دانلود کتاب Advances in Polymer Processing 2020: Proceedings of the International Symposium on Plastics Technology

فهرست مطالب :

Editorial
Contents
Scientific Committee
Photoluminescent Tracer Effects on Thermoplastic Polymer Recycling
Abstract.
1 Polymers in the European Circular Economy
2 Photoluminescent Tracers
3 Tracer Based Plastic Sorting Experiences and Challenges
4 Application: PVC Profiles from the Building Industry
5 Application: Polymer Packaging
6 Tracer Substances Regime
7 Implementation of Tracer Based Sorting in Industry
8 Summary
References
An Efficient Strategy Based on Hyperspectral Imaging for Brominated Plastic Waste Sorting in a Circular Economy Perspective
Abstract.
1 Introduction
2 Materials and Methods
2.1 Materials
2.2 Methods
Portable X-Ray Fluorimeter.
Hyperspectral Imaging.
3 Results
3.1 X-Ray Fluorescence
3.2 Hyperspectral Imaging
Spectral Signatures and Principal Component Analysis (PCA).
Partial Least-Squares Discriminant Analysis (PLS-DA).
4 Conclusion
References
Melt-Processing of Biopolymer Composites with Nanocellulose Additives
Abstract.
1 Introduction
2 Materials and Methods
3 Results and Discussion
3.1 Morphology
3.2 Melt-Rheology
3.3 Thermal Properties
3.4 Mechanical Properties
4 Conclusion
References
Continuous Chemical Recycling of Polystyrene with a Twin – Screw Extruder
Abstract.
1 Introduction
2 Materials and Methods
2.1 Methodical Approach
2.2 Characterisation of Residues and Condensate
3 Results and discussion
3.1 Influence of Different Polystyrene grades on Depolymerisation
4 Conclusion and outlook
References
Development of a Solids Conveying Throughput Model for Grooved Barrel Extruders Based on Discrete Element Simulations
Abstract.
1 Introduction
1.1 Process Engineering and Conventional Calculation Methods of Grooved Barrel Extruders
1.2 Principles of the Discrete Element Method
2 Description of the Simulation Model
3 Preliminary Investigations
3.1 Variation of Coefficients of Friction
3.2 Variation of Grooves Angle
4 Development of a Regression Model
5 Conclusion and Outlook
References
Foam Extrusion of Elastomers using Water as Physical Blowing Agent
Abstract.
1 Introduction
1.1 Potential Regulation of Chemical Blowing Agents by REACH Directive
1.2 Water as a Physical Blowing Agent for Elastomers
2 Methods
2.1 Compound Production and Incorporation of Blowing Agents
2.2 Extrusion and Evaluation of the Processability
2.3 Continuous and Discontinuous Vulcanisation and Foaming of the Profile Samples
2.4 Evaluation of the Extrudates Surface Quality
2.5 Mechanical Analysis of the Foamed Elastomers
2.6 Optical Analysis of the Cell Structure
3 Results
3.1 Barrel Temperature of the Extruder Affects Surface Quality and Foam Structure
3.2 Influence of the Vulcanisation Process on the Extrudate Quality
4 Discussion
5 Summary and Conclusion
References
Homogenisation of the Wall Thickness Distribution of Thermoformed Cups by using Different Pre-stretch Plugs and Process Parameter Settings to Improve Material Efficiency
Abstract.
1 Introduction and Motivation
2 Design of Pre-stretch Plugs in Thermoforming
3 Process Parameters and Evaluation Methodology
4 Analysis of the Wall Thickness Distribution using Different Pre-stretch Plug Geometries
5 Analysis of Homogeneity of the Wall Thickness Distribution
6 Analysis of the Top-Load Stability of the Formed Cups
7 Analysis of Plug Force and Wall Thickness Distribution
8 Conclusion and Outlook
References
Barrier Screw Design for High-Performance Plasticizing in Injection Molding
Abstract.
