| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Effect of Morphology and Structure of Polycarbonate/Polybutylene Terephthalate Blends on the Properties of Microstructure Injection Molded Products |
| LYU Wenqiang, XIN Yong
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| College of Mechanical and Electrical Engineering, Nanchang University, Nanchang 330031, China |
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Abstract In order to obtain microstructure injection products with better comprehensive properties, polycarbonate (PC)/polybutylene terephthalate (PBT) blends were prepared by melt blending method. And a microstructure injection product was made by using PC/PBT blends as raw materials.The influence of the morphology of PC/PBT blends on the properties of microstructural products was studied. The results show that with the increase of PBT content, the notch impact strength of injection molding products is significantly increased, and the tensile strength shows a decreasing trend. When the PBT content reaches 30wt%, the comprehensive mechanical properties of injection molding products reach the best. Rheological behavior and crystallization behavior of microstructure products were studied by rheometer and DSC. With the increase of PBT content, the flexible chain of the blend system becomes more and more, and the processing fluidity is significantly improved, which is more conducive to the processing of microstructure products. When the PBT content reaches 30wt%, the microstructure products both exhib-it good rheological properties and mechanical properties. DSC test results show that the presence of a small amount of PC can promote the crystallization of the blend system.
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Published: 26 April 2020
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| Fund:This work was financially supported by the National Natural Science Foundation of China (51365038), Jiangxi University Science and technology implementation project (KJLD12058). |
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Corresponding Authors:
Yong Xin, a second-level professor, a doctoral tutor, and a doctor of engineering (post), enjoys special allowances from the State Council, and is mainly engaged in the precision molding technology of polymer micro-nano structures. He has completed more than 30 national science and technology fund and more than 30 provincial (ministerial) key science and technology projects, and has won 5 provincial and ministerial scientific and technological progress awards and more than 200 academic papers.
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| About author:: Wenqiang Lyu,graduate student of the School of Mechanical and Electrical Engineering of Nanchang University, majoring in polymer microstructure injection molding technology. |
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2020, Vol. 34 
