Advanced Powder Technology最新文献_第4页

Study on inhibition of titanium powder explosion by melamine polyphosphate/iron modified carbon nanotube composite powder

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-02-25 DOI: 10.1016/j.apt.2025.104833

Yujian Zhu , Xiangbao Meng , Xiaozhen Yu , Zhao Qin , Jihe Chen , Jianxu Ding

{"title":"Study on inhibition of titanium powder explosion by melamine polyphosphate/iron modified carbon nanotube composite powder","authors":"Yujian Zhu , Xiangbao Meng , Xiaozhen Yu , Zhao Qin , Jihe Chen , Jianxu Ding","doi":"10.1016/j.apt.2025.104833","DOIUrl":"10.1016/j.apt.2025.104833","url":null,"abstract":"<div><div>In order to effectively inhibit the explosion of titanium powder, MPP-Fe@CNT mesoporous composite powder was prepared using carbon nanotubes as the carrier. Dust explosion experiment system and Hartmann experiment system were used to test the inhibition effect of MPP-Fe@CNT powder on the explosion pressure and explosion flame of titanium powder, and the explosion products were analyzed by FTIR and XPS experimental methods. The results show that when the proportion of MPP-Fe@CNT reaches 50 %, the maximum explosion pressure of titanium powder decreases from 0.5476 MPa to 0.2421 MPa, and the flame propagation distance decreases to 227.39 mm, which indicates that MPP-Fe@CNT has obvious inhibition effect on the explosion of titanium powder. MPP-Fe@CNT powder absorbs a lot of heat in the thermal decomposition process, and the released gas dilutes the concentration of oxygen. Chemical reactions of phosphorus-containing compounds consume free radicals and inhibit the explosion of titanium powder. Under the catalysis of iron, the polymer generated by decomposition and phosphorus-containing substances quickly form a dense carbonized film on the surface of titanium powder, blocking heat and oxygen, further limiting the explosive reaction, and having a good physicochemical synergistic inhibition effect to achieve a good effect of inhibiting the explosion of titanium powder.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 4","pages":"Article 104833"},"PeriodicalIF":4.2,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143478784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inside Front Cover (Aims & Scope, Editors)

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-02-24 DOI: 10.1016/S0921-8831(25)00043-3

引用次数: 0

Full title (Editorial Board Members)

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-02-24 DOI: 10.1016/S0921-8831(25)00044-5

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Solventless-mixing particle coating using a high shear mixer for preparing coated pellets using dry methyl methacrylate and diethylaminoethyl methacrylate copolymer latex

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-02-21 DOI: 10.1016/j.apt.2025.104829

Keita Kondo, Shoko Mata, Toshiyuki Niwa

{"title":"Solventless-mixing particle coating using a high shear mixer for preparing coated pellets using dry methyl methacrylate and diethylaminoethyl methacrylate copolymer latex","authors":"Keita Kondo, Shoko Mata, Toshiyuki Niwa","doi":"10.1016/j.apt.2025.104829","DOIUrl":"10.1016/j.apt.2025.104829","url":null,"abstract":"<div><div>The aim of this study was to investigate the feasibility of coated pellet formulation by high shear mixing of drug pellets and polymer particles without solvent or heat. First, drug-layered pellets were prepared by high shear mixing of drug crystals and sugar-cellulose pellets. Second, aqueous methyl methacrylate and diethylaminoethyl methacrylate copolymer latex was solidified by freeze drying to produce dry latex comprising colloidal polymer. Finally, the resulting pellets and latex were exposed to high shear mixing, and the obtained coated pellets were characterized. The freeze-dried latex exhibited high coating performance due to its fragile characteristics, which were due to the lack of close contacts between the colloids. This latex was easily pulverized by high shear mixing with the pellets, and the resulting fragments were then deposited on the surface of the pellets. We examined additional coatings: after high shear mixing of the drug-layered pellets and latex particles, fresh latex was added and mixed with the coated pellets. This process provided coated pellets with thick and dense polymer layers, which could suppress initial drug release after annealed at 80 °C for 6 h. The dissolution was dependent on the coating thickness, which was determined by controlling the amount of coated polymer.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 4","pages":"Article 104829"},"PeriodicalIF":4.2,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modulating hygroscopicity and compression performance in chewable mannitol-xylitol tablets: Effects of relative humidity and magnesium stearate

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-02-21 DOI: 10.1016/j.apt.2025.104816

