以聚氯乙烯（PVC）为基体,采用熔融共混法制备了PVC/氯化聚乙烯（CPE）合金和PVC/CPE（12 phr）/碳酸钙（CaCO3）三元复合材料,考察了CaCO3表面改性及改性剂含量对复合材料拉伸与冲击力学性能的影响。结果表明,填充CaCO3会降低复合材料拉伸屈服强度与冲击韧性。对微米CaCO3进行表面改性,可有效限制复合材料韧性的降低。在表面改性微米CaCO3填充量为48wt%、CPE含量为12 phr时,复合材料屈服强度约33 MPa,冲击强度为硬质PVC的4.7~5.0倍。
Polyvinyl chloride（PVC）/chlorinated polyethylene（CPE）/calcium carbonate（CaCO3） ternary composites with PVC as the matrix,CPE as a toughness modifier and CaCO3 as a filler were prepared by using melt compounding method.Influences of surface modification and CaCO3 content on mechanical properties of the ternary composites were discussed.The results showed that both tensile yield strength and impact toughness of the composites decrease with increasing CaCO3 content.However,surface modification of micro-sized CaCO3 allowed the prepared composites to have a higher impact toughness than those with unmodified CaCO3.The composites modified with 48 wt% micro-sized CaCO3 and 12 phr CPE exhibited yield stress of about 33 MPa and impact strength 4.7~5.0 times higher than that of rigid PVC.
参考文献
| [1] | Wan CY.;Zhang Y.;Zhang YX.;Qiao XY.;Teng GM. .Morphology and fracture behavior of toughening-modified poly(vinyl chloride)/organophilic montmorillonite composites[J].Journal of Polymer Science, Part B. Polymer Physics,2004(2):286-295. |
| [2] | 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. |
| [3] | Zhou LL.;Wang X.;Lin YS.;Yang JY.;Wu QY. .Comparison of the toughening mechanisms of poly(vinyl chloride)/chlorinated polyethylene and poly(vinyl chloride)/acrylonitrile-butadiene-styrene copolymer blends[J].Journal of Applied Polymer Science,2003(4):916-924. |
| [4] | Javadi A;Mohammadi N;Garmabi H;Pourrahimi AM;Mashayekhi J .Influence of Impact Load-Temperature Conformity on Toughening of Poly(vinyl chloride) by Core-Shell Rubber Particles[J].Journal of Applied Polymer Science,2009(6):2691-2696. |
| [5] | Wu DZ.;Wang XD.;Song YZ.;Jin RG. .Nanocomposites of poly(vinyl chloride) and nanometric calcium carbonate particles: Effects of chlorinated polyethylene on mechanical properties, morphology, and rheology[J].Journal of Applied Polymer Science,2004(4):2714-2723. |
| [6] | Zeng XF;Wang WY;Wang GQ;Chen JF .Influence of the diameter of CaCO3 particles on the mechanical and rheological properties of PVC composites[J].Journal of Materials Science,2008(10):3505-3509. |
| [7] | Z. Bartczak;A. S. Argon;R. E. Cohen;M. Weinberg .Toughness mechanism in semi-crystalline polymer blends: II. High-density polyethylene toughened with calcium carbonate filler particles[J].Polymer: The International Journal for the Science and Technology of Polymers,1999(9):2347-2365. |
| [8] | Y.S. Thio;A.S. Argon;R.E. Cohen;M. Weinberg .Toughening of isotactic polypropylene with CaCO_3 particles[J].Polymer: The International Journal for the Science and Technology of Polymers,2002(13):3661-3674. |
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