1 High-Performance Plasticizing
1.1 Comparison of Different Screw Concepts with Respect to Plasticizing Rate
1.2 Barrier Melting Sections
2 Simulation of Polymer Flow in Barrier Screws
2.1 Grid Generation and Modelling of the Plasticizing Process
2.2 Material Characterization
2.3 Experimental Evaluation of Simulation Results
2.4 Increasing the Plasticizing Performance with Barrier Screws
2.5 Summary and Outlook
References
Development of IoT Device for Temperature and Cavity Pressure Measurements
Abstract.
1 Introduction
2 Experimental Setup
3 Results
4 Conclusion
References
Targeted Manipulation of Fibre Orientation Through Relative Movement in an Injection Mould
Abstract.
1 Introduction
2 Process Implementation and Experimental Procedure
2.1 Process Implementation
2.2 Experimental Procedure
3 Experimental Results
3.1 Mechanical Tests
3.2 Microscopic Investigations
3.3 Computed Tomography Scan
4 Conclusion and Outlook
References
Data Driven Injection Moulding
Abstract.
1 State of the Art
1.1 Use of Machine Learning in the Field of Injection Moulding
1.2 Goals and Risks
2 Investigations
2.1 Feasibility Study for the Usage of ML: Quality Data Prediction
2.2 Anomaly Detection: Capabilities for Predictive Maintenance
3 Conclusion and Outlook
References
A Holistic Approach to Part Quality Prediction in Injection Molding Based on Machine Learning
Abstract.
1 Introduction
2 Methods
2.1 Data Acquisition and Preparation
2.2 Feature Selection
Search Strategies.
Performance Evaluation Metric.
2.3 Data Modeling and Hyperparameter-Optimization
3 Evaluation
3.1 Data Generation
3.2 Feature Selection
3.3 Learning Algorithms
4 Conclusion and Outlook
References
Automated 3D Skeleton Winding Process for Continuous-Fiber-Reinforcements in Structural Thermoplastic Components
Abstract.
1 Introduction
2 3DSW Method
3 Development of a New Generic 3D Test Specimen
4 Experimental
4.1 Commingled Yarn Processing
4.2 Materials
4.3 Test Specimens
4.4 Robot-based 3D Skeleton Winding and Overmolding
4.5 Mechanical Testing
5 Results and Discussion
6 Conclusion
References
Towards Process Optimisation of Polyurethane Pultrusion Using 3D Simulation
Abstract.
1 Introduction
2 State-of-the-Art
3 A New Kinetic Model and Its Parameters
4 Simulation Model and Validation
5 Criteria for Process and Part Quality
6 Parameter Study: Influence of Line Speed, Die Temperatures, Profile Thickness and Initial Material Temperature
7 Summary and Outlook
References
Assistance Machine Function for BMC Injection Molding
Abstract.
1 Introduction
2 Experimental
3 Results
4 Discussion
5 Conclusion
References
The Influence of Hydrothermal Aging on the Material Properties of Continuous Fiber-Reinforced Thermoplastics and its Non-Destructive Characterization
Abstract.
1 Introduction
1.1 Influence of the Fiber-Matrix Boundary Layer on the Composite Material
1.2 Aging of Fiber-Reinforced Thermoplastics
2 Experimental Investigations
3 Results and Discussion
4 Conclusion and Outlook
References
Integration Concept of Injection, Forming and Foaming: A Practical Approach to Manufacture Hybrid Structures
Abstract.
1 Introduction
1.1 Polymer Injection Forming (PIF)
1.2 Supercritical Fluid (Sc.F.) Assisted Injection Molding
1.3 Supercritical Fluid-Assisted Polymer Injection Forming (SFPIF)
2 Design of Experiments and Process Settings
3 Measurements and Sample Preparation
4 Results and Feasibility of Integration Concept
4.1 Initial Trials and Observation
4.2 Dimensional Properties and Shrinkage
4.3 Weight and Weight Reduction
4.4 Micro-Structure: Cell Size and Density
5 Summary
References
Potential of Mesoscale Structural Elements in the Interface of Hybrid CFRP-Metal-Parts on the Load Transfer
Abstract.
