370 results about "Melamine resin" patented technology

The invention relates to the technical field of fire prevention, in particular to a multi-core fire extinguishing microcapsule and a preparation method thereof. The multi-core fire extinguishing microcapsule provided by the invention comprises a microcapsule A, a shell material of the microcapsule A is melamine resin A, and a core material of the microcapsule A is a mixture of a microcapsule B and a fire extinguishing agent A; the shell material of the microcapsule B is melamine resin B, and the core material of the microcapsule B is a fire extinguishing agent B. The outer wall of the large-particle-size multi-core microcapsule is thin, a part of the fire extinguishing agent A is released at a relatively low temperature, the fire can be prevented from happening by timely cooling when the temperature rises and a fire risk occurs, and the inner small-particle-size microcapsule B can be broken and released at a relatively high temperature, so that the subsequent fire extinguishing performance failure caused by releasing a large amount of the fire extinguishing agent at one time at a certain temperature is avoided; and the fire extinguishing cycle use frequency is increased, and the requirements of more fire extinguishing scenes can be met.

To provide an aqueous coating composition capable of giving a coating film which has an excellent appearance and suppresses yellowing while securing water resistance.SOLUTION: The aqueous coating composition contains a hydroxyl group-containing acrylic resin emulsion (A), a core-shell type acrylic resin dispersion (B), and a hydrophobic melamine resin (C). The core-shell type acrylic resin dispersion (B) has a C4-24 branched hydrocarbon group in a core part and has a hydrophilic resin in a shell part. The solid content mass ratio (A:B) of the hydroxyl group-containing acrylic resin emulsion (A) to the core-shell type acrylic resin dispersion (B) is 30:70-90:10.SELECTED DRAWING: None

The invention relates to the technical field of photoetching, and provides a corrosion-resistant anti-reflection coating composition as well as a preparation method and application thereof. The corrosion-resistant anti-reflection coating composition comprises the following raw materials in parts by weight: 15-20 parts of acrylic resin, 2-4 parts of a catalyst, 6-8 parts of a cross-linking agent and 300-700 parts of a solvent, the cross-linking agent is mixed etherified melamine resin, the mixed etherified melamine resin is composed of first mixed etherified melamine resin and second mixed etherified melamine resin, etherifying agents of the first mixed etherified melamine resin are methyl alcohol and n-butyl alcohol, and etherifying agents of the second mixed etherified melamine resin are methyl alcohol and isobutyl alcohol. According to the technical scheme, the problem of poor corrosion resistance of the anti-reflection coating in the prior art is solved.

The invention discloses a double-shell-layer fire extinguishing microcapsule. The double-shell-layer fire extinguishing microcapsule comprises a core material, a first shell layer and a second shell layer, wherein the core material is coated with the first shell layer, and the first shell layer is coated with the second shell layer. By optimizing the components of the core material, reducing the volatility of the core material, improving the coating rate and arranging the double-layer microcapsule structure, the first shell layer can be formed under the low-temperature condition and is excellent in compactness, escape of the core material in the reaction can be effectively reduced, the coating rate and the yield of the microcapsule are further improved, and after full crosslinking, the product yield is improved. The second shell layer can further improve the mechanical performance of the microcapsule, the hydrophobicity and compactness of the second shell layer are beneficial for preventing polyurea and melamine resin from absorbing water and deliquescing and preventing formaldehyde harmful substances from being continuously released, the safety of the microcapsule is improved, and the microcapsule has a wider application scene and can quickly respond to the fire temperature.

