112results about How to "Break down evenly" patented technology

The invention relates to the field of products of sound insulation material, solves the problems in the prior art that the sound insulation material is poor in sound insulation effect, is incomprehensive in high and low frequency sound insulation, causes pollution and is easy to age, and provides an efficient sound insulation material and a manufacturing method thereof. The efficient sound insulation material includes a sound insulation layer, a sound absorption layer, and a bubble layer, wherein the bubble layer is located between the sound insulation layer and the sound absorption layer. The sound absorption layer is made of a sound insulation compound, and the sound insulation compound is prepared by raw materials of the following substances: a thermoplastic resin, inorganic fillers, and a foaming agent, wherein the inorganic fillers account for 15-80wt%, the foaming agent accounts for 5-15wt%, and the rest is the thermoplastic resin. In the efficient sound insulation material, the fillers with different particle diameters correspond to sound waves of different wave bands or frequencies, and thus consumption of sound energy of different frequencies is relatively comprehensive, and the sound insulation effect is good, so the sound insulation material is suitable for popularization and application.

The invention provides colloid palladium activation solution which comprises colloid palladium, sodium chloride, glyoxylic acid, hydrochloric acid, stannous chloride and stabilizer for stabilizing the stannous chloride, wherein the glyoxylic acid has strong reducibility and can avoid that divalent tin ions in the activation solution are oxidized, and prolong the service life of the action solution; simultaneously, the glyoxylic acid is adsorbed on the periphery of colloid palladium particles, thereby leading the dispersion of the colloid palladium to be more uniform, avoiding the gel coagulation among the colloid particles and enhancing the activity of the activation solution. The invention provides a preparation method of the colloid palladium, and the process is simple. In addition, the adoption of the colloid palladium activation solution for activating the surface of a non-metal substrate can firstly adsorb the glyoxylic acid in the activation solution on the surface of the non-metal substrate, enhance the bonding force between the colloid palladium particles and the non-metal substrate, leading a plated coating after chemical plating to have uniform thickness and flat surface, and leading the adhesion between the plated coating and the substrate to be very high.

The invention discloses a method for blasting plant biomass walls with oxygen, comprising the following steps of: firstly, adding ethanol, hydrogen peroxide with concentration of 30% and water to crushed plant biomass, mixing the materials to oxidize and soak the materials, and conveying the oxidized and soaked materials to an oxygen blasting tank via a feeding port of the oxygen blasting tank; secondly, sealing the feeding port of the oxygen blasting tank, regulating the temperature of the gas in the oxygen blast tank at 80-150 DEG C and the pressure within 1-4 MPa by conveying pressure air to the oxygen blasting tank, preserving heat and keeping pressure for 20-200 seconds to soak the plant biomass into ethanol, hydrogen peroxide with concentration of 30%, steam and water; and finally, completely opening the discharge port of the oxygen blasting tank within 3 seconds to reduce the pressure in the oxygen blasting tank to the normal pressure. The invention aims to provide the method for blasting plant biomass walls with oxygen, which can be used for completely and uniformly decomposing the plant biomass and realizing industrialization production and has high production efficiency.

The invention discloses a special cultivation substrate for dendrobium officinale. The special cultivation substrate comprises a bottom-layer substrate, a middle-layer substrate and an upper-layer substrate stacked sequentially from bottom to top, wherein the bottom-layer substrate is prepared from 10-20 parts of bean stalk or 15-25 parts of dry sugarcane leaves; the middle-layer substrate is a mixture of 5-15 parts of red brick powder, 15-30 parts of composted alcohol biogas residues and the like; the upper-layer substrate is a mixture of 15-35 parts of modified biological carbon, 15-45 parts of deadwood, 5-15 parts of expanded perlite and the like. The preparation method of the planting substrate comprises steps as follows: preparation of the modified biological carbon, preparation of the bottom-layer substrate, the middle-layer substrate and the upper-layer substrate and stacking of the bottom-layer substrate, the middle-layer substrate and the upper-layer substrate. The preparation method is simple and easy, the prepared planting substrate overcomes the defects that conventional substrates are rotten and air-impermeable and cannot hold water after being used for a long time, is low in cost, has rich nutrition and facilitates growth of dendrobium officinale, stems of dendrobium officinale grow more strongly, and root systems of dendrobium officinale are well developed.

