Optimization study on wet electrostatic powder coating process to manufacture UHMWPE/LDPE towpregs

2022 ◽  
pp. 152808372110709
Author(s):  
Ashraf Nawaz Khan ◽  
Vijay Goud ◽  
Ramasamy Alagirusamy ◽  
Puneet Mahajan ◽  
Apurba Das
Keyword(s):  
Process Parameters ◽  
Volume Fraction ◽  
Fiber Surface ◽  
Spray Coating ◽  
Air Pressure ◽  
Processing Temperature ◽  
Coating Process ◽  
Fiber Volume ◽  
Matrix Deposition ◽  
Uhmwpe Fibers

In the present study, an attempt has been made to coat the non-conductive Ultra-high Molecular Weight Polyethylene (UHMWPE) fibers with Low-Density Polyethylene (LDPE) powder. In order to enable the deposition of electrostatically charged LDPE powder onto the fiber surface, UHMWPE fibers are dipped into a surface modification bath to impart momentary conductivity. Further, Box Behnken’s experimental design is used to optimize the processing parameters for Fiber Volume Fraction (Vf) for this wet electrostatic spray coating process. An experimental multi-parametric equation is acquired through response surface methodology to ascertain the association amid the process parameters such as processing temperature (A), conveying air pressure (B), and gun nozzle angle (C) on the output response of Vf. The process parametric values for A, B, and C are varied from 225°C to 245°C, 0.2 bar to 0.4 bar, and 0° to 120° respectively. The Vf obtained is in the range of 37.02%–56.28% depending on the combination of process parametric values. Powder pick-up increases with an increase in the gun nozzle angle. An increase in conveying air pressure and temperature of the hot air oven leads to an increase in powder deposition. The values predicted from the model are observed to be in close proximity (94.59%) to the experimental results. Gun nozzle angle is the principal parameter affecting the matrix deposition on the fiber surface in comparison to other process parameters.

Coating Nano-TiO2 on Optical Fiber with Al(H2PO4)3 Adhesive

2007 ◽  
Vol 280-283 ◽  
pp. 485-488 ◽  
Author(s):  
Yu Hong Zhao ◽  
Jia Chen Liu ◽  
Shun Li ◽  
Yi Rong Liu
Keyword(s):  
Optical Fiber ◽  
Process Parameters ◽  
Coating Thickness ◽  
Fiber Surface ◽  
Tio2 Coating ◽  
Experimental Results ◽  
Coating Process ◽  
High Quality ◽  
Tio2 Photocatalysis

To meet the need of optical fiber photoreactor designed by mechanism of TiO2 photocatalysis, nanometer TiO2 was coated on the surface of optical fiber by dipping nude fibers into an Al(H2PO4)3-contained TiO2 slurry. Effects of slurry conditions, including content of TiO2 and addition of Al(H2PO4)3 adhesive, on coating thickness and quality were determined. Coating process, especially the effect of coating times, was also concerned. Based on the experimental results, fitting slurry conditions and process parameters were suggested for obtaining high-quality TiO2 coating on optical fiber surface.

Manufacturing Modeling of Three-Dimensional Resin Injection Pultrusion Process Control Parameters for Polyester/Glass Rovings Composites

2006 ◽  
Vol 129 (1) ◽  
pp. 143-156 ◽  
Author(s):  
A. L. Jeswani ◽  
J. A. Roux
Keyword(s):  
Process Parameters ◽  
Volume Fraction ◽  
Three Dimensional ◽  
Fiber Reinforcement ◽  
Resin Flow ◽  
Molding Process ◽  
Fiber Volume ◽  
Liquid Resin ◽  
Pultrusion Process ◽  
The Impact

Pultrusion, sometimes referred to as continuous resin transfer molding process, is a continuous, cost-effective method for manufacturing composite materials with constant cross sections (such as rod stock, beams, channels, and tubing). The objective of this study is to improve the fiber reinforcement wetout and thus the quality of the pultruded part in the injection pultrusion process. The complete wetout of the dry reinforcement by the liquid resin depends on various design and process parameters. The process parameters modeled in this study are fiber pull speed, fiber volume fraction, and viscosity of the resin. In the present work, a three-dimensional finite volume technique is employed to simulate the liquid resin flow through the fiber reinforcement in the injection pultrusion process. The numerical model simulates the flow of polyester resin through the glass rovings and predicts the impact of the process parameters on wetout, resin pressure field, and resin velocity field. The location of the liquid resin flow front has been predicted for an injection slot as well as for five discrete injection ports.

