聚丙二醇二缩水甘油醚对E51树脂力学性能的研究
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摘要
利用聚丙二醇二缩水甘油醚增韧改性剂与E51共混制备改性树脂,研究聚丙二醇二缩水甘油醚增韧改性剂填量对复合材料常温力学性能及低温力学性能的影响。结果表明,当增韧改性剂填量为20%(质量分数)时,改性树脂的性能最优。在常温下拉伸断裂应变达到了7.5%,与改性前相比提高了82.9%,改性树脂浇注体的常温拉伸强度为93.3MPa,与改性前相比提高了25.2%,压缩强度为129.8 MPa,弯曲强度为116.60 MPa。在低温下改性树脂浇注体的拉伸断裂应变为5.4%,与改性前相比提高了50%,改性树脂浇注体低温拉伸强度为130.4 MPa,低温压缩强度为174.6 MPa,低温弯曲强度为154.9 MPa。
The modified resin were synthesized by PPGDGE and E51 epoxy resin.The mechanical properties of normal temperature and low temperature were investigated by additive amount of PPGDGE.The results show that the best mass fraction of PPGDGE is 20 wt%,at room temperature,the tensile fracture strain of the material reached 7.5%,which is 82.9% higher than that before the modification,the tensile strength of the material is 93.3 MPa,the compression strength is 129.8 MPa,the bending strength is 116.60 MPa.At low temperature,tensile fracture strain of the material reached 5.4%,which is 50% higher than that before the modification,the tensile strength of the material is 130.4 MPa,compression strength is 174.6 MPa,bending strength is 154.9 MPa.
The modified resin were synthesized by PPGDGE and E51 epoxy resin.The mechanical properties of normal temperature and low temperature were investigated by additive amount of PPGDGE.The results show that the best mass fraction of PPGDGE is 20 wt%,at room temperature,the tensile fracture strain of the material reached 7.5%,which is 82.9% higher than that before the modification,the tensile strength of the material is 93.3 MPa,the compression strength is 129.8 MPa,the bending strength is 116.60 MPa.At low temperature,tensile fracture strain of the material reached 5.4%,which is 50% higher than that before the modification,the tensile strength of the material is 130.4 MPa,compression strength is 174.6 MPa,bending strength is 154.9 MPa.
引文
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[4]Li R,Zhang H,Zhou C,et al.The thermal stability investigation of microencapsulated ammonium polyphosphate/siloxane-modified epoxy resin composites[J].Journal of Applied Polymer Science,2017,134(36):45272-45275.
[5]Peng Guirong,Wei Fei,Chen Jie,et al.Toughening and shape memory properties of EP[J].New Chemical Materials,2012,40(9):75-77(in Chinese).彭桂荣,韦菲,陈杰.环氧树脂的增韧与形状记忆性能研究[J].化工新型材料,2012,40(9):75-77.
[6]Zhang Z,Zhang W,Li D,et al.Mechanical and anticorrosive properties of graphene/epoxy resin composites coating prepared by in-situ method[J].International Journal of Molecular Science,2015,16(1):2239-2251.
[7]Shukla M J,Kumar D S,Mahato K K,et al.A comparative study of the mechanical performance of glass and glass/carbon hybrid polymer composites at different temperature environments[C].IOP Conference Series:Materials Science and Engineering.IOP Publishing,2015,75(1):012002.
[8]Zhao Ying,Huang Jiuzhong.The test success of liquid oxygen tank for new composite[J].Missiles and Space Technology,2001,06:17(in Chinese).赵颖,黄久忠.新型复合材料液氧贮箱试验成功[J].导弹与航天运载技术,2001,06:17.
[9]Sawa F,Nishijima S,Okada T.Molecular design of an epoxy for cryogenic temperatures[J].Cryogenics,1995,35(11):767-769.
[10]Guo Q,Wang K,Chen L,et al.Phase behavior,crystallization,and nanostructures in thermoset blends of epoxy resin and amphiphilic star-shaped block copolymers[J].Journal of Polymer Science Part B:Polymer Physics,2006,44(6):975-985.
[11]Jovan Mijovic,Shen Mingzhao,Jo Wing Sy,et al.Dynamics and morpHology in nanostructured thermoset network/block copolymer blends during network formation[J].Macromolecules,2000,33(14):5235-5244.
[12]Larranaga M,Martin M D,Gabilondo N,et al.Cure kinetics of epoxy systems modified with block copolymers[J].Polymer International,2004,53(10):1495-1502.
[13]Wei K,Tang Y,Niu L.Shape-memory effects of a hydro-epoxy resin system[J].Journal of Polymer Research,2013,20(5):1-7.
[14]Lee C W,Rhee H W,Gong M S.Humidity sensor using epoxy resin containing quaternary ammonium salts[J].Sensors&Actuators B Chemical,2001,73(2-3):124-129.