The invention discloses a self-repairing high-energy-storage ice-snow-resistant double-layer composite microcapsule as well as a preparation method and application thereof, and aims to solve the technical problems that an existing microcapsule phase-change material is easy to leak, single in heat energy source and monotonous in realization function. The double-layer composite microcapsule is sequentially composed of an inner phase change microcapsule core, an inner phase change microcapsule shell, an outer self-repairing microcapsule core and an outer self-repairing microcapsule shell from inside to outside. Wherein the internal phase change microcapsule core is composed of n-caprylic acid and tetradecane; the external self-repairing microcapsule core is formed by mixing hydrophobic hexamethylene diisocyanate and a carbon nano tube; the inner phase-change microcapsule shell and the outer phase-change microcapsule shell are formed by mixing carbon nanotubes and double polymers, and the double polymers are prepared from polyvinyl alcohol and methylated hexamethylol melamine resin; the preparation method comprises the following steps: preparing an inner high-energy-storage phase-change microcapsule, adding the inner high-energy-storage phase-change microcapsule into an outer microcapsule core solution, and dropwise adding the outer microcapsule core solution into an outer microcapsule shell solution to form a double-layer composite microcapsule; the microcapsule is used for preparing a coating and can be applied to the fields of coating self-repairing and ice and snow resistance.

The invention discloses molybdenum disulfide nanosheet modified urea formaldehyde / melamine resin as well as preparation and application thereof. A preparation method of the molybdenum disulfide nanosheet modified urea formaldehyde / melamine resin comprises the following steps: (1) preparing molybdenum disulfide nanosheets from a sulfur source and a molybdenum source by adopting a hydrothermal synthesis method; (2) carrying out surface functional group modification on the molybdenum disulfide nanosheet by using a surface functional group modifier; (3) carrying out copolymerization reaction on aldehydes, a compound containing polyamido and the molybdenum disulfide nanosheet modified by the surface functional group in the step (2) to obtain molybdenum disulfide nanosheet urea formaldehyde / melamine resin; and (4) modifying the molybdenum disulfide nanosheet urea formaldehyde / melamine resin by using a silane coupling agent to obtain the molybdenum disulfide nanosheet modified urea formaldehyde / melamine resin. According to the method disclosed by the invention, the polymer is copolymerized and grafted onto the molybdenum disulfide nanosheet, so that the problems that urea formaldehyde / melamine resin is insufficient in temperature resistance and poor in pressure resistance after being solidified with a rock core are effectively solved.

This application relates to the technical field of conductive pastes, and specifically discloses a lithium battery conductive paste and a preparation method thereof. A lithium battery conductive paste includes the following components in parts by weight: 20 - 35 parts of graphite, 60 - 80 parts of carbon black, 1 - 2 parts of carbon nanotubes, 1 - 2 parts of graphene, 70 - 90 parts of binder, 4 - 7 parts of polyvinylpyrrolidone, 15 - 20 parts of modified melamine resin, and 650 - 800 parts of deionized water. When the lithium battery conductive paste prepared in this application is used in a lithium battery, the lithium battery has good rate performance and cycle performance.

The invention relates to the technical field of materials, and discloses a high-temperature-resistant cyano resin composite material and a preparation method thereof.The high-temperature-resistant cyano resin composite material is prepared by adding melamine resin, cyano-containing modified benzoxazine and glass fibers into a double-screw extruder, conducting melt blending, extruding master batches and then conducting injection molding through an injection molding machine. A quaternary ammonium salt group in cyano-containing modified benzoxazine has a better antibacterial effect, a triazine group in the cyano-containing modified benzoxazine has a better high-temperature-resistant effect, carboxyl in N-methyl imino diacetic acid and hydroxyl in 2, 4-anilino-6-(phenol ethyl ester amine) s-triazine are subjected to an esterification reaction, and triazinyl N-methyl imino diethyl ester is obtained. Meanwhile, the substitution degree of triazinyl is improved, so that the temperature resistance effect is better; the sulfur element contained in the flame-retardant plastic has a good flame-retardant effect; wherein benzoxazine can form a heat-resistant phenolic resin structure at a high temperature, so that the flame retardant has a relatively good flame retardant effect.

