scholarly journals Studying the Influence of Temperatures, Used for Processing ABS, PA 6.6 and POM, on Certain Electrical Properties, when Injection Moulding Items for the Automotive Industry, by Methods Employed for Determining Relative Permittivity and the Dielectric Dissipation Factor

2017 ◽  
Vol 54 (2) ◽  
pp. 274-280
Author(s):  
Ovidiu Constantin Novac ◽  
Gheorghe Radu Emil Maries ◽  
Dan Chira ◽  
Mihaela Novac
Keyword(s):  
Electrical Properties ◽  
Automotive Industry ◽  
Temperature Rise ◽  
Relative Permittivity ◽  
Acrylonitrile Butadiene Styrene ◽  
Dissipation Factor ◽  
Polyamide 6.6 ◽  
Dielectric Dissipation Factor ◽  
Butadiene Styrene

This paper analyses the influence of processing temperatures of acrylonitrile butadiene styrene (ABS), polyamide 6.6 (PA 6.6) and polyoxymethylene (POM) on some electrical properties when injecting items used in the automotive industry. The ABS specimens were made at the following injection temperatures: 220, 230, 240 and 250�C. The PA 6.6 specimens were made at the following injection temperatures: 280, 290, 300, 310 and 320�C. The POM specimens were made at the following injection temperatures: 180, 190, 200, and 210�C. The determination of electrical properties were carried out using the methods for determining the relative permittivity and the dielectric dissipation factor using zero method with Schering bridge. It was found in the three polymers analysed that the temperature rise processing by injection leads to insignificant changes in relative permittivity (er) and dielectric dissipation factor (tgd).

scholarly journals Study Concerning the Influence of the Grinding Percentage on Some Electrical Properties of PA 6.6, POM and ABS by Methods for Determining Relative Permittivity and the Dielectric Dissipation Factor

2017 ◽  
Vol 54 (3) ◽  
pp. 453-460 ◽  
Author(s):  
Ovidiu Constantin Novac ◽  
Gheorghe Radu Emil Maries ◽  
Dan Chira ◽  
Mihaela Novac
Keyword(s):  
Electrical Properties ◽  
Relative Permittivity ◽  
Acrylonitrile Butadiene Styrene ◽  
Dissipation Factor ◽  
Measurement Frequency ◽  
New Material ◽  
Polyamide 6.6 ◽  
Dielectric Dissipation Factor ◽  
Butadiene Styrene

This paper presents the influence of the grinding percentage on some electrical properties, when the process of injection is used in the production of technical commodities, made of polyamide 6.6 (PA 6.6), polyoxymethylene (POM) and acrylonitrile butadiene styrene (ABS), for different industries. The specimens produced had the following compositions: new material 100%, new material 80% + grinding 20%, new material 60% + grinding 40%, new material 40% + grinding 60%, new material 20% + grinding 80% and 100% grinding. The measurement of the electrical properties was carried out using the methods for the determination of relative permittivity and of the dielectric dissipation factor, with the method of zero by Schering bridge. It was found that increasing the percentage of grinding in samples, from 0% to 100%, determined a slight increase in the values of relative permittivity at all three polymers tested and the increase of measurement frequencies for acrylonitrile butadiene styrene and polyoxymethylene led to insignificant changes in the values of relative permittivity, while in the case of polyamide, increasing the measurement frequency led to a slight decrease in the values of relative permittivity. It was also found that increasing the proportion of grinding in the specimens, from 0% to 100%, determined a slight increase in the values of the dielectric dissipation factor in the case of polyamide and polyoxymethylene, while in the case of acrylonitrile butadiene styrene increasing the percentage of grinding in the samples resulted in insignificant changes. The increase in the measurement frequencies for the three tested polymers resulted in a decrease in the values of the dielectric dissipation factor.

Sliding Wear Analysis of a Metallic Coating on ABS Plastic Substrate

2016 ◽  
Vol 852 ◽  
pp. 381-387
Author(s):  
Shrutee Nigam ◽  
Saroj Kumar Patel ◽  
Siba Sankar Mahapatra
Keyword(s):  
Automotive Industry ◽  
Textile Industry ◽  
Sliding Wear ◽  
Acrylonitrile Butadiene Styrene ◽  
Extensive Study ◽  
Metallic Coating ◽  
Plastic Substrate ◽  
Arc Spray ◽  
Wear Analysis ◽  
Butadiene Styrene

In the recent times efforts have been made to combine plastic and metal, and to bring forth a product that has the goodness of both. With metallization the plastic gains the properties like thermal conductivity, strength and hardness. Methods discovered are usually costly, complex and environment unfriendly. Metallization of plastics has opened the door for its use in various fields such as electronic industry, textile industry and automotive industry. Metallic coating are also desirable in providing finish on the items like cell phones and laptop cases. The electric arc spray approach has been used to deposit copper on the acrylonitrile-butadiene-styrene (ABS). This work makes an extensive study to analyze the factors that are significantly affecting the wear nature of the deposited coating and to obtain an optimal combination of process parameters that results in a coating which adherant enough and has the lowest wear rate.

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