49results about How to "Increase reflective surface" patented technology

The invention relates to a compound water-based electromagnetic shielding coating, which is composed of conducting layer coating and insulating layer coating, weight proportions of each component of conducting layer coating are that emulsion 30-60 parts, conductive filler 40-50 parts, film forming additive 1-5 parts, thickening agent 0.5-1 parts, thixotropic agent 1-2 parts and pure water 10-15 parts. The weight proportions of insulating layer coating are that emulsion 90-95 parts, film forming additive 2-8 parts, thickening agent 0.5-1 parts and pure water 5-10 parts. The architectural emulsion is at least one of pure acrylate copolymer emulsion, styrene-acrylate copolymer emulsion and vinyl acetate- acrylate copolymer emulsion. The grain diameter of conducting nickel powder is micro grade, which has excellent oxidation resistance, and is combined with polymer emulsion, and electrical surface resistivity is greatly lowered. The shielding coating is coated on the inner surface of architecture according to the conducting/insulating/conducting mode, coating layer with the functions of conducting and electromagnetic shielding can be formed, the capabilities of resisting external electromagnetic interference and electromagnetic pollution can be effectively improved.

A laser beam projector has a laser light source that outputs a laser beam, a light projecting mirror for reflecting the laser beam outputted from the laser light source, a mirror driving device for oscillating the light projecting mirror so as to scan a specified area with the laser beam and piezoelectric elements attached to a back surface of the light projecting mirror. As a voltage is applied to the piezoelectric elements, the curvature of the reflecting surface of the light projecting mirror can be changed and the visibility angle of the light beam projector can be varied. A distance measuring device is formed with such a laser beam projector together with a laser beam receiver for receiving reflected waves of the laser beam from an object and a control unit for measuring the distance to the object based on the difference between the time of projecting the laser beam and the time of receiving the reflected waves by the laser beam receiver as well as the direction of the object from the direction of the projected laser beam.

The invention provides a display device. The display device comprises a display panel, a light guide plate and a rubber frame. The display panel has a display area. The light guide plate overlaps thedisplay area and has a light emitting surface and a side wall connected to the light emitting surface. The rubber frame comprises a reflecting surface, a high-reflectivity material part and a low-reflectivity material part. The reflecting surface faces the side wall of the light guide plate. The high reflectance material portion is configured to bear the display panel. The low-reflectivity material part is connected to the high-reflectivity material part, and the reflectivity of the low-reflectivity material part is lower than the reflectivity of the high-reflectivity material part. At least one junction of the high-reflectivity material part and the low-reflectivity material part is arranged on the reflecting surface. At least one junction and the side edge of the display area are provided with a connecting line, and an included angle equal to or smaller than 45 degrees is formed between the connecting line and the light-emitting face. The display device provided by the invention is good in light emitting uniformity at different visual angles.

The invention relates to an electric tower bird repelling device which comprises a supporting rod, a rotation arm and a reflecting mirror, wherein the rotation arm rotates around the supporting rod. The electric tower bird repelling device is characterized in that a lens on the reflecting mirror is arranged to be a double-faced lens, a mirror handle with a connection hole is arranged on the reflecting mirror, the reflecting mirror is connected with the rotation arm in a clearance fit mode through the connection hole in the mirror handle. A positioning hole and a positioning screw are arranged on the mirror handle. A reflecting lens with an upward lens face is arranged on the rotation arm. The electric tower bird repelling device has the advantages that the reflecting frequency and the reflecting face of the bird repelling device are increased by one time, the angle of the reflecting mirror can be freely adjusted and thus, the reflecting coverage face is enlarged and the bird repelling effect of the bird repelling device is greatly enhanced.

The invention relates to a tunnel type multi-mode microwave resonant cavity with a rotation function. The microwave resonant cavity consists of a hollow hexagonal prism, HFSS (High Frequency Structure Simulation Software) is used for simulating and positioning the positions of four microwave energy feedback holes, four microwave tubes with total 4KW independently feed microwave energy from different directions, the energy distribution of the microwave resonant cavity is improved through electromagnetic wave energy feedback simulation, and microwave energy focus points in the resonant cavity are obviously reduced; meanwhile, a pipeline installation position is designed on the middle position of the resonant cavity, pipelines made of low-microwave adsorption materials including ceramics and glass can be assembled; and the pipeline which finishes being installed can rotate under the driving of a rotation device, and materials in the pipeline can be subjected to even microwave radiation. In the field of environment protection, the microwave resonant cavity is suitable for processing agriculture and forestry waste materials, waste rubber, waste plastics, waste printing circuits and the like, can carry out intermittent batch processing, can be combined with other piece of conveying processing equipment to realize fluidization operation, has the advantages of simple structure and high practical application value and is favorable for industrial popularization.

The invention discloses a method for compounding membranous type materials on the concave surfaces of plastic parts and a wave collector manufactured using the method. The plastic die adopted in the method is a stretching die. Before plastic is moulded, edges of flatly spread membranous type materials are held down; the membranous type materials are stretched with a terrace die; subsequently, the plastic is moulded, thus forming concave surfaces compounded with membranous type materials. The collector having the concave surface (including a metallic foil layer) of a paraboloid manufactured by using the method keeps the design advantages of reducing the number of plastic parts, and the metallic reflection layer which is a precondition necessary for the collector.

