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以高岭土、乙酸锌、氢氧化钠为复合催化剂,通过复合催化体系合成了己内酰胺改性可发性酚醛树脂。采用DSC,IR等技术对其进行了表征。之后制得新型改性酚醛树脂泡沫材料。通过DSC进一步研究改性可发性酚醛树脂的固化反应动力学,运用Kissinner方程求出活化能、斜率和相关系数等动力学参数,结果表明己内酰胺改性后的酚醛树脂固化过程中有新的固化反应参与,一定程度上增加了反应活化能,而这恰恰有助于解决在树脂实际应用过程中固化速度过快的问题。此外,研究了己内酰胺改性后酚醛树脂泡沫材料的表观密度、质量磨耗率与发泡形态等因素;确定了己内酰胺改性酚醛泡沫材料的优化发泡工艺。
With caprolactam, zinc acetate and sodium hydroxide as catalyst, the caprolactam modified phenolic resin was synthesized by the composite catalyst system. It was characterized by DSC, IR and other techniques. After a new type of modified phenolic resin foam. The curing reaction kinetics of modified phenolic resin was further studied by DSC. The kinetic parameters such as activation energy, slope and correlation coefficient were calculated by Kissinner equation. The results showed that there was a new curing in the curing process of caprolactam modified phenolic resin Reactive participation, to a certain extent, increased the activation energy, and this just helps to solve the problem of curing too fast in the actual application of the resin. In addition, the apparent density, mass wear rate and foaming morphology of phenolic resin foams modified with caprolactam were studied. The optimum foaming process of caprolactam modified phenolic foam was determined.