Laser irradiation method to prepare polyethylene porous fiber membrane with ultrahigh xylene gas filtration capacity

Cheng, Jiping; You, Xinghua; Li, Hao; Zhou, Jun; Lin, Zhixiong; Wu, Dun; Liu, Chunlin; Cao, Zheng; Pu, Hongting

doi:10.1016/j.jhazmat.2020.124395

Cited by 13 publications

(8 citation statements)

References 34 publications

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“…There are four basic types of injection moulding equipment according to the type of screw or plunger. [6] Four types of injection moulding machines. [6] 1.…”

Section: Injection Moulding Machine Typementioning

confidence: 99%

“…Two to three tonnes of pressure are typically applied to polystyrene for each inch of projected area of the work-piece and runner system. [6] To preplastify the plastic granules, Piston-type preplastifying machine uses a torpedo ram heater. The fluid plastic is pushed into a holding chamber after the melt stage until it is ready to be forced into the mould.…”

Section: Injection Moulding Machine Typementioning

confidence: 99%

“…This enables a larger work-piece with a larger projected area. [6] Screw-Type preplastifying machine is an extruder that is used to plasticize plastic material. The pellets are fed forward by the turning screw to the heated interior surface of the extruder barrel.…”

Section: Injection Moulding Machine Typementioning

confidence: 99%

“…The molten, plasticized material exits the extruder and enters a holding chamber before being forced into the mould or die by the injection plunger. The use of a screw provides the following benefits: improved plastic melt mixing and shear action, the ability to run a wider range of stiffer flow heat sensitive materials, colour changes can be handled in less time, and fewer stresses are obtained in the moulded part [6].…”

Section: Injection Moulding Machine Typementioning

confidence: 99%

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Experimental Analysis on Polypropylene Moulded Part for Performance of Laser Printing

Dumanwad¹,

Kumbhalkar²,

Singh³

2023

3C Tecnología

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Now a day plastic injection molding is widely used process to manufacture engineering product and consumer goods typically thermoplastic is combined with rubber or another thermoplastic like RM master batch is used to add color to the Molded part also the laser marking on plastic part and their printing cut, faint issue observed. The aim of the study was to Optimize the injection parameters and processing condition for the laser performance on polypropylene part. To achieve enhanced dark laser marking on polypropylene, the process parameter of plastic injection molding and the Raw material master batch mixing parameter successfully prepared this laser–sensitive composite consisted of a high Laser induced carbonization rate.in plastic injection molding use of raw material and mixing of master batch is considerable factor for faint laser marking. Because of laser does not respond well on carbonization added material, it was evident that master batch having the carbon properties is much more responsible for faint laser marking issue on polypropylene material part. The effect of laser beam interaction (Nd: YVO4) with selected operational parameters on the Quality of graphical features obtained on the surface of polypropylene-molded pieces with different surface Textures (variable parameters of the surface layer). Polypropylene test specimens were injection molded using original injection molds Products with variable end parameters determined by the position of the cavity circle can be identified. The layout of the laser function, the beneficiary texture of the molded piece, the molded color and the support of the marking piece allow the evaluation of the graphic symbol performance by means of laser marking of the type of master back in their rendering relationship. Marked evaluation criteria were adopted for the project.

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“…There are four basic types of injection moulding equipment according to the type of screw or plunger. [6] Four types of injection moulding machines. [6] 1.…”

Section: Injection Moulding Machine Typementioning

confidence: 99%

Section: Injection Moulding Machine Typementioning

confidence: 99%

Section: Injection Moulding Machine Typementioning

confidence: 99%

Section: Injection Moulding Machine Typementioning

confidence: 99%

See 2 more Smart Citations

Experimental Analysis on Polypropylene Moulded Part for Performance of Laser Printing

