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

Cao, Zheng; Lu, Gang; Gao, Hongxin; Xue, Zhiyu; Luo, Keming; Wang, Kailun; Cheng, Jiping; Guan, Qingbao; Liu, Chunlin; Luo, Ming

doi:10.1021/acsomega.1c00255

Cited by 15 publications

(11 citation statements)

References 48 publications

(59 reference statements)

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“…Higher MoS 2 content increases the porosity of the composite, inhibits dispersion, and leads to partial aggregation. [ 42 ] The weakened interfacial bond between the MoS 2 and the PP matrix reduces the strength and toughness of the composite.…”

Section: Resultsmentioning

confidence: 99%

Molybdenum disulfide of modified in situ as a nanofiller for enhanced mechanical properties and thermal properties of polypropylene composites

Dong

Liu²,

Li³

et al. 2022

Polymer Composites

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Few-layer molybdenum disulfide (MoS 2 ) was prepared by liquid phase exfoliation with in-situ modification as a nanofiller for polypropylene (PP). Scanning and transmission electron microscopies (SEM, TEM) showed uniform dispersion and excellent adhesion of MoS 2 within the PP matrix. When MoS 2 was centrifuged at 1000 rpm, the mechanical properties of the composite were greatly improved by adding only 0.5 wt.% of MoS 2 . The yield strength, bending modulus, and impact strength increased by 2.3%, 8.9%, and 44.03%, respectively. X-ray diffraction (XRD) and differential scanning calorimetry (DSC) showed that the enhanced mechanical properties of the composites were related to PP crystallographic transformation. Thermogravimetric analysis (TGA) showed that the incorporation of 2 wt.% MoS 2 increased the maximum weight-loss temperature of the composites by approximately 30 C. The mechanisms for increasing thermal stability have been thoroughly demonstrated by band energy analysis. MoS 2 nanosheets have high aspect ratios and strong insulation with a change in band gap width compared to bulk MoS 2 , which is resulting in the stronger interactions at the MoS 2 /PP substrate interface. Furthermore, due to the outstanding carrier for rigid and thermally stable materials, MoS 2 composites displayed excellent mechanical and thermal properties. In addition, unlike PP, the melt flow rate (MFR) of composite materials is more conducive to downstream product processing. This will further promote the application scope of MoS 2 /PP composites.

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Section: Resultsmentioning

confidence: 99%

Molybdenum disulfide of modified in situ as a nanofiller for enhanced mechanical properties and thermal properties of polypropylene composites

Dong

Liu²,

Li³

et al. 2022

Polymer Composites

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“…In laser-illuminated regions, the photoconductive layer conducts. This allows the electrostatic charge to move and creates an electric charge pattern on the surface [7][8][9][10][11][12]. This sequence is similar to that used in photocopiers, except that the pattern in the exposure step is obtained from projection of an image of the text or graphics to be copied in photocopiers.…”

Section: Laser Printersmentioning

confidence: 99%

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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“…Therefore, current research is limited to forming simple laser marking patterns on general plastic surfaces. [36][37][38] In addition, polymers have the characteristic of uneven heat transfer. Due to the fact that polymers are usually insulators, the transfer of heat within the material is slower, which may lead to local overheating and the formation of temperature gradients.…”

Section: Introductionmentioning

confidence: 99%

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

Cited by 15 publications

References 48 publications

Molybdenum disulfide of modified in situ as a nanofiller for enhanced mechanical properties and thermal properties of polypropylene composites

Molybdenum disulfide of modified in situ as a nanofiller for enhanced mechanical properties and thermal properties of polypropylene composites

Experimental Analysis on Polypropylene Moulded Part for Performance of Laser Printing

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

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