A Study on Contact Angle and Surface Tension on Copper-ABS for FDM Feedstock

This paper presents the development of a new Copper-ABS feedstock material by the injection molding machine. The material consists of copper powder filled in an acrylonitrile butadiene styrene (ABS) binder and surfactant material. In this study, the effect of metal filled ABS and binder content on the contact angle and surface tension was investigated experimentally. The detailed formulations of compounding ratio with various combinations of a new Copper-ABS feedstock was done by volume percentage (vol. %). Based on the result obtained, an increment by vol. % of copper filler in ABS effected on contact angle and surface tension results. With highly filled copper content in ABS composites increase the surface tension value. It can be observed that, the tendency of the liquid surface that allow to resist an external force in PMC material through an injection molding process.

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Effect of Powder Loading and Binder Materials on Mechanical Properties in Iron-ABS Injection Molding Process

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.315.582 ◽

2013 ◽

Vol 315 ◽

pp. 582-586 ◽

Cited By ~ 5

Author(s):

Nasuha Sa'ude ◽

M. Ibrahim ◽

Wahab Saidin

Keyword(s):

Mechanical Properties ◽

Injection Molding ◽

Iron Powder ◽

Acrylonitrile Butadiene Styrene ◽

Injection Molding Process ◽

Molding Machine ◽

Molding Process ◽

Injection Molding Machine ◽

Feedstock Material ◽

Butadiene Styrene

This paper presents the development of a new polymer matrix composite (PMC) feedstock material by the injection molding machine. The material consists of iron powder filled in an acrylonitrile butadiene styrene (ABS) and surfactant powder (binder) material. In this study, the effect of powder loading and binder content on the mechanical properties was investigated experimentally. The detailed formulations of compounding ratio by Brabender Mixer and injection molding machine of the sample specimen was used with various combinations of the new PMC material. Based on the result obtained, it was found that, higher powder loading of iron filler affected the hardness, tensile and flexural strength of PMC material. With 32% iron powder loading in ABS composites increase the flexural force, maximum stress and force of PMC material through an injection molding process.

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Mechanical Properties of Highly Filled Iron-ABS Composites in Injection Molding for FDM Wire Filament

Materials Science Forum ◽

10.4028/www.scientific.net/msf.773-774.448 ◽

2013 ◽

Vol 773-774 ◽

pp. 448-453 ◽

Cited By ~ 4

Author(s):

Nasuha Sa'ude ◽

Mustaffa Ibrahim ◽

Mohd Halim Irwan Ibrahim

Keyword(s):

Injection Molding ◽

Iron Powder ◽

Matrix Composite ◽

Polymer Matrix ◽

Matrix Material ◽

Acrylonitrile Butadiene Styrene ◽

Polymer Matrix Composite ◽

Injection Molding Process ◽

Molding Process ◽

Volume Percentage

This paper presents the development of a new polymer matrix composite (PMC) material for use in injection molding machine. The material consists of iron powder filled in an acrylonitrile butadiene styrene (ABS) and surfactant powder material. In this study, the effect of iron powder was investigated as a filler material in polymer matrix composite and ABS was chosen as a matrix material. The detailed formulations of compounding ratio by volume percentage (vol. %) with various combinations of the new PMC are investigated experimentally. Based on the result obtained, it was found that, vol. % increment of iron filler effected on the hardness, tensile and flexural strength. With highly filled iron content in ABS composites increase the hardness and tensile strength of PMC material through an injection molding process.

