54results about How to "Weak conductivity" patented technology

The invention discloses a transformer oil fire extinguishing agent. The transformer oil fire extinguishing agent comprises, by weight, 20-30 parts of an oil-in-water type emulsifying agent, 5-20 partsof a turbidity point improving agent, 3-15 parts of a surface spreading agent, 1-5 parts of a negative combustion catalyst, 1-5 parts of a near-fire gelatinizing synergist, 0.1-3 parts of a corrosioninhibition auxiliary and 40-60 parts of water. The invention further provides a fire extinguishing system for a transformer, and the fire extinguishing system adopts the transformer oil fire extinguishing agent. The substances in the transformer oil fire extinguishing agent are low in electric conductivity and high in insulating property and achieve the synergistic effect, and therefore the finally-obtained composite fire extinguishing agent has the advantages that the insulating property is high, the fire extinguishing efficiency is high, and electrifying is safe and reliable. In addition, water mist sprayed by the fire extinguishing system for the transformer is high in insulating property, electrified fire extinguishing can be achieved, and the outdoor wind resistance is achieved.

A device for measurement of a thickness of a coating applied to a substrate includes a transmitter/receiver module configured to transmit and receive microwave radiation; a computing unit; and a probe having a flange and an inner and an outer conductor, wherein the outer conductor coaxially surrounds the inner conductor, and wherein the inner conductor includes at least one thickened section.

The invention relates to the field of preparation of consumables of printing products, in particular to a manufacturing method of weather-resistant, waterproof and high-quality special paper for printing. The manufacturing method comprises the following steps of preparation of initial paper pulp, preparation of a toughening additive, preparation of papercopying pulp, preparation of paper blanks, preparation of an adhesive film solution, and applying of the adhesive film layer. The prepared paper has the advantages that the strength is high, and the printing effect is excellent; the water-resistant, oil-resistant, chemical-resistant and aging-resistant properties are realized; the heat insulation property is good; the certain flame-retardant effect is realized; the paper is flat in surface,is difficult to warp, and is suitable for drum printing; by adopting a large amount of waste paper pulp fiber, the resource is saved, the weight of the paper is light, and the certain fluorescent property is realized; when the paper is used as the advertisement paper, the vision effect is improved; the good bacteria-inhibiting and insect-preventing effects are realized; the added components are free from poison and harm, the safe and environment-friendly effects are realized, and the higher practical value and good application prospect are realized.

The invention discloses mica type fireproof wear-resisting air-guiding wallpaper comprising a base layer and a pattern layer. The pattern layer is arranged on the base layer. The mica type fireproof wear-resisting air-guiding wallpaper is characterized in that an air guiding layer is arranged below the pattern layer and is formed by arrangement of a plurality of rows of air guide holes; a fireproof light-transmitting film is arranged on the pattern layer, a wear-resisting layer is arranged on the fireproof light-transmitting film, an adhesive sticker layer is arranged below the base layer, and a release paper layer is arranged below the adhesive sticker layer; the base layer is made of mica sheet materials, and the wear-resisting layer is made of polyethylene materials; the thickness of the fireproof light-transmitting layer is 0.4mm, the radius of each air guide hole is 0.03mm, and the thickness of the base layer is 0.1mm. The mica type fireproof wear-resisting air-guiding wallpaper has the advantages that electrical insulating property is high, electrical conductivity is low, and safety coefficient is high; fire prevention effect is good, and property losses are reduced; light-transmitting effect is achieved, bubbles are easy to discharge, and service life is long; wear of the pattern layer of the wallpaper can be prevented.

The present invention aims to stabilize sound-electricity conversion characteristics of a diaphragm-type sound-electricity conversion device as well as to decrease the noise level of an ultrasonic diagnostic apparatus using the sound-electricity conversion device. The sound-electricity conversion device is configured by a capacitor cell including a lower electrode formed on a silicon substrate and an upper electrode over the lower electrode, the lower and upper electrodes sandwiching a cavity. An electrode short-circuit prevention film is formed on the upper electrode on the cavity side. The electrode short-circuit prevention film is formed of a material with an electrical time constant shorter than 1 second and longer than 10 microseconds, such as silicon nitride containing a stoichiometrically excessive amount of silicon. As a result, the electrode short-circuit prevention film has small electric conductivity, and thus it is made possible to prevent the film from being charged with electric charge and to avoid the drift of the electric charge. Consequently, the sound-electricity conversion characteristics of the sound-electricity conversion device stabilize, and further the sound noise level of the ultrasonic diagnostic apparatus decreases.