The application discloses melamine resin / nano-silica composite microspheres, a preparation method thereof, and a light diffuser and optical material, and relates to the technical field of organic-inorganic composite materials. The method uses branched nano-silica and large-particle-size spherical nano-silica as a balling aid, and utilizes melamine and formaldehyde to polymerize in an aqueous phase to prepare the composite microspheres, without using a dispersant or an alcohol organic solvent. The obtained microspheres have a rough surface morphology similar to a litchi shell, and exhibit excellent high-haze and high-transmittance performance when used as the light diffuser. The preparation method is simple, low in cost, suitable for industrial production, and can be widely used in the fields of LED lighting and liquid crystal display.

An applicator is provided for use with a cleaning pad having Melamine resin foam that converts energy from waves or vibrations into heat. The applicator includes a handheld base and an energy emitter. The handheld base is configured to receive the cleaning pad, and the energy emitter selectively provides waves or vibrations to the cleaning pad for heating the Melamine resin foam. A cleaning applicator system includes a cleaning medium and an applicator. The cleaning medium has a Melamine resin foam body that converts energy from waves or vibrations into heat. The applicator has a platform, a handle extending from the platform, an energy emitter, and a computing system in communication with the energy emitter. The cleaning medium is coupled to the applicator, and the energy emitter provides waves or vibrations to the Melamine resin foam body to heat the Melamine resin foam body.

The invention relates to the technical field of powder conveying, in particular to melamine resin powder quantitative conveying and excess material automatic recycling integrated equipment which comprises a support and a discharging tank. The transmission assembly comprises a discharging barrel, a material moving column and a pushing head; the stroke adjusting assembly comprises a first adjusting rod; the excess material recycling assembly comprises a rack and a sliding rod, quantitative discharging and excess material recycling are integrated, the operation steps are optimized, meanwhile, the efficiency is improved, meanwhile, charging, discharging and excess material recycling are automatically achieved in the rotating process of the material moving column, the circulating integrated production process is achieved, and the production efficiency is improved. When the excess material recycling assembly vibrates, excess materials on the lower portion are shaken off and collected, meanwhile, falling distributed materials on the upper portion are vibrated, gaps are eliminated, accurate discharging is guaranteed, when the discharging amount is set, balance weights are adjusted in a self-adaptive mode, finally, the amplitude and the vibration effect are improved in a self-adaptive mode, integrated adjustment of the discharging amount range and the amplitude is achieved, and the discharging efficiency is improved. The occupied space is saved; and meanwhile, the production efficiency is improved.

The invention belongs to the technical field of flame retardants, and particularly relates to a melamine hydrobromide flame retardant and a preparation method thereof. The flame retardant disclosed by the invention has a core-shell structure, the core is hydroxylated melamine hydrobromide subjected to surface modification by a silane coupling agent, and the shell is melamine resin synergistically enhanced by ammonium polyphosphate and oxidized cellulose nanofibrils; through silanization treatment, core-shell interface combination is enhanced, and space-time synergy of gas phase and condensed phase flame retardance is achieved through a composite shell; the obtained flame retardant is high in thermal stability in a polymer matrix, the limit oxygen index of a composite material can be remarkably increased after the flame retardant is added, and the flame retardant has a wide application prospect in the field of flame retardance of high polymer materials through a UL-94 V-0 grade test.

The invention discloses a resin-reinforced gel plugging agent and a preparation method and application thereof.The resin-reinforced gel plugging agent is obtained by conducting high-temperature curing and reaction on the following raw materials in percentage by mass under the acidic condition, specifically, the raw materials comprise 5%-15% of a water-soluble resin aqueous solution, 10%-30% of a polymer monomer, 1%-10% of a rheology regulating agent, 1%-10% of a curing agent, 1%-10% of a curing agent and the balance of water. The plugging agent comprises a water-soluble resin aqueous solution, 0.1%-1% of a cross-linking agent, 0.01%-0.1% of an initiator and the balance of water, and water-soluble resin in the water-soluble resin aqueous solution is melamine resin partially methylated. The plugging agent combines the advantages of good viscoelasticity and strong adaptability of conventional gel and excellent high temperature resistance and high strength after curing of resin high polymer materials; the obtained resin reinforced gel plugging agent has the advantages of excellent high temperature resistance, high structural strength and excellent plugging effect.

