42results about How to "No pulverization" patented technology

The invention discloses colorful heat insulating and waterproof building paint, which comprises the components in parts by weight as follows: 20-30 parts of styrene-acrylic emulsion, 20-30 parts of natural rubber resin, 3-10 parts of paint dispersant, 10-15 parts of ethylene glycol, 0.5-1 parts of defoamer, 10-20 parts of pigment, 30-50 parts of low heat conductive coefficient filler, 4-8 parts of white carbon black and 10-15 parts of water. The colorful heat insulating and waterproof building paint is abundant in color, and can well meet the requirement of colorful outer wall paint of buildings with excellent heat insulating and waterproof effects which are same as those of white paint. The paint contains neither heavy metals nor formaldehyde and is relatively beneficial to health of human bodies. The paint is applicable for concrete pavements, asphalt pavements, plastic pavements, pavements of glass fiber reinforced plastics, and metal pavements, and is convenient to construct in ways of spray coating, brush coating and rolling coating.

The invention discloses a fluoro olefin copolymerization fluororesin with a fluoric lateral group or a fluoric branched chain, the resin is hexabasic copolymer which is formed by polymerizing fluoro olefin (trifluorochlor oethylene, tetrafluoroethylene), vinyl ether with a branched chain or a fluoric branched chain (lateral group) structure, alkyl vinyl ester, alkyl vinyl ether, hydroxyalkyl vinyl ether and olefine acid, the appearance of the fluoro olefin copolymerization fluororesin is colourless and faint yellow transparent liquid, the hydroxyl value (mgKOH/g) is 40-60, the acid value (mgKOH/g) is 6.5-13, dry resin fluorine content (%) is 35-45 percent, and the viscosity coefficient ((coating-4)25 DEG Cs) is 60-80. The fluoro olefin copolymerization fluororesin improves the solvent resistance of the fluorine coating, solves the technical problems of high-performance fluorine coating with good fluorine content and good dissolubility and constructability can not be synthesized originally and has the advantages of high fluorine content and low crystallinity.

The invention discloses an iron-based catalyst prepared by a sol-gel combustion method, which is characterized by containing a metal element Fe, a metal element A and a metal element B, wherein A is at least one selected from the group consisting of Mn, Co, Cu, Zn, Ti, Al, Cr, Ni, Ce, and Zr; B is at least one selected from the group consisting of Li, Na, K, Mg, and Ca; each metal element exists in the form of a metal simple substance and/or a metal oxide; and the content of the metal element A in the catalyst is 0.1-50 wt%, the content of the metal element B in the catalyst is 0.01-40 wt%, and the content of the metal element Fe in the catalyst is 50-99 wt%, based on the total amount of the metal elements contained in the catalyst. The catalyst has good resistance to carbon deposition, is used for reaction of preparation of low-carbon olefins by use of synthetic gas, and shows higher catalytic activity and low-carbon olefin selectivity.

The invention discloses a colorful pavement brick and a preparation method thereof. The colorful pavement brick is formed by compounding a base layer, a colorful surface layer and a covering layer, wherein the base layer of the colorful pavement brick is completely made of reclaimed building rubbish and RAP, so that waste materials are sufficiently utilized; the colorful surface layer is arranged on the base layer, so that a great quantity of resources are saved, and the preparation is simple. The colorful pavement brick is free from maintenance, is high in corrosion resistance and weather resistance, is economical and environmentally friendly, and beautifies the environment. The colorful pavement brick has the characteristics that the compressive strength is 15.8-16.7MPa, the wear resistant length is 7.6-8.4mm, and the freezing and thawing strength loss rate is 4.1-4.7%.

