108results about How to "Has a shielding effect" patented technology

The invention discloses a configurational tree-shaped heat pipe radiator. The radiator consists of a high-thermal conductivity base plate, liquid-absorption cores, a radiating fin and working media, wherein narrow cavities are formed inside the base plate; the radiating fin is connected with the narrow cavities; communicated cavities are formed inside the radiating fin; the liquid-absorption cores are filled in the narrow cavities; the working media are filled in the narrow cavities and the communicated cavities; the radiating fin has a configurational tree-shaped structure and consists of a main communicated channel and at least two forked connection fins; the forked connection fins are arranged at the periphery of the main communicated channel circularly; and the communicated cavities inside the forked connection fins are communicated with the main communicated channel. The heat pipe radiator can quickly remove the heat which is generated by a plurality of (a single) local high-temperature heat flow heat source points (point) through phase change of the working media, so that local hot points are effectively eliminated, temperature of a heating surface of the heat pipe radiator is reduced, and safe, stable and efficient operation of electronic equipment is further guaranteed.

The invention relates to an anti-aging additive for improving asphalt aging characteristic and a preparation method of an anti-aging asphalt. The anti-aging additive is characterized by being prepared by evenly compounding organic montmorillonite, an antioxidant and a light stabilizer in a mechanical stirring manner, wherein the anti-aging additive comprises the following raw materials by mass percent of 72% to 84% of organic montmorillonite, 8% to 14% of antioxidant and 8% to 14% of light stabilizer. The anti-aging asphalt is prepared by the melt blending of 90% to 99% of asphalt and 1% to 10% of the anti-aging additive. According to the performance characteristics of the different raw materials in the invention, the anti-aging additive which has the good thermal stability and can obviously improve the thermo-aging resistance, the oxidative-aging resistance and the light-aging resistance of the asphalt is compounded; the anti-aging asphalt which has the good compatibility is prepared from the anti-aging additive, so that the synergetic effects on improving the thermo-oxidative aging resistance and the light-oxidative aging resistance of the different asphalts are achieved. The anti-aging asphalt prepared from the anti-aging additive is not only good in thermo-oxidative aging resistance but also excellent in light-oxidative aging resistance.

The invention relates to a shielded type printed circuit board, which comprises a printed circuit board, a shielding film and a strengthening component. The printed circuit board comprises a base component and an insulation film, wherein a circuit pattern used for ground connection is formed on the base component, the insulation film is arranged on the base component, the circuit pattern used for ground connection is covered by the insulation film, and an electronic component is connected at the installation place of the lower surface of the base component. The shielding film arranged on the printed circuit board comprises an electric conduction layer and an insulation layer, wherein the electric conduction layer is equipotential with the circuit pattern used for ground connection, and the electric conduction layer is arranged on the printed circuit board and is used for covering a part of a zone or the whole zone opposite to the installation place; and the insulation layer is arranged at the electric conduction layer. The strengthening component has electroconductivity and is arranged on the shielding film at the zone opposite to the installation place. The strengthening component is jointed with the insulation layer by electric conductivity cement containing spherical electric conductivity particles. The thickness of the insulation layer is less than the raising length of the electric conductivity particles from the electric conductivity cement under the joint state of the electric conductivity cement and the insulation layer, and the electric conductivity particles are in contact with the electric conduction layer under the joint state of the electric conductivity cement and the insulation layer.

A flame-retardant composite fireproof cable is characterized by comprising at least two cable cores, wherein each cable core is composed of twisted copper wire conductors each coated with a mica fireproof layer, an insulating damp-proof layer, an aluminum alloy interlocked armor barrier layer and a flame-retardant layer sequentially from inside to outside; the flame-retardant composite fireproof cable is composed of a cabling wrapping belt, an oxygen isolating layer, a ceramic fireproof layer, an interlocked armoring layer and a flame-retardant outer protective layer all of which are sequentially coated outside each cable core from the inside to the outside, and a flame-retardant filling material filled between the cable cores and the cabling wrapping belt.

