1149results about How to "Not easy to collapse" patented technology

The invention relates to high-performance foaming cement, which comprises cement slurry and foams, wherein the cement slurry is prepared from the following raw materials in parts by weight: 100 parts of cement, 10-30 parts of gypsum powder, 10-50 parts of active admixtures, 10-40 parts of mineral admixtures, 1-5 parts of re-dispersible gelatine powder, 0.5-1.5 parts of cellulose ether, 0.2-1.0 part of water reducing agent, 0.1-0.5 part of water repellent and 40-90 parts of water; and the foams are prepared from the following components in parts by weight: 1 part of foaming agent, 0.2-0.8 part of foam stabilizer and 30-50 parts of water. A preparation method of the high-performance foaming cement comprises the steps of: (1) preparing the cement slurry; (2) preparing the foams by using a foaming machine; and (3) mixing and uniformly stirring the cement slurry and the foams according to the weight ratio of 1:(0.1-1), and pouring and molding. The high-performance foaming cement disclosed by the invention has high closed porosity and small shrinkage value, and integrates the performances of heat insulation, sound insulation, water repellent, shock resistance, fire protection, durability, low carbon and environmental protection into a whole.

The invention discloses a composite reinforced wear-resistant part of a metal-ceramic prefabricated member and a manufacturing method of the composite reinforced wear-resistant part. The manufacturing method comprises the steps as follows: uniformly mixing ceramic particles with self-fluxing alloy powder to obtain a mixture; filling a mould cavity of a pressing machine with the mixture, pressing by pressure, forming and demoulding, and placing biscuits and gaskets into a drying box for drying; placing the dried biscuits and gaskets into a vacuum furnace for sintering, cooling and discharging to obtain the metal-ceramic composite prefabricated member; carrying out sand blasting on the prefabricated member, and spraying a layer of nickel-based self-fluxing alloy powder onto the surface of the prefabricated member; and placing the processed fabricated member onto the end surface of a cast cavity, and pouring metal liquid formed by smelting metal matrix materials into the bottom of the cast cavity to obtain the composite reinforced wear-resistant part of the metal-ceramic prefabricated member. According to the manufacturing method, the wear resistance and the impact resistance of the composite wear-resistant part are improved.

An absorbent article comprising nonwoven fabric having convex and concave surfaces, and that allows liquid such as excreta and the like to permeate quickly. A sanitary napkin has a plurality of raised ridge portions and groove portions in a top sheet member. The fiber density of the side edge portions of each of the plurality of raised ridge portions in the thickness direction of the nonwoven fabric is substantially uniform, and is higher than the average fiber density in the raised ridge portions. The fiber density of the central portion between both the side edge portions of each of the plurality of raised ridge portions is substantially uniform in the thickness direction of the nonwoven fabric, and is lower than the average fiber density in the raised ridge portions.

The invention discloses a large-sized hollow cylindrical sampler for coarse grained soil and a use method thereof. The sampler comprises an annular sleeve and a vibrating compacter, two parts in all, wherein the annular sleeve comprises an annular base (1), an annular outer sleeve (2), an annular inner sleeve (3) and an annular extension barrel (4); and the vibrating compacter comprises a vibrating motor (7), a circular iron plate (12), a dowel bar (6), a positioner (8) and an annular iron plate (5). While using the instrument, a soil sample (9) is paved at first and then put into the annulariron plate (5); next, the vibrating motor (7) is turned on; when the edge of the annular outer sleeve (2) is level with the positioner (8), the vibrating motor (7) stops vibration and the next layer of soil sample (9) is added; and then vibration compaction is performed until the soil samples reach a predetermined height. The sampler is simple to use, convenient for operation and control, and capable of preparing a highly compact and even test sample, so that the time and labour for preparing the test sample are saved.

A melamine impregnated bond paper and chipboard compressed bright surface wood based board is composed of 60-70 portions of water, 100 portions of melamine, 90-130 portions of formaldehyde, diethylene glycol monoethylether 10-15 portions, aminocaprolactam 3.5-5.5 portions and caustic soda 0.3-0.6 portions. Firstly, it wipes off the powder on the surface of the chipboard, aligning them with melamine impregnated bond paper covering the chipboard, increasing the temperature, sending the chipboard and the paper into the compressing machine, ensuring the aligning of the center line of the chipboard and that of the compressing machine, closing the compressing machine, sending out the board, trimming, and getting the bright artificial board. It is bright, with good luster saturation, fine wearing resistance, heat, burning, crack, light and corrosion features.