A method of manufacturing self-cleaning polyurethane synthetic leather highly resistant to hydrolysis and highly resistant to ultraviolet light illumination aging is disclosed. The method includes steps of fluorine containing polyurethane modifying, transfer membrane preparing, adhering, and the like. The method includes modifying the polyurethane resin with fluorine containing polyether glycol, glycerol and polyisocyanate under functions of a catalyst to prepare the fluorine containing polyurethane, evenly coating the front surface of release paper with the fluorine containing polyurethane slurry, drying, evenly coating a surface film with fluorinated acrylate modified polyurethane prepolymer slurry comprising a solidification crosslinking agent as an adhesive layer, adhering to a woven fabric base, drying, cooling, sizing, stripping from the release paper to obtain a semi-finished product, and curing at room temperature to obtain a finished product. The product prepared by the method has excellent hydrolysis resistance and resistance to ultraviolet light illumination aging, and can be widely used for sofa furniture and shoe fabrics in high-temperature high-humidity using environments.

The invention discloses ferro-aluminum balls and preparation and application methods thereof. The ferro-aluminum balls are prepared from the following components in percent by mass: 40-45% of aluminumand the balance ferrum and inevitable impurities. The preparation method comprises the following steps: weighing metal aluminum powder and metal ferrum powder; uniformly stirring the powder by a stirrer; and pressing the powder into balls by using a high pressure ball press machine. The application method comprises the following steps: measuring components of molten steel in a later converter blowing stage and stopping smelting and tapping when the carbon content and the oxygen content reach process demands; and when 1/3 steel is tapped, determining the addition of the ferro-aluminum balls according to oxygen content in the molten steel and acid soluble aluminum of the molten steel and adding the ferro-aluminum balls into steel ladles through an overhead bunker. The ferro-aluminum balls have the advantages that (1) the product per ton is low in energy consumption and the preparation process is simple; (2) the content of impurities in the product is small, and no adhesives are added; (3) the product can be stored for a long time without a pulverizing phenomenon; (4) the product is moderate in density and is high in yield during use; and (5) the product is high in production efficiency and the balling rate can reach over 90%.

The invention discloses inorganic composite modified interior wall flame-retardant and mildew-proof water paint and a method for preparing the same. The inorganic composite modified interior wall flame-retardant and mildew-proof water paint comprises, by weight, 38-45 parts of modified silica sol, 26-50 parts of pigment and fillers, 5-10 parts of self-made wax water, 1-3 parts of styrene-acrylic emulsion, 0.5-1 part of celluloses, 0.5-1 part of coalescing agents, 0.5-1 part of propylene alcohol, 0.3-1 part of dispersing agents, 0.5-1 part of defoaming agents, 0.2-0.8 part of thickeners, 0.3-0.6 part of multifunctional auxiliaries and 16-27 parts of water. The inorganic composite modified interior wall flame-retardant and mildew-proof water paint and the method have the advantages that theinorganic composite modified interior wall flame-retardant and mildew-proof water paint prepared by the aid of the method is good in acid and alkali resistance and water resistance and excellent in flame retardance and antibacterial and mildew-proof property; the inorganic composite modified interior wall flame-retardant and mildew-proof water paint does not contain formaldehyde or other organic solvents, is low in odor and is environmentally friendly and safe, heavy metal is omitted, and the VOC (volatile organic compound) content is close to zero.

The invention discloses a method for performing boron and iron separation on paigeite, and the method comprises the following steps: pelletizing paigeite, a reducing agent and binders into pellets so as to obtain paigeite pellets; reducing and roasting the paigeite pellets in a rotary hearth furnace so as to obtain reduzate; melting and separating the reduzate so as to obtain molten iron and boron-rich slag containing boron trioxide. The boron and iron separation can be effectively performed on the paigeite by utilizing the method. Compared with the prior art, the method has the advantages of low requirements for rotary hearth furnace temperature and furnace bottom, high iron and boron recovery rates, high paigeite utilization ratio, less erosion to equipment, and can be used for obtaining reduced iron with good strength.

