花椒籽油水溶性醇酸树脂的制备与性能研究

Synthesis and Properties of Water-Soluble Alkyd Resin Based on Zanthoxylum Bungeanum Seed Oil

以非食用性花椒籽油(ZSO)、三羟甲基丙烷(TMP)、多元酸和水性单体偏苯三酸酐(TMA)作为主要原料,采用醇解、酯化和中和三步合成水溶性的醇酸树脂。考察了制备水溶性醇酸树脂的最佳配方和醇解催化剂的用量,并对树脂的结构和粒径分布进行了表征和测试。结果表明:油度为50%,醇超量为10%~12.5%,最终酸值控制在60~50 mg KOH/g,邻苯二甲酸酐(PA)、间苯二甲酸(IPA)、苯甲酸(BA)的物质的量之比为2∶1∶1时,制得的花椒籽油水溶性醇酸树脂表现出优异的干燥时间和良好的硬度、附着力、柔韧性和耐水性,具有较好的经济效益和环保效益。

A water-soluble alkyd resin was synthesized via a three-stage process of alco- holysis, polyesterification and neutralization by using non-edible zanthoxylum bungeanum seed oil （ZSO）, thrihydroxymethyl propane （TMP）, polyatomic acids and 1,2,4-benzeneti- carboxylic anhydride （TMA） as main raw materials. The optimal synthetic formulation of the water-soluble alkyd resin and the amount of catalyst NaOH for alcoholysis reaction were investigated. The structure of the alkyd resin was characterized by means of FT-IR and the particle size distribution. Results showed that the film properties of ZSO water-soluble alkyd resin exhibited excellent dry time, good hardness, adhesion, flexibility and water resistance when the process satisfied the following conditions： oil length 50%, alcohol excess 10%-12.5%, final acid value 60- 50 mg KOH/g and mole radio of PA/IPA/BA 2 ： 1 ： 1, meanwhile, the process could bring about good economic and environmental benefits.