Optimization of Process Parameters for Detonation Gun Coating Process through Greyrelation Analysis

2014 ◽  
Vol 592-594 ◽  
pp. 636-640
Author(s):  
K.N. Balan ◽  
S. Manimaran ◽  
M.A. Essam Ahamed ◽  
Amaladas John Rajan
Keyword(s):  
Process Parameters ◽  
Spray Coating ◽  
Aviation Industry ◽  
Optimum Process ◽  
Coating Process ◽  
Micro Hardness ◽  
Wear Resistant ◽  
Optimization Of Process Parameters ◽  
Marine Industry ◽  
Detonation Gun

Detonation gun spray coating method (D-Spray) is an effective method of coating process [4]. The surface property of material will be enhanced by deposition of coating powders such as metal oxides and ceramics like aluminium oxides, tungsten carbide, nickel chromium etc. which improves micro hardness, corrosion and wear resistant resistance property. This coating process is applicable in different engineering sectors such as aviation industry, marine industry, biomedical industry etc., In this Experimental study the Process parameter optimization of D-spray coating process with different coating powder was done by Taguchi design of experiment [2] and interrelationships among multiple response was analysed with Grey relation Analysis [2] in order to find the optimized processing conditions and to get higher quality of coating. Micro hardness Wear resistant, Surface roughness are the multiple responses estimated for various combinations of parameters and the optimum process parameters were obtained.

Effect of Plural Spray Coating Process Parameters on Bonding Strength of Polyurea with Steel and Aluminum for Liquid Storage Applications

2020 ◽  
Vol 49 (5) ◽  
pp. 20200061 ◽  
Author(s):  
T. Arunkumar ◽  
G. Anand ◽  
P. Venkatachalam ◽  
M. Anish ◽  
J. Jayaprabakar ◽  
...  
Keyword(s):  
Process Parameters ◽  
Bonding Strength ◽  
Spray Coating ◽  
Coating Process ◽  
Liquid Storage

scholarly journals Improvement of the Mechanical Properties of Hibiscus Esculentus (Okra) Fiber Reinforced Polymer Composite

2019 ◽  
pp. 249-259
Author(s):  
D. I. Chukwuma ◽  
E. N. Ikezue ◽  
E. O. Onu ◽  
J. O. Ezeugo
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Fiber Length ◽  
Natural Fiber ◽  
Volume Fraction ◽  
Fiber Surface ◽  
Fiber Volume ◽  
The Matrix ◽  
Two Parameters ◽  
Okra Fiber

Natural fiber and their composites are the emerging trends in material science. They are speedily gaining grounds in the replacement of synthetic reinforcements. This is due to their low density, high specific mechanical strength, ultimate availability and disposability and less processing requirements. Most plant based fibers have become centers of research. This work is based on Okra fiber. Okra fiber was used as reinforcement in vinyl ester polymer matrix. Okra fiber was chemically treated using NaOH to clean fiber surface, modify the surface to increase the surface roughness and in general enhance bond strength between fiber and matrix. Reinforcement of the matrix using Okra fiber increases mechanical properties of the composite. But for optimal result, certain parameters were considered and varied. The two parameters considered were: fiber length, and proportion or volume fraction. Different variations of fiber length considered were: 10mm, 30mm and 50mm while the different fiber volume fractions considered are 10%, 30% and 50%. This work has analyzed how these parameters can be best combined for optimum values of tensile properties of the composite. The tensile strength of composite was highest at fiber length of 50mm and volume fraction of 10% at ultimate tensile strength of 214MPa.

scholarly journals Influence of spray-coating process parameters on the release of TiO2 particles for the production of antibacterial textile

NanoImpact ◽  
2020 ◽  
Vol 19 ◽  
pp. 100245
Author(s):  
Simona Ortelli ◽  
Franco Belosi ◽  
Rossella Bengalli ◽  
Fabrizio Ravegnani ◽  
Carlo Baldisserri ◽  
...  
Keyword(s):  
Process Parameters ◽  
Spray Coating ◽  
Coating Process ◽  
Tio2 Particles ◽  
Antibacterial Textile

The Effect of Induced Vibration on Thermoplastic Composite System

2014 ◽  
Vol 704 ◽  
pp. 39-47
Author(s):  
Mohammed Al Ghamedi ◽  
Lidvin Kjerengtroen ◽  
Jon J. Kellar ◽  
William M. Cross ◽  
Selvin P. Thomas
Keyword(s):  
Energy Absorption ◽  
Strain Energy ◽  
Volume Fraction ◽  
Low Cost ◽  
High Viscosity ◽  
Processing Technique ◽  
Thermoplastic Composite ◽  
Processing Temperature ◽  
Fiber Volume ◽  
High Level

Thermoplastic composite manufacturing is often difficult due to high viscosity of the matrix materials. Coupling a high level of mechanical properties with simple, low-cost processing technique is a difficult subject, but an important task for any state-of-the-art impregnation processes. In this paper, Thermoplastic Prepreg Fabrication Technology is utilized to prepare thermoplastic tapes and the technology's effect on strain energy absorption was investigated. The tape was prepared under three categories: first, with induced vibration and no fiber preheat (NV), second, without vibration and fiber preheat (HN) and last, with both fiber preheat and vibration (HV). For the purpose of comparison, all other variables such as pulling speed, fiber tension, fiber preheat and processing temperature were kept constant. The HV category showed improvement in the strain energy absorption by 10 and 23% when compared to HN and NV, respectively. In addition, HV had better wetting, fiber spread and dispersion. Fiber preheating is important as it worked well with vibration possibly due to good fiber spread on the HV category (widest tape). Also, HV had the least fiber volume fraction as it takes more matrix volume when exiting the die plate.

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