The invention discloses a Dendrobium officinale culture medium, which comprises a base layer, a buffer layer and a medium layer, wherein the base layer, the buffer layer and the medium layer are successively overlaid from bottom to top; according to parts by weight, the base layer is prepared from 10-20 parts of dry wheat straw or 10-20 parts of dry sugarcane top, the buffer layer is prepared from the mixture of 5-10 parts of silkworm excrement, 10-20 parts of leaf mold and the like, and the medium layer is prepared from the mixture of 15-25 parts of modified charcoal, 15-45 parts of rotten wood or tree, 5-15 parts of expanded perlite and the like. The preparation method of the plantation medium is obtained by overlapping the preparation of the modified charcoal and the preparation of the base layer, the buffer layer and the medium. The preparation method is simple and easy to understand. The plantation medium prepared from the Dendrobium officinale culture medium overcomes the defects that the medium is rotten and airtight and does not realize water retention after the medium is used for a long time. The Dendrobium officinale culture medium has the advantages of low cost and complete nutrition, is favorable for the growth of Dendrobium officinale and accelerates the stem of the Dendrobium officinale to be thicker and the root system of the Dendrobium officinale to be developed.

The invention discloses an amorphous tetratin triphosphate/phosphorus/few-layer graphene negative material for lithium ion batteries and a preparation method and an application thereof. The negative material is formed by coating amorphous tetratin triphosphate and phosphorus with a few layers of graphene carbon. The preparation method includes the following steps: mixing and ball-milling tin powder and phosphorus powder to obtain tin triphosphate; and mixing the obtained tin triphosphate with expanded graphite and carrying out ball-milling to obtain the amorphous tetratin triphosphate/phosphorus/few-layer graphene negative material. The negative material prepared in the invention is matched with a lithium iron phosphate positive material, and a lithium ion battery assembled by using the negative material and the lithium ferrous phosphate positive material has the advantages of high capacity and stable cycle and has application potential. The preparation method of the invention has theadvantages of simple process, good repeatability, less time consumption and environment friendliness, and is conducive to actual industrial production.

The invention relates to a method and a device for soft burning of magnesium powder through a rotary kiln which relate to the technology of soft burning of magnesite pulverized powder, in particular to a method for producing the soft burning magnesium powder by utilization of the rotary kiln. The invention aims to provide a method for fair current soft burning of the magnesium powder through the rotary kiln with low investment, quickness in taking effect and high magnesia activity. The other aim of the invention is to provide a device for implementing the method. The method is as follows: materials and flame after magnesite is crushed enter from the high end of the rotary kiln, are led out from a draught fan on the outside of the low end, and perform fair current heat exchange in the rotary kiln. The device adopts the following structure: the rotary kiln comprises a kiln body; the high end and the low end of the kiln body are respectively provided with a support bracket; and motors on the support brackets are connected with the kiln body through driving mechanisms. The structural key points of the device are as follows: a material hopper and a burner are arranged outside an inlet on the high end of the kiln body, and the draught fan is arranged outside an outlet on the low end of the kiln body.

