74results about How to "To achieve the insulation effect" patented technology

The invention belongs to the technical field of heat conduction polymer based composite materials and preparation thereof, particularly relates to a polymer based composite material with a special isolation double-network structure and a preparation method thereof, and provides a heat conduction polymer based composite material. The heat conduction polymer based composite material is prepared from the following components: a thermoplastic polymer, a heat conduction filler A and a heat conduction filler B, wherein the heat conduction polymer based composite material has an isolation double-network structure; the isolation double-network structure is as follows: in the heat conduction polymer based composite material, the heat conduction filler A forms a heat conduction network (1) in the thermoplastic polymer; the heat conduction filler B is adhered to the surfaces of binary blended particles to form a heat conduction network (2) used for isolating the heat conduction network (1) between the binary blended particles; and the heat conduction network (1) and the heat conduction network (2) are connected with each other. The isolation double-network synergy structure built by the prepared composite material has higher synergy efficiency, so that the heat conduction performance of the material is greatly improved.

This invention refers to the thermoplastic copolyester, whose viscosity can be increased to between 0.85L/g and 1.05L/g after polymerization, and can be used in producing heat shrinking sleeve. The invention also refers to a way of making heat shrinking sleeve: the heat shrinking copolyester is changed into tubular shape after being melted and is made into copolyester heat shrinking sleeve after being huffed and stretched. And the lengthways shrinkage of the heat shrinking sleeve (MD) is no more than 15%, the transverse shrinkage (TD) is no less than 14%. This kind of heat shrinking sleeve can be used as the coats and insulating coats of all kind of conductors.

The invention relates to an electricity-insulation heat-conduction powder, an electricity-insulation heat-conduction material based on the electricity-insulation heat-conduction powder, a preparation method of the powder, and a preparation method of the material. The electricity-insulation heat-conduction powder comprises graphite intercalation compound particles, the microstructure of the graphite intercalation compound particles comprises a plurality of graphite crystal grains, and a nanometer heat-conduction electricity-insulation metal oxide distributed between carbon atom layers of single graphite intercalation compound particles, and the surface of the graphite intercalation compound particles is coated with a heat-conduction electricity-insulation metal oxide. The graphite intercalation compound particles in the electricity-insulation heat-conduction powder prepared through the preparation method of the powder have the characteristics of electricity insulation and heat conduction. The electricity-insulation heat-conduction powder has a high heat conductivity and an electricity insulation characteristic, and is very suitable for preparing heat conduction plastics, heat conduction rubber, heat conduction materials and the like.

A conductive slip ring assembly assembling method includes the steps that firstly, the surface of a small shaft neck is coated with insulating epoxy adhesive, then the small shaft neck is machined, and therefore a small shaft neck assembly is formed; secondly, conductive slip ring sheets and outgoing wires are welded, so that slip ring assemblies are formed; thirdly, multiple sets of insulation spacers and the slip assemblies are installed on the small shaft neck assembly alternately at intervals; fourthly, a large shaft neck is pressed on the small shaft neck assembly, so that a conductive slip ring assembly blank is formed; fifthly, epoxy potting adhesive is injected in the conductive slip ring assembly blank in a vacuum mode, so that a conductive slip ring assembly is formed. The small shaft neck is coated with the insulating epoxy adhesive containing two components, so that the insulating effect between a shaft and the slip ring sheets is achieved, the size is small, and the structure is compact.

The invention discloses a heat conduction and insulation composite material with an anisotropic structure and a preparation method of the heat conduction and insulation composite material. Silicone rubber is used as a matrix, and graphene is arrayed in the matrix to form a chain type structure, thus forming a heat conduction channel with anisotropism. According to the heat conduction and insulation composite material with the anisotropic structure and the preparation method of the heat conduction and insulation composite material, by full use of excellent properties such as extremely high heatconductivity and extremely high strength of the graphene, the graphene is doped into a polymer matrix, so that a new idea is provided for development of a polymer-based composite material with high heat conductivity, and the heat conductivity of a conventional polymer is improved.

The invention discloses a fabrication method of a compound mica tape. The method is characterized in that 2%-15% reinforced fiber is directly added in the conventional fabrication process of mica paper, and the reinforced fiber is directly doped with the mica paper, so that the fabricated mica tape can be used and is not required to be compounded with a reinforced layer. The method is easy and simple to operate and requires no compound procedure, an insulation effect of the traditional mica tape can be achieved by directly doping the reinforced fiber with the mica paper, the isotropy of electric insulating properties after once molding of the reinforced fiber and the mica paper is ensured, and the insulation thickness of the mica tape is reduced.

