Study on volume⁃pulsation injection⁃molding technology for plastics

doi:10.19491/j.issn.1001-9278.2023.09.014

Abstract

Abstract:

According to the volume pulsation injection⁃molding technology and equipment， the effects of pulsation force field on the flowability， cavity pressure response， and microstructure of polymeric materials were analyzed by means of the experimental data. The strengthening effects of pulsation force field on injection and packing processes were clarified. The self⁃toughening and self⁃reinforcement of immiscible polymer blending systems under a pulsation force field were revealed. The advantages and potential applications of the pulsation force field in optimizing the injection⁃molding process and improving the service performance of injection⁃molded products were clarified through introducing the research progress in the volume pulsation injection⁃molding technology.

Key words: pulsation force field, injection molding, polymer

CLC Number:

TQ320.66⁺2

QIN Sen, HE Hezhi, ZHANG Tao, HUANG Zhaoxia, QU Jinping. Study on volume⁃pulsation injection⁃molding technology for plastics[J]. China Plastics, 2023, 37(9): 96-101.

Figures/Tables 7

Fig.1. Electromagnetic dynamic injection molding machine

Fig.2. Volume⁃pulsation injection molding technology and equipment

Fig.3. The capillary rheometer and test data based on pulsation force field

Fig.4. Injection mold cavity pressure test

Fig.5. Mechanical properties of HDPE/PET blend under pulsation force field

Fig.6. 2D⁃WAXD patterns at different processing conditions

Fig.7. The （110） azimuthal distributions at different processing conditions

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