制备了新型的有机黏土/聚醚砜/环氧树脂纳米复合材料并对其微结构和增韧机理进行了研究.此纳米材料由半互穿网络结构的聚醚砜/环氧树脂基体和有序剥离形态的有机黏土组成.由于有机黏土和聚醚砜的加入大幅增加了环氧树脂的断裂韧性,并且出现了双增韧剂的协同增韧效应.增韧机理包括两个部分:一方面聚醚砜的加入形成了半互穿网络结构增加了基体的延展性,另一方面有序剥离的黏土形成的微米级黏土富集区域导致了裂纹前端弯曲、裂纹桥接、裂纹偏转、裂纹分叉和基体塑性变形的发生.
参考文献
| [1] | JONGHWI LEE;ALBERT F.YEE .Micro-Mechanical Deformation Mechanisms in the Frature of Hybrid-Particulate Composites Based on Glass Beads, Rubber and Epoxies[J].Polymer engineering and science,2000(12):2457-2470. |
| [2] | FROHLIRCH J;THOMANN R;GRYSHCHUK O et al.High performance epoxy hybrid nanocomposites containing organophilic layered silicates and compatibilized liquid rubber[J].Journal of Applied Polymer Science,2004,92:3088-3096. |
| [3] | CLIVE B BUCKNALL;IVANA K PARTIDGE .Phase separa tion in epoxy resins containing polyethersulphone[J].Polymer,1983,24:639-644. |
| [4] | Andres MA.;Valea A.;Eceiza A.;Mondragon I.;Garmendia I. .Fracture toughness of epoxy resins modified with polyethersulfone: Influence of stoichiometry on the morphology of the mixtures[J].Journal of Applied Polymer Science,1998(1):183-191. |
| [5] | BEJOY FRANCIS;SABU THOMAS;G VISWANATHAN ASARI et al.Synthesis of hydroxyl-terminated poly(ether ether ketone) with pendent tert-butyl groups and its use as a toughner for epoxy resins[J].Journal of Polymer Science Part B: Polymer Physics,2006,44:541-556. |
| [6] | CLIVE B BUCKNALL;ADRIAN H GILBERT .Toughening tetrafunctional epoxy resins using polyetherimide[J].Polymer,1989,30:213-217. |
| [7] | Rastegar S;Mohammadi N;Bagheri R .Development of co-continuous morphology in epoxy poly(methyl methacrylate) (PMMA) blends cured by mixtures of phase-separating and non-phase-separating curing agents[J].Colloid and polymer science,2004(2):145-153. |
| [8] | LIU Weiping;SUONG V HOA;MARTIN PUGH .Organoclaymodified high performance epoxy nanocompositcs[J].Computer Science and Technology,2005,65:307-316. |
| [9] | D.Ratna;O.Becker;G.P.Simon;R.J.Varley .Nanocomposites based on a combination of epoxy resin,hyperbranched epoxy and a layered silicate[J].Polymer: The International Journal for the Science and Technology of Polymers,2003(24):7449-7457. |
| [10] | Kishi H.;Huang J.;Yee AF.;Shi YB. .SHEAR DUCTILITY AND TOUGHENABILITY STUDY OF HIGHLY CROSS-LINKED EPOXY/POLYETHERSULPHONE[J].Journal of Materials Science,1997(3):761-771. |
| [11] | Mimura K. .Improvement of thermal and mechanical properties by control of morphologies in PES-modified epoxy resins[J].Polymer: The International Journal for the Science and Technology of Polymers,2000(12):4451-4459. |
| [12] | MICHAEL ALEXANDRE;PHILIPPE DUBOIS .Polymer-lay ered silicate nanocomposites:preparation,properties and uses of a new class of materials[J].Materials Science and Engineering,2000,28:1-63. |
| [13] | LANGE FF .The interaction of crack front with a second-phase dispersion[J].Philosophical Magazine,1970,22:983-992. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%