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Stress Whitening as an Observation Method of Residual Stress in MABS Polymer Material through the Example of Holding Pressure in an Injection Molding Process

Polymers ◽

10.3390/polym12122871 ◽

2020 ◽

Vol 12 (12) ◽

pp. 2871

Author(s):

Paweł Brzęk ◽

Tomasz Sterzyński

Keyword(s):

Residual Stress ◽

Injection Molding ◽

Residual Stresses ◽

Local Stress ◽

Acrylonitrile Butadiene Styrene ◽

Processing Parameters ◽

Injection Molding Process ◽

Molding Process ◽

Optical Visualization ◽

Stress Whitening

The effects such as warpage, dimensional instability and environmental stress corrosion, due to the presence of residual stresses in polymeric products, are strongly dependent on injection molding conditions. The holding time and holding pressure belongs to most important processing parameters, determining the dimensional stability and properties of injected goods. A new procedure based on a visualization technique was applied, where the levels of residual stresses of the samples were estimated. The experiments were performed for samples produced of translucent methacrylate acrylonitrile butadiene styrene (MABS), a commodity polymer with a high transparency, necessary for the optical visualization of the stress whitening. The samples produced by injecting molding were deformed to a constant elongation, to observe the dependent stress whitening effect subsequently used to evaluate the stress distribution. It was found that depending on the value of the injection holding pressure, various levels of residual stress and its distribution may be observed in MABS samples. These measurements conformed that the applied optical method is an easy-to-perform technique. The possibility to detect the residual stresses over the whole cross-section of the transparent product, without the necessity for local stress determination, is another significant advantage of this investigation procedure.

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An Analysis of Interfacial Adhesion Between TPU/MWCNT Composites and ABS Substrate by Over Injection Molding

Volume 1: Processing ◽

10.1115/msec2016-8571 ◽

2016 ◽

Author(s):

Catalin Fetecau ◽

Felicia Stan ◽

Nicoleta Violeta Cristea ◽

Laurentiu Ionut Sandu

Keyword(s):

Carbon Nanotubes ◽

Injection Molding ◽

Flow Behavior ◽

Thermoplastic Polyurethane ◽

Acrylonitrile Butadiene Styrene ◽

Injection Molding Process ◽

Molding Process ◽

Melt Temperature ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

In this work, the advantages of Thermoplastic Polyurethane (TPU) filled with multi-walled carbon nanotubes (MWCNTs) were combined with those of the over injection molding process in order to obtain two-component (2k) structures with very different but high mechanical and electrical properties. TPU/MWCNT composites with different MWCNTs wt.% were over-molded onto Acrylonitrile Butadiene Styrene (ABS) substrates, under different processing conditions, and the adhesion was assessed by T-peel tests at room temperature. Since adhesion is also related to flow behavior, the rheological properties were studied with a capillary rheometer at shear rates similar to those of the injection molding process (102∼104s−1). Experimental results indicated that the most effective way to control the adhesion between the ABS substrate and the over-molded TPU/MWCNT composite is to increase the melt temperature. The addition of carbon nanotubes improves adhesion in the vicinity of 0.5 wt.% MWCNTs.

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Comparison between Single and Multi Gates for Minimization of Warpage Using Taguchi Method in Injection Molding Process for ABS Material

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.594-595.842 ◽

2013 ◽

Vol 594-595 ◽

pp. 842-851 ◽

Cited By ~ 3

Author(s):

S.M. Nasir ◽

Khairul Azwan Ismail ◽

Z. Shayfull ◽

Norshah Afizi Shuaib

Keyword(s):

Injection Molding ◽

Acrylonitrile Butadiene Styrene ◽

Mold Material ◽

Injection Molding Process ◽

Inlet Temperature ◽

Molding Process ◽

Melt Temperature ◽

Thermoplastic Material ◽

Packing Pressure ◽

Packing Time

In this study, a mold is designed in single and dual type of gate in order to investigate the deflection of warpage for thick component in injection molding process. Autodesk Moldflow Insight software was used as a medium for experimental tested. Nessei NEX 1000 injection molding machine and P20 mold material details were entered in this study to get more accurate data on top of Acrylonitrile Butadiene Styrene (ABS) as a molded thermoplastic material. Taguchi orthogonal array, analysis of Signal to Noise (S/N) ratio and Analysis of Variance (ANOVA) were implemented to get the best combination of parameter and significant factor that affect the warpage problem for both types of gates. Coolant inlet temperature, melt temperature, packing pressure and packing time are the selected parameter that used in this study. A conformation test is conducted to verify the combination parameters optimized. From the result, multi gates used was founded that can decrease the deflection of warpage for thick product. From ANOVA, the most significant factor is melt temperature for single gate, and coolant inlet temperature for multi gate. Packing pressure and packing time were slightly influence on warpage problem for both studies.

