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Synthesis and curing behavior of novel multifunctional hybrid oligomers

机译：新型多功能杂化低聚物的合成与固化行为

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Novel multifunctional hybrid vinylized epoxide oligomers (MVEOs) containing two different reactive groups were synthesized through the esterification of tetraglycidyl 4,4-diaminodiphenylmethane (TGDDM) with acrylic acid (AA) at various molar ratios. The changes of vinyl ester and epoxy groups in MVEOs were studied by Fourier Transform Infrared Spectroscopy, Nuclear Magnetic Resonance, and Gel permeation chromatograph. It was found that more amount of AA in the reactant would increase the contents of vinyl ester and molecular weight. The curing behavior of MVEOs has been studied by scanning differential scanning calorimetry (DSC). Two distinct exothermic peaks were observed in the MVEOs which can be attributed to the radical polymerization of vinyl ester/styrene and condensation polymerization of epoxy/MeTHPA, respectively. Two different kinds of curing programs have influenced each other which makes the exothermic peaks overlapped. The DSC scan of MVEO-2 indicated that the radical initiated curing reaction of vinyl ester won't notably affect the curing of epoxy without MeTHPA. However, the thermal curing of vinyl ester in MVEO-2 without MEKP/Co would be occurred with the temperature rising. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42276.
机译：通过将四缩水甘油基4,4-二氨基二苯甲烷（TGDDM）与丙烯酸（AA）在各种摩尔比下进行酯化反应，合成了包含两个不同反应基团的新型多功能杂化乙烯基化环氧低聚物（MVEO）。通过傅里叶变换红外光谱，核磁共振和凝胶渗透色谱法研究了MVEO中乙烯基酯和环氧基的变化。已经发现，反应物中更多量的AA将增加乙烯基酯的含量和分子量。 MVEO的固化行为已经通过扫描差示扫描量热法（DSC）进行了研究。在MVEO中观察到两个不同的放热峰，分别可归因于乙烯基酯/苯乙烯的自由基聚合和环氧/ MeTHPA的缩聚。两种不同的固化程序相互影响，使放热峰重叠。 MVEO-2的DSC扫描表明，乙烯基酯的自由基引发的固化反应不会显着影响没有MeTHPA的环氧树脂的固化。然而，随着温度的升高，乙烯基酯在没有MEKP / Co的MVEO-2中会发生热固化。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42276。

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