摘要
提取生漆中的主要成份漆酚，并使之与甲醛缩合，制得相对分子质量约为2.3×10^3的漆酚缩甲醛，再用H3BO3对其改性，制备了漆酚硼树脂。探讨了漆酚缩甲醛和漆酚硼树脂的合成机理，以及漆酚与H3BO3摩尔比和反应时间对漆酚硼树脂的干燥时间、硬度、附着力、柔韧性、耐冲击性等的影响。当漆酚缩甲醛与H3BO3的摩尔比为1.0∶0.8，pH值为8~9，升温至120℃左右保温反应3 h，制备的漆酚硼树脂在保留漆酚缩甲醛基本性能的同时，其柔韧性、硬度、附着力等有大幅提高。
The urushiol is extracted from raw lacquer and reacts with formaldehyde to produce urushiol formaldehyde whose molecular weight is about2.3×10^3. Then it is modified by the boric acid to prepare urushiol-boron resin. This paper discusses the mechanism of the reactions, impacts of ratio of urushiol/boric acid and reaction time on the physical properties of the resin which include adhesion, drying time, flexibility, hardness, and impact resistance. The modified urushiol-boron resin is prepared under the conditions when the ratio of urushiol/boric acid is1.0∶0.8, pH value is8-9, reaction temperature increases to120 ℃ and reaction time is3 h, whose properties are in accordance with urushiol-formaldehyde polymer, and whose adhesion, flexibility, and hardness are improved significantly as well.
出处
《合成树脂及塑料》
CAS
北大核心
2016年第4期38-40,共3页
China Synthetic Resin and Plastics
关键词
漆酚硼树脂
硼酸
合成
性能
urushiol-boron resin
boric acid
synthesis
property
