共查询到18条相似文献,搜索用时 78 毫秒
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本文综述了耐热耐湿和加工性优良的双马来酰亚胺(BMI)型先进复合材料(ACM)树脂基体改性的近年发展。着重介绍了BMI通过与烯丙基苯基化合物共聚,与芳香二胺的链延长和合成新型链延长BMI,与热塑性树脂共混等获得增韧的方法及若干树脂体系、牌号和性能,表明BMI的增韧改性对被着重发展为ACM的热固性树脂基体的技术关键性。 相似文献
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纳米Si_3N_4/双马来酰亚胺/氰酸酯树脂复合材料的性能 总被引:1,自引:0,他引:1
双马来酰亚胺树脂预聚体改性的氰酸酯树脂(BMI/CE)具有良好的机械性能和热性能,是一种多功能复合材料树脂基体。本文研究了纳米Si3N4的含量对BMI/CE复合材料力学性能和摩擦学性能的影响,并通过扫描电镜和透射电镜分析了复合材料的增韧机理、磨损机理以及纳米Si3N4在基体中的分散性。结果表明:纳米Si3N4可显著改善复合材料的力学性能和摩擦学性能。当纳米Si3N4含量为3.0wt%时,复合材料的力学性能和摩擦学性能最好。相对于BMI/CE树脂基体,复合材料的冲击强度提高了36.0%,弯曲强度提高了21.8%,摩擦系数降低了25.0%,磨损率降低了77.9%。纳米Si3N4粒子可较好地分散在树脂基体中,起到均匀分散应力的作用,从而增强材料的韧性;BMI/CE树脂为塑性变形和粘着磨损,而纳米Si3N4含量为3.0wt%时复合材料为粘着磨损。 相似文献
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发展中的双马来酰亚胺型先进复合材料基体树脂 总被引:2,自引:0,他引:2
近几年,双马来酰亚胺型先进复合材料基体树脂的研制和应用发展迅速。本文就此介绍了双马来酰亚胺树脂的基本特性及其可用作优良基体树脂的独特地位、改性趋势和品种发展情况,并列表系统简要介绍了近十几年国外已经和正在发展的品种及若干性能,可供发展我国航空航天用先进复合材料事业借鉴和参考。 相似文献
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复合材料在航空、航天、电子等领域的广泛应用对其耐高温性能提出了更高的要求。树脂基复合材料的耐温性主要取决于树脂基体的耐温性。文中综述了几种高性能树脂基体的性能特点及其在耐高温复合材料中的应用现状,总结了已有改性方法和改性效果,分析了高性能树脂基体改性的未来发展方向,并探讨了采用分子设计方法指导高性能树脂基体改性及研发新型高性能树脂基体的可行性。 相似文献
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BMI树脂/蒙脱土纳米复合材料(Ⅱ)——纳米复合材料的制备及表征 总被引:2,自引:0,他引:2
以烯丙基三苯基溴化(AP)作为界面改性剂对钠基蒙脱土进行改性,得到有机蒙脱土(OMMT),然后采用原位聚合方法制备二烯丙基双酚A改性二苯甲烷双马来酰亚胺(BMI)树脂/OMMT纳米复合材料。采用FT-IR、WAXD、TEM、TGA等研究了纳米复合材料的结构和性能。研究表明,AP中的烯丙基官能团能与BMI单体中酰亚胺环上的双键发生反应;当OMMT含量少时得到剥离型纳米复合材料,而当OMMT含量多时得到插层型纳米复合材料;复合材料体系的热性能明显优于基体树脂。 相似文献
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先进树脂基复合材料已经成为一类最重要的航空航天结构材料。主要介绍了国内外先进树脂基复合材料增强纤维、树脂基体、制造技术和结构功能一体化技术的发展,以及先进树脂基复合材料的考核应用状况,并讨论分析了先进树脂基复合材料的发展趋势与面临的机遇和挑战。先进树脂基复合材料发展目前面临的机遇与挑战有:树脂基复合材料继续向高性能化发展;结构功能一体化树脂基复合材料呈现多功能化和尖端化趋势;基于多尺度建模和表征的复合材料设计技术迎来极其重要的发展机遇;多功能化成为未来碳纳米复合材料发展的重要目标;环境友好催生绿色复合材料、热塑性复合材料以及高效循环再利用技术;智能复合材料技术支撑更大、更集成化复合材料整体结构的可靠应用;“互联网”时代复合材料将面临研究方式的深刻变革。 相似文献
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先进树脂基复合材料已经成为一类最重要的航空航天结构材料。主要介绍了国内外先进树脂基复合材料增强纤维、树脂基体、制造技术和结构功能一体化技术的发展,以及先进树脂基复合材料的考核应用状况,并讨论分析了先进树脂基复合材料的发展趋势与面临的机遇和挑战。先进树脂基复合材料发展目前面临的机遇与挑战有:树脂基复合材料继续向高性能化发展;结构功能一体化树脂基复合材料呈现多功能化和尖端化趋势;基于多尺度建模和表征的复合材料设计技术迎来极其重要的发展机遇;多功能化成为未来碳纳米复合材料发展的重要目标;环境友好催生绿色复合材料、热塑性复合材料以及高效循环再利用技术;智能复合材料技术支撑更大、更集成化复合材料整体结构的可靠应用;“互联网”时代复合材料将面临研究方式的深刻变革。 相似文献
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Studies of modified bismaleimide resins Part I The influence of resin composition on thermal and impact properties 总被引:4,自引:0,他引:4
The influence of the components of a modified bismaleimide (BMI) resin on the thermal properties and impact properties of these resins are investigated in this paper. Toughened BMI resin castings incorporating 0%, 5%, 10%, 15%, 20%, 30%, and 40% (by weight) thermoplastic-modified polyetherketone (PEK-C) were prepared. The modified resins were characterized and analysed using dynamic mechanical thermal analysis (DMTA), thermogravimetric (TG) analysis, free beam impact tests, and scanning electron microscope (SEM) techniques. The results indicate that a typical 4,4'-bismaleimidodiphenyl methane (MBMI)/0,0'-diallybisphenol A (DABPA) two-component system modified with 4,4'-bismaleimide diphenyl ether of biphenyl A (MEBMI), Allyl phenol epoxy (AE), and PEK-C has a high glass transition temperature (Tg), excellent thermal stability, and outstanding impact strength. This novel toughened BMI resin is expected to find use in advanced composites. 相似文献
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R.L. King 《Materials & Design》1982,3(4):515-522