The application discloses a kind of high heat-conducting high endurance low-temperature phase change microcapsule preparation methods, comprising: step 1: using C7, C9 alkane preparation cryogenic phase change material emulsion;Step 2: using melamine resin prepolymer containing polyethylene glycol and hydrophobic silicon carbide powder containing nano silicon carbide preparation modified wall material prepolymer;Step 3: using cryogenic phase change material emulsion and modified wall material prepolymer preparation phase change microcapsule;Step 4: using silver mirror reaction to phase change microcapsule surface silver plating, obtain surface silver plating microcapsule.The low-temperature phase change microcapsule prepared, using C7, C9 low-temperature mixed alkane as microcapsule core material;Using melamine resin as microcapsule wall material, and wall material contains polyethylene glycol modified material, nano silicon carbide modified material to improve the toughness of microcapsule, thermal conductivity;Microcapsule surface silver plating to resist volatility, eliminate residual formaldehyde in wall material.The application solves the problem of low thermal conductivity and poor durability of cryogenic phase change material microcapsule.

The invention relates to the technical field of melamine resin high polymer materials, in particular to a high-heat-resistance melamine resin composite material which comprises a first component and a second component. The first component comprises a modified melamine resin prepolymer, a crosslinking accelerator, a curing agent and a first dispersing agent; the modified melamine resin prepolymer is prepared by modifying a melamine resin prepolymer through lignosulfonate and modified nano cellulose whiskers; the modified nano cellulose whiskers are prepared by modifying nano cellulose whiskers through a silane coupling agent; the second component comprises a composite reinforcing material; the composite reinforcing material comprises a carboxylated carbon nanotube, a montmorillonite-graphene hybrid, a second dispersing agent and a nucleating agent; the carboxylated carbon nano tube is prepared by reacting a carbon nano tube with strong acid; the montmorillonite-graphene hybrid is prepared from montmorillonite and graphene oxide through a reaction. Melamine resin is modified by adopting lignosulfonate and modified nanocellulose whiskers, meanwhile, a reinforcing material is compounded, and the heat resistance and the mechanical property of the melamine resin are improved in combination with a gradient curing process.

The disclosed panels generally comprise a protective layer composed of a paper impregnated with a melamine resin. The protective layer may be incorporated into a panel comprising a rigid composite core, such as a plastic composite core or a mineral composite core. Disclosed are also methods for manufacturing the panels.

The invention discloses a sound chamber module system which is provided with walls on four sides and comprises a door to create an internal space, a main body frame arranged on one side of the wall, a video device arranged in the center of the main body frame and a plurality of audio devices arranged on two sides of the periphery of the video device, and the wall comprises a concrete layer. The sound absorption material layer is installed on the concrete layer, and the sponge component is doped with ferrite components. The sound absorption material layer comprises a semi-non-combustible sheet layer in which water and melamine resin powder are dissolved.

The invention provides a melamine resin powder toughening granulation method and granulation equipment thereof, and relates to the technical field of thermosetting resin.The melamine resin powder toughening granulation method comprises the following preparation processes that firstly, thermoplastic resin powder is added into a solvent to prepare a thermoplastic resin solution; 2, wrapping inorganic rigid particles with a thermoplastic resin solution to obtain a mixture; 3, the mixture is subjected to spray drying and ground into superfine powder, and then the superfine powder is mixed with melamine powder to obtain composite particles; step 4, adding carboxymethyl cellulose and zinc stearate into the composite particle material, and carrying out double-roller pressing by virtue of a pelletizer, so as to obtain a flaky material; step 5, crushing and granulating the flaky material to obtain granules; sixthly, screening the particles through a screen to obtain finished particles; and 7, re-granulating the unqualified material until qualified uniform melamine resin particles are obtained. Through the technical improvement of the three steps of wrapping, spray drying and grinding, on the basis that the toughness and the flowability of the obtained granules are improved, the uniformity of products formed by compression molding is good.