The invention discloses an insulation waterproof cement gum. The cement gum comprises the following components in weight percent: 60-70% of butyl rubber, 5-10% of reinforcing agent, 20-25% of packing, 0.5-5% of fire retardant, 0.2-2% of curing agent and 5-20% of waterproof agent. The insulation waterproof cement gum has the advantages of convenience in use and good insulation waterproofness.

The invention relates to a cylindrical battery, comprising an electric core, a lug and two insulating ring spacers which are contained in a battery shell body, a central boss which is protrusive to a winding shaft hole of the electric core is arranged in the center of each insulating ring spacer, a core rod is arranged in the winding shaft hole of the electric core, the central bosses of the two insulating ring spacers are respectively fastened and connected with the two ends of the core rod, and the electric core is clamped between the two insulating ring spacers. The two insulating ring spacers which are positioned between a positive electrode-negative electrode electric core and a polar are fastened and connected with the core rod by leaving the core rod for winding the electric core in the winding shaft hole, the core rod generates the pull force to the insulating ring spacers and clamps the two ends of the electric core by reasonably setting the length of the core rod and the connection size between the insulating ring spacer and the core rod, thereby fixing the position of a polar piece in the electric core. When in shock, as the two ends of the polar piece are clamped by the insulating ring spacers, the electric core is difficult to be scattered due to the shock, and the electric core can be further reliably fixed in a battery, thereby preventing the occurrence of safety accidents.

The invention provides an insulation process of a motor stator punching sheet for an electric vehicle, which comprises the steps of surface processing, protection, preheating and dip-coating curing of the motor stator punching sheet sequentially. The step of protection comprises the following sub steps that: a rotating shaft protection tool is connected at the position of a shaft hole of the motor stator punching sheet; and a hull cell protection tool is connected into a rebate of the hull cell. The hull cell protection tool comprises a protection block of a shape corresponding to that of the rebate of the hull cell and at least one pin. The step of dip-coating curing sequentially comprises the following steps of: firstly, placing the motor stator punching sheet in a fluidized bed; secondly, powdering; and finally, carrying out leveling processing. An insulating layer is formed on the surface layer of the motor stator punching sheet processed by the insulation process, the motor stator punching sheet can be direct subjected to subsequent processes such as wire insertion and the like and insulation paper and bamboo sticks in a stator punching sheet slot are reduced, and thus, the weight of a motor stator is reduced. The dip-coating of insulating powder is carried out in the fluidized bed, so the automation degree is improved, uniform dip-coating is ensured, the quality of the insulating layer is assured and the demand for batch production is met.

A method for preparing inductor includes winding a flat bare wire to be a coil and holding connection pin at two ends of coil, folding two connection pins towards the same direction at the same height, spraying an insulation layer on surface of two connection pins and coil, injecting a covering body in range of coil and two connection pins for positioning them, using a partial connection pin being exposed externally as connecting face to be connected with external circuit and setting said covering body in magnetic conduction base made by iron powder and in cover.

The invention discloses a manufacturing method of a cable having a waterproof outer sheath structure. On the basis of the novel process and structure, the waterproof cable comprises conductors coated with core wire insulating layers; the core wires are twisted to form a cable unit and the cable unit is coated with a waterproof outer sheath layer. A heat shrink tube sleeves a waterproof cutting opening of the waterproof outer sheath layer; and thermal drying process is carried out on the heat shrink tube to form a horn shape at the waterproof cutting opening, thereby carrying out glue pouring for sealing. According to the invention, glue pouring is carried out by using the horn-shaped opening and the sealing glue coated at the surface of the outer sheath opening of the cable can be protected effectively by using the heat shrink tube, thereby realizing the insulation effect. Meanwhile, the glue shedding can be prevented. The waterproof testing is carried out: the side core wire is blown by 3-KG air pressure without any water leakage. The process is simple; the manufacturing operation can be carried out easily; and the practical value is great.

The invention relates to a negative plate, a preparation method thereof and a diaphragm-free battery cell. The negative plate comprises a negative plate current collector, and negative material layers, insulating ceramic layers and gluing layers which are sequentially arranged on two sides of the negative plate current collector; the diaphragm-free battery cell comprises a positive plate and a negative plate which are sequentially stacked. The positive plate comprises a positive plate current collector and positive material layers arranged on two sides of the positive plate current collector. The insulating ceramic layers and the gluing layers are arranged on the two sides of the negative plate, so that a conventional diaphragm layer can be omitted, the space of a battery cell is reduced, and the volume energy density is improved; the positive and negative electrode insulation effect can be achieved, the transmission of lithium ions is not influenced, and the good adhesion of the positive and negative electrodes is ensured, so that the battery cell can be safely used.