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Experimental Characterization and Simulation of Thermoplastic Polymer Flow Hesitation in Thin-Wall Injection Molding Using Direct In-Mold Visualization Technique

Micromachines ◽

10.3390/mi11040428 ◽

2020 ◽

Vol 11 (4) ◽

pp. 428

Author(s):

Francesco Regi ◽

Patrick Guerrier ◽

Yang Zhang ◽

Guido Tosello

Keyword(s):

Injection Molding ◽

High Speed ◽

Pressure Sensors ◽

Injection Pressure ◽

Acrylonitrile Butadiene Styrene ◽

Injection Molding Process ◽

Thin Wall ◽

Molding Process ◽

Video Recordings ◽

Wall Injection

A special mold provided with a glass window was used in order to directly evaluate the flow progression during the filling phase of the injection molding process in a thin-wall cavity and to validate the simulation of the process with particular focus on the hesitation effect. The flow of the polymer was recorded at 500 frames per second using a high-speed camera (HSC). Two unfilled thermoplastic polymers, acrylonitrile butadiene styrene (ABS), and polypropylene (PP), were used to fill two different 50 mm × 18 mm staircase geometry cavities, which were specifically designed to evaluate the hesitation effect with thicknesses of 1500, 1250, 1000, 750, 500 µm (cavity insert no. 1) and 1500, 1200, 900, 600, 300 µm (cavity insert no. 2). In addition to the video recordings, the simulations were validated using the timings and the data obtained by three pressure sensors and two thermocouples located in the cavity. For each injection cycle recorded on camera the machine data were collected to carefully implement the correct boundary conditions in the simulations. The analysis of the video recordings highlighted that flow progression and hesitation were mainly influenced not only by the thickness, but also by the velocity and the material type. The simulation results were in relatively good agreement with the experiments in terms of flow pattern and progression. Filling times were predicted with an average relative error deviation of 2.5% throughout all the section thicknesses of the cavity. Lower accuracies in terms of both filling times and injection pressure were observed at increasingly thinner sections.

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Thermal Performance of Acrylonitrile Butadiene Styrene (ABS) Copolymer Blended with PTFE Particle/Polymer Composite

Materials Science Forum ◽

10.4028/www.scientific.net/msf.969.444 ◽

2019 ◽

Vol 969 ◽

pp. 444-450

Author(s):

R. Mahesh Kumar ◽

N. Rajini ◽

K. Mayandi ◽

Suchart Siengchin

Keyword(s):

Thermal Expansion ◽

Thermal Properties ◽

Linear Thermal Expansion ◽

Acrylonitrile Butadiene Styrene ◽

Injection Molding Process ◽

Molding Process ◽

Particle Reinforcement ◽

Ptfe Particle ◽

Reinforcement Material ◽

Butadiene Styrene

Acrylonitrile Butadiene Styrene (ABS) polymer and Polytetrafluroethylene (PTFE) polymer has different properties individually. In this work ABS is used as matrix and PTFE is used as particle reinforcement. ABS is a copolymer containing butadiene, styrene and acrylonitrile. This work is to focus about the thermal property of ABS copolymer by adding PTFE as particle in polymer composites. From the analysis PTFE fit into a perfect particle reinforcement material for a broad assortment of utilizations. The samples is prepared with 100% ABS and 10% PTFE by weight, 20% PTFE is added to ABS and fabricated with Injection molding process. The addition of PTFE to ABS has improved on thermal properties. Experiment results shows that PTFE filler added composites exhibited high thermal conductivities and good coefficient of linear thermal expansion when compared with pure ABS copolymer.

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