The invention discloses a dendrobium officinale planting substrate containing modified biochar, which comprises substrate A, substrate B and substrate C arranged sequentially from bottom to top; according to the ratio of parts by weight, substrate A is 10-20 parts of dry rice straw Or 10-20 parts of dry sugarcane leaves; substrate B is 5-20 parts of silkworm excrement, 10-30 parts of rice bran, etc.; 45 copies etc. The preparation method of the planting substrate is the preparation of modified biochar, the preparation of substrates A, B and C, and then superposition. The preparation method of the present invention is simple and easy to understand, and the planting substrate prepared by the present invention overcomes the long-term use of the substrate, rots and airtight, does not retain water, and has low cost and complete nutrition, which is more conducive to the growth of Dendrobium candidum, and promotes the growth of Dendrobium candidum Stronger and more developed root system.

The invention discloses a wild-imitating planting substrate for dendrobium huoshanense. The wild-imitating planting substrate comprises a bottom-layer substrate, a middle-layer substrate and an upper-layer substrate which are arranged in a manner of being superposed sequentially from bottom to top, wherein the bottom-layer substrate is prepared from 10-20 parts (by weight) of dried corn stalks or dried sugarcane leaves; the middle-layer substrate is prepared from a mixture of 5-15 parts (by weight) of vermiculite and the like; and the upper-layer substrate is prepared from a mixture of 15-35 parts (by weight) of modified biocarbon, 15-45 parts (by weight) of rotten wood and the like. A preparation method for the planting substrate comprises the steps of preparing the modified biocarbon, preparing the bottom-layer substrate, the middle-layer substrate and the upper-layer substrate and then carrying out superposition. The preparation method for the planting substrate is simple and easy to understand; and the planting substrate prepared by the preparation method has the advantages that the condition that the substrate is rotted, is air-proof and does not hold moisture in long-term use is overcome, the cost is low, the nutrition is complete, the growth of the dendrobium huoshanense is better facilitated, dendrobium huoshanense stems are promoted to grow more sturdy, and dendrobium huoshanense root systems are promoted to be more developed.

The invention discloses a dendrobium huoshanense special-purpose planting matrix, comprising a matrix A, a matrix B, and a matrix C which are arranged in an overlaying manner from bottom to top in sequence. According to weight part ratio, the matrix A contains 10-20 parts of dry sorghum stalks or 10-20 parts of dry sugarcane leaves, the matrix B is a mixture of 10-15 parts of silkworm excrement, 10-20 parts of mature ethyl alcohol biogas residue, etc., and the matrix C is a mixture of 10-25 parts of modified charcoal, 15-45 parts of rotten wood, 2-5 parts of a trichoderma spp agent. The manufacturing method for the planting matrix comprises: manufacturing the modified charcoal, manufacturing the matrixes A, B, and C, and overlaying to form the planting matrix. The manufacturing method is simple and easy to understand, and the manufactured planting matrix overcomes problems that a matrix is rotted and does not ventilate and does not retain water after long time use. The matrix is low in cost, complete in nutrition, and is beneficial for growth of the dendrobium huoshanense, and promotes stems of the dendrobium huoshanense to grow thicker, and roots to be more developed.

The invention provides a method for preparing ramie fibers through oxidation, degumming and repeated multiple-step feeding, which comprises three feeding processes and comprises the following specific steps: in the first feeding process, preparing a degumming solution from surfactant, a fiber expanding agent, peroxide stabilizer, a defoaming agent, sodium hydroxide, peroxide and water, mixing raw hemp of ramie and the degumming solution to form a degumming solution system, and heating to remove part of colloid; in the second feeding process 20-50 minutes later, adding peroxide and sodium hydroxide, and keeping the temperature to further remove the colloid; in the third feeding process 20-50 minutes later, adding peroxide, and further keeping the temperature until the reaction is finished and the colloid is completely removed; and finally, washing refined dried hemp fibers with clear water, oiling, drying, opening, and combing to obtain the prepared ramie fibers. The method provided by the invention overcomes the defects in the existing oxidation and degumming technology; a repeated multiple-step method is used, so that the reaction is uniform and moderate, the damage to the fibers caused by over too high initial concentration of initial concentration is reduced, and the quality of the refined dried hemp product is improved; and meanwhile, the ineffective decomposition of the peroxide and the consumption of the defoaming agent are reduced, thereby saving the cost.

