695 results about "Aluminium silicate" patented technology

An exhaust system component (18, 10) for use in an exhaust system of a motor vehicle. The exhaust system component comprises a double wall surrounding a space (9, 11; 21) through which exhaust gas may flow when the exhaust system component is in use in an exhaust system. The double wall is comprised of a first and second metal wall (12, 14; 26, 28) that define between them a gap. The gap comprises an insulation material (16) made of chopped aluminium or magnesium aluminium silicate glass fibers. The insulation material can be in the form of, for example, an end cone perform. The exhaust system component can be an exhaust pipe (18).

The invention discloses a making method of aminophenol with substituted group through hydrogenating nitrophenol with substituted group, which adopts Ni-A/X typed loaded catalyst, wherein A is one of Co, Mn, Cu, Cr, Mo, Ca, Zn, Fe and W; the carrier X is one of their composition of zeolite molecular sieve, Al2O3, SiO2, TiO2, MgO, active charcoal or amorphic aluminium silicate; the mass percentage of Ni in the catalyst is 2-45% and the mass percentage of component A is 1-40%.

A process for preparing natural gel of magnesium aluminium silicate from bentonite, attapulgite, bentone, etc includes such steps as pulverizing, preparing slurry, adding pour depressor, stirring, dynamic centrifugal separation, adding inorganic salt containing one-valence metal ions, stirring, pre-activating, adding organic salt containing at least Na ions, stirring for modifying, and post-treating.

The present invention provides a mounting mat (30) for mounting a pollution control monolith (20) in a pollution control device (10). The mounting mat has a bulk density of 0.12 to 0.3 g/cm³ and comprises (i) a layer of chopped magnesium aluminium silicate glass fibers and (ii) a layer of ceramic fibers obtainable from a sol-gel process. Preferably, the layer of chopped magnesium aluminium silicate glass fibers and the layer of ceramic fibers define opposite major surfaces of the mat. The present invention further provides a pollution control device (10), comprising a pollution control monolith (20) arranged in a metallic casing (11) with the mounting mat (30) disposed between the metallic casing (11) and pollution control monolith (20).

The invention provides a preparation method of a nanopowder-based composite thermal insulation material. The preparation method comprises the following steps: by using nanopowder as a base material and alkali-free ultrafine glass fibers, aluminium silicate fibers, zirconia fibers, multicrystal mullite fibers and the like as reinforcing materials, adding infrared opacifiers (potassium hexatitanate whiskers, SiC, ZrSiO4 and rutile or anatase TiO2), adding a high-temperature contraction inhibitor and a hydrophobe as required and carrying out dispersion, blending, compression forming and the like, thus preparing the nanopowder-based composite thermal insulation material. The preparation method belongs to the dry forming preparation process and is simple in preparation process and safe and reliable in operation process. The press-formed thermal insulation material has good mechanical property, thermal insulation property, high-temperature thermal stability and hydrophobicity and can meet the requirements of the fields such as aerospace, the high-temperature industry and the like for efficient thermal insulation materials.

The invention relates to the fire retardant coating technical field, in particular to steel-structure fire retardant coating taking self-crosslinkable silicone-acrylate composite emulsion as substrate as well as a preparation method thereof. The invention adopts polysiloxanes and self-crosslinkable polyacrylate composite emulsion as film-forming materials; moreover, based on the commonly used composite fire retardant comprising ammonium polyphosphate, melamine and pentaerythritol, melamine phosphate and early stage foaming agent with excellent carbonizing and foaming performances are added in the fire retardant coating, thereby greatly increasing the foaming capacity of the coating with the thickness of the foaming layer 20 times to 35 times of the prior coating; meanwhile, titanium pigment, sepiolite and aluminium silicate fiber are adopted as high temperature resistant filler, and propylene glycol is adopted as film-forming auxiliary agent; in addition, the fire endurance of the formed fire retardant coating can reach 90min (when coating thickness is 2mm). The coating has simple preparation method, no pollution, low cost and wide application.

The invention discloses a powdery release agent for die casting, which is composed of component A and component B with particle diameter n<=10 mu m, in which, the component B is one or more of polyethylene, polypropylene, polyethylene wax, micropowder wax, epoxy resin, silicone resin, phenol-formaldehyde resin or polystyrene, the weight per cent is 10-20%, the component A is one or more of talc, graphite, alumina, supramoly, aluminium nitride, boron nitride or aluminium silicate. The release agent of the invention is difficult to react even being heated, because of having powdery or particle-shaped form and with good chemical stability. In addition, after being used, without polluting the water quality and waste water releasing and processing problem, without polluting the environment, also reducing energy sources consuming. In a word, using the release agent of the invention can settle traditional problems of release agent, the invention improves quality of the casting, prolongs lifetime of the mould and reduces environmental pollution.

