双酚A型环氧树脂胶粘剂的合成及配制

Preparation of Bisphenol A Type Epoxy Resin Adhesive

以苯酚与丙酮为原料,以硫酸为催化剂,在助催化剂甲苯的作用下合成了2,2-二羟苯基丙烷,即双酚A。研究了硫酸的滴加速度、助催化剂甲苯的用量、反应温度、反应时间对双酚A收率的影响,并得出最佳的反应条件为:硫酸约每min 13滴,甲苯与苯酚质量比为1∶4,反应时间为2 h,反应温度为35℃。收率为22.78%。双酚A的熔点为154～158℃。通过对所得产品的红外光谱与双酚A的标准红外光谱对比,可以基本证明所合成的产物就是双酚A。利用所合成的双酚A与环氧氯丙烷反应,采用一步法合成路线,制备了双酚A型环氧树脂,合成过程中对双酚A与环氧氯丙烷的配比、碱的用量和反应温度等因素对其环氧值的影响进行了分析讨论。所制备的环氧树脂的环氧值为0.475,配制的胶粘剂的室温固化时间为3 h。在外力作用下,两铝片粘结的固化时间为2.0 h,无外力作用时,两铝片粘结的固化时间为2.5 h。对玻璃与铜电极进行粘结的室温固化时间为3.5 h,玻璃与铝电极粘结的固化时间为3.5 h。

In this thesis,phenol and acetone as raw materials and sulfuric acid as catalyst,toluene catalyst role in the synthesis of 2,2-dihydroxy diphenyl propane,that is bisphenol A.Experimental studies of sulfuric acid droplets in the acceleration,the amount of toluene catalyst,reaction temperature,reaction time on the yield of bisphenol A,and the optimum reaction conditions were：13 drops of sulfuric acid about every minute,toluene and phenol quality Ratio of 1∶4,the reaction time of two hours,the reaction temperature is 35 ℃.Yield of 22.78%.Melting point of bisphenol A,154～158 ℃.Products obtained by the infrared spectra of a standard bisphenol A comparison of infrared spectrum,you can prove the synthesis of the basic product is bisphenol A.Synthesized by the reaction of bisphenol A and epichlorohydrin,using one-step synthetic route,preparation of bisphenol-A epoxy resin,synthesis of bisphenol A and epichlorohydrin in the ratio,the amount of alkali and Reaction temperature,the impact of its epoxy value were discussed.Epoxy resin prepared by the epoxy value 0.475,the preparation of the adhesive curing time at room temperature 3h.The external force,the two curing time for bonding aluminum 2.0h,no external force,the two curing time for bonding aluminum 2.5h.Copper electrode on the glass and room temperature curing time for bonding 3.5h,glass and aluminum electrodes curing time for bonding 3.5h.