sound insulation insert (10), which is designed in particular for the interior noise reduction of a residential ventilation system that can be installed in a wall opening and has at least one axial fan having a central motor hub, wherein the sound-insulating insert (10) is made essentially of an acoustically absorbing material at least on its surfaces in contact with the airflow, and wherein the sound-insulating insert (10) has an annular outer element (12) for insertion into a wall penetration duct, wherein the sound-insulating insert (10) has an inner element (14) in an area which, in the mounted position, adjoins the motor hub of the at least one axial fan in the residential ventilation system, which is connected to the outer element (12) via at least one web (16a-c), so that an annular gap-shaped passage for the airflow is formed between the outer and inner elements, which passes through the at least one The bridge (16a-c) is divided into sections (18a-c), characterized by the fact that the outer element (12), which includes at least one web (16a-c) and the inner element (14) are made of an acoustically absorbing rigid or soft foam material, in particular a melamine resin foam.

The present invention addresses the problem of providing a solvent-type base coating material composition that can achieve both reduction in energy load and storage stability during formation of a coating film while maintaining the appearance of the coating film.　This solvent-type base coating material composition comprises: (A) a pigment containing one or more kinds selected from the group consisting of coloring pigments and flake pigments; (B1) a specific hydroxy group-containing acrylic resin having a weight average molecular weight of 10,000-20,000; (B2) a hydroxy group-containing acrylic resin having a weight average molecular weight of 3,000-7,500; (C) a blocked isocyanate compound; (E) a melamine resin containing a fully alkylated melamine resin; (D) polymer crosslinked fine particles insoluble and stably dispersed in a solution of the hydroxy group-containing acrylic resin (B1); (F) an acid catalyst having no counterion; and (G) an amine compound containing a secondary amine compound. The solid content is 35% by mass or more. When a viscosity V1 is measured at 23°C under a shear rate of 0.1 / sec using a cone-plate viscometer, followed by 30 seconds of shearing with the shear rate changed from 0.1 / sec to 25,000 / sec and then one second of shearing with the shear rate returned to 0.1 / sec, and a viscosity V2 is subsequently measured, the viscosity recovery rate V2 / V1, which is the ratio of V2 to V1, is 90% or more.

The present invention relates to a high-temperature profile control agent for the development of heavy oil reservoirs, a preparation method thereof, and an application thereof. The raw materials for preparing the high-temperature profile control agent include melamines, aldehydes, a reinforcing agent, a coagulant, bentonite, and water. The high-temperature profile control agent provided by the present invention has high resistance to steam scour, strong plugging ability, and high thermal stability. Melamines and aldehydes undergo polycondensation to form melamine resin, and bentonite has strong adhesion, plasticity, and air permeability, and is used in small amounts and has low cost. The role of the coagulant is to adjust the pH value of the high-temperature profile control agent to within the weakly alkaline range of 8-9, thereby accelerating the progress of the melamine polycondensation reaction. The role of the reinforcing agent is to further improve the plugging strength of the profile control agent. The high-temperature profile control agent of the present invention is suitable for profile control of steam drive well groups and profile control and channeling sealing of high-cycle throughput wells, as well as high-pressure steam channeling sealing of low-cycle throughput wells.

The utility model belongs to the technical field of melamine resin production, and particularly relates to a melamine resin air drying device which comprises an air drying box. The top of the air-drying box body is connected with an air-drying box top cover through a hinge; the side wall of the air-drying box body is connected with an air-drying box side door through a hinge; the top of the air drying box top cover is fixedly connected with a motor; the output end of the motor is fixedly connected with a fixed seat; according to the step, an air drying box body, a motor, a fixing seat, a supporting frame, a fixing assembly and a clamping assembly are arranged, so that the paper base soaked with the melamine resin can be air-dried, the paper base soaked with the melamine resin is in a moving state in the air drying process, and the air drying effect on the paper base is improved; and moreover, when the paper base soaked with the melamine resin is air-dried, the situation that the paper base is stacked and attached is reduced, then the paper base soaked with the melamine resin is air-dried more uniformly, and the air-drying effect on the melamine resin is improved.

