235results about How to "Good insulation" patented technology

The invention relates to the technical field of copper-clad plates, in particular to a resin composition, a resin-coated copper foil produced by the same and a copper-clad plate produced by the resin-coated copper foil. The resin composition comprises the following components in percentage by weight: 45 to 80 percent of epoxy resin mixture, 15 to 50 percent of stuffing, 1 to 8 percent of curing agent, 0.01 to 2 percent of curing accelerator, and a proper amount of solvent. The resin composition is used to prepare the resin-coated copper foil, and then the resin-coated copper foil is used to produce the copper-clad plate so as to change the prior manufacturing method of copper-clad plates with high comparative tracking index and solve the technical problems of dry flowers, cloth mark exposure and inadequate thickness accuracy of the copper-clad plate and the like; the resin-coated copper foil also has the characteristics of long storage period, easy management and convenient use; and the resin-coated copper foil has a thin insulating dielectric layer, and is convenient to produce thin copper-clad plates with high comparative tracking index characteristic and multi-layer printed circuit boards.

The invention relates to the field of an infrared detector, in particular to a micromachined thermopile infrared detector. The manufacturing technique is simplified and the performance and finished product rate are improved. The manufacture of the micromachined thermopile infrared detector comprises the following steps of: (1) depositing silicon nitride film on the both sides of a silicon substrate by an LPCVD method; (2) etching to remove peripheral silicon nitride film on the frontal side of the silicon substrate by lithography; (3) manufacturing a plurality of Poly-Si strips both ends of which are respectively arranged on the silicon nitride film and the silicon substrate by LPCVD method and photolithographic process; (4) manufacturing a plurality of aluminum strips which form a thermocouple with the plurality of Poly-Si strips by sputtering and photolithographic processes; (5) depositing the silicon nitride film on the frontal side of the silicon substrate by PECVD method; (6) manufacturing an infrared absorption layer (a carbonized photoresist layer) covering the hot junction area of the thermopile with photolithographic process; (7) manufacturing a metal reflective layer (a metal layer) covering the cold junction area of the thermopile with lift-off process; and (8) eroding the back side of the silicon substrate to form a square frustum pyramid shaped groove. The micromachined thermopile infrared detector has reasonable structure design, simple manufacturing process, high detector performance, high finished product rate, good development prospect and is easy to realize.

The brazing flux of the present invention contains epoxy resin and organic carboxylic acid, and is characterized in that, for the combination of epoxy resin and organic carboxylic acid, for 1.0 equivalent of epoxy group, 0.8-2.0 equivalent of carboxyl group is combined, relative to the total amount of flux, The total content of the epoxy resin and the organic carboxylic acid is 70% by mass or more. The lead-free solder composition of the present invention contains lead-free solder and solder flux. When using the soldering flux of the present invention or the lead-free solder composition of the present invention, soldering is performed with a lead-free solder having a melting point higher than that of lead-based solder (for example, a melting point of 190 to 240° C.), the activity of the flux is maintained, and the solder The wettability is very good, and it does not hinder the hardening of the sealing resin even if the flux residue is not cleaned.

A preparation method and application of a chemical-bonded thermally-conductive insulation composite filling material belongs to the technical field of a thermally-conductive insulation composite filling material. The objective of the invention is to combine preferable thermal conductivity of carbon materials and insulation of thermally-conductive inorganic nanometer particles, wherein the thermally-conductive inorganic nanometer particles are loaded on the surface of carbon materials through a chemical bonding method. The composite filling material is good in thermal conductivity, and the inorganic nanometer particles block the electric conductivity of the carbon materials. The inorganic nanometer particles improve the surface roughness of carbon materials and improve the interface bonding of the carbon materials and the polymer resin matrix. The filling material is mixed with a polymer resin to prepare a composite excellent in thermal conductivity and insulation in a low filling material loading amount. The composite filling material can be applied to the field requiring thermal conductivity and insulation, such as electronic packaging materials.

