Abstract:
A composite material with a porous inorganic-nonmetallic matrix and a second material, and a process for its production, are characterized in that the porous inorganic-nonmetallic matrix has a bending strength ≧40 MPa as measured according to ISO 6 872; the second material is an organic material which at least partly fills the pores of the porous matrix; and the composite material has a modulus of elasticity, E, ≧25 GPa as measured according to ISO 10 477.
Abstract:
A ceramic support capable of supporting a catalyst comprising a ceramic body having fine pores with a diameter or width up to 1000 times the ion diameter of a catalyst component to be supported on the surface of the ceramic body, the number of the fine pores being not less than 1×1011 pores per liter, is produced by introducing oxygen vacancies or lattice defects in the cordierite crystal lattice or by applying a thermal shock to form fine cracks.
Abstract:
A ceramic support capable of supporting a catalyst comprising a ceramic body having fine pores with a diameter or width up to 1000 times the ion diameter of a catalyst component to be supported on the surface of the ceramic body, the number of the fine pores being not less than 1×1011 pores per liter, is produced by introducing oxygen vacancies or lattice defects in the cordierite crystal lattice or by applying a thermal shock to form fine cracks.
Abstract:
A composite material with a porous inorganic-nonmetallic matrix and a second material, characterized in that said porous inorganic-nonmetallic matrix has a bending strength of null40 MPa as measured according to ISO 6 872; said second material is an organic material which at least partly fills the pores of said porous matrix; and said composite material has a modulus of elasticity, E, of null25 GPa as measured according to ISO 10 477.
Abstract:
An oil and gas well cementing composition has styrene/butadiene latex and a combination of nonionic and anionic surfactants for improved physical properties, especially fluid loss.
Abstract:
A porous refractory body, primarily a porous plug for the refractory lining of a vessel containing molten metal through which plug gas can be blown into the metal. This body has a cold crushing strength of not less than 200 kg/cm2 and consists of a coarse-grained refractory material with a minimum quantity of a suitable binding agent, and has permeable pores of a cross section not less than 0.05 mm and a gas permeability of at least 100, and preferably more than 500 nanoperm. The hot bending strength or modulus of rupture of the body at 1,400* C is from 20 - 60 kg/cm2. The refractory material is mixed with the binding agent, and the mixture is compressed with a pressure of at least 300 kg/cm2 before firing to bring substantially all of the grains into contact with adjacent grains.
Abstract translation:一种多孔耐火体,主要是用于容纳熔融金属的容器的耐火衬里的多孔塞,塞子气体可以通过该熔融金属吹入金属中。 本体具有不小于200kg / cm 2的冷压碎强度,由具有最小量的合适粘合剂的粗粒耐火材料组成,并且具有不小于0.05mm的横截面的渗透孔和气体 渗透率为100以上,优选为500纳米以上。 身体在1400℃时的热弯曲强度或断裂模量为20〜60kg / cm2。 将耐火材料与粘合剂混合,并在烧制之前以至少300kg / cm 2的压力压缩混合物,以使基本上所有的颗粒与相邻的颗粒接触。
Abstract:
PURPOSE: A concrete brick is provided to remarkably decrease the weight of a brick by manufacturing a brick using ingot which is made by melting the waste styrofoam, and to promote the thermal insulating effectiveness. CONSTITUTION: The concrete brick is manufactured by: mixing usual aggregate with the waste styrofoam reproduced aggregate which having its particle sized to be modulated according to the standard of aggregate about concrete bricks by pulverizing and processing the waster styrofoam ingot using a crusher; mixing cement to have 1:7 of ratio of the waste styrofoam to the reproduced aggregate; pressurizing using a vibrating press. Therefore, the concrete brick using the waste styrofoam reproduced aggregate meets the standard of KS F 4004, and particularly having 1120-2100 kg/m¬3 of unit volume weight, 93-320 kg/cm¬2 of compressing strength; 6.2-11.7 % of absorption rate, and 0.28-1.35 kcal/mh°C of heat conduction rate.
Abstract translation:目的:提供一种混凝土砖,通过使用通过熔化废发泡胶制成的锭来制造砖,显着降低砖的重量,并提高隔热效果。 构成:混凝土砖的制造方法是:使用破碎机粉碎和处理废发泡胶锭,将通常的聚集体与废聚苯乙烯泡沫塑料再生骨料混合,将其粒径根据混凝土骨料的标准调整; 混合水泥以废弃聚苯乙烯与废弃聚苯乙烯的比例为1:7; 使用振动压力机进行加压。 因此,使用废发泡聚苯乙烯再生骨料的混凝土砖满足KS F 4004的标准,特别是具有1120-2100kg / m 3的单位体积重量,93-320kg / cm 2的压缩强度; 吸收率为6.2-11.7%,导热率为0.28-1.35 kcal / mh。
Abstract:
The present invention provides cementitious tile adhesives comprising ordinary Portland cement, sand or another inorganic filler, and from 0.12 to 0.6 wt.% of total solids of one or more polyether group containing crosslinked cellulose ethers. The present invention also provides methods of making the polyether group containing crosslinked cellulose ethers comprising crosslinking a cellulose ether at 90 °C or less, in an inert atmosphere, e.g. nitrogen, in the presence of a polyether group containing crosslinking agent and in the presence of alkali; the process may comprise part of a stepwise addition process of making of a cellulose ether itself in which the crosslinking of the cellulose ethers precedes at least one addition of alkyl halide or alkylene oxide to form, respectively, alkyl or hydroxyalkyl groups on the cellulose.
Abstract:
The invention relates to an agglomerate containing at least one of the following water-soluble or water-dispersible materials as a bonding base polymer: carboxylized and/or alkoxylized starch, cellulose ether and fully synthetic vinyl polymers and/or polyacrylates. The agglomerate is characterized in that it contains a blasting agent which produces a high swelling pressure, but, advantageously, does not gel. The agglomerate can have a regular geometric form or not. Its weight should be between 0.5 and 500g. The agglomerate is used in particular in the production of lump-free paste.