Ultrasonic injection molding of glass fiber reinforced polypropylene parts using tungsten carbide-cobalt mold core

Liang, Xiong; Liu, Yongjing; Liu, Zehang; Ma, Jiang; Zhang, Zhenxuan; Ruan, Wenqing; Ren, Shuai; Peng, Taijiang; Wu, Xiaoyu; Shi, Huaizhong

doi:10.1016/j.matdes.2021.109771

Cited by 15 publications

(4 citation statements)

References 24 publications

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“…The process effectively promoted the thermal performance and mechanical properties of the microparts. Liang et al [ 16 ] developed a highly accurate hybrid process that combines ultrasonic injection molding and electrical discharge machining to manufacture microparts of GF/PP (glass fiber-reinforced polypropylene).…”

Section: Introductionmentioning

confidence: 99%

Polypropylene-Based Polymer Locking Ligation System Manufacturing by the Ultrasonic Micromolding Process

Elías-Grajeda,

Vázquez-Lepe,

Siller

et al. 2023

Polymers

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In recent years, there has been a growing demand for biocompatible medical devices on the microscale. However, the manufacturing of certain microfeatures has posed a significant challenge. To address this limitation, a new process called ultrasonic injection molding or ultrasonic molding (USM) has emerged as a potential solution. In this study, we focused on the production of a specific microdevice known as Hem-O-Lok, which is designed for ligation and tissue repair during laparoscopic surgery. Utilizing USM technology, we successfully manufactured the microdevice using a nonabsorbable biopolymer that offers the necessary flexibility for easy handling and use. To ensure high-quality microdevices, we extensively investigated various processing parameters such as vibration amplitude, temperature, and injection velocity. Through careful experimentation, we determined that the microdevice achieved optimal quality when manufactured under conditions of maximum vibrational amplitude and temperatures of 50 and 60 °C. This conclusion was supported by measurements of critical microfeatures. Additionally, our materials characterization efforts revealed the presence of a carbonyl (C=O) group resulting from the thermo-oxidation of air in the plasticizing chamber. This finding contributes to the enhanced thermal stability of the microdevices within a temperature range of 429–437 °C.

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Section: Introductionmentioning

confidence: 99%

Polypropylene-Based Polymer Locking Ligation System Manufacturing by the Ultrasonic Micromolding Process

Elías-Grajeda,

Vázquez-Lepe,

Siller

et al. 2023

Polymers

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“…Under extreme environments, such as high temperature, high pressure, acidic, alkaline and salty conditions, polymer materials can maintain ideal physical and chemical stability and good mechanical strength ( deLeon et al., 2016 ; Du et al., 2022 ; Gu et al., 2021 ). In addition, micro/nanostructures can be successfully constructed on the surface of thermoplastic polymers via molding, 3D printing, and injection molding and extrusion, which are characterized by their high efficiency and high accuracy ( Liang et al., 2021 ; Xie et al., 2017 , 2022 ; Bai et al., 2022 ; Park et al., 2022 ). For instance, Wu et al.…”

Section: Introductionmentioning

confidence: 99%

Efficient fabrication of tilt micro/nanopillars on polypropylene surface with robust superhydrophobicity for directional water droplet rebound

Du¹,

Wu²,

Li³

et al. 2022

iScience

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“…Therefore, this ultrasonic technique is a promising candidate for the nondestructive and nonintrusive method of real-time process diagnosis [28]. Ultrasonic technique has been applied for diagnosis of injection molding, co-injection molding, microfluidic devices fabrication [21,29,30].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterizations of PbZr_xTi_1-xO₃ (PZT) Ultrasonic Sensing Chips

et al. 2022

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PbZrxTi1-xO3 (PZT) ultrasonic sensing chips were fabricated by ball milling, electrical discharge and spraying on iron sheets. Various PZT growth conditions, including the thickness of the iron sheet and the coating layers, were investigated. Ultrasonic sensing measurements indicated that PZT chips of sufficient thickness and with 6 or 9 coating layers exhibited ultrasonic sensing capability. Further, multiple material and electrical characterizations revealed that while sufficient thickness and low leakage were required, uniform growth of the film and a grain size of approximately 150 nm were preferable for ultrasonic sensing. Their compact size, rapid response, and low cost make PZT-based ultrasonic sensors promising for future ultrasonic detection application.

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Ultrasonic injection molding of glass fiber reinforced polypropylene parts using tungsten carbide-cobalt mold core

Cited by 15 publications

References 24 publications

Polypropylene-Based Polymer Locking Ligation System Manufacturing by the Ultrasonic Micromolding Process

Polypropylene-Based Polymer Locking Ligation System Manufacturing by the Ultrasonic Micromolding Process

Efficient fabrication of tilt micro/nanopillars on polypropylene surface with robust superhydrophobicity for directional water droplet rebound

Fabrication and Characterizations of PbZr_xTi_1-xO₃ (PZT) Ultrasonic Sensing Chips

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Ultrasonic injection molding of glass fiber reinforced polypropylene parts using tungsten carbide-cobalt mold core

Cited by 15 publications

References 24 publications

Polypropylene-Based Polymer Locking Ligation System Manufacturing by the Ultrasonic Micromolding Process

Polypropylene-Based Polymer Locking Ligation System Manufacturing by the Ultrasonic Micromolding Process

Efficient fabrication of tilt micro/nanopillars on polypropylene surface with robust superhydrophobicity for directional water droplet rebound

Fabrication and Characterizations of PbZrxTi1-xO3 (PZT) Ultrasonic Sensing Chips

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Product

Resources

About

Fabrication and Characterizations of PbZr_xTi_1-xO₃ (PZT) Ultrasonic Sensing Chips