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| 笼型倍半硅氧烷增韧环氧树脂的机理研究 | |
| 引用本文： | 张增平,梁国正,方长青,裴建中.笼型倍半硅氧烷增韧环氧树脂的机理研究[J].绝缘材料,2012,45(3):40-42,46. |
| 作者姓名： | 张增平 梁国正 方长青 裴建中 |
| 作者单位： | 1. 长安大学教育部特殊地区公路工程重点实验室,西安,710064 2. 苏州大学材料与化学化工学部,苏州,215021 3. 西安理工大学印刷包装工程学院,西安,710048 |
| 基金项目： | 中国博士后科学基金一等资助，中国博士后科学基金特别资助，长安大学基础研究支持计划 |
| 摘 要： | 为提高环氧树脂的韧性,采用氨基笼型倍半硅氧烷(POSS-NH2)改性环氧树脂。分别添加不同质量百分含量的POSS(5%、10%、20%和30%)到双酚A型环氧树脂中,经反应得到一系列杂化树脂;然后采用4,4’-二氨基二苯砜(DDS)作为固化剂固化得到含POSS的有机无机杂化材料。通过对杂化材料的冲击强度、弯曲强度进行研究,并采用SEM进行机理分析。结果表明:随着POSS含量的增加,冲击强度和弯曲强度呈先增大后下降的趋势,当POSS含量为10%时,冲击强度和弯曲强度达到最大值。SEM分析表明"裂纹钉锚"和"裂纹诱导"两种增韧机理同时存在。 |
| 关 键 词： | 环氧树脂 笼型倍半硅氧烷(POSS) 杂化材料 增韧机理 |
Mechanism of POSS Toughened Epoxy Resin |
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| Zhang Zengping , Liang Guozheng , Fang Changqing , Pei Jianzhong.Mechanism of POSS Toughened Epoxy Resin[J].Insulating Materials,2012,45(3):40-42,46. | |
| Authors: | Zhang Zengping Liang Guozheng Fang Changqing Pei Jianzhong |
| Affiliation: | 1(1.Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang’an University,Xi’an 710064,China;2.College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215021,China;3.Faculty of Printing and Packaging Engineering,Xi’an University of Technology,Xi’an 710048,China) |
| Abstract: | Amino functionalized polyhedral oligomeric silsesquioxane(POSS) was used to modify the epoxy resin and improve its toughness.A series of hybrid resins were prepared through adding different POSS contents(5%,10%,20% and 30%) to epoxy resin,then the organic-inorganic hybrid materials were obtained using 4,4-diamino diphenyl sulfone(DDS) as curing agent.The impact strength and flexural strength of the materials were mainly studied,and the toughening mechanism was analyzed by SEM.The results show that with the increase of POSS content,the impact strength and flexural strength increase at first and then drop.When the POSS content is 10wt%,the impact strength and flexural strength both attain maximum.SEM results show that two toughening mechanisms of"crack-pinning"and"crack-inducing"coexist. |
| Keywords: | epoxy resin polyhedral oligomeric silsesquioxane(POSS) hybrid material toughening mechanism |
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