9results about How to "Won't release" patented technology

The invention discloses a low-smoke flame-retardant cable outer layer material, and a preparation method of key components and a high-entropy alloy nano material comprises the following steps: grinding cerous nitrate, ferric nitrate, manganous nitrate, sodium hexahydroxyplatinate and copper nitrate into particles according to a ratio of 2: 1: 1: 1: 1; then adding 10-20 times by mass of a 32% tannic acid solution and 5-8 times by mass of a 10% glutaraldehyde solution, carrying out an oil bath at 65-70 DEG C for a reaction for 4-8 h, then carrying out overnight vacuum freeze drying to obtain mixed powder, placing the mixed powder in a crucible of a muffle furnace, then calcining the mixed powder at 1000-1200 DEG C under the protection of nitrogen flow for 4-10 h, and finally cooling the calcined mixed powder to room temperature. And cooling. The prepared outer layer material for the cable overcomes the defects that a conventional cable easily releases a large amount of toxic smoke during combustion, is poor in flame retardant property and contains halogen to pollute the environment.

The invention provides a preparation method of a catalyst for synthesizing indole, which comprises the following steps: sequentially impregnating silicon dioxide in a manganese salt solution, a first alkali solution, a silver nitrate solution containing an auxiliary agent M and a second alkali solution by adopting an impregnation method, standing for 0-72 hours at the temperature of 0-50 DEG C during each impregnation, and drying for 0-72 hours at the drying temperature of 20-290 DEG C after each standing, the auxiliary agent M is any one or more of aluminum nitrate, zirconium nitrate, lanthanum nitrate and cerium nitrate. Manganese dioxide is used as an anchor point, so that silver oxide is effectively dispersed and anchored on the surface of a silicon dioxide carrier modified with manganese dioxide; and finally, a nitrate auxiliary agent with the atomic radius larger than that of silver atoms is added and used for inhibiting the rate of increasing the particle size of the silver particles due to agglomeration of the silver particles caused by high-temperature sintering. The preparation process does not involve treatment at 300 DEG C or above and roasting treatment, and the preparation method is simple in step.

The utility model discloses a heat insulation and heat preservation gel structure which comprises a base plate assembly, the top of the base plate assembly is fixedly connected with a medium layer, the top of the medium layer is fixedly connected with a colloid layer, a heat insulation layer is arranged on the right side of the base plate assembly in a penetrating mode, and the front face and the back face of the base plate assembly are fixedly connected with heat preservation layers. A mineral wool layer is arranged in the heat insulation layer and used in cooperation with the heat insulation layer, a polystyrene board layer is fixedly connected to the bottom of the mineral wool layer and used in cooperation with the mineral wool layer, and a polyurethane foaming material layer is fixedly connected to the bottom of the polystyrene board layer. The polyurethane foaming material layer is used in cooperation with the polystyrene board layer. According to the gel structure, the phenomenon that the traditional heat insulation and heat preservation effect is poor is changed, various heat insulation and heat preservation materials are adopted for heat insulation and heat preservation treatment, the phenomenon of heat loss cannot occur in the using process, and the phenomenon that the using quality of gel cannot be guaranteed is avoided.

The application provides a flame-retardant composite PVC alloy material and a preparation method thereof, and belongs to the technical field of flame-retardant materials.The flame-retardant composite PVC alloy material contains PVC, AS and ZnCl2 in components;in a combustion process, ZnCl2 can interact with the structure generated by the dehydrochlorination of PVC, the nitrile group of the acrylonitrile unit in AS and the aromatic structure of the styrene unit, promotes crosslinking of chain segments, cyclization of the nitrile group and aromatization reaction, and makes more combustible cracking products be converted into condensed phase residual carbon.At the same time, the existing technical prejudice that AS is flammable and flame retardant of PVC can only add flame retardant is overcome.Through the ingenious cooperation of the functions of the three components of PVC, AS and ZnCl2, the effect of jointly improving the flame-retardant property of the material is achieved.The flame-retardant composite PVC alloy material has good compatibility of components, uniform and excellent flame-retardant effect, no migration segregation, and no toxic gas generated in the combustion process.

The utility model provides a closestool which comprises a base and an intelligent closestool cover. The base is provided with an upward first opening. The intelligent toilet lid comprises a shell and a water spraying mechanism arranged on the shell. The shell is connected with the base and arranged at the first opening. The base and / or the shell are / is made of aluminum, and the base and / or the shell are / is manufactured through sheet metal machining or casting machining or stamping machining. The intelligent toilet lid is arranged at the first opening, and the water spraying mechanism is used for flushing a user. The base is made of an aluminum material, has the characteristics of lightness, durability, firmness, corrosion resistance and the like, and can bear certain weight and pressure. By adopting the aluminum base, the problems that a ceramic closestool needs to consume mineral resources and a large amount of energy and cannot be recycled in the manufacturing link can be solved, the resource utilization rate is increased, and the energy is saved.

