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    氢化双酚A型环氧树脂的固化动力学

    Curing Kenetics of the Hydrogenated Bisphenol A Epoxy Resin

    • 摘要: 将氢化双酚A与环氧氯丙烷反应合成了氢化双酚A型环氧树脂(HBPA-EP),产物分别用多元胺类或酸酐类固化剂固化,利用差示扫描量热分析(DSC)对固化反应特性进行了研究,得到了相应的固化条件、固化反应活化能和固化反应动力学方程等。结果表明,当分别采用1,3-环己二甲胺、液态聚酰胺、顺式六氢苯酐、甲基六氢苯酐固化HBPA-EP(环氧值为0.45)时,其固化条件分别为100 ℃、2 h, 145 ℃、4 h, 90 ℃、2 h, 120 ℃、4 h,130 ℃、2 h, 150 ℃、4 h,140 ℃、2 h和160 ℃、4 h,用这4种固化剂进行固化反应的表观活化能分别为50.62、56.88、74.56 kJ/mol和68.36 kJ/mol,其反应级数分别为0.886、0.901、0.915和0.905。

       

      Abstract: The hydrogenated bisphenol A epoxy resin (HBPA-EP) with an epoxy value of 0.45 was prepared by the reaction of hydrogenated bisphenol A and epichlorohydrin, and was cured with polyamines or anhydrides. The curing properties of the HBPA-EP with different hardeners were investigated by DSC, and the curing conditions, apparent activation energies, as well as the reaction kinetic equations were determined. As the result for the hardeners 1,3-cyclohexanedimethanamine, liquid polyamide, cis-hexahydrophthalic anhydride or methyl hexahydrophthalic anhydride, the curing condition was 100 ℃、2 h, 145 ℃、4 h, 90 ℃、2 h, 120 ℃、4 h, 130 ℃、2 h, 150 ℃、4 h, 140 ℃、2 h and 160 ℃、4 h, respectively. The apparent activation energy of curing reaction with the four hardeners was 50.62, 56.88, 74.56, 68.36 kJ/mol, respectively and the reaction order of the four hardeners was 0.886, 0.901, 0.915, 0.905, respectively.

       

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