The invention discloses an organic-inorganic hybrid mesoporous catalyst for purifying VOCs (volatile organic compounds) and a method for preparing the organic-inorganic hybrid mesoporous catalyst. SBA-15 mesoporous molecular sieves are used as carriers of the organic-inorganic hybrid mesoporous catalyst, organic groups (phenyl groups, amino groups and sulfhydryl groups) and transition metal oxide (oxide of Mn, Fe and Co) are used as active components of the organic-inorganic hybrid mesoporous catalyst, and chloride of alkali metal or alkaline-earth metal is used as an auxiliary of the organic-inorganic hybrid mesoporous catalyst. The specific surface area of the organic-inorganic hybrid mesoporous catalyst ranges from 700 m<2>/g to 900 m<2>/g, and the average pore diameter of pore passages in the organic-inorganic hybrid mesoporous catalyst ranges from 8 nm to 15 nm. The method includes supporting the organic groups on the SBA-15 molecular sieves by the aid of an in-situ solvent thermal synthesis process; modifying the SBA-15 mesoporous molecular sieves by the transition metal oxide by the aid of an impregnation process to obtain the organic-inorganic hybrid mesoporous catalyst. The organic-inorganic hybrid mesoporous catalyst and the method have the advantages that the organic-inorganic hybrid mesoporous catalyst has large mesoporous pore diameters and the large specific surface area and is high in catalytic activity, catalytic active constituents are good in dispersibility, acid centers can be reinforced, and the method is simple and feasible and is low in cost; the VOCs can be converted into harmless carbon dioxide and water under synergy of the organic-inorganic hybrid mesoporous catalyst and low-temperature plasma technologies at the normal temperature, and the organic-inorganic hybrid mesoporous catalyst has few byproducts and is difficult to inactivate.

The invention provides a low-silver halogen free soldering paste, which solves the problems that the existing soldering paste has high production cost and poorer soldering performance, and is not applicable to welding of components with precision spacing and the like. The low-silver halogen free soldering paste comprises the following components by weight percentage of 88 percent to 91 percent ofalloy welding powder and 9 percent to 12 percent of paste flux, wherein, the alloy welding powder comprises the following components by weight percentage of 0.1 percent to 0.9 percent of Ag, 0.1 percent to 0.8 percent of Cu and the balance Sn. The low-silver halogen free soldering paste has the advantages of low cost, good welding performance, no easy edge-collapse after printing and the like.

The invention provides a hollow silicon magnetic microsphere, as well as the preparation method and the application thereof. The hollow silicon magnetic microspheres have the preparation method that a polystyrene/silicon dioxide composite microsphere is used as a core; Fe3O4 coats the periphery of the core through the layer-by-layer self-assembly method; then, a PS/SiO2/Fe3o4 polymeric magnetic composite nanosphere is obtained, and polystyrene is removed through the high temperature sintering method, thereby forming a magnetic material with hollow structure; the inner layer of the hollow magnetic material is SiO2, and the stability is good, thereby the material is not easy to collapse at high temperature; furthermore, the specific surface area of the material can be improved, and the material is a monodisperse hollow magnetic microsphere material. The method has the advantages of low cost and good repetitiveness. The obtained product not only can be used as a magnetic targeting drug carrier material, but also can be used in the biological and the medical fields such as biosensors, immunologic diagnosis, drug delivery and tumor targeting therapy as well as DNA isolation, etc.

The invention provides a novel processing production line and a control method for plywood, and relates to the technical field of plate processing equipment. The novel processing production line comprises a glue coating device, a hot pressing device, cooling equipment and a trimming device, wherein the glue coating device comprises a front end bracket, a first groove, a first lifting device, a first plate support frame, glue coating equipment and a receiving frame; rollers are arranged at the top of the receiving frame; the hot pressing device comprises a hot press and plate conveyor belts mounted on two sides of the hot press; the cooling equipment comprises a cooling chamber, rails, a material conveying trolley and a cooling device; and the trimming device comprises a bracket, a transversal sliding rail, a sliding seat, a push rod, a first support, a second support, four cutting machines, a second groove, a second lifting device and a second plate support frame. The novel processing production line is reasonable in structural design, and can greatly improve the production efficiency of the plywood.