1 Introduction
1.1 Pin Structures in CFRP-Connections
1.2 Cohesive Zone Models and Parameters
1.3 Content of the Contributions
2 Experimental Tests
3 FEM Analysis Study
3.1 FEM Model
3.2 Comparative Simulation Models with and Without a Pin
3.3 Parametric Study
4 Results
5 Conclusion
References
Interaction Between Foam Injection Molding and Welding Process
Abstract.
1 Introduction
2 Experimental
3 Results and Discussion
3.1 Mechanical and Morphological Examinations of Injection Molded Parts
3.2 Mechanical and Optical Properties of Vibration Welded Parts
4 Conclusion
References
Prediction of the Bond Strength of Thermoplastics Welded by Laser Transmission Welding
Abstract.
1 Introduction and Objective
2 State of the Art
3 Simulation Model for Laser Transmission Welding
3.1 Thermal Simulation
3.2 Thermomechanical Simulation
3.3 Calculation of the Weld Strength
4 Results
4.1 Thermal Simulation
4.2 Thermomechanical Simulation
4.3 Calculation of the Weld Strength
5 Conclusion and Outlook
References
Permeation Properties of Laser-Sintered Polyamide 12 Sheets in Comparison to an Extruded Polyamide 12 Film
Abstract.
1 Introduction
2 Basic Permeation Theory
3 Materials and Methods
3.1 Production of Samples
3.2 Analysis of the Material Structure
3.3 Permeation Experiments
4 Results
4.1 Porosity
4.2 Crystallinity and Crystal Structure
4.3 Water Vapor and Oxygen Permeation Properties
5 Discussion
6 Conclusion
References
Viscoelastic Modelling of Polymer Melts and Rubber Compounds
Abstract.
1 Introduction
2 Experimental
2.1 Material
2.2 Oscillatory and Capillary Rheology
2.3 Simulation
3 Results and Discussion
3.1 Rheological Characterization
3.2 Viscoelastic Modelling
3.3 Numerical Results
4 Conclusion
Literatur
A Study on the Determination of Virtual Process and Quality Data in Injection Molding Simulation
Abstract.
1 Introduction
2 Experimental and Numerical Setup
2.1 Design of Experiments (DoE) in Injection Molding
2.2 Simulation Setup of the Problem
3 Results and Discussion
3.1 Results from Simulations
3.2 Discussion of Results
4 Conclusion
References
Strength Development in Overmolded Structures
Abstract.
1 Introduction
1.1 Overmolding
1.2 Interface Strength Development
2 Experimental Study
3 Numerical Study
4 Results and Discussion
4.1 Degree of Melting Modeling for Constant Heating Rates
4.2 Degree of Melting Modeling for Non-constant Heating Rates
4.3 Correlation with Structural Performance
5 Conclusions and Outlook
References
Simulation of Solidification of a Nucleated Isotactic Polypropylene in a Quiescent Condition
Abstract.
1 Introduction
1.1 Importance of Nucleating Agents
1.2 A Multiscale Simulation Chain to Predict Microstructure Dependent Effective Elastic Properties of Injection-Moulded Polypropylene
2 A New Model to Predict the Microstructure of Semi-Crystalline Thermoplastics
3 Set of Experiments to Calibrate the Implemented Model for Simulation
4 Results
5 Conclusion
References
Investigations on the Influence of High Pressures on the Curing Behaviour and Material Properties of Composite Structures for the Development of a Material Model
Abstract.
1 Introduction
2 Model Approach
3 Experimental Investigations on Pressure Dependency
3.1 Pressure Effects During Curing
3.2 Pressure Effects on Final Material Properties
4 Conclusion and Outlook
References
Digital Twin of the Polyurethane Rotational Moulding Process
Abstract.
1 Introduction
2 Basics of Computational Fluid Dynamics
3 Rotational Moulding Simulation with OpenFOAM
4 Digital Twin for the Engineering Process of Roto-Moulded Components
5 Conclusion
References
Author Index