Dumanwad¹,

Kumbhalkar²,

Singh³

2023

3C Tecnología

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“…Laser marking is characterized by noncontact processing. The laser with a wavelength of 1064 nm is a more commonly used laser in the industry and is suitable for materials such as metal, ceramics, wood, and plastic. − Compared with the easy carbonization and high char residue features of polycarbonate and polystyrene, it is rather difficult to perform laser marking with PP itself due to the poor absorption of the near-infrared laser energy of the 1064 nm wavelength. Usually, the method of adding laser marking additives can effectively improve the laser marking performance of PP.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Laser Marking Properties of Poly(propylene)/Molybdenum Sulfide Composite Materials

Cao

Gao

et al. 2021

ACS Omega

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In this study, using molybdenum sulfide (MoS 2 ) as laser-sensitive particles and poly(propylene) (PP) as the matrix resin, laser-markable PP/MoS 2 composite materials with different MoS 2 contents ranging from 0.005 to 0.2% were prepared by melt-blending. A comprehensive analysis of the laser marking performance of PP/MoS 2 composites was carried out by controlling the content of laser additives, laser current intensity, and the scanning speed of laser marking. The color difference test shows that the best laser marking performance of the composite can be obtained at the MoS 2 content of 0.02 wt %. The surface morphology of the PP/MoS 2 composite material was observed after laser marking using a metallographic microscope, an optical microscope, and a scanning electron microscope (SEM). During the laser marking process, the laser energy was absorbed and converted into heat energy to cause high-temperature melting, pyrolysis, and carbonization of PP on the surface of the PP/MoS 2 composite material. The black marking from carbonized materials was formed in contrast to the white matrix. Using X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and Raman spectroscopy, the composite materials before and after laser marking were tested and characterized. The PP/MoS 2 composite material was pyrolyzed to form amorphous carbonized materials. The effect of the laser-sensitive MoS 2 additive on the mechanical properties of composite materials was investigated. The results show that the PP/MoS 2 composite has the best laser marking property when the MoS 2 loading content is 0.02 wt %, the laser marking current intensity is 11 A, and the laser marking speed is 800 mm/s, leading to a clear and high-contrast marking pattern.

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Design of High‐Performance Bilayer Solar Evaporator Using Graphene‐Coated Bamboo Prepared by Near‐Infrared Laser‐Induced Carbonization of Polystyrene

Cheng,

Tang,

Wang

et al. 2023

Adv Materials Technologies

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Solar seawater evaporation is a sustainable seawater desalination technology. However, how to convert low‐cost waste general plastics into highly efficient photothermal materials remains a challenge. By using the idea of “near‐infrared laser‐induced carbonization” at room temperature and in air atmosphere, polystyrene (PS) can be easily converted into graphene. Bismuth oxide (Bi2O3) catalyst is proven to efficiently convert laser energy into thermal energy and transmit it to the surrounding PS matrix, promoting carbonization. On this basis, by adjusting the catalyst content and the laser energy density per unit area, laser‐induced graphene (LIG) materials with high specific surface area, fast water transport, and high solar energy absorption efficiency can be obtained. Furthermore, the LIG materials are coated on the surface of natural bamboo with a capillary structure. This bilayer evaporation device has an evaporation rate of 1.51 kg m−2 h−1 and an energy conversion efficiency of 87.1% under irradiation of 1 sun. This work not only reveals the possibility of preparing high‐value‐added graphene materials from waste general‐purpose plastics, but also proves the application prospects of LIG materials in the field of solar seawater evaporation. This will provide a feasible approach for promoting the development of carbonization of waste general plastics.

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Laser irradiation method to prepare polyethylene porous fiber membrane with ultrahigh xylene gas filtration capacity

Cited by 13 publications

References 34 publications

Experimental Analysis on Polypropylene Moulded Part for Performance of Laser Printing

Experimental Analysis on Polypropylene Moulded Part for Performance of Laser Printing

Preparation and Laser Marking Properties of Poly(propylene)/Molybdenum Sulfide Composite Materials

Design of High‐Performance Bilayer Solar Evaporator Using Graphene‐Coated Bamboo Prepared by Near‐Infrared Laser‐Induced Carbonization of Polystyrene

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