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通过2,4,6-三(4-羟基苯基)吡啶(HPP)与溴丙炔反应,合成了2,4,6-三(4-炔丙氧基-苯基)吡啶(POPP)。采用FTIR、1H-NMR、13C-NMR和元素分析对其结构进行了表征,并制备了交联树脂P(POPP)。采用旋转流变仪,示差扫描量热分析,动态力学热分析,热失重分析等研究了POPP及P(POPP)树脂的性能。结果表明,POPP树脂可溶于大多数常见有机溶剂,确定其固化工艺为:200℃/2 h+220℃/8 h。P(POPP)具有良好的热性能,玻璃化转变温度高于其热分解温度,氮气中5%热失重温度达435℃,25℃下10~106 Hz频率内介电常数和介电损耗角正切值分别小于3.14和0.01。
2,4,6-tris (4-propargyloxy-phenyl) pyridine (POPP) was synthesized by the reaction of 2,4,6-tris (4-hydroxyphenyl) pyridine (HPP) with bromopropyne. Its structure was characterized by FTIR, 1H-NMR, 13C-NMR and elemental analysis, and crosslinked resin P (POPP) was prepared. The properties of POPP and P (POPP) resins were investigated by using rotational rheometer, differential scanning calorimetry, dynamic mechanical thermal analysis, and thermogravimetric analysis. The results show that POPP resin is soluble in most common organic solvents and the curing process is determined as follows: 200 ℃ / 2 h + 220 ℃ / 8 h. P (POPP) has good thermal properties, the glass transition temperature is higher than its thermal decomposition temperature, the 5% weight loss temperature in nitrogen reaches 435 ℃, the dielectric constant and dielectric loss tangent in 10 ~ 106 Hz at 25 ℃ Values were less than 3.14 and 0.01 respectively.