The nature and history of composite materials are briefly reviewed and discussed, as are aircraft economics and the reasons for using advanced composites in the aerospace industry. The importance of the manufacturing contribution to the technology of these materials is then outlined.Later parts of this paper will cover moulding, machining and joining of advanced composites, monitoring the cure of resins, the effects of manufacturing processes on composite materials, and non-destructive testing. 相似文献
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Effect of structure on thermal behaviour of phosphorus containing addition polyimides and epoxy resins 总被引:1,自引:0,他引:1
I. K. Varma 《Materials Research Innovations》2001,4(5-6):306-310
Addition polyimides, [e.g. endo-5-norbornene-2.3-dicarboximide(nadimides), maleimides etc.] and epoxy resins have been used
extensively in the past as matrix resins for advanced fiber-reinforced composites. However, inadequate flame resistance and
thermal stability of these resins is one of their serious limitations. Our earlier studies have shown excellent flame resistance
properties of addition polyimides based on bis(3-aminophenyl) methyl phosphine oxide (B) or tris(3-aminophenyl) phosphine
oxide (T). Carbon fiber reinforced composites based on such matrix resin did not burn even in pure oxygen. In order to investigate
the effect of weight percent of phosphorus on thermal behaviour and flame resistance, a series of addition polyimides and
epoxy resins were prepared using B, T and amide-amines. The effect of structure on curing behaviour of resins and thermal
and flame resistance of cured resins was evaluated. The results demonstrate an improvement in char yield of resins containing
higher weight percent of phosphorus.
Received: 6 November 2000 / Reviewed and accepted: 7 November 2000 相似文献
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Characterization and compatibility of high-performance epoxy resins were investigated for on site repair of carbon/bismaleimide aircraft structures. First, processing of three bi-component resins was studied. Then, physical and mechanical characterizations were carried out on carbon fabric/repair resin composite laminates (materials A, B and C) before and after ageing and results are presented. One composite (material A) was chosen, according to industrial specifications, the main criterion being the glass transition temperature. The compatibility of this material with the carbon/BMI structures to be repaired was checked with lap shear tests. Compatibility between the selected repair material and carbon/epoxy composites, whose repair procedure is already known, was conducted and considered as reference point. The obtained results allowed to validate material A for on site step structural repair of the carbon/BMI structures of our industrial partner. 相似文献
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热塑性树脂增韧双马来酰亚胺树脂的研究 总被引:1,自引:1,他引:0
本文讨论了用热塑性(TP)树脂聚砜(PSF)和聚醚砜(PES)增韧双马来酰亚胺(BMI)树脂的研究.实验表明,增韧后的树脂在150℃的粘度小于0.5(Pa·S),其复合材料的成形压力为0.3~0.7(MPa),固化温度为180℃,上述特性满足热压罐成形的工艺要求.树脂的预浸料具有较好的粘性和铺叠性,贮存期一个月以上(室温).树脂保持了较好的耐热性能,可在177℃长期使用.其复合材料的冲击强度明显提高,经聚砜增韧后提高了90%.PSF的增韧效果比PES明显.研究表明,只有当TP树脂含量不低于15%时,方可获得较明显的增韧效果.TP树脂是以球形颗粒分散于BMI基体中,这些颗粒起到了抑止微裂纹扩展的作用. 相似文献
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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SiO2(SiO2-NH2)为原料,通过溶剂法制备出结构中含有SiO2的苯并噁嗪树脂单体(SiO2-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SiO2-BOZ/BMI树脂材料,并详细研究了SiO2-NH2的添加对BMI固化反应动力学的影响。结果表明,当SiO2-BOZ添加量达到15.0wt%时,SiO2-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,SiO2-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。 相似文献