摘要:
A method for continuous production of a thermally insulating mixture comprising silica particles and opacifier particles, in which a premixed stream comprising a carrier gas, silica particles and opacifier particles is introduced into a fine impact mill, ground and mixed therein, after which the solid is separated from the gas stream, wherein the fine impact mill is an air-stream mill comprising grinding tracks arranged one above the other on a rotatable shaft.
摘要:
Silicon dioxide powder in the form of aggregated primary particles has a specific pore length L of 2.5×105 to 4×105 m/μg, where L is defined as the quotient formed from the square of the BET surface area and the cumulative 2-50 nm pore volume determined using the BJH method, as per the formula L=(BET×BET)/BJH volume.A silanized silicon dioxide powder in the form of aggregated primary particles has a specific pore length L of 2.5×105 to 3.5×105 m/μg, and in it the surface area of the aggregates or parts thereof is occupied by chemically bound silyl groups.A thermal insulant comprises the silicon dioxide powder and/or the silanized silicon dioxide powder.
摘要翻译:聚集的一次粒子形式的二氧化硅粉末的比孔长度L为2.5×10 5〜4×10 5 m / mug,其中L被定义为由BET表面积的平方形成的商和累积的2-50 使用BJH法测定的nm孔体积,按式L =(BET×BET)/ BJH体积计算。 聚集一次粒子形式的硅烷化二氧化硅粉末的比孔长度L为2.5×10 5〜3.5×10 5 m / mug,其中聚集体或其部分的表面积由化学键合的甲硅烷基占据。 热绝缘体包括二氧化硅粉末和/或硅烷化二氧化硅粉末。
摘要:
A patient monitor is synchronized with a portable sensor module by detecting a first coupling of the portable sensor module to the patient monitor. In response to the first coupling, the portable sensor module and the patient monitor each store configuration settings and record patient data acquired through the portable sensor module. After the portable sensor module is decoupled from the patient monitor, the portable sensor module continues to store patient data and the configuration settings stored in the patient monitor and the portable sensor module are allowed to change relative to one another. Upon detecting a second coupling of the portable sensor module to the patient monitor, the portable sensor module and the patient monitor resynchronize with one another to remove any differences in the configuration settings and to provide copies of any patient data missing from either the portable sensor module and the patient monitor.
摘要:
Formulation comprising hydrophobicized particles of silicon dioxide, mineral oil and one or more emulsifiers, where the hydrophobicized silicon dioxide is a fumed silicon dioxide, possesses a BET surface area of 200 to 300 m2/g, has on the surface of the particles O—Si—(CnH2n+1)3 groups, where n is 1 to 3 and where the (CnH2n+1) units are alike or different, has a carbon content of 1.5% to 5% by weight, based on the hydrophobic silicon dioxide, and is present in the formulation with a fraction of 0.05% to 5% by weight.
摘要翻译:包含疏水化二氧化硅颗粒,矿物油和一种或多种乳化剂的配方,其中疏水化二氧化硅是热解二氧化硅,具有200至300m 2 / g的BET表面积,在颗粒O-Si的表面上具有 - (C n H 2n + 1)3组,其中n为1至3,并且其中(C n H 2n + 1)单元相同或不同,基于疏水性二氧化硅,碳含量为1.5重量%至5重量%,以及 以0.05%至5%(重量)的比例存在于制剂中。
摘要:
Pyrogenic titanium dioxide is compressed to slugs by preliminarily deaerating it, compressing it to slugs, and crushing the slugs and optionally classifying them. The slugs are characterized by a tamped density (to DIN EN ISO 787-11) of 500 to 1200 g/l.
摘要翻译:热原二氧化钛通过预先脱气将其压缩成块状物,将其压缩成块状物,并粉碎絮块并任选地对其进行分级。 这些s are的特征在于夯实的密度(符合DIN EN ISO 787-11)为500至1200g / l。
摘要:
An aqueous dispersion having a pH value of between 3 and 7 containing 1 to 35 wt. % of a pyrogenically produced silicon-aluminium mixed oxide powder with a specific surface area of 5 to 400 m2/g, wherein the proportion of aluminium oxide in the powder is between 90 and 99.9 wt. % or between 0.01 and 10 wt. %, the surface of the powder comprises zones of aluminium oxide and silicon dioxide and the powder exhibits no signals for crystalline silicon dioxide in an X-ray diffractogram. Said dispersion may be used for the chemical-mechanical polishing of conductive, metallic films.
摘要:
Aqueous dispersion containing a silicon-aluminum mixed oxide powder, the powder containing 0.1 to 99.9 wt. % Al2O3 and Si—O—Al-bonds. The dispersion can be produced using dispersing and/or grinding devices which a achieve an energy input of at least 200 KJ/m3. The dispersion can be used for the chemical-mechanical polishing of semiconductor substrates.
摘要翻译:含有硅铝混合氧化物粉末的水分散体,该粉末含有0.1〜99.9重量% %的Al 2 O 3和Si-O-Al键。 分散体可以使用达到至少200KJ / m 3的能量输入的分散和/或研磨装置来生产。 该分散体可用于半导体衬底的化学机械抛光。
摘要:
Formulation comprising hydrophobicized particles of silicon dioxide, mineral oil and one or more emulsifiers, where the hydrophobicized silicon dioxide is a fumed silicon dioxide, possesses a BET surface area of 200 to 300 m2/g, has on the surface of the particles O—Si—(CnH2n+1)3 groups, where n is 1 to 3 and where the (CnH2n+1) units are alike or different, has a carbon content of 1.5% to 5% by weight, based on the hydrophobic silicon dioxide, and is present in the formulation with a fraction of 0.05% to 5% by weight.
摘要翻译:包含疏水化二氧化硅颗粒,矿物油和一种或多种乳化剂的配方,其中疏水化二氧化硅是热解二氧化硅,具有200至300m 2 / g的BET表面积,在颗粒O-Si的表面上具有 - (C n H 2n + 1)3组,其中n为1至3,并且其中(C n H 2n + 1)单元相同或不同,基于疏水性二氧化硅,碳含量为1.5重量%至5重量%,以及 以0.05%至5%(重量)的比例存在于制剂中。
摘要:
Processing aid comprising a) 10-50% by weight of hydrophobized, at least partially aggregated, metal oxide particles b) 20-75% by weight of one or more thermoplastic polyurethanes, c) 0.5-50 by weight of one or more prepolymers comprising isocyanate groups the sum of the constituents a) to c) amounting to at least 80% by weight, based on the processing aid.