行星式球磨仪 PM 200
专业报道 (11)
Consistent Milling on a Nano Scale
Planetary ball mills are helping scientists and engineers advance nanotechnology by providing a consistent way to produce nanoscale powders.
Green Chemistry in the Lab
Mechanochemistry is a very effective method to carry out syntheses without solvents and by-products. The technical literature describes a great number of reactions where a conversion of 100% is achieved. A precondition for the establishment of mechanochemistry in the industrial sector is the availability of suitable laboratory mills. A decisive factor is that – similar to conventional preparative chemistry – ambient parameters such as pressure and temperature can be documented and monitored. The Planetary Ball Mills and Mixer Mills from Retsch fulfill these requirements.
Nano particles with a huge effect
Scientists have been studying nano particles (extremely small particles of less than 100 nanometers in diameter) for many years. On the basis of nano particles, new and innovative properties are developed, e. g. semiconducting or surface properties, such as the lotus effect, which open up possibilities previously unknown. There are various methods to produce nano particles. The “bottom up” technique involves synthesizing the particles from atoms and molecules. With the “top down” method, the particles are reduced to nanometer size by grinding. A suitable tool for this method is a planetary ball mill, such as RETSCH’s PM 100, PM 200 or PM 400, which provides the necessary energy input for grinding down to the nanometer range.
Preparation of Soil, Sewage Sludge and Sediment Samples in a Wastewater Treatment Laboratory
The preparation of a mixture of organic and inorganic samples holds some difficulties: whereas sand, clay and stones can usually be ground to homogeneous samples with suitable laboratory mills, the high energy input can cause samples with organic components such as fat or starch to cake. Carsten Bunn, a laboratory technician at the waste water treatment laboratory BRW, has to deal with this problem every day. He treats samples which are taken from the sand traps of the wastewater treatment plants and consist of exactly that mixture. The sediments of household and industry waste water not only contain sand, clay or leaves but anything that people nowadays dispose of through the sewer system: cellulose, hair and especially food residues.
Renewable raw materials are gaining ground
The representative sample preparation of plants requires experience
Size reduction within the context of sample preparation
In general “size reduction” is taken to mean the disintegration of solid substances by mechanical forces without altering their state.
The preparation of samples of solid substances for spectroscopic analysis
X-ray fluorescence spectrometry is one of the most versatile multi-element methods of chemical analysis. The technique is based on excitation of fluorescent radiation from a sample by bombarding it with high energy X-ray quanta and subsequent study of the characteristic X-ray radiation emitted by its elements.
Höchstleistung im Doppelpack
Mit der PM 100 und der PM 200 präsentiert Retsch eine neue Generation von Planeten-Kugelmühlen mit einer bzw. zwei Mahlstellen, die in diesem Produktsegment neue Leistungsstandards setzen.
Herstellung von Nanopartikel mit der Planeten-Kugelmühle
Die Herstellung von Nanopartikeln, deren Größe im Bereich von 1 Mikron und kleiner liegt, ist in vielen technischen Bereichen immer mehr auf dem Vormarsch, denn sie ermöglichen die gezielte Veränderung von Materialeigenschaften.
Kleine Partikel - großer Effekt
Die Anwendungsmöglichkeiten von Nanopartikeln sind so vielfältig wie ihre Form und E igenschaften. Technisch lassen sich die „Zwerge“ beispielsweise durch Vermahlung größerer Partikel erzeugen. Planeten-Kugelmühlen erreichen die für diese Nanovermahlung nötigen E nergieeinträge.
Zusammenspiel der Kräfte
Planeten-Kugelmühlen ermöglichen mechanisches Legieren dank ihrer hohen Zerkleinerungsenergie
Mechanisch legierte Werkstoffe haben schon längst ihren Einzug in die moderne Werkstofftechnik gehalten. Viele neue Werkstoffe und Werkstoffkomposite wurden in den letzten Jahren durch intensive Forschung entwickelt und werden bereits industriell hergestellt. Mechanisches Legieren ist ein gängiges Verfahren, um Werkstoffpaarungen oder Komposite zu synthetisieren, die auf konventionellem Wege nicht realisierbar wären, wie z. B. das Verbinden von Natur aus unmischbarer Legierungspartner. Das Werkzeug der Wahl dafür sind Planeten-Kugelmühlen.
宣传册 (2)
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Product overview
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Planetary Ball Mills
PM 100 / PM 100 CM / PM 200 / PM 400 / PM GrindControl
文献参考 (2)
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Chemical activation of MgH2; a new route to superior hydrogen storage materials
We report the discovery of a new, chemical route for ‘activating’ the hydrogen store MgH2, that results in highly effective hydrogen uptake/release characteristics, comparable to those obtained from mechanically-milled material. Hydrogen is widely regarded as a promising alternative to carbonbased fuels; it can be produced from a variety of renewable resources and, when coupled with fuel cells, offers the prospect of near-zero emission of pollutants and greenhouse gases.1 However, the development of hydrogen as a major energy carrier will require solutions to many scientific and technological challenges. Foremost among these is the issue of hydrogen storage; the lightest of all the chemical elements has an excellent energy content per unit weight, but a low energy content per unit volume.
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ISO 659 Oilseeds - Determination of oil content
Ball Mills
测试报告 (11)
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Ceramics, Tungsten carbide, powder with and without cobalt
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Metals, Ferrite powder
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Minerals, Clay minerals: Montmorillonite, caolinite
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Minerals, Dolomite
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Nanotube in oil
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Pigments, Cobalt blue / turqouise blue
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Quartz, Sand, quartz grit
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Sand
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Shells, Nacre (mother of pearl)
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Silicon
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Soil, Mould, limestone, quartz
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