The invention discloses an all-insulated and all-sealed alternating-current metal closed fixed switch cabinet which comprises a cabinet body. A first partition plate and a second partition plate are transversely arranged in the cabinet body from top to bottom in sequence, and the cabinet body is divided into a cooling bin, a switch bin and an electrical bin which are arranged up and down by the first partition plate and the second partition plate. A third partition plate is vertically arranged between the first partition plate and the second partition plate, the third partition plate divides the switch bin into a gas insulation cabinet and a solid insulation cabinet which are arranged left and right, a cooling assembly is included, a gas control assembly is arranged in the electrical bin, a controller is arranged on the cabinet door, and the cooling assembly comprises a gas cooling assembly and an in-cabinet cooling assembly. The air cooling assembly is arranged, air blown out by an air pump passes through a buffer box, then enters a transverse pipe through an air inlet pipe and is finally exhausted from the right end of the transverse pipe, hot air in the transverse pipe is blown out, the transverse pipe is cooled, the temperature of the air pipe making contact with the outer side of the transverse pipe is reduced, and therefore the effect of cooling air in the air pipe is achieved.

The invention discloses a novel structural cable and a manufacturing method thereof, comprising a conductor and an insulating layer, wherein the insulating layer is disposed around one side of the outer wall of the conductor, a sealing layer is fixedly disposed around the inner wall of the insulating layer, a filling layer is disposed between the sealing layer and the conductor, a heat-conductingcolumn is disposed on one side of the outer wall of the sealing layer, one end of the heat-conducting column is inserted through the insulating layer and extends to one side of the outer wall of the insulating layer, and the heat-conducting column is provided with a heat exchange hole. The invention avoids the direct contact of the sealing layer with the conductor, and avoids the aging phenomenonof the sealing layer under the electric field generated by the conductor for a long time by setting the filling layer and utilizing the stability of the inert gas, thereby shortening the service lifeof the cable and increasing the danger of the cable to the outside world, and avoids the peak voltage generated nearby to affect the voltage output of the cable, for example, lightning will convert the voltage flowing through the conductor into a peak voltage, by using the filled inert gas, thereby generating damages to equipment.

The invention provides a display device for displaying a first pattern, a manufacturing method of the display device and a gift box applying the display device. The display device comprises a substrate and a light emitting diode arranged on the substrate. The light emitting diode comprises a first electrode, a transparent insulating pattern layer, a light emitting layer and a second electrode. Thetransparent insulating pattern layer is arranged on the first electrode, the thickness of the transparent insulating pattern layer is smaller than or equal to 100 nanometers, and the transparent insulating pattern layer is provided with a second pattern which is complementary with the first pattern. The light-emitting layer covers the transparent insulating pattern layer and the first electrode,and the light-emitting layer is electrically connected with the first electrode. The second electrode is disposed on the light emitting layer. The display device can have a switchable pattern displaymode and a pattern-free mode.

The invention discloses an aluminium-magnesium alloy housing-closed bus duct, and the bud duct comprises a housing made of aluminium-magnesium alloy, and a plurality of copper strips disposed in the housing. The directions of the copper strips are consistent with the length direction of the housing, and the copper strips are parallel to each other and arranged at intervals. Moreover, an outer wall of each copper strip is provided with an epoxy resin insulating layer in a casting manner. The bus duct can achieve large-span connection, and does not need a dedicated grounding line.

The invention belongs to the high voltage line field technology field and especially relates to an electrician high-voltage line walking device. The device comprises a first supporting plate and a second supporting plate. A mica layer is fixedly installed at a top of the first supporting plate. By using the electrician high-voltage line walking device, a second walking device is arranged on an upper surface of the second supporting plate, and the second walking device includes a third function cabinet and a fourth function cabinet. A bottom of the third function cabinet is fixedly connected with the upper surface of the second supporting plate, and the bottom of the fourth function cabinet is fixedly connected with the upper surface of the second supporting plate so that an effect that thesecond walking device divides pressure for a first walking device when a professional is overweight in a using process of the device is achieved. A problem that when the professional uses the deviceto inspect a high-voltage line, the first walking device is only arranged so that if the first walking device is damaged, personal safety of the professional cannot be effectively protected is solved.

