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室温固化耐温150℃环氧胶粘剂

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研究报告及专论 2008年72月 。 epoxy resin.Effects of a liquid rubber inclusion[J].Poly— mer,2007,48(6):169—171. >一 [2]Jie Kong,Yu sheng Tang,Xing jun Zhang,et a1.Synergic sphenol a on toughness 一 l}且j effect of acrylate liquid rubber and biof epoxy resins[J].Polymer Bulletin,2008,60(2—3):229 \/\一d9 —236. H 这样,酸酐与环氧基交替反应进行加成聚合。 [3 1 Kaynak C,Ozturk A,Tincer T.Flexibility improvement of epoxy resin by liquid urbber modiifcation[J].Polymer inter— national,2002,51(9):749—756. 4结论 [4]Kim W G,Lee J Y,Park K Y.Curing reaction ofo—cresol no- 采用等温DSC法对六氢苯酐用量进行分析研 vola epoxy resin according to hardener charge[J].J Polym 究,确定了HHPA/EP体系中六氢苯酐的最佳用量。 Sw A:Polym Chem,1993,31:633—639. 结合凝胶化实验、动态DSC法和红外跟踪实验法,并 [5]Ishida H,Rodriguez Y.Curing kinetics of a new Benzoxazine— 借助T—B图外推法,确定了HHPA/EP固化体系的最 based phenolic resin by differential scanning calorimetyr[J]. 佳固化工艺为:100℃/1h+120 ̄C/2h+150 oC/4h, Polymer,1995,36(16):3151—3158. 然后在190 oC下后处理3 h。在使用促进剂时,六氢 [6]Chanchira Jubsilp,Siriporn Damrongsakkul,Tsutomu Takei- 苯酐/环氧树脂固化体系中的环氧基和酸酐的羧酸 chi,et a1.Curing kinetics of arylamine-based polyfunctional benzoxazine resins by dynamic differential scanning calorim- 阴离子交替加成聚合,同时还有环氧基与反应中生 成的羟基的并行反应,从而形成环氧树脂网络体系。 etyr[J].Thermochimica Acta,2006,447:131—140. [7]孙曼灵,等.环氧树脂应用原理与技术[M].北京:机械 工业出版社,2002.16,142,164—167. 参考文献 [8]罗森诺M w,齐欣.传热学基础手册[M].北京:科学出 [1]Thomas R,Durix s,Sinturel C,Omonov T,et 1a.Cure kinet・ 版社.1992.187—190. ics,morphology and miscibility of modiifed DGEBA—based Study of curing process of hexahydrophthalic anhydride/epoxy resin system WANG Ming—ming (The Navy Military-affairs Representation Chamber Residing in Xing Ping,Xingping,Shanxi 713107,China) Abstract:The hexahydrophthalic anhydride/ep0xy resin(HHPA/EP)system,which consists of bisphenol—A epoxy resin as the matirx,HHPA as the curing agent and MZ一3 1 as the curing accelerator,was systematically investigated in the paper.On the basis of gelling tests,dymamic DSC,infrared spectrum tracking experiments and extrapolation in T— B figue,the optimal curing conditions of HHPA/EP system were obtained and they are taht the mixture is cured in vacum oven at 100℃f0r l h,at 120℃for 2 h and at 150℃for4 h in turn,then its post-curing treatment is con— ducted at 190℃for 3 h. Key words:epoxy resin;hexahydrophthalic anhydride;dynamic DSC;infrared spectrum tracking ......... .......◆..◆.夸......◆:. ...... ......◆◆.夸 ....◆........:.夸 夺....:. ... .◆.夸...... ............ 室温固化耐温150 oC环氧胶粘剂 西北工业大学理学院应用化学系以高活性四官能度缩水甘油胺环氧树脂(JEh-012)、耐高温固化剂苯甲酮四酸二酐(BT- DA)、顺丁烯二酸酐(MA)、促进剂2一乙基4一甲级咪唑、填充剂为碳纤维等,制得了室温固化耐热150℃的环氧树脂胶粘剂。具 有良好的粘接性能,可用于耐热材料的结构粘接。由于室温固化时间很长,一般在实验条件下可将60 cC作为室温固化的温度。 所研制的环氧胶粘荆,60℃/2 h已基本固化完全。实验结果表明,当n 氧基目:n酸 基目=l:I、促进剂为1%(占环氧树脂的质量 分数、碳纤维为填料时,环氧胶粘剂的性能最佳。实际测得的45 钢粘接拉伸剪切强度为13.9 MPa(室温);10.6 MPa(150 ℃)。而以KH.550偶联剂处理的石英粉为填料时,剪切强度为10.1MPa(室温);8.4 MPa(150 oC),若无填料的粘接剪切强度 室温仅为2.6 MPa;150 oC时0.47 MPa。 (李子东摘编) 粘接Adhesion in China 7 

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