Mechanical Property and Crystal Structure of Nylon6 Samples Prepared by Vibration Injection Molding

Zhang, Jie; Y, Lei; Yang, Liangbo; Zhou, Qixiong; Wen, Yaofeng; Shen, Kaizhi; Fu, Qiang

doi:10.1080/03602550802674606

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…With increase in the vibration amplitude, the density of samples reaches the maximum value, later decreases slowly under the same frequency. The density of samples reaches the maximum value from 0.901 g/cm 3 of the steady sample to 0.9037 g/cm 3 of dynamic sample obtained at f ¼ 4 Hz and A ¼ 0.1 mm. The maximum increment of density is 0.3%.…”

Section: Effect Of Vibration Parameters On Density Of the Samplementioning

confidence: 88%

“…Qu 1 and Wang and Qu 2 mainly researched the influence of the electromagnetism vibration on the fill system. Kaizhi Shen and coworkers [3][4][5][6][7][8] had attained fine mechanical properties using the dynamic packing technique. Qiang Fu and coworkers [9][10][11] paid more attention on the morphology and crystallization of polymer prepared with the vibration technique.…”

Section: Introductionmentioning

confidence: 99%

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Effect of vibration parameters in plasticizing process on properties of polypropylene by dynamic injection molding

Wang

Huang

et al. 2013

Journal of Thermoplastic Composite Materials

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A novel self-designed dynamic injection molding machine by screw axial vibration introduced in plasticizing process was used in the preparation of polypropylene (PP) standard specimens. Under other process and same conditions, the vibration frequency and amplitude are changed in plasticizing process. The whole energy consumption in the molding process, the tensile stress, impact stress, density, and differential scanning calorimetric results of the specimens were measured. Furthermore, the effects of vibration parameters of plasticizing process on dispersion were studied with the mixture of PP and nano-calcium carbonate (CaCO 3 ) materials using scanning electron microscopy (SEM). The experimental results showed that the maximum increment of tensile stress and impact stress of the specimens are 9.8and 13.8%, respectively, by screw axial vibration introduced in plasticizing process. The maximum increment of density is 0.3%. The melt point of specimens has a significant increase of 3 C and the energy consumption of the whole processing decreases 6.6% at maximum. The SEM micrographs show that the dispersion of nano-CaCO 3 became more homogeneous compared with the steady specimens.

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Section: Effect Of Vibration Parameters On Density Of the Samplementioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Effect of vibration parameters in plasticizing process on properties of polypropylene by dynamic injection molding

Wang

Huang

et al. 2013

Journal of Thermoplastic Composite Materials

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“…The adding of elastomer such as ethylene-(vinyl acetate) (EVA) is one of the most economical and effective ways to increase the toughness of inorganic particles=PA6 systems [16][17][18][19][20][21][22] . In our previous studies [23][24][25] , we reported that the inorganic particles=elastomer=PA6 ternary composites with special microstructure could greatly improve the toughness of inorganic particles=PA6 system.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mixing Process and Morphologies on the Electrical Conductivity of PA6/EVA/CB Composites

Wang

Xu³

et al. 2011

Polymer-Plastics Technology and Engineering

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Nylon6 (PA6)/Ethylene-(vinyl acetate) (EVA)/carbon black (CB) composites with different electrical conductivity were prepared in an internal mixer. The factors influencing the electrical conductivity of the ternary composites were investigated, including mixing mode, mixing time and mass ratio of PA6 and EVA, and so on. Among three kinds of PA6=EVA=CB composites, including ones prepared by directly mixing (composites A), EVA and CB were mixed prior to melt-compounding with PA6 (composites B) and PA6 and CB were mixed prior to melt-compounding with EVA (composites C), the mixing time only significantly influenced the electrical conductivity of composites A. Good conductivity of the composites could be realized because the distance between CB particles became closer with the increasing of mixing time. However, the mixing time has no effect on the electrical properties of the composites B and the composites C, due to there were no CB particles migrated phenomenon happened. Scanning electron microscopy (SEM) was used to assess the fracture surface morphologies and the dispersion of the CB particles. The results showed that the dispersion of the CB particles significantly affects the electrical conductivity of the composites. Based on the study of the influence of various mass ratios of EVA and PA6 on the morphologies and electrical properties of PA6=EVA composites filled with 10 phr (parts per hundred resins) CB particles, we suggested that the mass ratio of EVA and PA6 affected the volume resistivity of the ternary composites significantly. In addition, the composites were almost insulation when the mass ratios of EVA and PA6 were 80=20 and 70=30, while the composites became conductivity with the mass ratio of EVA and PA6 higher than 60=40. The PA6=EVA=CB composites which CB particles locate at the interface of EVA and PA6 have the lowest volume resistivity when the mass ratio of two components was 60=40.

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Morphology Control Technologies of Polymeric Materials During Processing

Zhong-wu

et al. 2013

Macro Materials & Eng

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The processing, morphological structure, and properties of polymeric materials are closely related with each other. Morphological structure of polymeric materials is formed in situ under complex temperature and external force fields during processing, and in turn affects the ultimate performances of products. With the increasingly widespread application and more stringent requirement of polymeric materials, improved processing technologies are needed in order to improve product quality. A new processing methodology, i.e., morphology control, appears to achieve a significant improvement by structuring the morphological structure of polymeric materials. This paper presents a summary of four different types of morphology control technologies, namely, shear controlled orientation in injection molding, vibration-assisted injection molding/extrusion, rotational extrusion, and in situ microfibrillation/formation. Methods of application and their resulting effects on morphological structure and mechanical performances of polymeric materials are presented in a review format.

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Mechanical Property and Crystal Structure of Nylon6 Samples Prepared by Vibration Injection Molding

Cited by 6 publications

References 10 publications

Effect of vibration parameters in plasticizing process on properties of polypropylene by dynamic injection molding

Effect of vibration parameters in plasticizing process on properties of polypropylene by dynamic injection molding

Effect of Mixing Process and Morphologies on the Electrical Conductivity of PA6/EVA/CB Composites

Morphology Control Technologies of Polymeric Materials During Processing

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