The invention belongs to the technical field of melamine resin preparation, and provides yellowing-resistant antioxidant melamine resin and a preparation method thereof. The preparation method comprises the following steps: firstly, by taking melamine, formaldehyde and a modifying reagent as raw materials, preparing a melamine prepolymer by adjusting reaction conditions; secondly, a quinone-phenol hybrid antioxidant is designed and prepared, and through introduction of a hybrid molecular structure, the quinone-phenol hybrid antioxidant has excellent free radical capture ability and oxidation inhibition effect; then, a multifunctional light stabilizer containing hindered amine, phosphine and triazine groups is synthesized, and the light stability and weather resistance of the material are remarkably improved by utilizing an intermolecular synergistic effect; and finally, uniformly dispersing and curing the melamine prepolymer, an antioxidant, a light stabilizer and other auxiliaries, and carrying out multi-step temperature regulation and curing treatment to prepare the melamine resin material with excellent performance.

The invention discloses a production device of melamine resin for sound-insulating and flame-retardant mineral wool boards for suspended ceilings, comprising a lifting drive mechanism, a sliding component, a stirring mechanism and a kettle body, wherein the upper end of the kettle body is provided with a lifting drive mechanism, the driving end of the lifting drive mechanism is provided with a stirring mechanism located in the kettle body, the stirring mechanism is provided with a sliding component which is slidably and sealedly connected to the inner wall of the kettle body, the sliding component comprises a sliding base and an opening and closing mechanism which is provided on the sliding base and through which fluid can pass, the sliding base is provided with a stirring mechanism, the stirring mechanism comprises a plurality of stirrers, a rotating drive mechanism for driving the stirrers to rotate upward and a rotating shaft, the rotating shaft is provided with an air intake channel and an exhaust channel, and compared with the prior art, the stirring range can be increased, the stirring and mixing effect is good, and the work efficiency is improved.

This invention discloses a two-step method for preparing nitrogen-doped three-dimensional network phenolic resin-based composite carbon materials and their applications. The method uses an alkaline environment provided by ammonia to induce addition condensation polymerization of phenol and formaldehyde to obtain a preliminary nitrogen-doped phenolic resin. This resin is then mixed with melamine resin to achieve a second step of nitrogen introduction, and after being composited with sodium alginate, it is cross-linked with CaCl2 to obtain a three-dimensional hydrogel precursor. After carbonization and activation treatment, a nitrogen-doped porous carbon material is obtained. This material possesses both micro- and mesoporous synergy and multiple types of nitrogen functional sites, exhibiting high specific surface area capacitance and excellent cycling stability in supercapacitors. Compared with existing schemes that only use NaOH without introducing dual-source nitrogen doping (such as CN119724955A), this invention achieves synergistic optimization of structure, chemical sites, and transport through ammonia pre-doping, secondary nitrogen doping with melamine resin, and a ternary interpenetrating network. The process is simple, uses inexpensive raw materials, and is suitable for large-scale production.

The invention discloses anti-fingerprint melamine impregnated paper and a preparation method thereof.The preparation method comprises the following steps that S1, formaldehyde, melamine, diethylene glycol and a hydrophobic and oleophobic additive are mixed and stirred, a fluorocarbon modifier is added after the temperature is increased, a heat preservation reaction is conducted, and modified melamine resin is obtained; and S2, carrying out twice impregnation curing on raw paper by using the modified melamine resin obtained in the step S1 to obtain the anti-fingerprint melamine impregnated paper. According to the invention, the self-cleaning function can be realized. The embossment template is controlled through a pressing and pasting process, a micron-nano composite structure (similar to a lotus leaf mastoid) is formed, and the hydrophobicity is enhanced.

