期刊
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
卷 48, 期 3, 页码 573-586出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00222340902837741
关键词
injection molding; nanoparticle; polypropylene copolymer (co-PP); shrinkage
资金
- National Natural Science Foundation of China [20734005, 10590351]
- Program for New Century Excellent Talents in University
- Special Funds for Major Basic Research [2005CB623808]
The effect of variation of injection conditions and addition of nano-calcium carbonate (CaCO3), nano-silicon dioxide (SiO2) and full-vulcanized nano-powdered styrene butadiene rubber (PSBR) on the shrinkage of injection-molded polypropylene-ethylene copolymer (90/10, co-PP) were investigated. The results showed that the shrinkage was different for different locations along the flow path. The shrinkage in the length direction of the injection-molded sample varied with the adjustment of the processing parameters, while the shrinkage in the width and thickness direction was almost unchanged. The addition of nano-CaCO3 and PSBR decreased the shrinkage of co-PP, while the shrinkage of co-PP/ SiO2 composite was almost unchanged.
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