The invention discloses a coating formula of oriented silicon steel barrier coat; the coating formula comprises the following components in parts by weight: 10-15 parts of light-weight magnesium oxide, 0-3 parts of nano magnesium oxide, 0.5-1.5 parts of titanium dioxide, 0.1-1.0 part of boride, 0-0.5 parts of antimonide and 79-89 parts of de-ionized water. The coat prepared according to the formula can enable the surface of an oriented silicon steel to form excellent magnesium silicate film substrate layer, and thus the surface quality, the magnetism and the activity of the silicon steel are improved; the formula not only can be used for normal oriented silicon steel but also can be used for high magnetic strength oriented silicon steel.

A cable end connector includes an insulative housing (10), a terminal (40) received in the housing, a metal shell (50) enclosing the housing, and an independent thin layer insulator (1). The independent thin layer insulator is located between the housing and the metal shell for insulating the terminal from the metal shell, whereby the cable end connector achieves a good insulation function between the terminal and the metal shell.

The electromagnetic pot capable of sending magnetic signal of temperature includes one pot body and at least one temperature sensing magnetic steel block serving as the temperature signal generating element, especially specific temperature signal sending element, fixed to the bottom of the pot body. The temperature sensing magnetic steel block may serve as heating and temperature maintaining element and can send one ferromagnetism losing signal to the electromagnetic oven while it reaches the Curie temperature. The present invention makes it possible for the electromagnetic oven with one magnetic inducing element to convert temperature control program, so as to make the electromagnetic oven automatic and to expand the use of electromagnetic oven and electromagnetic pot.

The invention discloses halogen-free and flame-retardant hard polyurethane foam plastic and a preparation method thereof, relating to foam plastic. Raw materials include polyether polyol 4110, polymethylene polyphenyl isocyanate, a tertiary amine catalyst, dibutyltin dilaurate, a silicon-carbon bond foam stabilizer, 2,4,6-tri(dimethylaminomethyl)phenol, a foaming agent, octa-(3-hydroxyl-3-methyl butyl dimethylsiloxy)silsesquioxane, dimethyl methylphosphonate and micron-sized alpha-alumina trihydrate. The method comprises the following steps of: mixing the polyether polyol 4110, tertiary aminecatalyst, dibutyltin dilaurate, silicon-carbon bond foam stabilizer, 2,4,6-tri(dimethylaminomethyl)phenol, foaming agent, octa-(3-hydroxyl-3-methyl butyl dimethylsiloxy)silsesquioxane and micron-sized alpha-alumina trihydrate to obtain A; adding the dimethyl methylphosphonate into A to obtain B; and adding the polymethylene polyphenyl isocyanate into B, pouring into a mold for foaming, curing anddemolding to obtain the halogen-free and flame-retardant hard polyurethane foam plastic.

The invention discloses skin-core structure aerogel composite fibers as well as a preparation method and application thereof. The preparation method comprises the following steps: treating aerogel particles and a polymer material through a skin-core compound spinning method, and carrying out synchronous compounding on the aerogel particles and the polymer material with a molten state at the tail end of a spinneret orifice through a guide pipe structure or a slit structure; synchronously carrying out wire drawing and cooling to form the skin-core structure aerogel composite fibers, wherein theskin-core structure aerogel composite fibers comprises a core containing the aerogel particles and a skin layer covering the core and the skin layer comprises the polymer material. The preparation method disclosed by the invention has the advantages of simple production technology, uniform aerogel-polymer compounding, complete preservation of an aerogel structure, advanced production equipment andthe like; the obtained skin-core structure aerogel composite fibers have the characteristics of excellent heat insulation performance, heat preservation effect, sound isolation performance, adsorption and filtering performance, thermal stability, no dust, economical efficiency and environmental protection and the like, and have a great application potential in the fields of clothing, home textiles, industrial heat preservation, adsorption and filtering and the like.

