检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:杨玉芬[1] 崔建兰[1] 要晓丽[1] 陈啟虎[1] 张永晖[1]
机构地区:[1]中北大学化工与环境学院,山西省太原市030051
出 处:《合成树脂及塑料》2012年第3期26-29,34,共5页China Synthetic Resin and Plastics
摘 要:以苯酚、甲醛、环氧氯丙烷为原料,乙二酸为催化剂,合成了双酚F及其环氧树脂,并通过红外光谱、核磁共振氢谱对产物进行了表征。研究了低黏度高环氧值液态双酚F型环氧树脂的合成工艺及性能。环氧氯丙烷与双酚F摩尔比为10.0∶1.0,催化剂四丁基溴化铵与双酚F的摩尔比为2.0∶100.0,反应温度70℃,醚化时间5 h,闭环时间2 h,酚羟基与NaOH的摩尔比为1.1∶1.0时,得到的双酚F型环氧树脂的环氧值为0.65~0.68 mol/100 g,黏度为1.3 Pa.s。研究表明,含多酚的双酚F合成的环氧树脂对材料的冲击强度影响较大。Bisphenol F and its epoxy resin were synthesized from phenol, formaldehyde and epichlorohydrin with oxalic acid as catalyst. The resultant products were characterized by infrared spectroscopy(IR) and hydrogen nuclear magnetic resonance (1H-NMR). The synthesis technology and properties of the liquid bisphenol F epoxy resin with low viscosity and high epoxide number were studied. The epoxy resin had epoxide number of 0.65- 0.68 mol/100 g and viscosity of 1.3 Pa's when it was prepared under the conditions of setting the molar ratios of epoxy chloropropane to bisphenol F at 10.0 : 1.0, catalyst tetrabutyl ammonium bromide to bisphenol F at 2.0 : 100.0, hydrogen of phenolic group to NaOH at 1.1 : 1.0, the reaction temperature at 70 ℃ and the etherification time of 5 h and closed-loop time of 2 h. The study shows that epoxy resin synthesized fiom hisphenol F containing polyphenol has a great influence on the impact strength of the material.
分 类 号:TQ323.5[化学工程—合成树脂塑料工业]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.249