The invention discloses high-temperature-resistant and corrosion-resistant waterproof paint. The waterproof paint is prepared from, by weight, 40-65 parts of phenolic resin, 32-46 parts of methyl acrylate emulsion, 23-40 parts of methyl acrylate emulsion, 5-15 parts of n-Octyltrimethoxysilane, 6-18 parts of glycerin, 4-11 parts of calcium sulfate, 3-14 parts of aluminum chloride, 5-10 parts of aluminum oxide, 8-17 parts of talcum powder, 2-8 parts of sodium molybdate, 5-16 parts of short glass fibers, 2-10 parts of polyoxyethylene alcohol ether, 3-7 parts of isophorone diamine, 1-6 parts of diallyl 2,2'-oxydiethyl dicarbonate and 15-30 parts of deionized water. The invention further discloses a preparation method of the high-temperature-resistant and corrosion-resistant waterproof paint. The acid resistance, alkali resistance and salt corrosion resistance of the prepared waterproof paint are good, and the heat-resistance temperature ranges from 205 DEG C to 310 DEG C. The prepared waterproof paint has excellent high temperature resistance and corrosion resistance, and the application range of the waterproof paint can be expanded.

The invention relates to a high-speed temperature programmed reduction method for a catalyst. In order to solve the universal problems of long catalyst reduction time and great hydrogen consumption in present catalyst reduction equipment, the inventor puts forward the method of: during a catalyst reduction process, conducting on-line analysis for hydrogen concentrations in the inlet gas and outlet gas of a reduction furnace, and under a constant catalyst reduction space velocity, analyzing the difference of hydrogen concentrations at the inlet and outlet by a reduction control program, and adjusting the reduction temperature in the reduction furnace as well as the hydrogen concentration in the reduction gas. The method of the invention can guarantee the reduction of overall catalyst reduction time and the saving of hydrogen consumption based on fully reducing the catalyst, so that the overall processing period of the catalyst is substantially shortened and the catalyst production costis reduced, thus boasting extensive practical application value.

The invention relates to a modified hydroxypropyl methyl cellulose ether dry powder material, which comprises, by weight, 870-940 parts of hydroxypropyl methyl cellulose ether, 38-70 parts of polyvinyl alcohol, 10-23 parts of polyacrylamide, 10-20 parts of white carbon black, 5-18 parts of a polycarboxylic acid water reducing agent and 5-15 parts of hydroxypropyl starch ether. Compared with the traditional hydroxypropyl methyl cellulose ether, the exterior wall external thermal insulation plastering mortar prepared from the modified hydroxypropyl methyl cellulose ether dry material of the invention has the advantages of high water retention rate, high early strength, no powdering phenomenon and no cracking.

The invention relates to beta-dicalcium silicate and a preparation method thereof. The technical scheme comprises the following steps: mixing a calcium source, a silicon source and a barium source in a molar ratio of 1:(0.2-1):(0.02-0.05) to obtain a mixture; adding 80-120wt% of distilled water into the mixture and mixing uniformly; drying for 12-24 hours at 70-110 DEG C; performing fine grinding and mechanical pressing; preserving heat for 2-5 hours in an air atmosphere at 1,200-1,600 DEG C; and cooling along with the furnace to obtain beta-dicalcium silicate. In the technical scheme, the calcium source is one of calcium oxide, calcium hydroxide, calcium carbonate and calcium bicarbonate; the silicon source is silicon dioxide or metasilicic acid; and the barium source is one of barium carbonate, barium hydroxide and barium sulfate. The beta-dicalcium silicate has the characteristics of simple technology, low cost and easiness in operation; the prepared beta-dicalcium silicate has the advantages of no pulverization, high purity and few impurity phases; and a foundation is laid for widening the application of beta-dicalcium silicate in the field of silicate materials.

The invention discloses an aluminum-manganese alloy deoxidizing agent and a steelmaking deoxidizing method thereof. The aluminum-manganese alloy deoxidizing agent is characterized by comprising, by mass, 40-50% of aluminum, 30-40% of manganese, not more than 3% of inevitable impurity content, and the balance iron. The specific gravity range of the aluminum-manganese alloy deoxidizing agent is 3.0-4.5 g/cm<3>; and the aluminum-manganese alloy deoxidizing agent is in a shape of an ellipsoid, and the particle size range is 10-50 mm. The aluminum-manganese alloy deoxidizing agent has the advantages that (1) the ton product energy consumption is low, and a preparation process is simple; (2) the impurity content in products is small, and no adhering agents are added; (3) the products can be stored for a long time, and the pesting phenomenon is avoided; and (4) the products are large in specific gravity, oxygen in molten steel and top slag can be fast and efficiently removed, and meanwhile part alloying is performed on the molten steel; and compared with traditional deoxidizing agents such as titanium aluminum, silicon aluminum barium and aluminum iron, the deoxidizing capacity is high, and the purposes of purifying the molten steel and improving the molten steel quality can be achieved.

