资源描述：
《一种耐高温加成固化型酚醛树脂作为复合材料基体的评价.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、复合材料学报第26卷第1期2月2009年ActaMateriaeCompositaeSinicaVol126No11February2009文章编号:1000-3851(2009)01-0013-06一种耐高温加成固化型酚醛树脂作为复合材料基体的评价11,21*1罗振华,杨明,刘峰,赵彤(1.中国科学院化学研究所,北京100080;2.中国科学院研究生院,北京100039)摘要:制备了烯丙基化程度可达173%的烯丙基酚醛树脂(AN173),并与双马来酰亚胺(BMI)以1B1的质量比进行共聚,制备了双马改性的烯丙基酚醛树脂(BMAN173)。研究了该树脂工艺性,确定了其固化制度,考察了
2、该树脂石英布复合材料层合板的耐热性和力学性能。实验结果表明,BMAN173树脂具有良好的工艺性,适合于RTM、模压成型等多种成型工艺。BMAN173树脂固化物表现出良好的耐热性,其储能模量起始下降温度约为390e,起始热分解温度超过430e。与传统酚醛树脂相比,该树脂的复合材料的高温力学性能优异,350e弯曲强度和层间剪切强度保留率分别约为57%和62%;复合材料具有优异的热性能,其储能模量起始下降温度约为410e,玻璃化转变温度超过了450e。BMAN173树脂是耐高温复合材料的理想候选基体树脂。关键词:加成固化;工艺性;耐热性;复合材料;力学性能中图分类号:TB332文献标志码:
3、AEvaluationofahightemperature-resistant,addition-curablephenolicresinasthematrixofcomposites11,21*1LUOZhenhua,YANGMing,LIUFeng,ZHAOTong(1.InstituteofChemistry,theChineseAcademyofSciences,Beijing100080,China;2.GraduateSchooloftheChineseAcademyofSciences,Beijing100039,China)Abstract:Allyl-functio
4、nalnovolac(AN)withallylationdegreeof173%wassynthesized,followedbycopolymerizingwith4,4-bismaleimidebiphenylmethane(BMI)atamassratioof1B1toobtainBMI-modifiedallyl-functionalnovolac(BMAN173)resin.Theprocessingproperty,cureschedule,andthermalstabilityofBMAN173resinwerestudied.TheresultsshowedthatB
5、MAN173resinpossessedexcellentprocessingproperties,whicharesuitableforseveralkindsofmoldingprocesses,suchasresintransfermolding(RTM)andcompressionmolding.TheinitialdecreasetemperatureofstoragemodulusandthermaldecompositiontemperatureofcuredBMAN173resinwereabout390eand430e,indicatingthatBMAN173re
6、sinhadgoodthermalproperties.ThemechanicalandthermalpropertiesofBMAN173resin/silicaweavelaminatecompositesweredetermined.BMAN173resin/silicaweavecompositesexhibitedexcellentmechanicalpropertiesathightemperature,whoseflexuralstrengthandinterlaminarshearstrengthretentionat350ewereabout57%and62%,re
7、spectively.TheresultsofDMAshowedthatBMAN173resin/silicaweavepossessedexcellentheat-resistantproperty.Initialdecreasetemperatureofstoragemodulusofthecompositeswasabout410eanditsglasstransitionwasabove450e.Therefore,BMAN173resinswou