The invention discloses a heat conduction and radiation device. The heat conduction and radiation device comprises a graphite base, a heat conduction copper pipe and a film, wherein the graphite base is a sheet-like structure, the heat conduction copper pipe is a flat structure, one face of the graphite base is pasted with the film, the other face of the graphite base is pasted with one face and two side faces of the heat conduction copper pipe, and width of the graphite base is greater than width of the heat conduction copper pipe. The heat conduction copper pipe is designed to be the flat structure, so the use scope is wider; one face of the sheet-like graphite base is pasted with one face and two side faces of the heat conduction copper pipe, through combination of the two, heat conduction and radiation performance is not only improved, heat can be reduced to a lower level more rapidly, but also temperature difference of the two ends and the two sides can be effectively reduced, the temperature is more uniform, and damage to elements of products is prevented; as the width of the graphite base is greater than the width of the heat conduction copper pipe, the other face of the graphite base is pasted with the film, so the insulation effect is realized, and great convenience is realized for enterprises or users.

The invention relates to a light wave heating type air energy water heater. The light wave heating type air energy water heater comprises a water tank and an outer air energy machine. The water tank and the outer air energy machine are connected through a heat exchange pipe. The water tank comprises a shell, an inner container, a water inflow pipe, a water outflow pipe and a heat exchange coil pipe. The inner container is arranged in the shell. One end of the water inflow pipe extends into the inner container and is communicated with the inner container. One end of the water outflow pipe extends into the inner container and is communicated with the inner container. The heat exchange coil pipe is wound around the inner container and communicated with the heat exchange pipe. The air energy water heater further comprises a light wave heater. The light wave heater comprises an insulated vacuum pipe, an electric heating wire and a jacket. The electric heating wire is arranged in the vacuum pipe. The two ends of the electric heating wire are provided with leading-out terminals respectively. The two leading-out terminals extend out of the vacuum pipe. The vacuum pipe is fixed into the jacket in a sealed manner. The light wave heating type air energy water heater has the beneficial effects that water and electricity can be separated, the heating speed is increased, the temperature is accurately controlled, and water scale is reduced so as to improve the heat conducting efficiency.

The invention discloses a flame-retardant insulating polyester film and a production process thereof. The polyester film is prepared from following raw materials in parts by weight: 80-90 parts of polyester chips, 3.5-6.5 parts of a composite fire retardant, 0.5-2 parts of nano-TiO2 particles and 1-3 parts of a barium-zinc heat stabilizer, and the flame-retardant insulating polyester film is prepared by steps of raw material drying, melt-extruding, piece casting, biaxial stretching, heat setting, cooling and rolling up. In the production process, a composite flame retardant of ZnSnO3 is coatedwith Al(OH)3, so that a dense carbon layer can be effectively produced in a promoting manner during combustion of the materials, not only can prevent oxygen and heat from entering the interior of thefilm, but also prevent flammable gas from escaping to the outside of the film, and can achieve a good flame retardant effect; according to the production process, nano-TiO2 particles are added to theraw materials in the preparation process, and a plurality of interfaces can be generated between the nano-TiO2 particles and polyester and indirectly affect the carrier migration, and the addition ofthe nano-TiO2 particles can affect the concentration of carriers in a composite material medium, so that the charge accumulation in the material can be effectively improved and an insulation effect is achieved.

The method comprises: the contact terminal processed with mold forming is placed on the injection molding machine to make plastic injection so as to make the injected base-seat to cover the contact terminal; embedding the memory card chip (including flash memory, control chip and passive component) into said base-seat; making a plastic injection for the whole assembly to make the chip module entirely and closely covered.

The invention discloses an insulating winding device for a steel cable and a manufacturing process of a winding drum assembly. The insulating winding device for the steel cable comprises a driving shaft, a chamber, a spline pair flange, the steel cable, the winding drum assembly, a guide nut, an adjusting ring, a nut supporting barrel, a shaft end cover, a bearing, a plug, an elastic roller assembly, a bearing gland, screws and a shaft seal. The winding drum assembly comprises a winding drum body, an isolating ring, an isolating sleeve, a winding sleeve, a press plate, a flat head screw, a cylindrical head screw, a flat washer and a T-shaped sleeve. Insulating materials are reasonably used, ingenious structure combination is adopted, and equipment achieves an insulating effect while guaranteeing mechanical performance. The insulating winding device for the steel cable and the manufacturing process of the winding drum assembly can be applied to universal hoisting equipment, can also be applied to winding equipment with special requirements, and are particularly suitable for hoisting equipment required by precise experiments in laboratories, so that the situation that micro electricity generated due to magnetic induction and friction gathers at the tip end of a hook connected with the steel cable and affects the performance index of a hoisted object is prevented. The device is simple in structure and good in insulating performance.