The invention relates to the field of preparation of printed product consumables and particularly relates to a preparation method of environment-friendly high-quality advertising consumable paper. Thepreparation method comprises the following relevant steps: preparing preliminary paper pulp, preparing an enhancing aid, preparing papermaking pulp, preparing a paper base, preparing a glue film solution, and applying a glue film layer. The prepared advertising consumable paper is high in strength, excellent in printing effect and good in water tolerance, oil resistance, chemical resistance, ageing resistance and adiabaticity, has a certain flame-retardant effect, and the surface of the paper is flat, is unlikely to be warped and is applicable to roller printing; by utilizing a large amount of waste paper pulp fibers, the resource is saved; and the paper is light, has a certain fluorescence property, is capable of improving the vision effect when being used as advertising paper and has good antibacterial and insect-prevention effects, and each added component is toxic-free and harmless, so that the advertising consumable paper is safe and environment-friendly and has relatively high practical value and good application prospects.

The invention provides a transparent conductive thin film and a placode and a touch screen and a making method thereof and a display device and belongs to the technical field of display. The transparent conductive thin film comprises a stack-set transparent inorganic insulating layer, a metal layer and a transparent metal oxide conductive layer, wherein refractive index of the transparent inorganic insulating layer is less than 1.5. According to the technical scheme, reflectivity of the touch screen and resistance of a touch-sensitive electrode can be reduced, electricity effect can be increased, and visual effect of the display device can be improved.

The invention discloses a double signal amplified zearalenone impedance sensor based on nano-Co3O4 mimic enzyme catalysis action. Hyaluronic acid functionalized TiO2 mesocrystal serves as a sensing platform, a lot of first antibodies (Ab1) are captured by hyaluronic acid, zearalenone antigens and second antibodies (Ab2) marked by Co3O4 are sequentially identified on a sensing interface, electron transfer is impeded by generated immune complexes, and electrochemical impedance signals are amplified. Nano-Co3O4 serves as an inorganic metal oxide, has good properties of peroxide mimic enzyme and is better in stability and high in catalytic activity, a lot of organisms are generated through catalytic oxidation and deposit on the surface of testing electrodes, and detecting signals are further amplified. An impedance sensor with high sensitivity, good stability and low detection limit is built, and the zearalenone is ultra-sensitively detected.

The invention discloses mica group purification noise reducing abrasion-resisting wall paper which comprises a base layer and a pattern layer. The pattern layer is arranged on the base layer. The wall paper is characterized in that an adhesive face layer is arranged on the pattern layer, a sand grain layer is arranged on the adhesive face layer, an air purification layer is arranged on the sand grain layer, an abrasion-resisting layer is arranged on the air purification layer, a non-setting adhesive layer is arranged below the base layer, a release paper layer is arranged below the non-setting adhesive layer, the base layer is made of mica plate materials, the abrasion-resisting layer is made of polyethylene materials, the air purification layer is made of photocatalysts, the thickness of the air purification layer is 0.4 mm, the thickness of the base layer is 0.3 mm, the thickness of the adhesive face layer is 0.5 mm, and the thickness of the abrasion-resisting layer is 0.3 mm. The mica group purification noise reducing abrasion-resisting wall paper is good in electrical insulating property, weak in conductivity and high in safety coefficient, the functions of sound absorption and noise reducing are achieved, wall paper pattern layer abrasion can be avoided, indoor air can be purified, clearing efficiency is high, and effect time is long.

The invention discloses a water-based cleaning fluid special for a chandelier. The cleaning fluid comprises, by weight, 10-30 parts of ethanol, 40-80 parts of deionized water, 0.1-3 part of a nonionicsurfactant, 0.05-0.2 part of a bactericide, 0.1-2 parts of a silicane coupling agent, and 0.2-4 parts of dimethicone. A preparation method of the water-based cleaning fluid comprises: in a water bathwith the temperature at 40-50 DEG C, uniformly mixing ethanol with deionized water, adding the nonionic surfactant, the bactericide, the silicane coupling agent and dimethicone while performing stirring, and performing continuous stirring for 60-120 min to obtain the cleaning fluid. The cleaning fluid is incombustible, non-corrosive, safe, eco-friendly and bactericidal, is weak in electrical conductivity and great in dirt removal, can directly clean the chandelier, and is high in cleaning efficiency.

The invention relates to a conductive material based on gamma-C2S and a preparation method of the conductive material. The conductive material comprises the following raw materials by volume percentage: 60-65% of gamma-C2S, 30% of water and 5-10% of conductive phase. The conductive material taking gamma-C2S as a matrix takes a carbonization reaction as a cementing and hardening mechanism of the matrix; the matrix mainly comprises calcium carbonate and silica gel; the conductive phase is distributed uniformly in the matrix; and the conductive material has the advantages of rapid mechanical strength development, high matrix compaction rate, high conductivity, excellent durability and the like.

