 dimeric acid（ DA ） with excessive epichlohydrin（ECH）. The influences of reaction parameters were discussed respectively, such as esterification time and temperature, catalyst dosage, ring-closing temperature, dosages of ECH, NaOH, etc. The complex epoxy resin synthesized under suitable condition had the following properties： epoxy value 0.26 eq per 100 g, viscosity at 40 ℃ 1 220 mPa · s, acid value 0.3 mg/g. FT-IR spectra of the raw material and the product were also compared.
出处
《林产化学与工业》
EI
CAS
CSCD
2005年第3期43-46,共4页
Chemistry and Industry of Forest Products
基金
国家自然科学基金资助项目(30271060)
