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用热分析手段研究了非离子型表面活性剂Triton X-100对4,4′-二氨基二苯甲烷环氧树脂(TGDDM)/4,4′-二氨基二苯基砜(DDS)环氧树脂固化行为和性能的影响。DSC非等温固化反应动力学研究表明,1%(质量分数,下同)的表面活性剂对固化反应有促进作用,但10%的表面活性剂抑制了固化反应。DSC的等温固化反应中,表面活性剂抑制固化反应的进行。TGA研究表明,表面活性剂的加入对环氧树脂热稳定性影响很小。DMTA研究结果说明,表面活性剂在环氧树脂中起到了增塑剂的作用,并且和环氧树脂是互容的,表面活性剂的加入使得环氧树脂的储存模量减小,玻璃化温度逐渐降低。
The effects of non-ionic surfactant Triton X-100 on the thermal stability of 4,4’-diaminodiphenylmethane epoxy resin (TGDDM) / 4,4’-diaminodiphenyl sulfone (DDS) epoxy Effect of Resin Curing Behavior and Properties. DSC kinetics of non-isothermal curing reaction showed that 1% (mass fraction, the same below) of the surfactant to promote the curing reaction, but 10% of the surfactant inhibition of the curing reaction. In the isothermal curing reaction of DSC, the surfactant inhibits the progress of the curing reaction. TGA studies have shown that the addition of surfactants has little effect on the thermal stability of the epoxy resin. DMTA results show that the surfactant plays a role as a plasticizer in the epoxy resin and is mutually compatible with the epoxy resin. The addition of the surfactant decreases the storage modulus of the epoxy resin, and the glass transition temperature Gradually decreases.