研究了热塑性树脂聚醚砜(PES)对环氧树脂在液氮温度(LNT)下的断裂韧度、冲击韧性及其他力学性能的影响.结果表明:当PES质量分数大于23%时,PES在环氧树脂中形成连续相或半连续相结构,能有效阻止裂纹扩展,使树脂KIC在室温和液氮温度下分别增加247%和77%.在室温下,PES不能使环氧树脂冲击性能提高,但液氮温度下可使冲击韧性增加59%.液氮温度下,环氧树脂的弯曲、压缩和拉伸性能随PES质量分数增加而降低,但相对而言,弯曲和压缩性能受PES的影响较少,而拉伸性能受PES的影响较大.
参考文献
| [1] | Yoon T H;Mcgrath J E .Curing and toughening of a styrene-modified epoxy resin[J].Journal of Applied Polymer Science,2001,80:1504-1513. |
| [2] | Grimsley B W;Cano R J;Johnston N J.Hybrid composites for LH2 fuel tank structure[A].,2001:1597-1606. |
| [3] | Oyanguren P A;Aizpurua B;Galante M I et al.Design of the ultimate behavior of tetrafunction epoxies modified with polysulfone by controlling microstructure development[J].Journal of Polymer Science Part B:Polymer Physics,1999,37:2711-2725. |
| [4] | Blanco I.;Cicala G.;Lo Faro C.;Recca A. .Development of a toughened DGEBS/DDS system toward improved thermal and mechanical properties by the addition of a tetrafunctional epoxy resin and a novel thermoplastic[J].Journal of Applied Polymer Science,2003(1):268-273. |
| [5] | MacKinnon A J;Jenkins S D;McGrail P T et al.A dielectric,mechanical,rheological,and electron microscopy study of cure and properties of a themoplastic-modified epoxy resin[J].Macromolecules,1992,25:3492-3499. |
| [6] | Akay M;Cracknell J G .Epoxy resin-polyethersulphone blends[J].Journal of Applied Polymer Science,1994,52:663-688. |
| [7] | Kinloch A J;Yuen M L .Thermoplastic-toughened epoxy polymers[J].Journal of Materials Science,1994,29:3781-3790. |
| [8] | Callaghan M T .Use of resin composites for cryogenic tankage[J].CRYOGENICS,1991,31:282-287. |
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