An infinitely variable diameter beverage sleeve includes a first surface configured to contact the container and extend around a circumference of the container, and a second surface configured to extend around the circumference of the container and face away from the container, and a securing device to hold the sleeve to the outside surface of the container. A first portion of the securing device is provided on one end of the sleeve on the first surface, and a second engaging portion of the securing means is provided as the second surface of the sleeve. The top edge of the sleeve is non-planar and the bottom edge of the sleeve is formed of a plurality of segments with at least two segments having a different radius of curvature.

Each feed-through pin of a multiple-phase, high voltage plug-pin connector comprises at least one conductor having a first insulation layer extending along at least part of its length, the insulation layer having an enlarged, load-bearing portion of non-circular cross-section having oppositely directed projections, configured for engagement in a correspondingly shaped bore portion of the connector shell. The load-bearing portions may be of a rhomboidal cross sectional shape with rounded corners, with a first diagonal length shorter than a second diagonal length. The pins are spaced around the central longitudinal axis of the shell with the shorter diagonal of each load-bearing portion extending radially and the oppositely directed projections extending into the radial spaces in the shell between adjacent pins. This arrangement allows space within a limited diameter feed through hole for the enlarged, load-bearing shoulder portions of the insulation layer.

The invention discloses a polyimide ultra-short fiber and a preparation method thereof and relates to the field of fiber preparation. According to the preparation method disclosed by the invention, batch preparation of polyimide fiber products with a fiber diameter nanoscale and a length micro scale can be realized. For the polyimide ultra-short fiber disclosed by the invention, the length of thefiber is 2 to 500mu m, the diameter of the fiber is 0.1 to 50mu m, and specific area is 2 to 30m<2> / g. By utilizing the physical and chemical properties at different heat treatment temperatures in thepreparation process of the polyimide fiber, dispersion and ultrashort properties of the fiber are realized more easily by adopting physical and mechanical methods in a state that the polyimide fiberis incompletely imidized; then complete imidization of the polyimide fiber is realized by high-temperature treatment; finally, the polyimide ultra-short fiber is obtained by a method of mechanical pulverization, lapping and shifting. The polyimide ultra-short fiber obtained by the preparation method disclosed by the invention has the characteristics of high and low temperature resistance, ultraviolet irradiation resistance, good insulating property and the like, and can be used for preparing a slurry coating solution, reinforcing resin, rubber and the like, forming pulp and the like.

The invention provides a brushless DC motor, comprising a stator, a rotor, a circuit board and a shell cover; wherein the stator comprises a stator iron core, a plurality of stator windings and insulators; the rotor is arranged in the stator; the circuit board is used for providing power drive and control for the brushless DC motor; the shell cover is used for containing the stator, the rotor and the circuit board; the stator also comprises an insulating member which is arranged in the shell cover and connected with the shell cover in a de-mountable mode, and the stator iron core and the insulators are arranged on the first side surface of the insulating member, and the circuit board is arranged on the second side surface of the insulating member. The inner components of the brushless DC motor are reliably connected with simple structure and good insulation and sealing functions.

The invention belongs to the technical field of preparation of lubricating agents for lubricating solid, and particularly relates to a quick-dry type dry film lubricating agent and a preparation method thereof. The quick-dry type dry film lubricating agent consists of the following raw materials in percentages by weight: 10-70% of a solid lubricating agent, 4-10% of a wear-resistant additive, 0.2-5% of a dispersing agent, 1-5% of an antioxidant, 0.5-2.5% of a solid additive, 10-50% of a tackifier and 5-20% of an anti-wear reagent at extreme pressure. The preparation method comprises the following steps: evenly mixing and stirring the various weighed components; carrying out ultrasonic oscillation on the components for 30-60 minutes in a stirring process; drying the components at the temperature of 80-100 DEG C until the weight percentage of water in the components is 20-30%; and grinding the dried components to obtain the lubricating agent. The film forming speed is high, the film forming time is about 15-30 seconds at normal temperature, and a film covers evenly.