The invention discloses a preparation method of ellipsoidal nitrogen-doped mesoporous carbon. Ellipsoidal mesoporous silica is taken as a hard template, an organic high-molecular polymer is taken as a carbon source, a precursor containing nitrogen is taken as a nitrogen source, and ethanol is taken as a solvent. The preparation method comprises following steps: full immersing of the carbon source and the nitrogen source into the pores of ellipsoidal mesoporous silica is realized by stirring, and ellipsoidal mesoporous silica is dried after complete volatilization of ethanol so as to obtain nitrogen-doped ellipsoidal mesoporous carbon; in nitrogen atmosphere, nitrogen-doped ellipsoidal mesoporous carbon is heated to 600 DEG C at a heating rate of 1 DEG C/min, and is calcined for 2h, and then nitrogen-doped ellipsoidal mesoporous carbon is heated to 700 to 1000 DEG C at a heating rate of 2 DEG C/min, and is calcined for 2h so as to obtain an ellipsoidal mesoporous carbon/silica composite material; and then the ellipsoidal mesoporous carbon/silica composite material is stirred in an acid solution for 2h, and is centrifuged, washed and washed so as to obtain ellipsoidal nitrogen-doped mesoporous carbon. Stacking density of ellipsoidal nitrogen-doped mesoporous carbon is relatively high, and the mesoporous structure is orderly, so that ellipsoidal nitrogen-doped mesoporous carbon can be used as an electrode material for preparation of supercapacitors.

The invention provides a preparation method of a double-sided capacitor structure. The preparation method of the double-sided capacitor structure comprises the following steps: 1) providing a semiconductor substrate, and forming a stacked structure on the semiconductor substrate; 2) forming a graphical mask layer on the stacked structure, and etching a plurality of capacitance holes in the stackedstructure based on the graphical mask layer; 3) forming a lower electrode layer at the bottom and side walls of the capacitance holes; 4) forming a mask layer on the structure obtained by the step 3,and forming a mask opening on the stacked structure based on the mask layer, wherein the opening exposes 20% to 60% inner aperture area of the capacitance holes; and removing a sacrificial layer based on the mask opening; and 5) forming a capacitive dielectric layer on the inner and outer surfaces of the lower electrode layer, and forming an upper electrode layer on the outer surface of the capacitive dielectric layer. The invention adopts different opening modes to form the double-sided capacitor with denser density, stronger mechanical strength and guaranteed capacitance value through controlling the opening area of the capacitor and using a supporting layer etching gas source.

The invention discloses a polymeric nanofiber-based aerogel material and a preparation method thereof, and belongs to the fields of aerogel materials and preparation methods thereof. The preparation method comprises the steps that a thermoplastics polymer and cellulose acetate butyrate are subjected to melt blending, drawing, extracting and the like to prepare polymeric nanofibers, the polymeric nanofibers are added into water or a water solvent prepared from water and an organic solvent to generate polymeric nanofiber dispersion liquid, a cross-linking reaction is conducted to obtain cross-linked polymeric nanofiber suspension liquid, freeze drying is conducted on the cross-linked polymeric nanofiber suspension liquid, and then the polymeric nanofiber-based aerogel material is prepared. The polymeric nanofiber-based aerogel material prepared through the method has the advantages of being obvious in nanofiber porous structure, good in mechanical property and the like. The material prepared through the method can be applied to the fields of air filtration, thermal insulation, adsorption and the like directly or by being composited with other materials.

The invention belongs to the field of edible fungus cultivation and discloses a method for three-dimensionally cultivating white mushroom by a wall soil-covered cultivation process. The method comprises the following steps: building a pergola, producing fungus bags, preparing composite nutrient soil, ripping the bags and making a wall, and is characterized in that: white mushroom bags with hyphae are arrayed and vertically piled in the pergola, and are connected by the composite nutrient soil and the prepared nutrient soil so as to form rows of stable mushroom walls; and the method realizes the frugal three-dimensional cultivation of the white mushroom and effectively solves the problem that a cultivation material loses water. The wall soil-covered cultivation process of the invention creates a small climatic ecological environment for the white mushroom, can increase discharge per unit area, improve land utilization rate, achieve the effect of preserving moisture and increase the yield by 30 percent, breaks a new way for high-yield cultivation of the white mushroom without increasing cost and consuming energy, and can be popularized and applied in vast rural areas.

