☆ 4.6 Article

In situ flow state characterization of molten resin at the inner mold in injection molding

JOURNAL OF APPLIED POLYMER SCIENCE (2023)

Related references

Note: Only part of the references are listed.

Article Thermodynamics

Monitoring and viscosity identification via temperature measurement on a polymer injection molding line

Qiao Lin et al.

Summary: Recent studies highlight the significance of monitoring equipment/strategy for energy efficiency and quality control in polymer processing. Novel devices and methods are proposed for temperature and viscosity measurements in polymer production. This paper employs an annular measuring device on an injection molding machine to detect material changes through temperature measurements. A unique inverse method based on the viscous dissipation phenomenon is introduced for viscosity identification using temperature measurements of the annular device. The identification process successfully distinguishes the viscosity difference between two polymers, and the results align well with available viscosity curves from literature. (c) 2023 Elsevier Ltd. All rights reserved.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2023)

Add to Collection

Review Automation & Control Systems

Recent progress in minimizing the warpage and shrinkage deformations by the optimization of process parameters in plastic injection molding: a review

Nan-yang Zhao et al.

Summary: Quality control of plastic products is crucial in the plastic injection molding process. Warpage and shrinkage deformations are common defects caused by various process parameters. This review presents the causes of these defects and discusses the mechanisms by which process parameters affect them. Recent progress in experimental design and advanced methods for optimizing process parameters is summarized, and future perspectives for quality control in injection molding machines are discussed.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2022)

Add to Collection

Article Thermodynamics

In-line viscosity identification via thermal-rheological measurements in an annular duct for polymer processing

Qiao Lin et al.

Summary: This study proposes several inverse method strategies for estimating the viscosity of a fluid during an injection process through thermal-rheological measurements. The central axis of an annular duct provides robust thermal measurements that can be correlated to the fluid viscosity. The main advantage of these strategies is that flowrate modulation is not necessary for viscosity estimation.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2022)

Add to Collection

Article Engineering, Chemical

Self-optimization of the V/P switchover and packing pressure for online viscosity compensation during injection molding

Yuxuan Xu et al.

Summary: This article establishes a real-time monitoring and control model for viscosity compensation and achieves automatic adjustment, effectively solving the problem that traditional injection molding equipment cannot correctly sense and adjust viscosity fluctuations.

POLYMER ENGINEERING AND SCIENCE (2022)

Add to Collection

Article Engineering, Multidisciplinary

Real-time video recognition for assessing plastic viscosity of ultra-high-performance concrete (UHPC)

Pengwei Guo et al.

Summary: This paper presents a video recognition technology for real-time assessment of plastic viscosity in ultra-high-performance concrete (UHPC) mixing. The method utilizes a long-term recurrent convolutional network to extract spatial and temporal features from the video and correlate them with plastic viscosity measured from a rheometer. The study also investigates the effects of plastic viscosity on fiber dispersion, air content, and flexural properties of UHPC. The results demonstrate the significant influence of plastic viscosity on fiber distribution and air void content, thus affecting the flexural properties of UHPC. The presented method enables real-time assessment of plastic viscosity for control of flexural properties and air void content, greatly facilitating quality control for UHPC production.

MEASUREMENT (2022)

Add to Collection

Review Polymer Science

Associative thickeners for waterborne paints: Structure, characterization, rheology, and modeling

Ronald G. Larson et al.

Summary: Architectural coatings/paints are crucial in beautifying, providing comfort, and enhancing energy efficiency in our houses and workplaces. This review focuses on the rheology modifiers (RMs), specifically associative thickeners (AT), and highlights the relationship between thickener molecular structure, paint formulation, rheology, and application. Various chemistries of associative thickeners, such as hydrophobic alkali-swellable emulsion (HASE), hydrophobically modified hydroxyethylcellulose (HMHEC), and hydrophobically modified ethoxylated urethane (HEUR) polymers, are briefly described. The structure and rheology of aqueous solutions and model paints containing HEURs and latex particles are reviewed, along with experimental studies and theoretical models. The influence of rheological metrics on specific paint application features is also discussed.