The invention discloses a planting matrix for artificial planting of Caulis Dendrobii. The planting matrix comprises a matrix A, a matrix B and a matrix C which are sequentially stacked from bottom to top, the matrix A is composed of, in parts by weight, 10-20 parts of dry wheat straw or 10-20 parts of dry rice straw, the matrix B is a mixture of, in parts by weight, 5-10 parts of medium sand and 10-20 parts of leaf mold, and the matrix C is a mixture of, in parts by weight, 15-25 parts of modified biochar, 15-45 parts of rotten wood, 5-15 parts of expanded perlite and 10-35 parts of pine bark. The preparation method of the planting matrix includes: preparing the modified biochar, preparing the matrixes A, B and C, and stacking the matrixes A, B and C. The preparation method is simple and easy to understand, the planting matrix prepared by the method overcomes the defect that existing matrixes after being used for a long time are rotten and airtight and do not conserve water, and is low in cost, complete in nutrient, more conducive to growing of Dendrobium Officinale and capable of promoting stems of Dendrobium Officinale to grow thicker and stronger and promoting root systems to be more developed.

The invention discloses a low-emission TVOC foamed polypropylene product and a preparation method thereof and relates to the field of polypropylene products. The low-emission TVOC foamed polypropylene product is mainly prepared by taking nitrogen as foaming gas to foam. The raw materials comprises the following components in parts by weight: 70-80 parts of polypropylene resin, 0.5-2 parts of a deodorant, 1-10 parts of fibers, 5-15 parts of a coupling interlinking agent and 1-10 parts of a porous adsorption material. The foamed polypropylene overcomes the defect of high release amount of TVOC. The preparation method of the low-emission TVOC foamed polypropylene product comprises the following steps of: mixing the polypropylene resin with fibers; then mixing the mixture with the porous adsorption material and the coupling interlinking agent to form a mixture; and extruding the mixture to foam under the action of nitrogen. By using nitrogen to foam the polypropylene resin, in addition to the action of adsorption, coupling cross-linking reaction and fibers, purposes of reducing the TVOC content of the foamed polypropylene and improving the odor grade are achieved.

The invention relates to a repaglinide/metformin combo tablet, particularly a pharmaceutical composition in the form of a tablet, which comprises the following components in parts by weight: 500 parts of metformin hydrochloride, 0.5-5 parts of repaglinide and 10-200 parts of medicinal auxiliary materials. The medicinal auxiliary materials include, but are not limited to filler, disintegrant, binding agent, alkali and lubricant. The invention also relates to a method for preparing the pharmaceutical composition. The pharmaceutical composition provided by the invention has favorable pharmaceutical properties.

The invention discloses nutrient soil for orchid plant culture. The nutrient soil is characterized by comprising the following raw materials in part by weight: 20-40 parts of pine bark, 20-40 parts of grass carbon, 20-40 parts of walnut shell, 5-15 parts of vermiculite and 5-15 parts of bamboo carbon. The nutrient soil is suitable for all orchid plants and improvement of disease resistance, and can provide higher-ratio long-acting solid phase organic matters, stable pH value and good water and air control performance. Therefore, the culture management of the orchid plants is more convenient, the root systems of the orchid plants are promoted to grow and then are quickly rejuvenated, the color of orchids is kept, the fragrance of the orchids is stronger, and the orchids are more beautiful. The nutrient soil can be suitable for orchid culture in household balconies and can also be used for industrial large-scale production.