The invention discloses a special synthesis process of poly ferrum aluminium silicate which comprises the steps of raw material selection, pulverized coal ash sintering, sintered coal ash handling, filtering sediment treatment, treatment of pickle liquor for iron-making waste slag, preparation of polymerized aluminum-ferrum, preparation of polymeric silicon acid and polyaluminum-ferric-silicate. The process can greatly shorten synthesizing time for finished product, and lower the fabrication cost and waste water treatment cost.

A ceramic brake pad of high-performing automobile comprises the following components according to weight percentages: 7%-11% of ceramic fibre, 7-9% of glued aluminium silicate fibre, 5-8% of polyacrylonitrile fibre, 2-3% of aramid fibre 7-9% of red copper fibre, 7-10% of acicular aedelforsite fibre, 7-12% of barite, 7-9% of chromite, 1-2% of butyronitrile rubber, 7-11% of graphite particle, 0.2-0.5% of zinc oxide, 5-8.5% of calcined petroleum coke, 1-3% of expansion graphite, 6-10% of boron containing phenolic resin, 3-5% of magnetite, 1-1.5% of heavy-burned magnesia, 0.3-0.5% of modified whiten bead of resin acceptor, 3-5% of boron nitride and 0.3-0.5% of alumina; the invention can form excellent friction layer and transmission film in using process, thereby having good lubricating effect without damaging the couple plate; therefore, the service life of the friction material is greatly prolonged.

The invention relates to an environment-friendly PVC (Poly Vinyl Chloride) weld joint sealant for a vehicle. The environment-friendly PVC weld joint sealant mainly comprises the components of diisononyl phthalate (DINP), tributyl citrate (TBC), epoxidized soybean oil (ESO), PVC paste resin, PVC blend resin, fumed silica, modified polyamide resin, barium stearate, zincsoap, triaryl phosphate, thiodipropionic acid distearate alcohol ester, tetraethoxysilane, calcium oxide, ultrathin light calcium carbonate, active nano-calcium carbonate (SPT), ultrathin heavy calcium carbonate, titanium dioxide, wollastonite in powder, ultrathin aluminium silicate and the like. According to the environment-friendly PVC weld joint sealant provided by the invention, the technologies of raw material compounding, nontoxic additive adding and the like are adopted so as to reduce the curing temperature of the sealant; and a 'wet-to-wet' technology is achieved during coating the vehicle. Through the adoption of the environment-friendly PVC weld joint sealant, the energy consumption is reduced, and the volatizing of harmful gases is reduced. The environment-friendly PVC weld joint sealant has the characteristics of nontoxicity, environmental protection, fireproof performance, energy conservation, easiness in construction and the like The environment-friendly PVC weld joint sealant is an energy-conservation environmental-protection PVC weld joint sealant.

A high-performance organic fibre brake pad comprises the following components according to weight percentages: 5-9% of cashew nut oil friction powder, 4-8% of chromite, 7-10% of barite, 4-7% of calcined petroleum coke, 3-7% of crystalline flake graphite, 3-6% of sepiolite fibre, 4-7% of ceramic fibre, 1.5-3% of antimony sulphide, 4-7% of red copper fibre, 3-5% of glued aluminium silicate fibre, 1-2% of alumina fibre, 8-11% of vermiculite powder, 9-13% of organosilicone phenol-formaldehyde resin, 1-2% of carbon fibre, 5-7% of bastose, 1-2.5% of wood pulp cellulose, 3-6% of viscose fibre, 6-9% of bamboo carbon fibre, 3-5% of nitrile rubber and 0.3-0.5% of zinc oxide. The invention has the advantages of light weight, strong wear resistance, good flexibility, low noise and long service life, and the like, and the friction performance is stable at operating temperature between 100 DEG C and 450 DEG C.