The invention relates to a high-power radiating ceramic / metal composite module comprising an upper metal layer, a middle ceramic substrate layer and a large-area lower metal layer. The middle ceramic substrate layer is arranged below the upper metal layer, and the large-area lower metal layer is arranged below the middle ceramic substrate layer; the thickness of upper metal layer is less than 1 / 5 of that of the large-area lower metal layer; and the upper metal layer, the middle ceramic substrate layer and the large-area lower metal layer can be heated at high temperature to be strongly bonded.

The invention relates to an aluminum-chromium-zirconium refractory material for preparing wear-resistant prefabricated parts. The raw materials for its preparation include the following raw materials in weight percentages: 55-75% of fused corundum with a particle size of 0.044-8 mm, and partially stabilized zirconia with a particle size of 0.21-0.044 mm. 5-20%, 0.030-0.040mm chromium oxide 3-8%, Al2O3≥70% pure calcium aluminate cement 3-10%, ρ-alumina micropowder 1-8%. The refractory material has strong thermal shock resistance, enhanced slag resistance, enhanced wear resistance and impact resistance, which greatly reduces the large-area structural spalling of the refractory material due to temperature changes, and has a small thermal expansion coefficient and low thermal conductivity. , Extended service life.

The invention discloses a traction, rolling and unrolling device of a heat preservation quilt for a solar-panel greenhouse. The traction, rolling and unrolling device comprises the solar-panel greenhouse, an unrolling device, a rolling device and the heat preservation quilt, wherein the top of the solar-panel greenhouse is arched; the unrolling device and the rolling device are respectively arranged on the two lateral walls of the solar-panel greenhouse; one end of the heat preservation quilt is fixedly provided with an unrolling guide rod, and the other end of the heat preservation quilt is fixedly provided with a plurality of evenly-distributed rolling ropes; the unrolling guide rod is fixedly provided with a plurality of evenly-distributed unrolling ropes; the other ends of the unrolling ropes are fixed onto the unrolling device; the other ends of the rolling ropes are fixed onto the rolling device; a pair of guide plates in front-rear symmetry are arranged on the front and rear lateral walls in the length direction of the solar-panel greenhouse; the unrolling guide rod is slidably arranged on the guide plates. By the traction, rolling and unrolling device, the heat preservation quilt is flat and smooth when being unrolled at the top of the solar-panel greenhouse, and a better heat preservation effect is achieved; when the heat preservation quilt is rolled, the heat preservation quilt is stored at the lower end of the lateral wall of the solar-panel greenhouse, and sunlight incidence is unaffected.

The invention relates to the technical field of smart home, and particularly relates to a remote-controlled drinking water robot based on a smart terminal. The drinking water robot comprises a water dispenser, a cloud server, and a smart terminal. The water dispenser is connected with the cloud server. The cloud server is connected with the smart terminal. The smart terminal is equipped with an APP of the water dispenser. Users can remotely control the water dispenser by operating the APP. The drinking water robot can bring great convenience to people's life, has strong practicability, and is suitable for popularization in the field.

The invention discloses a sealing material of a medium temperature plate type solid-oxide fuel battery stack, which comprises the following components: Al2O3 powder, glass powder and an organic additive which is taken as a binder and a plasticizer, wherein the glass powder is composed of BaO with mass percentage of 20%-25%, B2O3 with mass percentage of 10%-15%, MgO with mass percentage of 20%-25%, ZnO with mass percentage of 10-15% and SiO2 with mass percentage of 30%-35%, its particle size is about 5-10mum; and the particle size of the Al2O3 powder is about 1-10mum. The invention also discloses a method for using the sealing material to seal the medium temperature plate type solid-oxide fuel battery stack. According to the invention, the tight accumulation of the sealing particles can be realized, the leakage rate of the sealing materials can be reduced, the mechanical properties of the materials can be increased, and the gas sealing can be effectively realized by the sealing mode which is convenient for operating and processing.