An electric connector includes a first housing including a guide shaft and a second housing including a guide hole into which the guide shaft is inserted, the guide shaft including a main body, and a projection radially projecting from the main body, the guide hole being formed at an inner surface thereof with a groove into which the projection is fit, the projection and the groove being formed such that a first imaginary line intersects with a second imaginary line, the first imaginary line being defined by extending a contact plane at which the projection and the groove make contact with each other when the first housing rotates relative to the second housing, towards a center of the main body, the second imaginary line being defined as a line bisecting a top surface of the projection and extending towards a center of the main body.

The invention relates to a wafer level scribing method for a CIS (Cmos image sensor) product, and belongs to the technical field of semiconductor packaging. The wafer level scribing method for the CIS product comprises the following processes: attaching a wafer (100) of the CIS product to a scribing film (400); cutting a structure except a glass layer (110) by a blade (200), and cutting the glass layer (110) by a laser (300); and performing splitting, film expansion and picking on the wafer (100) to form an independent single CIS product. The wafer level scribing method for the CIS product, provided by the invention, is high in scribing speed, good in scribing quality and low in production cost, and can be applied to a complicated product structure.

The invention relates to a gradient expansion device which is formed by expansion arm, cylinder, piston rod, axial pin, moving oil pipe, up-down connection disc, and connection rod group. Wherein, said cylinder is gradient hydraulic cylinder formed by big cylinder, middle cylinder and piston rod; the connection rod is connected to the gradient hydraulic cylinder; the big cylinder is connected to the middle cylinder; the middle cylinder is connected to the piston rod which is connected to the middle expansion arm; the middle expansion arm is connected to the upper and lower expansion arms via axial pins; the upper and lower expansion arms are individually connected to the upper and lower connection discs via axial pins; and the upper and lower connection discs are sheathed with connection rods. The invention uses direct horizontal expansion, with large expansion force, high speed, little disturb on soil, stable expanded chamber, high anti-cutting property, high efficiency, lower volume, lighter, and improved bearing ability, while it can solve the problem of using large-diameter multi-section expansion post to expand hole, to reduce the operation cost.

The invention discloses a cobalt-nickel-double-metal-hydroxide-nanosheet/carbon-nitride-coated nitrogen-doped hollow graphene sphere composite material and a preparation method thereof, and application as a supercapacitor electrode material. The composite material comprises a cobalt-nickel-double-metal-hydroxide-nanosheet/carbon-nitride-coated nitrogen-doped hollow graphene sphere has a 3D spherical appearance; and the specific surface area is 100 to 1000m<2>/g and the average pore diameter of 1 to 200mm. In addition, the preparation method includes the following steps: preparing a small polystyrene sphere; preparing a polyaniline-coated graphene sphere; preparing a carbon-nitride-coated nitrogen-doped hollow graphene sphere; and preparing a cobalt-nickel-double-metal-hydroxide-nanosheet/carbon-nitride-coated nitrogen-doped hollow graphene sphere composite material. Therefore, a problem of series agglomeration of the cobalt-nickel double-metal hydroxide unit structure during the traditional preparation technology process is solved effectively; and a novel method is provided for preparing an electrode material with advantages of large specific surface area, high flexibility, high electric capacity, and high stability.

An object of the invention is to provide a polyolefin resin foam which is excellent in flexibility, cushioning property and processability, especially excellent in cutting processability. The present invention relates to a polyolefin resin foam obtained by foaming a polyolefin resin composition using carbon dioxide in a supercritical state, wherein the polyolefin resin composition contains at least: (1) a thermoplastic elastomer composition obtained by subjecting to a dynamically heat treatment a mixture of (A) a rubber, and (B) (B-1) an α-olefin crystalline thermoplastic resin and/or (B-2) an α-olefin amorphous thermoplastic resin, each having a melt tension of less than 3.0 cN at a temperature of 210° C. and at a take-up speed of 2.0 m/min, in the presence of (C) a crosslinking agent; (2) a polyolefin resin; and (3) a nucleant agent having an average particle diameter of from 0.1 μm to less than 2.0 μm. The polyolefin resin foam has a density, for example, of 0.2 g/cm² or less.

There is provided a method for producing a honeycomb structure, including: a first step of mixing and kneading a ceramic raw material, an organic binder, a water-absorbing resin, and water to obtain clay, a second step of forming the clay into a honeycomb-structured shape and drying the clay to obtain a honeycomb dried body, and a third step of firing the honeycomb dried body to obtain a honeycomb structure having a porosity of 40% or more after firing. The method can suppress defects or deformation upon forming and improve a yield.