52results about How to "Uniform microporous structure" patented technology

The invention relates to SPME extracting fiber of a porous organic framework coating and a preparation method of the SPME extracting fiber. The SPME extracting fiber comprises a fiber carrier and a coating attached to the surface of the carrier, carrier fiber is base fiber with the surface subjected to hydroxylation, one end of the carrier fiber is coated with a coating material, and the coating material is a mixture of PAF-41 and glue. The PAF-41 is a porous organic framework material with a uniform micropore structure, a high specific surface area and a high aromatic property, the structurecharacteristics of the porous organic framework material have good affinity to fragrant volatile substances, the extracting efficiency of SPME can be improved, and therefore the sensitivity of targetdetection is improved.

The invention relates to a method for removing total nitrogen and ammonia nitrogen from blast furnace coal gas washing water, and belongs to the technical field of wastewater treatment. The method includes the following steps: performing filtration treatment on the blast furnace coal gas washing water containing the total nitrogen and the ammonia nitrogen to obtain filtered blast furnace coal gaswashing water; and performing adsorption treatment on the filtered blast furnace coal gas washing water by using a molecular sieve to obtain blast furnace coal gas washing water without total nitrogenor ammonia nitrogen to meet the discharge requirements, wherein the molecular sieve is a 13X type molecular sieve with a main cation of sodium, after the molecular sieve adsorption is saturated, regeneration is performed by using a 10% sodium chloride solution, the regenerated desorption solution containing high-concentration total nitrogen and ammonia nitrogen is subjected to electroredox by using a platinum electrode (with a ruthenium coating) to remove the total nitrogen and the ammonia nitrogen, and the desorption liquid (the content of total nitrogen is less than 15 mg / l, and the contentof ammonia nitrogen is less than 5 mg / l) treated by electroredox treatment can reach a standard to be discharged.

Provided are a millable silicone rubber composition, a millable silicone rubber sponge, and a method for producing said sponge. A method for producing a millable silicone rubber sponge having an opencell content of 20% or higher that heat treats at 200 DEG C or higher a silicone rubber composition of components (A)-(E): (A) organopolysiloxane having a degree of polymerization of 3000 or higher and having at least two alkenyl groups per molecule represented by the average compositional formula (I): R1 aSiO4-a / 2 [in the formula, R1 represent the same or different monovalent hydrocarbon groups and a represents a positive number of 1.95-2.04], (B) reinforcing silica, (C) thermally expandable microcapsules having an expansion start temperature of 90-150 DEG C that shrink 20% or more from the maximum expansion volume by heating for five minutes at 200 DEG C, (D) curing agent: organic peroxide, and (E) open cell-forming agent: solid high temperature decomposition-type organic foaming agent having a decomposition start temperature of 180 DEG C or higher, that contains a component that begins to decompose after curing of component (A) .

The invention relates to the technical field of battery diaphragm preparation, in particular to a battery diaphragm temperature control system for rechargeable batteries and a manufacturing method thereof. The system includes a raw material pretreatment module, an extrusion module, a casting module, a heat treatment module, a stretching module, A detection module and a control module, the manufacturing method includes step s1, feeding and pre-processing of raw materials; step s2, extrusion molding of the mixture; step s3, casting treatment and cooling to form a base film; step s4, heat treatment of the base film to form heat-finishing the film; step s5, stretching the heat-finishing film to form a microporous film. The invention detects and adjusts the temperature in the manufacturing process of the battery diaphragm by setting the detection module and the control module, so as to accurately control the temperature of each technological process in the manufacturing process, and effectively realize that the battery diaphragm can be set according to the setting during the manufacturing process. The temperature is processed to ensure that the battery separator forms a uniform microporous structure at a preset temperature.

The invention belongs to the fields of building materials and construction technology. Light-weight concrete consists of a concrete base layer and waterproof surface layers, wherein the concrete base layer comprises the following components in parts by weight: 100 parts of cement, 0.1-10 parts of chrysotile fibers, 0.01-2 parts of water repellent, 10-30 parts of pulverized fuel ash, 0.1-6 parts of water reducer, 50-200 parts of water, and 1-20 parts of foaming agent or air entraining agent; the upper side and the lower side of the concrete base layer are coated with the waterproof surface layers which comprise the following components in parts by weight: 100 parts of penetrating type organosilicon waterproofing agent, 0.1-20 parts of nano TiO2, 0-2 parts of activity enhancer, 0.01-5 parts of dispersion stabilizer, and 50-200 parts of solvent. Correspondingly, the microporous structure of the foam concrete or air-entrained concrete is uniform, and the mechanical performance is improved.

The invention is made of activated carbon fiber, short fiber, powdered activated carbon, modified cellulose and processing aids, etc. to make activated carbon fiber composite material, as the adsorption material of high-efficiency activated carbon filter element, overcomes the disadvantages of poor strength of activated carbon fiber felt and easy shedding The problem is that the rich and uniform microporous structure of activated carbon fibers is retained, and there are a large number of mesopores (ie, mesopores) of high-quality powdered and granular activated carbons, so the adsorption capacity is large, and the range of applicable organic matter is wide, and the material is prepared. The filter element is resistant to high temperature, acid and alkali, and can be widely used in the electroplating production line of the PCB industry.

The invention discloses a preparation method of an aluminum oxide porous material. The preparation method comprises the following steps of modifying an aluminum oxide powder by a magnesium phosphate sol, adding a manganese oxide micropowder as a sintering additive, and reducing the firing temperature of the aluminum oxide porous material to the temperature of 1200 to 1400 DEG C. The preparation method has the advantage that the good pore structure can be obtained for the porous material within the wide firing temperature range. The aluminum oxide porous material prepared by the preparation method has excellent mechanical property.