The invention discloses an aluminum manganese alloy deoxidizer for steelmaking, and a steelmaking deoxidization method thereof. The aluminum manganese alloy deoxidizer is characterized by comprising the following components: 60%-70% of aluminum, 15%-25% of manganese, no more than 3% of inevitable impurities and the balance iron; the specific gravity range of the aluminum manganese alloy deoxidizeris 3.0-4.5 g/cm<3>; and the aluminum manganese alloy deoxidizer is ellipsoidal, and the particle size range is 10-50 mm. The aluminum manganese alloy deoxidizer has the advantages that (1), the energy consumption per ton of products is low, and the preparation process is simple; (2), the content of the impurities in the products is low, and no binder is added; (3), the products can be stored fora long time, and no pulverization phenomenon occurs; (4), the specific gravity of the products is large, oxygen in molten steel and top slag can be removed quickly and efficiently; meanwhile, the molten steel is subjected to alloying partially; and compared with traditional titanium aluminum, silicon aluminum barium and ferro-aluminium deoxidizers, the aluminum manganese alloy deoxidizer has the beneficial effects that the deoxidizing capacity is high, and the purposes of purifying the molten steel and improving the molten steel quality can be achieved.

The invention discloses a preparation method of a composite film layer on the surface of a rare earth magnesium alloy structural part. The preparation method sequentially comprises the steps of oil removal, primary water washing, micro-arc oxidation, secondary water washing, electrophoresis, tertiary water washing and drying and curing. A micro-arc oxidation electrolyte is an aqueous solution containing sodium silicate, sodium fluoride, sodium hydroxide, graphene, Cu(NO3)2 and triethanolamine, electrical parameters of micro-arc oxidation are as follows: the positive current density is 5-15A/dm<2>, the negative current density is 2-3A/dm<2>, the positive duty ratio is 25-70%, the negative duty ratio is 40-50%, the positive frequency is 200-800Hz, the negative frequency is 300-500Hz, the positive and negative stages are both one stage, the micro-arc oxidation time is 10-20 min, electrophoresis liquid for electrophoresis is an aqueous solution containing acrylate, a delustering agent andcarbon black pigment, and electrical parameters of electrophoresis are as follows: the voltage is 50-80V, and the time is 10-30s; and through the coordination effect of micro-arc oxidation and electrophoresis, the composite film layer meeting the requirements of high hardness, high bonding strength and ultraviolet aging resistance at the same time can be prepared.

The invention discloses a eucalyptus wood board processing technique. The eucalyptus wood board processing technique comprises the steps that (1) eucalyptus wood boards are kept drying for 30-40 s at the temperature of 75-85 DEG C and under the pressure of 0.25-0.30 MPa, wherein a layer of quartz sand with the thickness being 0.05-0.1 mm is laid on a bottom layer where eucalyptus wood is placed firstly and used as a quartz sand layer, the eucalyptus wood boards are laid on the quartz sand layer, gauze is placed on the eucalyptus wood boards, and sawdust gauze with the thickness being 0.2-0.5 mm and sawdust are placed on the gauze, so that the eucalyptus wood boards are separated; and (2) dewatering is conducted, the total drying time in the whole dewatering process is 125 min, and the drying temperature is 55-65 DEG C. The eucalyptus wood boards obtained through the processing technique are free of cracks, good in tenacity and free of pulverization; the quartz sand and the sawdust are placed in the eucalyptus wood board drying process so that the drying water loss rate can be effectively increased, and the dried eucalyptus wood boards are better in quality and tenacity; and furthermore, the eucalyptus wood board processing technique is low in time consumption, energy consumption and cost.