The invention relates to a flame-retardant smoke inhibitor for sprayed polyurethane foams as well as a preparation method and application of the flame-retardant smoke inhibitor, and belongs to the technical field of halogen-free flame retardant. By virtue of inorganic-organic synergistic flame retardant, cerium hydroxide / magnesium hydrate synergistic flame retardant, silicon / nitrogen / phosphorus synergistic flame retardant and intumescent flame retardant techniques and a surface modification technique, the flame-retardant smoke inhibitor is free of halogen and has the characteristics of small addition amount in a sprayed polyurethane foam foamed raw material, good dispersibility, small starting speed influence on the sprayed polyurethane foam foamed raw material and the like. The flame retardant grade of the sprayed polyurethane foam foamed raw material with the flame-retardant smoke inhibitor can be B1 grade, the sprayed polyurethane foam foamed raw material also has the characteristics of low combustion smoke density and environment-friendliness, and the mechanical property can meet the use requirements. The sprayed polyurethane foam foamed raw material with the flame-retardant smoke inhibitor is a relatively ideal fireproof heat-preservation material and has relatively good economic and social benefits.

The invention provides mixed modified nano particle transformer oil and a preparation method thereof. The mixed modified nano particle transformer oil is formed by mixing modified nano boron nitride transformer oil and modified nano silicon dioxide transformer oil. The volume ratio of the modified nano boron nitride transformer oil to the modified nano silicon dioxide transformer oil ranges from 1:5 to 1:1. The preparation method includes the three steps of preparation of the modified nano boron nitride transformer oil, preparation of the modified nano silicon dioxide transformer oil and mixing. The mixed modified nano particle transformer oil has good insulating and heat conductive performance and can meet the requirements for large-capacity, ultrahigh-voltage-grade and small power transformers, equipment which is used is simple and easy to operate, and large-scale production can be achieved.

PROBLEM TO BE SOLVED: To provide a small-sized high voltage circuit breaker with large capacity, of which rated current is increased in coping with recent requirement of a power system, which can have large capacity and capable of being used in high voltage.SOLUTION: First, a third switching part 3 is opened, and a current to be broken is made to flow through a serial connection part of a first switching part 1 and a second switching part 2. Next, the current is broken by separating electrodes of a vacuum breaking part constituting the first switching part 1 from each other with a prescribed distance, and it is made to withstand transient oscillatory voltage impressed between the electrodes. Afterwards, for example, after a maximum arc period after the distance between the electrodes of the first switching part 1 gets into a prescribed distance, the second switching part 2 is opened, and made to withstand the more severe impulse voltage.

The invention provides a plant cultivation device. The plant cultivation device comprises a base, wherein a plurality of planting pots are arranged on the base, each planting pot comprises a plurality of unit pots which are superposed sequentially from bottom to top, a pot cover is arranged at the top of the corresponding superposed unit pots in a covering manner, each unit pot is a cubical pot body with a tapering inclination angle, the specification of a top opening of each cubical pot body is greater than that of a pot bottom of each cubical pot body, each cubical pot body has a semitransparent circumferential wall, an annular supporting edge is arranged at the inner circumferential side of each semitransparent circumferential wall, a plurality of ventilation holes are formed in the upper part of each semitransparent circumferential wall, a plurality of drainage holes are formed in the lower part of each semitransparent circumferential wall, a plurality of supporting columns are arranged at the inner side of each semitransparent circumferential wall in an integrated manner, water diversion passages are formed in the supporting columns, a window is formed in one side wall of each semitransparent circumferential wall, and a window plate is hinged to each window; and a watering hole and a charging hole are further formed in each pot cover. According to the plant cultivation device, the floor area is saved, water and fertilizers are efficiently utilized, heat and moisture are preserved, and lighting is guaranteed.

