通过双螺杆挤出机制备了聚丙烯/二氧化钛纳米复合材料,在材料连续介质力学模型假设基础上,建立了复合材料的有限元模型,求解发现:低应变下,二维平面模型较三维体积元模型能够更好地拟合实际材料的应力应变曲线:当无机纳米粒子较少时,单个粒子的微区应力场受其它粒子影响不大,微区应力场重叠或交叉现象不明显;而在不同载荷作用下,无机粒子与聚丙烯相互作用区域应力首先达到最大,当达到某一临界值时,界面层脱粘.
参考文献
| [1] | Paul, DR;Robeson, LM .Polymer nanotechnology: Nanocomposites[J].Polymer,2008(15):3187-3204. |
| [2] | Hou ZC;Wang K;Zhao P;Zhang Q;Yang CY;Chen DQ;Du RN;Fu Q .Structural orientation and tensile behavior in the extrusion-stretched sheets of polyp ropylene/multi-walled carbon nanotubes' composite[J].Polymer: The International Journal for the Science and Technology of Polymers,2008(16):3582-3589. |
| [3] | Kemal, I;Whittle, A;Burford, R;Vodenitcharova, T;Hoffman, M .Toughening of unmodified polyvinylchloride through the addition of nanoparticulate calcium carbonate[J].Polymer: The International Journal for the Science and Technology of Polymers,2009(16):4066-4079. |
| [4] | Dong, Y;Bhattacharyya, D .Mapping the real micro/nanostructures for the prediction of elastic moduli of polypropylene/clay nanocomposites[J].Polymer: The International Journal for the Science and Technology of Polymers,2010(3):816-824. |
| [5] | Kim GM.;Michler GH. .Micromechanical deformation processes in toughened and particle-filled semicrystalline polymers: Part 1. Characterization of deformation processes in dependence on phase morphology[J].Polymer: The International Journal for the Science and Technology of Polymers,1998(23):5689-5697. |
| [6] | Jerabek, M;Major, Z;Renner, K;Moczo, J;Pukanszky, B;Lang, RW .Filler/matrix-debonding and micro-mechanisms of deformation in particulate filled polypropylene composites under tension[J].Polymer: The International Journal for the Science and Technology of Polymers,2010(9):2040-2048. |
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%