scholarly journals Analytical Study on Pulsed-Laser Processing for Acrylonitrile Butadiene Styrene/ PolyVinyl Chloride

2019 ◽  
Vol 26 (1) ◽  
pp. 77-82 ◽  
Author(s):  
Chang-Wei XIONG ◽  
Si-Li FAN ◽  
Ching-Yen HO

This study developed a model involving the energy balance and decomposition at the ablated interface due to the heat transport, optical decomposition and activation energy in Acrylonitrile Butadiene Styrene/PolyVinyl Chloride (ABS/PVC). The prediction for ablation depth obtained from this study is compared with the available experimental data. The predicted results agree with the measured data. The effects of laser processing parameters, optical and thermal properties of ABS/PVC on the variation of the laser-ablated depth with the laser fluences are also discussed. The results validate that the pulsed-laser ablation rate at the initial short period is dominated by optical penetration absorption for laser and is linearly proportional to the logarithm of the laser fluence by a ratio factor “optical absorption length” (i.e., the ablation rate follows Beer’s law at the initial short period).

2012 ◽  
Vol 51 (4) ◽  
pp. 413-418 ◽  
Author(s):  
Mahmood Hemmati ◽  
Abdolhosein Fereidoon ◽  
Homeyra Shariatpanahi ◽  
Morteza Ghorbanzadeh Ahangari ◽  
Amir Narimani

2018 ◽  
Vol 7 (4) ◽  
pp. 104
Author(s):  
Gailan I. Hassan ◽  
Younis Kh. Khdir

This study deals with the Rotary Friction Welding, (RFW) as a variation of friction welding in which the energy required to make the weld is supplied primarily by the stored rotational kinetic energy of the welding machine. The mechanical energy generated in overcoming friction is continuously transformed into heat. In most circumstances the thermal energy generated is regarded as undesirable, but under controlled conditions it can be used to join materials, as in the case of rotary friction welding. In this paper, similar and dissimilar joints of Acrylonitrile butadiene styrene (ABS) (chemical formula (C8H8)x· (C4H6)y· (C3H3N)z) and Polyethylene (PE) or polyethene or poly(methylene)) are studied. The effects of different rotational rates, plunge depths, and traverse speeds on the microstructure and tensile strength of joints were investigated. Some defects such as pores and cracks were found at inappropriate processing parameters. The tensile test was carried out as the mechanical properties of joints. Different significant parameters were discussed. The maximal and minimal tensile strength indicated and evaluated.


2021 ◽  
Vol 6 (4) ◽  
pp. 291-298
Author(s):  
Karina R. Khuziakhmetova ◽  
Lyailya A. Abdrakhmanova ◽  
Rashit K. Nizamov ◽  
Vadim G. Khozin

The paper deals with filling polyvinyl chloride (PVC) compositions modified with acrylonitrile-butadiene-styrene (ABS) in a wide concentration range (per hundredth of PVC resin (phr) 10–20 phr ABS) with short-fiber basalt fiber, intended for production of profile mounded products of various functional purposes. The introduction of ABS into PVC compositions makes it easier to process the material, and improves the impact toughness, which for rigid PVC products is an important factor since it expands the areas of their application. However, as a rule, polymer-polymer blends are characterized by low mechanical properties under compression, tension and bending, resulting from the formation of two-phase morphology, which is often heterogeneous. To increase stiffness and strength, 7 phr of short-fiber basalt fiber was introduced into their composition. Experimental samples were made by extrusion in the form of flat profiles. Filling with short-fiber basalt fiber resulted in an increase in the bending strength of PVC specimens over the entire concentration range with an optimum in the region of 10–20 phr ABS, as compared to unfilled blended polymer compositions. The method of energy dispersion analysis established that, depending on the ABS content in the mixture, the interaction of the polymer (PVC) with the filler (fiber) is observed either at the polymer-filler boundary or through the boundary layer of the elastomer.


2011 ◽  
Vol 124 (2) ◽  
pp. 943-950 ◽  
Author(s):  
Sarawut Rimdusit ◽  
Dolhathai Atthakorn ◽  
Siriporn Damrongsakkul ◽  
Duangporn Saramas ◽  
Sunan Tiptipakorn

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 611
Author(s):  
Qiuling Wen ◽  
Xinyu Wei ◽  
Pengcheng Zhang ◽  
Jing Lu ◽  
Feng Jiang ◽  
...  

The nanohole arrays on the silicon substrate can effectively enhance the light absorption in thin film silicon solar cells. In order to optimize the solar energy absorption, polystyrene microspheres with diameters of 1 μm are used to assist picosecond laser with a wavelength of 1064 nm to fabricate nanohole arrays on silicon substrate. The experimental results show that the morphology and size of the silicon nanoholes strongly depend on the laser fluence. At 1.19–1.59 J/cm2 laser fluences, well-ordered arrays of nanoholes were fabricated on silicon substrate, with diameters domain from 250 to 549 nm and depths ranging from 60 to 99 nm. However, large amounts of sputtered nanoparticles appeared around the silicon nanoholes. To improve the surface morphology of silicon nanoholes, a nanolayered gold coating is applied on silicon surface to assist laser processing. The results show that, for gold-coated silicon substrate, sputtered nanoparticles around the nanoholes are almost invisible and the cross-sectional profiles of the nanoholes are smoother. Moreover, the ablation rate of the nanoholes on the gold-coated silicon substrate have increased compared to that of the nanoholes on the uncoated one. This simple method allows fast fabrication of well-ordered nanoholes on silicon substrate without sputtered nanoparticles and with smooth inner surface.


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