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合成了两种含联萘结构的环氧树脂2,2’-二(9-环氧基壬酰氧基)-1,1’-联萘(R1)和2,2’-二(3-环氧基丙酰氧基)-1,1’-联萘(R2)。通过1HNMR和EA对目标产物结构进行了表征。以4,4’-二氨基二苯基甲烷(DDM)为固化剂,通过Ozawa法计算出R1/DDM和R2/DDM固化体系的反应活化能(E_a)分别为56.29和56.88 k J/mol,随着固化反应转化率(α)的增加,R1/DDM的E_a不断增大,而R2/DDM的E_a略微减小。考察了不同长度碳链对固化物的热稳定性、玻璃化转变温度(T_g)、力学性能和吸水率的影响。结果表明:短碳链的R2/DDM较长碳链的R1/DDM,固化物的初始分解温度由220.3℃下降到210.5℃,800℃下残炭率由3.45%上升至6.77%,T_g由135℃上升到141℃,断裂伸长率由6.7%下降至4.3%,吸水率由0.35%降至0.28%。
Two kinds of 2,2’-bis (9-epoxynonanoyloxy) -1,1’-binaphthyl (R1) and 2,2’-bis Epoxypropionyloxy) -1,1’-binaphthyl (R2). The structure of the target product was characterized by1H NMR and EA. The reaction activation energy (E_a) of the cured system of R1 / DDM and R2 / DDM was 56.29 and 56.88 kJ / mol calculated by the Ozawa method with 4,4’-diaminodiphenylmethane (DDM) as the curing agent, With the increase of the conversion of curing reaction (α), the E_a of R1 / DDM increases and the E_a of R2 / DDM decreases slightly. The effects of carbon chains with different lengths on the thermal stability, glass transition temperature (T_g), mechanical properties and water absorption of cured products were investigated. The results showed that the initial decomposition temperature of R1 / DDM and shortened chain of R2 / DDM for short carbon chain from 220.3 ℃ to 210.5 ℃ increased from 3.45% to 6.77% at 800 ℃, T_g from 135 ℃ to 141 ℃, the elongation at break decreased from 6.7% to 4.3%, and the water absorption decreased from 0.35% to 0.28%.