Yu Zhang , Hongyue Liu , Ge Zhong , Junmeng Xu , Jia Zeng , Fan Zhao , Jinru Hu , Chun Qiao , Li Qin , Ruofei Du

{"title":"Modulating hygroscopicity and compression performance in chewable mannitol-xylitol tablets: Effects of relative humidity and magnesium stearate","authors":"Yu Zhang , Hongyue Liu , Ge Zhong , Junmeng Xu , Jia Zeng , Fan Zhao , Jinru Hu , Chun Qiao , Li Qin , Ruofei Du","doi":"10.1016/j.apt.2025.104816","DOIUrl":"10.1016/j.apt.2025.104816","url":null,"abstract":"<div><div>This study aims to investigate the effects of the relative humidity and formulation ratio on the hygroscopicity, tableting performance, and physical stability of polyols (mannitol and xylitol) as fillers in chewable tablets. To address the issues of hygroscopicity and sticking during tableting of chewable tablets containing polyol fillers, a systematic analysis was conducted by adjusting the ratio of mannitol and xylitol, and adding magnesium stearate (Mgst) as lubricant. The study investigated changes in hygroscopicity of the powder blends, tablet compressive force (F), and increment in ejection force (ΔEF) under varying humidity and formulation conditions. The porosity, tensile strength, and disintegration time of the tablets were also measured and analyzed to investigate the effects of humidity and formulation factors on tablet quality. The results indicate that increasing the mannitol content significantly reduces the hygroscopicity and moisture content of the powder blends. Higher levels of Mgst and mannitol improve the sticking issues in compression. However, an increase in mannitol content may decrease tablet porosity, leading to a longer disintegration time. Under high humidity conditions, increasing the amounts of mannitol can reduce the polymorphic transformation tendency of xylitol and enhance the hardness stability of the chewable tablets. This study reveals the significant effects of relative humidity and the mannitol-xylitol ratio on powder hygroscopicity, compaction performance, and tablet quality, providing a theoretical basis for optimizing formulations containing polyol fillers under controlled humidity conditions. The findings offer important references for adjusting process parameters in actual production, with particular guidance on improving tablet physical stability, anti-sticking performance, and disintegration control.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 4","pages":"Article 104816"},"PeriodicalIF":4.2,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The establishment and application of a novel spherical sensor based on three-axis accelerometer

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-02-20 DOI: 10.1016/j.apt.2025.104830

Hengjun Li , Shaojian Ma , Xiaojing Yang , Pengyan Zhu , Dingzheng Wang , Yuan Li , Jinlin Yang

引用次数: 0

Study on the surface modification and activation mechanism of lime-depressed pyrite by Cu(II) species

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-02-20 DOI: 10.1016/j.apt.2025.104831

Liang Wang , Yu Chen , Bihan Wei , Han Wang , Peilun Shen , Dianwen Liu

{"title":"Study on the surface modification and activation mechanism of lime-depressed pyrite by Cu(II) species","authors":"Liang Wang , Yu Chen , Bihan Wei , Han Wang , Peilun Shen , Dianwen Liu","doi":"10.1016/j.apt.2025.104831","DOIUrl":"10.1016/j.apt.2025.104831","url":null,"abstract":"<div><div>Pyrite is frequently encountered in conjunction with other sulfide minerals and is commonly subjected to depression by lime during mineral processing, which aim to isolate and concentrate precious minerals. In light of the continuous exhaustion of Earth’s mineral wealth, the retrieval of pyrite that has been hindered by lime deposits has emerged as a pressing concern and a top priority. This study explored the use of Cu(II) to activate lime-depressed pyrite. Scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), time-of-flight secondary ion mass spectrometry (ToF-SIMS), X-ray photoelectron spectroscopy (XPS), ultraviolet–visible (UV–vis) spectrophotometers, and contact angle tests were utilized to reveal the activation mechanism of Cu(II) on lime-depressed pyrite. These techniques were employed to analyze surface morphology and characteristics, spectral characteristics, adsorption capacity for collectors, and surface hydrophobicity. The surface morphology and spectral characteristics analyze indicated that the addition of Cu(II) led to the dissolution of hydroxyl and sulfate species on lime-depressed surfaces, and results in the formation of new copper sulfide and Fe-O-Cu species. These newly generated copper species enhanced the adsorption capacity of collectors on the pyrite surfaces, thus improving the hydrophobicity of pyrite. After Cu(II) treatment, the lime-depressed pyrite exhibited improved recoverability through flotation, ultimately achieving a peak recovery of 81.50%.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 4","pages":"Article 104831"},"PeriodicalIF":4.2,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxidation and laser ignition characteristics of Mn, Mo, Ta, and W powders in oxygen-rich environments