The invention discloses mica thermal-insulation, fire-suppression and wear-resistant wallpaper. The mica thermal-insulation, fire-suppression and wear-resistant wallpaper comprises a base layer and a pattern layer; and the pattern layer is arranged on the base layer. The mica thermal-insulation, fire-suppression and wear-resistant wallpaper is characterized by also comprising an adhesive surface layer, a flock layer, a fireproof film and a wear-resistant layer; the adhesive surface layer is arranged on the pattern layer; the flock layer is arranged on the adhesive surface layer and is provided with the fireproof film; the fireproof film is provided with the wear-resistant layer; the wear-resistant layer is made of a polyethylene material; the base layer is made of a mica plate material; and the thickness of the wear-resistant layer is 0.23mm. The mica thermal-insulation, fire-suppression and wear-resistant wallpaper is good in thermal-insulation effect, has a soft surface and comfortable flock, is fireproof, has good wear resistance, and is prevented from being worn and damaged.

The invention provides an infrared light emitting diode epitaxial wafer and a preparation method thereof, which belong to the field of light emitting diode manufacturing. When the infrared light emitting diode epitaxial wafer is prepared, the substrate for growing the epitaxial layer is a semi-insulating gallium arsenide substrate, so that the substrate can be prevented from conducting electricity. The first intrinsic GaAs layer, the p-type GaAs layer and the second intrinsic GaAs layer are sequentially grown on the semi-insulating gallium arsenide substrate, and the overall conductivity is weak. And the p-type GaAs layer between the first intrinsic GaAs layer and the second intrinsic GaAs layer can play a role in consuming electrons and playing a role in blocking current, so that the situation that leakage current directly flows to the semi-insulating gallium arsenide substrate is reduced. What is ensured is that current stably flows in the epitaxial layer of the infrared light emitting diode epitaxial layer, and stable use of the finally obtained light emitting diode epitaxial wafer is ensured.

The invention discloses mica-type purifying denoising wallpaper, comprising a base layer and a pattern layer which is disposed on the base layer. The mica-type purifying denoising wallpaper is characterized by further comprising a vinyl-faced layer, a sand layer, an air purification layer, an adhesive sticker layer and a release paper layer; the vinyl-faced layer is disposed on the pattern layer, the sand layer is disposed on the vinyl-faced layer, a waterproof layer is disposed on the sand layer, the adhesive sticker layer is disposed below the base layer, the release paper layer is disposed below the adhesive sticker layer, the base layer is made of mica sheets, the air purification layer is made of photocatalyst, the air purification layer is 0.6mm thick, and the base layer is 0.3mm thick. The mica-type purifying denoising wallpaper has good electrical insulation, weak electrical conductivity and high safety coefficient, has a function of denoising by absorption, enables dwellers to feel comfortable, is capable of purifying indoor air with high efficiency and has long effect time.

The invention discloses a mica wear-resistant and fireproof wallpaper comprising a base layer and a pattern layer and the pattern layer is disposed on the base layer. The mica wear-resistant and fireproof wallpaper is characterized by further comprising a fireproof transparent layer, a wear-resistant layer, a non-setting adhesive layer and a release paper layer. The fireproof transparent layer is disposed on the pattern layer, the wear-resistant layer is disposed on the fireproof transparent layer, the non-setting adhesive layer is disposed under the base layer, and the release paper layer is disposed under the non-setting adhesive layer. The base layer is made from mica sheet material, and the thickness of the base layer is 0.3 mm. The thickness of the fireproof transparent layer is 0.4 mm. The invention provides the mica wear-resistant and fireproof wallpaper which is good in electrical insulating property, week in conductivity, high in safety coefficient, good in fireproof effect, and transparent, can reduce property loss and prevent the pattern layer of the wallpaper from being worn.

The invention discloses mica-type purification waterproof wallpaper. The mica-type purification waterproof wallpaper comprises a base layer and a pattern layer, wherein the pattern layer is arranged on the base layer; an air-purification layer, a waterproof layer, an adhesive layer and a release paper layer are also arranged on the base layer; the air-purification layer is arranged on the pattern layer, the waterproof layer is arranged on the air-purification layer, the adhesive layer is arranged below the base layer, and the release paper layer is arranged below the adhesive layer; the base layer is made from mica sheet materials, the air-purification layer adopts photocatalyst, the thickness of the waterproof layer is 0.3 mm, and the thickness of the base layer is 0.4 mm. The mica-type purification waterproof wallpaper provided by the invention has the advantages that the electrical insulating property is good, the electroconductivity is low, the safety factor is high, the wallpaper can resist water, does not spot or mildew and is sterilized; indoor air can be purified, the clearing efficiency is high, and the effect time is long.