摘要:
A composition comprises at least one form of attapulgite present in a solid weight fraction amount ranging from 0.25% to 5%; kaolin present in a solid weight fraction amount ranging from 17% to 50%; and optionally Ball Clay in a solid weight fraction amount ranging from 0% to 25%. Although makeable by other processes, in some embodiments, the composition is makeable by mixing component ingredients. Although usable for other purposes, in some embodiments, the composition is used to make ceramic pieces, e.g., via casting, pressing, jiggering or jollying, especially when the slip has solids, chemistry and viscosity suitable for shaping before drying, sintering, and optionally finishing.
摘要:
본 발명은 마그네슘-아미노점토(Mg-AC)를 주형으로 형성하되, 상기 마그네슘-아미노점토에 금속이 도핑되어(doping) 화학식 1 내지 화학식 3중 어느 하나로 표시되는 마그네슘-아미노점토 금속복합체를 제공한다. [화학식 1] [MgAC]-TiO 2 [화학식 2] [MgAC]-Fe 3 O 4 [화학식 3] [MgAC]-Fe 3 O 4 /TiO 2 따라서 금속전구체에 따라 이산화타타늄(TiO2) 또는 산화철(Fe 3 O 4 )이 외부에 형성되어 광촉매 반응이 일어나는 산화촉매를 제조할 수 있다.
摘要:
A method of improving the flow of a proppant pack or gravel pack comprises: introducing into a subterranean formation or a well a plurality of ceramic particles, the ceramic particles comprising about 0.1 wt.% to about 25 wt.% of a rare earth-containing compound, based on the total weight of the ceramic particles; and forming a proppant pack or gravel pack comprising the plurality of the ceramic particles; wherein the proppant pack or gravel pack improves fluid flow as compared with a reference proppant pack or gravel pack formed from otherwise identical ceramic particles except for being free of the rare earth-containing compound.
摘要:
A method for making proppant particles is provided. The method can include providing a slurry of ceramic raw material, the slurry containing a reactant including a polycarboxylic acid, and flowing the slurry through a nozzle in a gas while vibrating the slurry to form droplets. The method can also include receiving the droplets in a vessel containing a liquid having an upper surface in direct contact with the gas, the liquid containing a coagulation agent. The method can further include reacting the reactant with the coagulation agent to cause coagulation of the reactant in the droplets. The droplets can then be transferred from the liquid and dried to form green pellets. The method can include sintering the green pellets in a selected temperature range to form the proppant particles. In one or more exemplary embodiments, the reactant can be or include a PMA:PAA copolymer.
摘要:
La presente invención esta relacionada con el desarrollo de una nueva formulación porcelánica de grado eléctrico que presenta características mecánicas y dieléctricas mejoradas, y cuya aplicación primordial es en componentes eléctricos, como lo son los aisladores eléctricos. Esta invención tiene como objeto principal proporcionar una nueva alternativa para incrementar las propiedades finales de una porcelana de grado eléctrico, la cual está relacionada con la incorporación de concentraciones adecuadas de óxidos cerámicos en escala nano-métrica, como parte de la composición inicial de la pasta porcelánica. Esta nueva alternativa nanotecnológica propicia un incremento en las propiedades finales de la porcelana de grado eléctrico, tales como resistencia a la flexión o módulo de ruptura en frío, así como la rigidez dieléctrica, lo cual es debido a que la incorporación de óxidos cerámicos, tales como la alúmina (α-Al 2 O 3 ) y la circonia (ZrO 2 ), en escala micrométrica (es decir, menores a 100 nanómetros), modifican favorablemente la microestructura de la porcelana base. La resistencia mecánica, específicamente la resistencia a la flexión a tres puntos, de las composiciones porcelánicas de la presente invención, es hasta un 38% mayor que la composición de una porcelana convencional base sílice. Por otro lado, la capacidad aislante de la composición de esta invención es hasta 30% superior al valor de la porcelana silicosa de referencia. Otro aspecto relevante de esta invención es que se basa en el concepto de que los nano-óxidos cerámicos de alúmina (α-Al 2 O 3 ) y circonia (ZrO 2 ) refuerzan la microestructura de la porcelana silicosa, ya que se incrementa la cantidad de fase cristalina y por ende se reduce la fase amorfa. Además, los nano-óxidos cerámicos favorecen el incremento en la concentración de la fase cristalina mullita (3Al 2 O 3 .2SiO 2 ) en la microestructura, la cual es sabido que beneficia el desempeño mecánico de las porcelanas triaxiales.