The invention relates to modified epoxy-connected paint and a preparing method thereof. An A component of the paint is prepared by adding epoxy resin into a mixed solvent of xylene, n-butanol and cyclohexanone, adding copolymer of vinyl chloride and vinyl isobutyl ether, chlorinated rubber, acrylic resin, wet-method sericite, mica iron oxide, fumed silica, talcum powder, titanium dioxide, a polymethylalkyl siloxane solution and polyamide wax, mixing, stirring, and grinding. A B component of the paint is prepared by mixing a cashew nut shell oil modified phenolic aldehyde amine curing agent and a phenolic aldehyde amine curing agent, and stirring uniformly. During using, the A component and the B component are mixed uniformly. The paint can be used for intermediate paint of anti-corrosive primer, and antifouling paint, or chlorinated rubber finish or decorative finish so as to ensure good adhesive force.

The invention provides a method of fumigation treatment on a breading house of scatter-fed black pigs, and relates to the field of black pig breeding. The method comprises the steps that 25 parts by dry weight of asiatic wormwood, 3 parts by dry weight of radix gentianae, 5 parts by weight of radix angelicae dahuricae stems, 15 parts by weight of charcoal, 5-8 parts of loess which are dried in the sun are selected to be made into a fuel composition, the fuel composition is put into a fire pan and lighted to be fumigated by being put into a cave, when fumigation is conducted, the opening of the cave is sealed, the fire pan is connected with a rope which leads to the outside of the cave, the fire pan is made to move forwards by 20-30 cm by pulling the rope every five minutes, and the fire pan only needs to move to the cave for one time. The fumigation is conducted on the interior of the cave through hot flue gas produced by the fuel composition in the fire pan, germs on the surface of the cave or 5 cm deep inside the soil can be killed, mice and ants can be expelled, and the mice and the ants are prevented from opening a cavity to make a nest near the cave. For the black pigs in the cave, the functions of clearing heat, eliminating dampness and purging liver and gall fire are achieved, and dampness and chilliness are prevented from entering the bodies of the black pigs.

The invention relates to the processing field of building materials-man-made synthetic stone, in particular to a manufacturing method of nano synthetic travertine, solving the problems that the surface of current man-made synthetic stone lacks particle sealing and the inner part lacks a microcellular structure. The manufacturing method comprises the following steps: 1. aggregating and stirring, mixing intensively mineral sand, stone powder and binding agent; 2. feeding and mixing, adding light material-vitrified micro beads into the mixed base stock and mixing intensively; 3. distributing materials comprehensively, simultaneously spraying mixed color pastes onto the mixed base by utilizing an air sprayer; 4. vibrating and moulding, sawing and grinding to obtain a great plate with shiny side; 5. combining surface layer: preparing nano polyester surface layer material, spraying the mixing material onto the plate surface of a burnish great plate by utilizing the air sprayer; and 6. drying and slitting. The invention has reasonable technological process and strong actionability; the processed synthetic travertine products have the advantages of light weight, heat preservation, antibacterium, self-cleaning and representation of the romantic charm of natural travertine, thus being applicable to decorations of wall surface, ground surface and table facet of medium and high grade.

To simply realize fixing of cores and countermeasures against noises in an inductance element.The inductance element is mounted to a wiring board. A pair of cores 3, 4 are fitted into a coil bobbin 2, to which a winding is formed. The cores are clipped with a fixing metal fitting 5 made of metals and incorporated. The fixing metal fitting 5 has a shielding function and functions as a shield, to interrupt leakage magnetic fluxes of the inductance element. Also, since a terminal part for fixing to the wiring board 7 is provided to the fixing metal fitting 5, mounting state is reinforced.

