摘要:
High-temperature-resistant composites are formed of at least two layers of high-temperature-resistant carbon-based materials or graphite-based materials. The layers are joined to one another by a carbonized binder which contains planar anisotropic graphite particles. The planar anistropic graphite particles have a high anisotropy in respect of their crystal structure and their thermal conductivity are added to the carbonizable binder.
摘要:
A freeze-drying apparatus (1) includes an arrangement of individual product platforms (19) that are supported vertically in a frame (20) in a drying chamber, in which each platform is able to be moved to a shift level, in which lateral guides (20, 21) designed to support a carriage (15) are arranged with a fixed height position, and which cooperate with the guides (16, 18) of a loading and unloading device. All product platforms (19) in the drying chamber can be loaded by repeating this operation cyclically. The freeze-drying apparatus (1) comprises an electrical drive unit powered by a battery (44).
摘要:
A [lacuna] principally for loading and unloading the utility surface (3′) of the drying chamber (2) of a freeze drying system, which utility surface is located at a defined height position, the unloading position, is characterized by a carriage (8), which is disposed slightly above said utility surface and extends, during loading or unloading, transversely with respect to a movement direction (8′) and in parallel with the utility surface and which forms a movable guiding edge for the drying vessels (5), and by guides (7), which are disposed on both sides of the utility surface (3), extend in parallel with the said movement direction and form fixed guiding edges for the drying vessels (5). The carriage (8) is driven by two linear motors, the respective secondary parts (18) of which are fixedly connected to the ends of the carriage (8) on both sides and are supported on the guides (7) which at the same time accommodate the primary parts. All of the components of the device thus defined are located inside the drying chamber (1), wherein a mechanically extraordinarily simple and low-wear design is achieved. The structural design of this type of device renders it possible inside the drying chamber (2) to provide lateral guides (7), which are independent of the utility surface, and is suitable for the upgrading existing freeze drying systems in stages with a view to using a plurality of carriages, a lateral displaceability of the guides (7), i.e. which is to be arranged transversely with respect to the movement direction (8′), etc. By virtue of the fact that the essential components of this device can be formed in a hermetically encapsulated construction, and are thus accessible for sterilization, reliable handling capability is also provided in terms of hygiene.
摘要:
An expanded graphite is derived from a graphitic or partially graphitic starting material selected from the group consisting of natural graphite, compressed expanded graphite, partially oxidized graphite and/or graphite fibers having a BET surface area of >30 m2/g. The expanded graphite is obtained by reaction of the starting material with substances capable of intercalation or mixtures of substances capable of intercalation to give a compound designated as an intercalation compound and subsequent expansion in plasma.
摘要:
A latent heat storage device including a vessel, a phase change material disposed within the vessel, at least one heat exchange interface in contact with the phase change material, at least one sheet of graphite foil which extends within the bulk of the phase change material.
摘要:
Process for protecting fiber-reinforced, carbon-containing composites whose matrix comprises, at least in the outer layer, silicon carbide (SiC) and also silicon (Si) and/or silicon alloys against oxidation, which comprises the steps a) impregnation of the composite with an aqueous, phosphate-containing solution, b) drying, c) heat treatment at a temperature which is at least sufficient to convert the dried solution into insoluble compounds which are suitable for forming a self-healing glass, wherein the composite is treated oxidatively to form silicon oxide (SiO2) either prior to step a), between steps a) and b) or during or after step b) and/or c).
摘要:
A multilayer ceramic composite is described which contains at least one supporting zone having oxidation-sensitive reinforcing fibers as well as a matrix. The matrix optionally contains oxidation-sensitive components. The composite further contains at least one surface layer, as well as at least one additional protective layer disposed between the supporting zone and surface layer, and whose matrix is composed substantially of at least one component of the matrix of the supporting zone or cover layer. The protective layer further contains additives that form self-healing layers.
摘要:
A device for loading and unloading the utility surface (3′) of a drying chamber (2) of a freeze drying system. The device includes a carriage (8) which forms a movable guiding edge for the drying vessels (5), and is moveable on guides (7) disposed on both sides of the utility surface (3) and which extend in parallel with the movement direction and form fixed guiding edges for the drying vessels (5). At least one linear motor is provided to produce a drive for the carriage. All of the components of the device can be located inside the drying chamber (1), and the device of the present invention is suitable for upgrading existing freeze drying systems.
摘要:
Temperature-control bodies for photovoltaic modules have heat transfer tubes embedded in a layer of compressed expanded graphite and connected to the surface of a photoelectric cell layer that faces away from the solar radiation. A layered composite semi-finished product has a layer of compressed expanded graphite with a density of between 0.02 g/cm3 and 0.5 g/cm3.
摘要翻译:用于光伏模块的温度控制体具有嵌入在压缩膨胀石墨层中的传热管,并连接到远离太阳辐射的光电池层的表面。 层状复合半成品具有密度在0.02g / cm 3至0.5g / cm 3之间的压缩膨胀石墨层。
摘要:
A sealing material is formed as a planar laminate compound made of at least two layers of a graphite film with a maximum density of 1.6 g/cm3 alternating with at least one metal inlay. The metal inlay has a three-dimensional structure and has open depressions on one side which are covered by graphite overlays with a thickness in the range of up to a maximum of 5.0 mm. The depressions are enclosed by elevations intersecting in straight lines, and the ridge lines on both main sides lie approximately on defined planes a, b. Alternatively, the metal inlay has a hole structure both sides of which are covered by graphite overlays with a thickness in the range of up to a maximum of 5.0 mm. The holes are enclosed by webs and on both main sides lie approximately on the planes a, b. The hole area forms 40% to 90% of the total surface area of the metallic inlay.
摘要翻译:密封材料形成为由至少两层石墨膜制成的平面层压化合物,石墨膜的最大密度为1.6g / cm 3,与至少一种金属嵌体交替。 金属嵌体具有三维结构,并且在一侧具有由石墨覆层覆盖的开口凹陷,其厚度在最大5.0mm的范围内。 凹陷由直线相交的高度包围,两个主边上的脊线大致位于限定的平面a,b上。 或者,金属嵌体具有孔结构,其两侧被石墨覆盖层覆盖,厚度在最大达到5.0mm的范围内。 孔被腹板包围,两个主要侧面大致位于平面a,b上。 孔面积占金属嵌体总表面积的40%至90%。