摘要翻译:本发明涉及开发具有改进的机械和介电性能的新的电级瓷器制剂,其主要用于电气部件,例如电绝缘体。 本发明的主要目的是提供一种新的替代方案,其可以用于增强电级瓷器的最终性能,这是由于纳入适当浓度的纳米级陶瓷氧化物作为瓷器的初始组成的一部分 糊。 由于掺入氧化铝(α-Al 2 O 3)和氧化锆(ZrO 2)等陶瓷氧化物,这种新的纳米技术替代物可以提高电级瓷砖的最终性能,如弯曲强度和断裂模量以及介电强度。 ),微米级(即小于100纳米),有利地改变了基础瓷器的微观结构。 本发明的瓷组合物的机械强度,特别是三点弯曲强度比常规二氧化硅基瓷的组成高出38%。 此外,本发明的组合物的绝缘能力比参考硅质瓷的绝缘能力高达30%。 另外,本发明是基于以下思想:氧化铝(α-Al 2 O 3)和氧化锆(ZrO 2)的陶瓷纳米氧化物增强了硅质陶瓷的微结构,因为结晶相的量增加,因此,非晶态 相位减小。 此外,陶瓷纳米氧化物促进了微观结构中莫来石结晶相(3Al2O3.2SiO2)的浓度的增加,已知这将有利于三轴瓷器的机械性能。
摘要:
A dried or at least partially dried ceramic feedstock, a method of preparing a dried or at least partially dried ceramic feedstock having a residual solvent content of up to about 5 wt. %, ceramic formulations comprising one or more ceramic precursors, temperature sensitive gelling agent, solvent, and having a viscosity suitable for low pressure injection molding, methods for preparing said ceramic formulations, a method of forming a ceramic article from said ceramic formulations, and a ceramic article obtainable therefrom.
摘要:
The invention relates to multipurpose ceramic clay comprising ceramic particles and silicone rubber. The ceramic clay may additionally comprise a silicone rubber hardening agent and/or solvent. Products made using the multipurpose ceramic clay and methods of making products using the clay area also included in the scope of the invention.
摘要:
A composition including an aluminosilicate and a flux, where the alumlnosilicate and the flux are calcined to form calcined granules is disclosed. A method including adding a flux to an aluminosilicate to form a mixture and calcining the mixture to form calcined granules is also disclosed. The aluminosilicate may include kaolin and/or chamotte. The flux may include a salt, sodium silicate, or potassium feldspar. The composition may be calcined at a temperature less than about 1300°C. The calcined granules may be coated with a hydrophobic coating. The hydrophobic coating may include a silane or siloxane. The calcined granules may have a hardness greater than 4.5 Mohs.
摘要:
Die Erfindung betrifft die Verwendung von ungebrannten, kohlenstoffträgerfreien, insbesondere durch Pressen geformten oder ungeformten, feuerfesten Erzeugnissen enthaltend Bindemittel und Körnungen der feuerfesten, bei Temperaturen über 900 ° C, eine keramische Bindung angehenden Werkstoffe zur Herstellung von Magnesiachromitsteinen, Magnesiaspinell- und Spinellsteinen, Magnesiazirkonia- und Magnesiazirkonsteinen, Magnesiahercynit- und Magnesiagalaxitsteinen, Dolomit-, Dolomit-Magnesia- und Kalk-Steinen, Forsterit- und Olivinsteinen, Magnesiaforsteritsteinen, Magnesiapleonaststeinen, Magnesiasteinen als feuerseitige, feuerfeste Auskleidung von großvolumigen, mit oxidierender oder im Wesentlichen oxidierender Atmosphäre betriebenen Industrieöfen zur Herstellung von Zement, Kalk, Magnesia und Doloma in Form von gepressten Steinen oder ungeformten Massen, wobei die Steine eine Kaltdruckfestigkeit über 20 MPa aufweisen, und die Erzeugnisse mindestens ein erstes temporäres Bindemittel enthalten, das eine Bindung der Körner der Körnung in einem Temperaturbereich zwischen Raumtemperatur und 500 °C gewährleistet, und mindestens ein zweites temporäres Bindemittel enthalten, das eine Bindung der Körner der Körnung im Temperaturbereich zwischen 300 und 1 000 ° C gewährleistet.