The invention relates to a homo-polypropylene/carbon fiber/montmorillonite composite material and a preparation method of the homo-polypropylene/carbon fiber/montmorillonite composite material. The homo-polypropylene/carbon fiber/montmorillonite composite material is prepared from the following raw materials in parts by weight: 85 to 95 parts of homo-polypropylene, 5 to 10 parts of carbon fibers, 2 to 3 parts of organic montmorillonite, and 3 to 5 parts of foaming masterbatches, the foaming masterbatches are prepared from the following raw materials in parts by weight: 60 to 70 parts of polyethylene, 20 to 30 parts of foaming agents, 1 to 3 parts of foam stabilizers, 3 to 5 parts of nucleating agents, 0.5 to 1.5 parts of zinc oxide, 0.5 to 1 part of a titanate coupling agent NDZ-201, 3 to 5 parts of PE wax and 0.5 to 1 part of zinc stearate. According to the homo-polypropylene/carbon fiber/montmorillonite composite material disclosed by the invention, the mechanical properties are excellent, the tensile strength reaches 36.9 MPa, the impact strength reaches 55.1 kJ/m<2>, and the flexural modulus reaches 1590 MPa. The foaming material has best foaming and biggest cell density, the cell density reaches 2.3*10<7>/cm3, and the porosity of the foaming material is 17.7%.

The invention discloses a composite foaming agent and a polypropylene foam material prepared from the same. The foaming agent comprises the following components in parts by weight: 100 parts of azodicarbonamide, 10-20 parts of N,N'-dimethyl-N,N-dinitrosoterephthalamide, 10-30 parts of zinc oxide and 10-30 parts of sodium citrate. The polypropylene foam material comprises the following blended components in parts by weight: 100 parts of high-melt strength polypropylene and 3-15 parts of composite foaming agent. The composite foaming agent disclosed by the invention has controllable foaming temperature, uniform foam cell, smooth surface and high physical heat resistance; and the polypropylene foam material prepared from the composite foaming agent meets the environmental protection requirement, is degradable and low in production cost, and is suitable for continuous large-scale production.

The invention relates to a forging technology for automobile aluminum alloy chassis class parts. The forging technology comprises the following steps: 1), heating an aluminum alloy blank to a solid dissolving temperature and preserving heat so as to fully dissolve a strengthening phase; 2), carrying out forging molding on the aluminum alloy blank preserving heat; 3), carrying out quenching treatment on an aluminum alloy forged piece molded; and 4), carrying out aging treatment on the aluminum alloy forged piece quenched. The technology reduces production cycle and production cost and improves production efficiency under the condition of fully meeting product performance requirements.

The invention relates to the technical field of ceramic materials, and provides a high-strength aluminum nitride ceramic substrate and a preparation method thereof. The high-strength aluminum nitride ceramic substrate comprises the following raw materials by weight: 78-85 parts of modified aluminum nitride powder, 36-42 parts of a solvent, 1.2-2 parts of a dispersant, 8-11 parts of a binder and 2-4 parts of a plasticizer; and the aluminum nitride ceramic substrate is prepared through the procedures of ball milling, vacuum foaming, tape casting, isostatic pressing, rubber discharging, primary sintering and secondary sintering in sequence. The thermal conductivity of the prepared aluminum nitride ceramic is 180 W/(m.K) or above, the bending strength is 520 MPa or above, and the problem that the bending strength of the aluminum nitride ceramic is not high in the prior art is solved.

The invention discloses a 165-steel-grade drill rod weld joint heat treatment method. A drill rod weld joint is formed by conducting friction welding on a drill rod connector and a drill rod pipe body, the steel grade of the drill rod connector is 135 ksi, and the steel grade of the drill rod pipe body is 165 ksi. The 165-steel-grade drill rod weld joint heat treatment method comprises the steps of 1 quenching, 2 first-time tempering and 3 second-time tempering, wherein during the second-time tempering of the step 3, the center of a tempering coil is aligned to the position, deviating from one side of the pipe body, of the weld joint for 8-12 mm. The 165-steel-grade drill rod weld joint heat treatment method reduces the side hardness of the weld joint pipe body and makes the structure of a whole welding area more uniform, better comprehensive mechanical properties are obtained, and the service life is prolonged.