The utility model provides a medium-voltage fire-resistant cable, which relates to the technical field of cables and comprises a cable main body, three conductors are arranged in the cable main body, a shielding layer is arranged on the outer side of the three conductors, a flame-retardant layer is arranged on the outer side of the shielding layer, a heat-insulating layer is fixed on the outer wall of the flame-retardant layer, and an oxygen-isolating layer is fixed on the outer wall of the heat-insulating layer. Through the arrangement of the flame-retardant layer, the flame-retardant layer is made of LSZH, and the LSZH is a low-smoke halogen-free flame-retardant material, has low-smoke deformation performance and does not release toxic gas. According to the LSZH cable, smoke and harmful gas can be reduced when a fire occurs, the heat insulation layer is arranged, the heat insulation layer is made of crosslinked polyethylene, the crosslinked polyethylene has good heat resistance and electrical performance and also has good flame retardant performance, oxygen can be isolated through the oxygen isolation layer, and the flame retardant performance of the cable is improved. Therefore, a relatively large fire behavior is prevented from being generated in the first time when the cable main body is short-circuited, and buffer time for people to scatter is reserved.

The invention discloses a high-strength water-resistant formaldehyde-free impregnated paper adhesive and a preparation method thereof, and relates to the technical field of formaldehyde-free impregnated paper, the high-strength water-resistant formaldehyde-free impregnated paper adhesive comprises the following raw materials by mass: 40-100 parts of an auxiliary additive; by arranging the auxiliary additive, the waterproof agent, the epoxy resin, the natural rubber raw material, the polyvinyl alcohol, the aromatic and the pigment, the adhesive disclosed by the invention is greatly advanced in the aspects of viscosity, solid content, high-temperature-resistant effect, water-resistant effect and drying speed compared with an existing adhesive, and does not contain formaldehyde or derivatives thereof; the environment-friendly impregnated paper adhesive has the advantages that the environment-friendly requirement is met, harmful gas is not released in the use process, the harm of formaldehyde in the traditional impregnated paper adhesive is effectively avoided, the use requirement is met, each link is conveniently monitored and managed in real time by improving the preparation process, the problem point can be found in the first time when the preparation is abnormal, and the production efficiency is improved. And performing corresponding processing.

This utility model discloses a biomimetic noise reduction panel, comprising a sound-absorbing layer with a porous micro-nano structure disposed in the middle, and damping layers disposed on both sides of the sound-absorbing layer. Both damping layers are disposed on a mesh-like support plate. The edges of the support plate are encapsulated by four connecting blocks to form a square plate. The opposing connecting blocks on both sides form a set of connecting units. Two connecting blocks in a connecting unit are spliced ​​together by plug-in components to expand the size of the biomimetic noise reduction panel. The plug-in components are detachable. The sound-absorbing layer contains a porous micro-nano structure, structurally mimicking the scales of a lepidopteran insect wing. In terms of noise reduction performance, this noise reduction panel can stably cover a wide frequency range of 20Hz to 5kHz, with a noise reduction rate between 20.1% and 39.8%. Compared with the average noise reduction rate of 14.6% of traditional materials, its performance is improved by more than 50%, especially achieving a breakthrough in overcoming the industry challenge of low-frequency noise blocking.

The invention discloses a preparation method of copper-titanium alloy chopsticks, and relates to the technical field of non-ferrous metal alloys. Comprising the following steps: uniformly mixing raw materials to obtain mixed powder; the mixed powder is pressed into a consumable electrode bar, and a bar material is obtained; the bar is subjected to vacuum sintering at the temperature of 500-900 DEG C and then subjected to vacuum consumable electric arc melting, the melting current ranges from 1.5 KA to 3.0 KA, the melting voltage ranges from 18 V to 25 V, and a cast ingot is obtained; the cast ingot is forged, the final forging temperature is controlled to be not lower than 700 DEG C, and a round bar is obtained; the round bar is subjected to hot rolling treatment at the temperature of 830-900 DEG C, and a hot-rolled round bar is obtained; and carrying out solution treatment and aging treatment on the hot-rolled round rod, and then carrying out post-processing to obtain the finished copper-titanium alloy chopsticks. The copper-titanium alloy chopsticks have good mechanical properties, can reduce damage caused by collision in the use process of the chopsticks, and have obvious sterilization and bacteriostasis effects at the same time, so that the safe use performance of the chopsticks is improved.