氢化萜烯酯型环氧树脂固化反应表征与机械性能研究

Study on Curing Reaction and Mechanical Properties of Epoxy Resin from Hydrogenated Terpinene-maleic Anhydride

氢化萜烯酯型环氧树脂(HTME)是以萜烯-马来酸酐加成物的氢化产物与环氧氯丙烷反应合成的环氧树脂。通过DSC热分析、凝胶时间的测定及其影响因素分析,研究了HTME与甲基六氢苯酐(MeHHPA)的固化反应活性;通过FT-IR光谱法定性分析与固化度测定法定量分析,表征了HTME/MeHHPA体系的固化反应行为及完成固化反应的条件;并比较了HTME、TME及环氧树脂6101与Me-HHPA固化产物的机械性能。结果表明,HTME/M eHHPA体系的固化反应属于放热反应,反应热焓为153.5 J/g,峰顶温度为157.9℃;在0.5%BDMA促进剂条件下,110℃经8 h可完全固化,且HTME与MeHHPA按化学计量配比时固化效果最好,固化产物的机械性能与环氧树脂6101固化物的性能相似。

Hydrogenated terpinene-maleic ester type epoxy resin（HTME） is a type of epoxy resin synthesized from hydrogenated terpinene-maleic anhydride. The activity of curing reaction of HTME/methyl hexahydrophthalic anhydride （MeHHPA） system was investigated by means of DSC and gelation time determination. The curing behaviors of HTME/MeHHPA system were studied by qualitative analysis of FT-IR spectrum and quantitative analysis of curing degree determination. The mechanical properties of HTME cured with MeHHPA were compared with those of terpinene-maleic ester type epoxy resin （TME） and epoxy resin 6101 under the same condition. The results show that the reaction between HTME and MeHHPA was an exothermic one with reaction heat of 153.5 J/g and peak temperature at 157.9 ℃, and the HTME/MeHHPA system could be cured completely at 110 ℃ for 8 h with 0.5 % benzyldimethylamine （BDMA） by weight of HTME as aecelerant. The mechanic properties of the three kinds of cured epoxy products were about the same.