PROGRESS IN POLYMER SCIENCE (2022)

Add to Collection

Article Engineering, Manufacturing

Optimizing process parameters in micro injection moulding considering the part weight and probability of flash formation

Gianluca Trotta et al.

Summary: This paper proposes an experimental procedure for selecting the optimal processing parameters in micro injection moulding considering two quality features: flash formation and weight of the component. The experimental results show that melting temperature, holding pressure, moulding temperature, and injection speed have significant influence on flash formation and weight of the component. The selection of the optimal process parameters is performed using a utility function that maximizes the part weight penalized by the probability of flash formation.

JOURNAL OF MANUFACTURING PROCESSES (2022)

Add to Collection

Article Materials Science, Multidisciplinary

In-line steady shear flow characteristics of polymer melt in rectangular slit cavities during thin-wall/micro injection molding

Wangqing Wu et al.

Summary: Both scale and temperature field effects have a considerable impact on polymer melt viscosity during thin-wall/micro injection molding. In this study, an in-line rheological test was adopted to analyze the rheological properties and improve the simulation accuracy. The results demonstrate that injection molding conditions, cavity thickness, and melt temperature significantly affect the melt viscosity.

MATERIALS & DESIGN (2022)

Add to Collection

Article Engineering, Chemical

On-line melt temperature measurements for polymer injection molding through an instrumented annular duct

Qiao Lin et al.

Summary: This study investigates the thermal behavior of polymer flow in an injection molding machine by testing an instrumented annular duct as a nozzle on the downstream side of the screw-barrel. The results show that the melt temperature decreases during fast production, and the temperature measurements in an annular geometry prove to be robust for process monitoring.

POLYMER ENGINEERING AND SCIENCE (2022)

Add to Collection

Article Polymer Science

Studies on preparation and formation mechanism of poly (lactide-co-glycolide) microrods via one-step electrospray and an application for drug delivery system

Junwei Xu et al.

Summary: In this study, uniformly sized microrods were fabricated via one-step electrospray using low viscosity, mainly low concentration, and low molecular weight poly(lactide-co-glycolide) (PLGA) solutions. The microrods obtained had diameters of 0.5-2.0 μm and lengths of 4-20 μm when the concentration of the solution and molecular weight of the polymer were decreased. Moreover, the aspect ratio of the microrods decreased significantly with different experimental conditions.

EUROPEAN POLYMER JOURNAL (2021)

Add to Collection

Article Materials Science, Characterization & Testing

Study of rheological behaviour of polymer melt in micro injection moulding with a miniaturized parallel plate rheometer

G. Trotta et al.

Summary: This research focused on studying the rheological behavior of polymer melt in micro cavities using a micro injection molding machine. The results indicate that reducing viscosity can enhance melt flow efficiency and overcome the extreme conditions in micro injection molding.

POLYMER TESTING (2021)

Add to Collection

Article Chemistry, Analytical

A micropillar-based microfluidic viscometer for Newtonian and non-Newtonian fluids

Adil Mustafa et al.

ANALYTICA CHIMICA ACTA (2020)

Add to Collection

Review Nanoscience & Nanotechnology

Viscoelastic microfluidics: progress and challanges

Jian Zhou et al.

MICROSYSTEMS & NANOENGINEERING (2020)

Add to Collection

Article Mechanics

The flow of power-law fluids in concentric annuli: A full analytical approximate solution

Remi Deterre et al.

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS (2020)

Add to Collection

Article Materials Science, Composites

Manipulating phase structure of biodegradable PLA/PBAT system: Effects on dynamic rheological responses and 3D printing

Yang Lyu et al.

COMPOSITES SCIENCE AND TECHNOLOGY (2020)

Add to Collection

Article Materials Science, Paper & Wood

The potential of TEMPO-oxidized cellulose nanofibrils as rheology modifiers in food systems

Ragnhild Aaen et al.

