CAJ | 학술논문

麦芽糖-三聚氰胺-甲醛共缩聚( MMF)树脂是以麦芽糖、三聚氰胺和甲醛为主要原料, 在碱性条件下合成而得. 研究了麦芽糖与三聚氰胺的摩尔比(Mmal:Mmel)以及固化剂对树脂热稳定性能的影响, 利用DSC和FT-IR 对树脂固化行为以及特征官能团的变化进行了测试分析, 并用Kissinger-Crane-Arrhenius方程对MMF树脂固化动力学进行了探讨. 结果表明: (1) MMF树脂固化后形成了稳定的三维网络结构,游离活性基团的数量明显降低; (2) MMF树脂的热分解过程可以分为3 个阶段, 以氯化铵为固化剂引入MMF树脂后, 体系的热稳定性能明显增强, 具有更好的耐久性和热稳定性; (3) MMF树脂的固化为放热过程, 相比MF树脂, MMF树脂固化放热焓值更大, 固化反应更容易进行; (4) MMF树脂样品的表观活化能为72.74 kJ/mol, MMF树脂固化体系的动力学模型为dα/dt =4.26 ×1010 ×e72740/(RTp)(1 -α)0.93 .
맥아당-삼취청알-갑철공축취( MMF)수지시이맥아당、 삼취청알화갑철위주요원료, 재감성조건하합성이득. 연구료맥아당여삼취청알적마이비(Mmal:Mmel)이급고화제대수지열은정성능적영향, 이용DSC화FT-IR 대수지고화행위이급특정관능단적변화진행료측시분석, 병용Kissinger-Crane-Arrhenius방정대MMF수지고화동역학진행료탐토. 결과표명: (1) MMF수지고화후형성료은정적삼유망락결구,유리활성기단적수량명현강저; (2) MMF수지적열분해과정가이분위3 개계단, 이록화안위고화제인입MMF수지후, 체계적열은정성능명현증강, 구유경호적내구성화열은정성; (3) MMF수지적고화위방열과정, 상비MF수지, MMF수지고화방열함치경대, 고화반응경용역진행; (4) MMF수지양품적표관활화능위72.74 kJ/mol, MMF수지고화체계적동역학모형위dα/dt =4.26 ×1010 ×e72740/(RTp)(1 -α)0.93 .
Maltose-Melamine-Formaldehyde ( MMF) resin was synthesized by the main raw materials of malt-ose, melamine and formaldehyde in alkaline condition.The effect of maltose content (Mmal:Mmel)and the cata-lyst on thermal stabilities were studied by Thermal Gravity Analysis ( TGA) .The curing behavior and functional groups of MMF resin were measured by Different Scanning Calorimetry ( DSC ) and Fourier Transform Infrared Spectroscopy ( FT-IR) .The activation energy and model of curing behavior were calculated by Kissinger-Crane-Arrhenius equation.The results showed that MMF resin turned to be a more stable network structure and less ac-tive group after curing reaction.The TGA showed that there would be three stages in the thermal decomposition process of MMF resin.The ammonium chloride could be a good catalyst for MMF to enhance the thermal stability. The curing behavior of MMF resin was an exothermic process and easier for MMF resin in curing reaction as the more heat enthalpy will be released than MF resin.The activation energy value of MMF resin was 72.74 kJ/mol, and the model of curing behavior was dα/dt =4.26 ×1010 ×e72 740/RTp(1 -α)0.93.