The invention discloses magnesium alloy with high strength and ductility and high electromagnetic shielding performance and a thermo-mechanical treatment method thereof. The magnesium alloy comprises,by mass, 3%-16% of Gd, 0.2%-1% of Ca and 0.02%-0.2% of Zn, and the mass ratio of the Ca to the Zn is larger than or equal to 3; or the magnesium alloy comprises, by mass, 3%-16% of Gd, 0.2%-1% of Ca,0.2%-3% of Al and the balance Mg, and the mass ratio of the Ca to the Al is larger than or equal to 0.2. A magnesium alloy ingot blank can be prepared by means of semicontinuous casting, the ingot blank is hot-rolled or hot-extruded into boards with the thicknesses being 5-25mm, ageing and water quenching are carried out after solution treatment is completed, the boards are further truly stresseduntil deformation is 0.02-0.1, and then ageing and water quenching are performed. According to the magnesium alloy with high strength and ductility and high electromagnetic shielding performance andthe thermo-mechanical treatment method thereof, the alloy internally includes a cellular microstructure formed by cylindrical surface precipitated phases, cylindrical surface dislocation, base surfaceprecipitated phases and base surface dislocation together, the synchronous improvement effect on the mechanical property and electromagnetic shielding effects is remarkable, and the bottleneck that the high strength and ductility and high electromagnetic shielding performance of magnesium alloy cannot be compatibly achieved is broken through.

The invention provides a reverse modulation device based on a micromirror array structure. The device comprises a receiving means (1), a first photoelectric converter (3), A first codec (4), A cat's eye device (5), a micromirror array (6) and a driver (7), wherein, the receiving device (1) receives the inquiry light and transmits the inquiry light to a first photoelectric converter (3), the firstphotoelectric converter (3) converts the optical signal into an electrical signal, the first codec (4) encodes the electrical signal to generate a time series code, and sends the time series code to the driver (7); The cat's eye device (5) receives the modulated light and converges the modulated light to the micromirror array (6). The driver (7) drives at least one reflective micromirror in the micromirror array (6) to rotate according to a time series code so that the modulated light is reflected back to the original direction. On the other hand, the invention also provides a reverse modulation method based on a micromirror array structure.

The invention relates to low-water-absorption heat-preservation hard melamine foam and a preparation method thereof, and belongs to the technical field of high polymer materials. According to the low-water-absorption heat-preservation hard melamine foam, the density is smaller than 53 kg/m<3>, the water absorption is as low as 6.7%, the heat conductivity coefficient is as low as 0.034 W/m.K, the percentage of closed area reaches 80%, the compression strength reaches 300 kPa, and the limit oxygen index reaches up to 35%. In the preparation process, short-chain hydrophobic alcohol micromolecules and solid filler are added; a 'suspended' short-chain hydrophobic alkyl group is introduced into a side group of a molecular chain of a melamine resin prepolymer modified by short-chain hydrophobic alcohol micromolecules, so that the hydrophobicity of the resin is effectively improved, and meanwhile, the content of the 'suspended' short chain with relatively good flexibility is increased, so that the toughness of the resin can be improved, and the foam pulverization rate is reduced. In the preparation stage of the modified hydrophobic melamine prepolymer foaming liquid, a solid filler is added as a nucleating agent to adjust a foam structure, and free energy barriers for growth of bubble nuclei can be effectively reduced to promote heterogeneous nucleation, so that the low-water-absorption heat-preservation hard melamine foam which is small in foam size and uniform in distribution is prepared.

The invention discloses expanded graphite filler external wall insulating paint and a preparation method thereof. The paint is prepared from the following substances in parts by weight: 20-40 parts ofemulsion, 10-20 parts of filler, 5-10 parts of additives, 10-30 parts of water and 10-30 parts of expanded graphite. The preparation method comprises the following steps: (1) sufficiently mixing theemulsion and expanded graphite in weight parts, adding the water in the weight part, stirring until the substances are uniformly mixed to obtain mixture I; (2) uniformly mixing a thickening agent, dispersant, defoaming agent, film-forming agent, mildew preventive and pigment in weight parts to obtain the additives, keeping on stirring the additives and mixture I in weight parts until the substances are uniformly mixed to obtain a mixture III; and (3) slowly adding the filler in weight part into the mixture III, and keeping on stirring until the substances are uniformly mixed to obtain the external wall insulating paint.

A flame imitation manufacturing device of a fireplace relates to a flame imitation manufacturing device for simulating the burning state in a fireplace in the field of household appliances. Said device comprises a housing, a cross flow fan and a light source mounted on a base plate of the housing, a simulated fire chamber mounted on a back plate of the housing, ribbons mounted on the back plate of the housing by means of upper and lower strip bars and above the cross flow fan, and a light-transmitting glass plate mounted on the housing and in front of said ribbons. This invention, characterized in that said cross flow fan is a swinging one, is advantageous in that supplying wind non-directively by utilizing the swinging of said fan improves the flying state of ribbons so as to make the image state of burning flames more vivid, greatly enhances the authenticity of flames and lowers the cost thereof, and thus is adaptable to various flame imitation electrical-heated fireplaces and electrical appliances.

The embodiment of the invention provides a method for preparing a display substrate and a display substrate. The preparation method comprises: providing a substrate and sequentially forming a resin layer arranged between the substrate and a hardened layer and a hardened layer on the substrate; arranging a baffle at one side, facing the hardened layer; arranging a plurality of hollow structures having different width in a first direction parallel to the baffle at the baffle; moving the baffle or the substrate bank and forth in the first direction; carrying out plasma etching on the hardened layer and the resin layer at one side, away from the substrate, of the substrate by using a plasma device to obtain a resin layer having a wedge-shaped structure; and depositing a light-reflecting layeron the resin layer to obtain a display substrate. Therefore, the reflective surface of the resin layer becomes smooth; the effective reflection surface is increased; and thus the utilization ratio oflight is improved.