SiO_(2)-苯并噁嗪/双马来酰亚胺树脂的固化反应动力学  

Curing reaction kinetics on SiO_(2) contained benzoxazine/bismaleimide composites system

作　　者：贾园[1] 杨菊香[1] 曾莎 刘振[1] JIA Yuan;YANG Juxiang;ZENG Sha;LIU Zhen(The Key Laboratory for Surface Engineering and Remanufacturing in Shanxi Province,College of Chemical Engineering,Xi’an University,Xi’an 710065,China)

机构地区：[1]西安文理学院化学工程学院陕西省表面工程与再制造重点实验室,西安710065

出　　处：《复合材料学报》2021年第2期536-544,共9页Acta Materiae Compositae Sinica

基　　金：西安市科技计划项目(2020KJWL18);国家级大学生创新创业项目(201911080012)。

摘　　要：为改善双马来酰亚胺树脂(BMI)脆性过大、耐热性不足的缺点,以末端含有氨基的纳米SiO_(2)(SiO_(2)-NH_(2))为原料,通过溶剂法制备出结构中含有SiO_(2)的苯并噁嗪树脂单体(SiO_(2)-BOZ),作为改性体系加入到BMI中进行共混,制备出一种耐热性能、韧性良好的新型SiO_(2)-BOZ/BMI树脂材料,并详细研究了SiO_(2)-NH_(2)的添加对BMI固化反应动力学的影响。结果表明,当SiO_(2)-BOZ添加量达到15.0wt%时,SiO_(2)-BOZ/BMI树脂复合材料的表观活化能较纯BMI树脂得到了一定程度的降低,SiO_(2)-BOZ/BMI的弯曲强度达到最大值166.12 MPa,较纯BMI增加了32.3%,且具有比BMI更好的耐热性能。To overcome the excessive brittleness and lower thermal resistant of bismaleimide resins, the silicon dioxide with amino terminal groups(SiO_(2)-NH_(2)) was chosen as raw materials to prepare benzoxazine monomer containing SiO_(2)(SiO_(2)-BOZ). The SiO_(2)-BOZ was then used as the modified system to modify bismaleimide(BMI), aiming to obtain a kind of new SiO_(2)-BOZ/BMI composites with better processability and heat-resistant properties,while the influence of addition of SiO_(2)-BOZ on curing reaction kinetics of BMI was also studied. The results show that when the content of SiO_(2)-BOZ reaches 15.0 wt%, the apparent activation energy of SiO_(2)-BOZ/BMI resin is reduced to a certain extent compared with that of pure BMI resin, and the bending strength of SiO_(2)-BOZ/BMI reaches a maximum of 166.12 MPa, which is 32.3% higher than that of pure BMI, the SiO_(2)-BOZ/BMI also possesses better heat resistance than that of BMI.

关 键 词：双马来酰亚胺树脂 苯并噁嗪 固化反应动力学 力学性能 耐热性能 

分 类 号：O631[理学—高分子化学] TQ320.1[理学—化学]