The invention discloses a melamine ware made of a melamine composite material and a manufacturing method of the melamine ware. The melamine ware is a ware forming body which is made of the composite material formed by mixing a melamine powder granular raw material, melamine secondary material fragments and melamine resin bright powder through one-time hot press forming operation. The melamine vessel comprises a combined body and a plurality of melamine secondary material fragments, wherein the melamine secondary material fragments are irregular fragments with different sizes or various colors formed by utilizing a melamine secondary material subjected to hot press molding and performing crushing treatment; wherein in the hot press molding operation, the melamine powder granular raw material and the melamine resin bright powder can be hot-pressed and melted into a combined body, and the combined body is tightly adhered and coated on the outer surface of each melamine secondary material fragment; therefore, the defects that the surface of the vessel is rough and unsmooth and the vessel is easy to peel and fall off when being collided due to the fact that the melamine secondary material fragments are easy to protrude out of the surface of the vessel are overcome.

The invention relates to the technical field of coatings, in particular to a thin coating type low-gloss metal floor drain protective coating with good acid and alkali resistance and a preparation method of the thin coating type low-gloss metal floor drain protective coating. Functional matting resin, high-acid-value acrylic resin, melamine resin and epoxy resin are innovatively compounded to construct an extremely compact multiple cross-linked network, a special adhesion promoter and an anti-corrosion additive are supplemented to enhance interface protection, and a solvent and a process are optimized, so that the corrosion resistance of the coating is improved, and the corrosion resistance of the coating is improved. According to the invention, all the components play a supernormal synergistic effect in a coating with the thickness of 8-10 microns, so that organic unification of three key performances of thin coating, low gloss and high acid and alkali corrosion resistance is finally realized, and the technical problems that a metal floor drain is easy to corrode and poor in appearance under the thin coating condition are effectively solved.

The invention discloses a double-sided hydrogel colorimetric sensor for H2S leakage monitoring in an extreme environment and a preparation method of the double-sided hydrogel colorimetric sensor, and belongs to the technical field of gas sensors. The double-sided hydrogel colorimetric sensor comprises a sponge network loaded with a CoCl2 / SbOCl color developing agent and a tough film loaded with the SbOCl color developing agent, wherein a sponge framework of the double-sided hydrogel colorimetric sensor is melamine resin nano sponge. The double-sided hydrogel colorimetric sensor has a double-sided characteristic, SbOCl is introduced, and heat resistance and durability are promoted by utilizing hydrophobicity and flame retardance of the SbOCl and a strong cross-linking effect of the SbOCl and PVA (Polyvinyl Alcohol); coCl2 is introduced, and on the basis of an ionic crosslinking and hydration action mechanism, the generation of ice crystals is remarkably inhibited, the anti-freezing performance is optimized, and the functional stability at low temperature is improved; a melamine resin nano sponge framework is introduced, so that the physical structure stability is fundamentally enhanced, and mechanical support and stress resistance are provided.

The utility model discloses a horizontal weighing machine, which belongs to the technical field of commodity shelves, and is characterized in that the horizontal weighing machine comprises a support frame and a mounting frame, an oil cylinder is mounted on the side surface of the mounting frame, a bearing piece is mounted on the telescopic part of the oil cylinder, the bearing piece comprises a base, a connecting plate is arranged on the side surface of the base, and the connecting plate is arranged on the connecting plate. A connecting plate is installed on the supporting frame, an inserting hole plate is installed on the connecting plate, the base is slidably connected with the mounting frame, a discharging mechanism is installed on the base, a loading mechanism is installed on the portion, located on the discharging side of the discharging mechanism, of the supporting frame, and fixing mechanisms are arranged on the portions, located on the two sides of the oil cylinder, of the top of the mounting frame. The fixing mechanism comprises an air cylinder, an inserting rod is installed on a telescopic portion of the air cylinder, and the inserting rod is matched with the inserting hole plate. According to the device, melamine resin powder does not need to be manually filled up and down on a machine table top, material weighing is accurate, efficiency is high, operation is easy and convenient, and the discharging speed is increased.