The invention discloses fluorine-containing polyaspartic acid ester resin and a synthesis method thereof and relates to the technical field of synthetic resin. The method is mainly characterized in that a fluorine-containing group is introduced on the basis of an existing polyaspartic acid ester resin system, that is, fluorine is used for modification. Thus, fluorocarbon bonds in the resin can reduce surface tension, improve water contact angle, enhance the hydrophobic property of a material and improve surface pollution resistance and icing resistance. Besides, fluorine atoms and carbon-carbon bonds form a spiral structure having a shielding effect on a main chain, so that in the molecular structure, besides the coronary structure of polyaspartic acid ester, more spiral structures can further improve the protection effect on the main chain, and the risk of damage of the main chain is reduced through dual insurance. The resin is particularly suitable for preparation of high-performanceanticorrosive coatings resistant to wear, aging, gloss loss, color change, high temperature and the like.

The invention discloses a Collapsible volume array type low-frequency transformer substation noise nephogram test device and a test method. The device comprises a movable pedestal, a fixed disk, a floating disk and several array arms; the fixed disk is mounted on the movable pedestal through a mounting rack, a track is arranged on the fixed disk, the floating disk is mounted on the track, and a camera is arranged on the fixed disk; each array arm is connected on the fixed disk through hinge joint, each array arm is connected with the floating disk through one connection rod, and two ends of the connection rod are respectively connected with the array arm and the floating disk through hinge joint; each array arm is provided with several sound sensors; and the camera and a signal output endof each sound sensor both are connected with a data acquisition processing device. The array arms of the device provided by the invention can be collapsed and keep constant size, movement of the wholedevice can be realized through the movable pedestal, a virtual large-size array can be synthesized through phase compensation and special position compensation, and consequently, relatively accuratetest for the low-frequency noise in the transformer substation can be realized.

The invention discloses high-density tungsten alloy heat and humidity resistant anticorrosive paint which is composed of priming paint and finishing coat, wherein the priming paint is composed of isopropanol, softened water, fluoroalkyl silane and acetic acid; the finishing coat is composed of a component A and a component B; the component A is composed of epoxy resins, lemon yellow, titanium dioxide, talcum powder, kaolin, mica powder, a dispersing agent, a flatting agent, a mixed solvent and the like; and the component B is composed of polyisocyanates, a mixed solvent and a catalyst. In the using process, the tungsten alloy is subjected to dip-coating treatment by using the priming paint and then coated by the finishing coat. The high-density tungsten alloy subjected to anticorrosive coating can meet the requirement of long-term heat and humidity resistance, so that the tungsten alloy can be used for a long time in a hot and humid environment.

The invention provides a scallop meat-containing compound seasoning and a preparation method thereof. The preparation method comprises the following steps of firstly, taking fresh scallops as raw materials, and performing cleaning, short-time steaming with boiling water and shelling to obtain scallop meat; secondly, degreasing the scallop meat and preparing meat paste; thirdly, carrying out enzymolysis treatment on the meat paste by neutral protease, bromelain and papain to obtain an enzymatic hydrolysate; and finally, mixing the enzymatic hydrolysate with tricholomagambosum enzymatic hydrolysate and pre-fermented fresh tea leaves, steaming a mixture with boiling water to be cooked, performing cooling, adding isomaltitol, inoculating aspergillus oryzae, saccharomycetes and bifidobacteria for fermentation, and performing post-treatment to obtain the solid compound seasoning. The compound seasoning has extremely good water solubility, effectively removes the fishy smell of the scallop meat, and remains the unique flavor of the scallop meat.

The invention relates to woven bags and particularly discloses an aging resisting plastic woven bag. The aging resisting plastic woven bag is prepared from the following raw materials in parts by weight: 50 to 80 parts of polypropylene, 30 to 40 parts of polystyrene, 15 to 22 parts of epoxy resin, 5 to 13 parts of an antiager, 3 to 7 parts of dibutyl phthalate, 3 to 8 parts of nano calcium carbonate, 2 to 4 parts of ferrous sulfate, 0.5 to 2.5 parts of a coupling agent, 0.6 to 1.5 parts of zinc stearate, 1.5 to 4 parts of quartz powder, 3 to 7 parts of an antioxidant, 1 to 5 parts of a dispersing agent and 3 to 7.5 parts of a defoaming agent. The aging resisting plastic woven bag disclosed by the invention has excellent aging resistance.