超支化环氧树脂增韧增强苯并噁嗪树脂

doi:10.11901/1005.3093.2016.172

材料研究学报

2017, Vol. 31

Issue (2): 145-151 DOI: 10.11901/1005.3093.2016.172

本期目录 | 过刊浏览

超支化环氧树脂增韧增强苯并噁嗪树脂

靳奇峰^1,²(

),姜冬月²,佟丽娜²,谭荔元²

1 湖南工业大学包装新材料与技术重点实验室株洲 412007
2 辽宁师范大学化学化工学院大连 116029

Simultaneously Toughening and Reinforcing Modification of Benzoxazineresin with Hyperbranched Epoxy

Qifeng JIN^1,²(

),Dongyue JIANG²,Lina TONG²,Liyuan TAN²

1 Key Laboratory of New Materials and Technology for Packaging, Hunan University of Technology, Zhuzhou 412007, China
2 School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China

引用本文:

靳奇峰,姜冬月,佟丽娜,谭荔元. 超支化环氧树脂增韧增强苯并噁嗪树脂[J]. 材料研究学报, 2017, 31(2): 145-151.
Qifeng JIN, Dongyue JIANG, Lina TONG, Liyuan TAN. Simultaneously Toughening and Reinforcing Modification of Benzoxazineresin with Hyperbranched Epoxy[J]. Chinese Journal of Materials Research, 2017, 31(2): 145-151.

全文: PDF(2768 KB) HTML

摘要:

将芳香二元胺型苯并噁嗪(DDM)与全脂肪链超支化环氧树脂(AHEP)按照不同配比进行共混固化,制备出完全相容的DDM/AHEP共混固化物。用傅里叶变换红外光谱和差示扫描量热仪研究了共固化体系的固化物结构特征及其固化反应行为。使用动态热机械性能分析仪表征了共固化体系固化物的热机械性能,结果表明,共混固化物的冲击强度和弯曲模量协同增韧增强。当AHEP添加量为5%(质量分数)时DDM/AHEP固化物的弯曲模量比纯苯并噁嗪树脂提高了11.5%,冲击强度则提高了167%。共混固化物的断面形貌,呈现出原位增韧增强的特征。

关键词 ：有机高分子材料, 超支化环氧树脂, 苯并噁嗪树脂, 固化反应, 改性

Abstract：

Fullycompatibleblend cured resins DDM/AHEP were prepared by incorporating different among of aliphaticand epoxide-functional hyperbranched polymer (AHEP) into an aromatic-diamine typebenzoxazine(DDM) network without cure-induced phase separation. Then their structure and thermo-mechanical property were investigated by means of FTIR,DSC and DMA. The results show that the Young's modulus and impact toughness of DDM could be simultaneously enhanced by the incorporating AHEP.Flexural strength and impact strength of the cured DDM/AHEP blend approach a maximum for5% incorporationof AHEP, representing an increase of over 11.5% and 167% respectively in comparison to that of the original DDM. The fracture surface morphology of the cured blend has the characteristic of in-situ toughness enhancement.

Key words： organic polymer materials hyperbranched epoxy polybenzoxazine curing reaction modification

收稿日期: 2016-03-31

基金资助:辽宁省博士启动基金(20111066)

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图1 DDM、PDDM及DDM/AHEP-10共固化产物的红外光谱图

图2 DDM 与AHEP共聚反应的示意图

图3 DDM与DDM/AHEP-10共混物的DSC曲线

表1 DDM与DDM/AHEP-10共混物的△E、 A以及n

表2 DDM/AHEP共混体系的反应热焓和固化度

表3 DDM/AHEP共固化体系固化物的交联密度

图4 DDM/AHEP共固化产物中AHEP含量与tanδ的关系

图5 DDM/AHEP共固化产物的弯曲强度与AHEP含量的关系

图6 DDM/AHEP共固化产物的弯曲模量与AHEP含量的关系

图7 DDM/AHEP共固化产物的冲击强度与AHEP含量的关系

图8 DDM固化物和DDM/AHEP-10共固化产物的冲击试样的断裂表面SEM照片

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