The invention provides a preparation method of a titanium dioxide pigment with high covering power, weather resistance and whiteness. The preparation method includes: adopting a titanium dioxide primary product, beating in water to prepare slurry, adding water-soluble silicate solution as a dispersant, and performing curing prior to grinding treatment; heating up the slurry, adding in the water-soluble silicate solution, adopting mineral acid to regulate pH value, and performing curing prior to forming a dense, hydrated and unformed silica membrane; adding the water-soluble silicate solution again, maintaining the pH value of the slurry with an acidic aluminium compound, and performing curing prior to forming a loose and porous membrane layer taking aluminium hydrosilicate as a main ingredient so as to assure high covering power and whiteness; wrapping the loose hydrated alumina membrane to assure excellent dispersibility; performing filtration washing, drying, gasification and pulverization, and recovering with a bag filter to obtain the finished product. The preparation method has the advantages that the titanium dioxide pigment prepared with the method has high weather resistance and whiteness besides excellet covering power, is high in production cost, and can be widely applied to the fields of flat and matt building coatings, printing ink and the like with requirements on high dry covering power.

The invention relates to a hydrocracking catalyst and a preparation method thereof. The hydrocracking catalyst consists of hydrogenation active metal and a carrier structured by a modified composite molecular sieve and amorphous aluminium silicate; the hydrogenation active metal is molybdenum and/or tungsten, and/or cobalt, and/or nickel; the molybdenum and/or the tungsten accounts for 15.0-30.0% of the weight of the catalyst as weighed by oxide; the cobalt and/or the nickel accounts for 4.0-8.0% of the weight of the catalyst as weighed by oxide; the balance is the carrier structured by the modified composite molecular sieve and amorphous aluminium silicate; and the modified composite molecular sieve accounts for 10-20% and the amorphous aluminium silicate accounts for 80-90% by metering as the weight of the catalyst. The catalyst has the advantages that the raw materials are cheap and easy to buy; the preparation process is simple and easy to operate and has no generation of poisonous and harmful substances; the adaptability directing at the feature change of the raw materials; and the catalyst is suitable for experiment research on the existing hydrocracking process technology, can effectively solve the laboratory research difficulty and provides a reliable guarantee for the research and implementation of the hydrocracking process technology.

The invention discloses an emulsification type car cleaning polish and a preparation method of the emulsification type car cleaning polish and belonging to the field of fine chemicals. The emulsification type car cleaning polish is characterized in that the emulsion is prepared by using paraffin wax, carnauba wax and methylsilicone oil as the polish, mineral oil as a penetrating agent, fatty alcohol-polyoxyethylene (7) ether and fatty alcohol-polyoxyethylene (10) ether as an emulsifier, coconutt diethanol amide and coconut fatty alkanolamide as a washing detergent and a synergist, aluminium silicate as a grinding material and water as the medium and adding essences. The emulsification type car cleaning polish disclosed by the invention is an emulsification type car cleaning polish with integration of cleaning, polishing, anti-static, dustproof and waterproof and the like functions; the cleaning capacity to oil strains is very strong and the brightness can be maintained for a long timeafter use; and the emulsification type car cleaning polish is an energy-saving and environmental-friendly product and has no harm to human bodies and no pollution to the environment.

The invention discloses a ventilation air methane combustion catalyst and a preparation method thereof. The catalyst consists of the following components in percentage by weight: 1 to 50 percent of active ingredient, 1 to 30 percent of active aid and the balance of porous carrier, wherein the active ingredient is one or two of oxides of manganese and cobalt or soluble salts of manganese and cobalt; the active aid is any one of cerium compounds or lanthanum compounds; and the porous carrier is one or more of aluminium oxide, titanium oxide, zirconium oxide, magnesium oxide, calcium oxide, silicon dioxide, aluminium silicate and magnesium silicate. The catalyst is applied to ventilation air methane combustion and has the advantages of simple preparation method, low cost, relatively low methane ignition point and complete combustion temperature, and the like.

A ceramic brake pad with high performance for middle-to-high grade sedan comprises the following components according to weight percentages: 7%-11% of ceramic fibre, 5-8% of silicate fibre, 6-9% of glued aluminium silicate fibre, 5-8% of aramid fibre, 7-10% of red copper fibre, 6-9% of modified aedelforsite, 7-12% of barite, 4-8% of chromite, 1-2% of butyronitrile rubber, 2-4% of iron oxide black, 7-10% of graphite particle, 0.1-0.2% of zinc oxide, 4-8.5% of calcined petroleum coke, 1-3% of expansion graphite, 5-9% of boron containing phenolic resin, 3-5% of magnetite, 0.8-1.3% of heavy-burned magnesia, 0.8-1.5% of silicon carbide, 4-7.5% of barium sulfate crystal whisker, 0.3-0.5% of potassium titanate crystal whisker and 1-2.5% of alumina fibre; the ceramic brake pad made of the formula has lower density and excellent wear resistance, and is especially suitable for the middle-to-high grade sedan.