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-02-19 DOI: 10.1016/j.apt.2025.104828

Xiangrui Zou , Chao Wang , Wenju Yang , Chaoqi Xu , Rui Xue

{"title":"Oxidation and laser ignition characteristics of Mn, Mo, Ta, and W powders in oxygen-rich environments","authors":"Xiangrui Zou , Chao Wang , Wenju Yang , Chaoqi Xu , Rui Xue","doi":"10.1016/j.apt.2025.104828","DOIUrl":"10.1016/j.apt.2025.104828","url":null,"abstract":"<div><div>Manganese (Mn), molybdenum (Mo), tantalum (Ta), and tungsten (W) powders offer exceptional properties such as high strength, combustibility, and substantial volumetric combustion enthalpy, making them valuable for aerospace and industrial applications. This study investigates their oxidation and burning characteristics through thermogravimetric-differential scanning calorimetry and high-pressure combustion tests. Onset oxidation temperatures were determined as 340.23 °C, 475.01 °C, 523.90 °C, and 535.70 °C for Mn, Mo, Ta, and W, respectively. Mn forms Mn<sub>2</sub>O<sub>3</sub> and Mn<sub>3</sub>O<sub>4</sub>, with combustion products exhibiting surface holes as substance migration channels. Mo and W form volatile oxides (MoO<sub>3</sub>, WO<sub>3</sub>) sublimating above 800 °C and 1200 °C, respectively, while Ta forms stable Ta<sub>2</sub>O<sub>5</sub>. Luminous intensity measurements quantified combustion evolution, revealing ignition delay times of 64 ms, 77.5 ms, 97.8 ms, and 128 ms for Mn, Mo, Ta, and W under 0.5 MPa oxygen, with Mn and Ta showing intense flames and faster reaction rates. Scanning electron microscope and X-ray diffraction analyses identified Mn<sub>3</sub>O<sub>4</sub>, MoO<sub>3</sub>, Ta<sub>2</sub>O<sub>5</sub>, and WO<sub>3</sub> as primary combustion products. This study provides insights into the oxidation and combustion behaviors of high-density metal powders, supporting improved safety in powder metallurgy, 3D printing, and energetic material design.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 4","pages":"Article 104828"},"PeriodicalIF":4.2,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Milling-based extraction and characterization of Bombyx mori silk glands and fibroin powder for biomaterial use

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-02-16 DOI: 10.1016/j.apt.2025.104820

Norihiro Yoshida , Mayumi Tsukada , Masayuki Horio , Akio Nonaka , Akira Nonaka , I. Wuled Lenggoro

引用次数: 0

Particle tracking velocimetry study of wet particle flow in a pseudo two-dimensional fluidized bed

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-02-13 DOI: 10.1016/j.apt.2025.104819

Zhiyang Ma , Yi Xu , Qiuya Tu , Haigang Wang

{"title":"Particle tracking velocimetry study of wet particle flow in a pseudo two-dimensional fluidized bed","authors":"Zhiyang Ma , Yi Xu , Qiuya Tu , Haigang Wang","doi":"10.1016/j.apt.2025.104819","DOIUrl":"10.1016/j.apt.2025.104819","url":null,"abstract":"<div><div>In particle preparation, likes drying, coating and granulation, the flow characteristics of wet particles in the fluidized bed are extremely complex due to the effect of water content. It is essential to investigate the flow characteristics of wet particles for optimizing process efficiency and ensure the end-point product quality. In this research, a high-speed camera was employed to conduct experimental investigation for wet particles flow within a pseudo two-dimensional fluidized bed. The flow dynamics of wet particles under different water contents and different inlet gas velocities were investigated. The particle tracking velocimetry (PTV) measurement was explored to observe the particle movement in specific regions, including particle velocity distribution and particle concentration. A digital imaging method, i.e. Voronoi method, was utilized to address particle allocation challenges, providing a foundation for calculating intricate parameters such as solid-phase flow field, granular temperature and solid volume fraction. These parameters were calculated based on the essential information derived from the Lagrangian trajectories of particles, which enriched the understanding of complex interactions in the wet particle flow dynamics system.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 4","pages":"Article 104819"},"PeriodicalIF":4.2,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0