An infinitely variable diameter beverage sleeve includes a first surface configured to contact the container and extend around a circumference of the container, and a second surface configured to extend around the circumference of the container and face away from the container, and a securing device to hold the sleeve to the outside surface of the container. A first portion of the securing device is provided on one end of the sleeve on the first surface, and a second engaging portion of the securing means is provided as the second surface of the sleeve. The top edge of the sleeve is non-planar and the bottom edge of the sleeve is formed of a plurality of segments with at least two segments having a different radius of curvature.

The present invention discloses a magnetic dielectric resin composition, which comprises, by weight, 30-100 parts by weight of a resin, 50-500 parts by weight of a magnetic filler, 0.1-7 parts by weight of an initiator, and 0.1-7 parts by weight of an accelerator, wherein the magnetic filler has resistivity of 100-1000 [omega].M. According to the present invention, the magnetic dielectric resin composition is used for the preparation of prepregs, laminates, copper clad laminates or circuit boards; and through the synergistic effect among different components in the magnetic dielectric resin composition, the prepared copper clad laminate has advantages of high magnetic permeability, good insulation property, low dielectric loss and high bending strength.

The invention discloses a glass insulator used for encapsulation connection between the metal end cover and the metal conductive columns of the wiring terminal of a compressor. The glass insulator comprises the components with the weight percentage as follows: 92-94 percent of SiO2, 3-4 percent of Al2O3, 0.5-1 percent of Bi2O3, 0.5-1 percent of TiO2 and 1.5-2.5 percent of SrO, preferably, 93 percent of SiO2, 33.3 percent of Al2O3, 0.7 percent of Bi2O3, 0.8 percent of TiO2 and 2.2 percent of SrO. The glass insulator not only has favorable insulating performance and avoids flashover generated during operation, but also has low probability of generation of crackle under the long-term action of the alternating current of the metal columns, therefore an explosion hazard of the compressor is avoided, and the glass insulator is suitable for widely applied in the wiring terminal of the compressor.

PCT No. PCT / JP96 / 03578 Sec. 371 Date Jun. 3, 1998 Sec. 102(e) Date Jun. 3, 1998 PCT Filed Dec. 6, 1996 PCT Pub. No. WO97 / 20673 PCT Pub. Date Jun. 12, 1997The present invention provides a method of manufacturing a small electronic component, by which its yield can be enhanced. The invention comprises the steps of: a component mounting step of mounting a necessary electronic component 2-4 on a substrate 1; a coating layer forming step of forming a coating layer 14 for covering and sealing the substrate 1 in its entirety including the electronic component 2-4 with a coating material having high heat resistance; and a package layer forming step of forming a package layer 17 for covering and sealing a circumference of the coating layer 14 with a thermoplastic resin material 12. In the package layer forming step, adverse effects by the heat from the thermoplastic resin 12 to the electronic components 2-4 and the substrate 1 are inhibited with the coating layer 14.

The invention discloses a waterproof heat-insulation exterior wall coating and a preparation method thereof. The waterproof heat-insulation exterior wall coating comprises the following components inparts by weight: 22-42 parts of a silicone-acrylic emulsion, 5-12 parts of alumina silicate fiber, 8-15 parts of hollow glass bead, 4-9 parts of pigments and fillers, 3-7 parts of expanded vermiculite, 1.3-2.8 parts of a dispersant, 0.6-1.4 parts of a levelling agent, 1.6-3.8 parts of a film-forming auxiliary agent, and 13-18 parts of deionized water. The waterproof heat-insulation exterior wall coating has excellent waterproof heat-insulation performance, the silicone-acrylic emulsion is used as a film-forming object, and fillers such as a nano SiO2 aerogel, hollow glass bead and expanded vermiculite are cooperated, and under cooperation of a plurality of auxiliary agents, the prepared coating has good heat insulation and water resisting performance.