CELLULOSE (2019)

Add to Collection

Article Polymer Science

In-mold and Machine Sensing and Feature Extraction for Optimized IC-tray Manufacturing

Shih-Chih Nian et al.

POLYMERS (2019)

Add to Collection

Article Chemistry, Physical

Experimental evaluation of dispersion behavior, rheology and thermal analysis of functionalized zinc oxide-paraffin oil nanofluids

Suhaib Umer Ilyas et al.

JOURNAL OF MOLECULAR LIQUIDS (2019)

Add to Collection

Article Thermodynamics

Online quality monitoring of molten resin in injection molding

Jian-Yu Chen et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2018)

Add to Collection

Article Biotechnology & Applied Microbiology

Online measurement of viscosity for biological systems in stirred tank bioreactors

Maximilian Schelden et al.

BIOTECHNOLOGY AND BIOENGINEERING (2017)

Add to Collection

Article Mechanics

Relaxation time of dilute polymer solutions: A microfluidic approach

Francesco Del Giudice et al.

JOURNAL OF RHEOLOGY (2017)

Add to Collection

Article Chemistry, Analytical

Viscosity Measurements Using Microfluidic Droplet Length

Yunzi Li et al.

ANALYTICAL CHEMISTRY (2017)

Add to Collection

Review Medicine, Research & Experimental

Molecular basis of high viscosity in concentrated antibody solutions: Strategies for high concentration drug product development

Dheeraj S. Tomar et al.

MABS (2016)

Add to Collection

Article Multidisciplinary Sciences

A moving contact line as a rheometer for nanometric interfacial layers

Romain Lhermerout et al.

NATURE COMMUNICATIONS (2016)

Add to Collection

Article Automation & Control Systems

Quality control using a multivariate injection molding sensor

Guthrie Gordon et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2015)

Add to Collection

Article Chemistry, Analytical

Single cell trapping and cell-cell interaction monitoring of cardiomyocytes in a designed microfluidic chip

Wilfred Espulgar et al.

SENSORS AND ACTUATORS B-CHEMICAL (2015)

Add to Collection

Article Materials Science, Characterization & Testing

In-line rheological testing of thermoplastics and a monitored device for an injection moulding machine: Application to raw and recycled polypropylene

Angel Fernandez et al.

POLYMER TESTING (2014)

Add to Collection

Article Materials Science, Multidisciplinary

Towards nano-injection molding

Nan Zhang et al.

MATERIALS TODAY (2012)

Add to Collection

Article Biochemical Research Methods

High-throughput rheology in a microfluidic device

Kelly M. Schultz et al.

LAB ON A CHIP (2011)

Add to Collection

Article Materials Science, Characterization & Testing

Online measurement of rheological properties of polypropylene based on an injection molding machine to simulate the injection-molding process

Gang Gou et al.

POLYMER TESTING (2011)

Add to Collection

Article Materials Science, Characterization & Testing

Shear viscosity measurements of polymer melts using injection molding machine with adjustable slit die

Johanna Aho et al.

POLYMER TESTING (2011)

Add to Collection

Article Engineering, Chemical

Development of a Rheo-Dielectric Sensor for Online Shear Stress Measurement During the Injection Molding Process

Yiyan Peng et al.

POLYMER ENGINEERING AND SCIENCE (2010)

Add to Collection

Article Engineering, Electrical & Electronic

Thermo-rheological behaviour of polymer melts in microinjection moulding

J. C. Vasco et al.

JOURNAL OF MICROMECHANICS AND MICROENGINEERING (2009)

Add to Collection

Article Engineering, Electrical & Electronic

Study on rheological behavior of polymer melt flowing through micro-channels considering the wall-slip effect

RD Chien et al.

JOURNAL OF MICROMECHANICS AND MICROENGINEERING (2005)

Add to Collection

Article Thermodynamics

Preliminary study of polymer melt rheological behavior flowing through micro-channels

SC Chen et al.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2005)

Add to Collection

© Peeref 2019-2024. All rights reserved.