39 results about "Dimethylammonium chloride" patented technology

The described invention is a disinfectant that has a bactericidal and fungicidal effect. Optimally, the agent is diluted more than 70 times before use, thereby achieving pH neutrality of the solution. The agent is also effective, bactericidal and fungicidal, and when diluting the final formulation up to 200 times. The improvement of the disinfectant is based on the presence of the active substance didecyldimethylammonium chloride. The agent also contains sodium chlorite. In this invention, polyethylene glycol, in addition to the function of a polymer carrier, also has the function of a stabilizer of the solution of the active substance, a non-ionic surfactant.

The application discloses an active oxygen response type bacteriostatic and repair promoting hydrogel and a preparation method and application thereof, the hydrogel is formed by disulfide bond cross-linked hydrogel in response to active oxygen free radicals in the vagina of vaginitis patients through thiol modified hyaluronic acid (HASH), and can enhance in-vivo retention by thiol and vaginal tissue interaction. Cationic surfactant such as didecyldimethylammonium chloride (DDAC) as the bacteriostatic component of the hydrogel, efficiently killing pathogenic bacteria while having good biocompatibility, and is not prone to cause bacterial drug resistance. As a natural immune regulator, beta-glucan regulates the vaginal microenvironment, promotes the polarization of macrophages into anti-inflammatory M2 type and promotes cell migration, etc., to promote the repair of the vaginal immune barrier, regulate the vaginal flora, and reduce the probability of vaginitis recurrence. The HASH hydrogel provides an efficient, convenient and highly transformative potential strategy to provide more choices for the treatment of vaginitis.

The invention belongs to the technical field of photovoltaic cell processing materials, and relates to an RCA cleaning additive for a TOPCon cell POLY FINGER process and a preparation method of the RCA cleaning additive. The invention relates to an RCA cleaning additive for a TOPCon battery POLY FINGER process. The RCA cleaning additive comprises the following substances in parts by weight: 0.5-5 parts of a protective agent; 0.1 to 2.0 parts of a catalyst; 0.2 to 3.0 parts of a stabilizing agent; 0.3 to 2.5 parts of a selective adsorbent; 0.1 to 3.0 parts of a surfactant; 0.05 to 1.0 part of a defoaming agent; the protective agent is prepared from at least two of sodium 3-carboxybenzenesulfonate, tetraethyl ammonium acetate, methyl tributyl ammonium chloride, benzyl trimethyl ammonium chloride and bis (2-ethoxyl) dimethyl ammonium chloride. The selection range of the core component and the protective agent of the RCA cleaning additive is defined, and a multi-component synergistic effect system is constructed through reasonable matching. According to the present invention, the problems of single protection and non-uniform corrosion of the existing additive are effectively solved, the corrosion requirement of the laser region can be met, the POLY layer can be comprehensively protected, the foundation is laid for the subsequent battery passivation and the performance improvement, and the core cleaning requirement of the TOPCon battery POLY FINGER process can be met.

The application provides a MgAl2O4 carrier and a preparation method and application thereof, and relates to the technical field of catalysts. Urea, a soluble aluminum salt, a soluble magnesium salt, polydiallyldimethylammonium chloride and water are mixed to carry out a hydrothermal reaction to obtain a precipitate; the molar ratio of the urea, aluminum elements in the soluble aluminum salt, magnesium elements in the soluble magnesium salt and the polydiallyldimethylammonium chloride is 4.5:2:1:(1-2); the precipitate is sequentially dried and calcined to obtain the MgAl2O4 carrier. The prepared MgAl2O4 carrier is used as a catalyst carrier in a high-temperature and high-pressure dry reforming reaction of methane and carbon dioxide, and excellent stability is exhibited; under high-temperature and high-pressure conditions of 850 DEG C and 2 MPa, the MgAl2O4 carrier is evaluated for 230 hours, and the morphology of the MgAl2O4 carrier before and after the reaction has no obvious difference, the specific surface area changes little, and excellent mechanical strength and chemical stability are shown.

This invention belongs to the technical field of rubber hoses, specifically relating to an antibacterial hose for conveying food and its manufacturing process. It comprises an inner rubber layer coated with a quaternary ammonium salt antibacterial agent, a reinforcing layer treated with the antibacterial agent, and an outer rubber layer treated with antifungal agents. The quaternary ammonium salt antibacterial agent is a compound of food-grade alkyl dimethyl benzyl ammonium chloride and disdecyl dimethyl ammonium chloride. The reinforcing layer is prepared by impregnating / spraying polyester fibers with the quaternary ammonium salt antibacterial agent, followed by drying and curing, and then simultaneously winding and laminating it with food-grade low-density polyethylene. The outer rubber layer is uniformly distributed with a pre-dispersed antifungal agent, effectively inhibiting the growth of mold in the high-temperature and high-humidity environment of food processing. The antibacterial hose is manufactured through a process of spraying the inner rubber layer with the antibacterial agent, impregnating the reinforcing layer with the antifungal agent, pre-dispersing the antifungal agent, and mixing. This process achieves beneficial effects such as a >99.99% inhibition rate against common pathogenic bacteria, long-lasting antibacterial performance, zero-mold growth on the outer rubber layer (grade 0), stable mechanical properties, and excellent anti-aging properties.

The invention relates to a surfactant for shampoo and a preparation method of the surfactant, and belongs to the technical field of surfactants. The surfactant for shampoo comprises a compound amino acid surfactant and a synergistic surfactant, the composite amino acid surfactant is prepared by taking corn oil, coconut oil and L-alanine as raw materials on the basis of an existing process, and the synergistic surfactant comprises sodium cocoyl isethionate, cocamidopropyl PG-sodium dimethyl ammonium chloride phosphate and potassium cocoyl hydrolyzed oat protein. After the sebum removing agent is added into the shampoo, the sebum removing effect can be better than that of SLES without high proportion and 4% mass content, the substitution effect is excellent, and the performance and the cost are both considered.

An object of the present invention is to provide a hair cosmetic which has an appropriate viscosity and can continuously provide a feeling effect such as hair manageability, finger combability, and softness.SOLUTION: (A) contains (a1) a highly polymerized silicone having a mean polymerization degree of 2000 to 20000 and a silicone having a mean polymerization degree of less than 2000, and (B) contains (b1) a dicocoyldimethylammonium chloride or a three chain-type quaternary ammonium salt-type cationic surfactant, the (C) higher alcohols include (c1) higher alcohols that are liquid at 25 °C and have a branched structure, and higher alcohols other than the (c1) components.SELECTED DRAWING: None

The invention relates to the technical field of high-purity noble metal catalysts, in particular to a preparation method of high-purity iridium powder, which comprises the following steps: iridium dissolution and liquid preparation: adding chloroiridic acid into deionized water, stirring and dissolving, and filtering to remove insoluble substances to obtain an iridium solution A; complexing and precipitating iridium: adding didecyl dimethyl ammonium chloride into the iridium solution A, heating to 80-90 DEG C, separating out a large amount of yellow precipitate, and filtering when the solution becomes colorless from orange red to obtain iridium-containing precipitate B; recrystallization: adding the iridium-containing precipitate B into deionized water for recrystallization, and filtering to obtain an iridium-containing precipitate C; dissolving the iridium-containing precipitate C to prepare a solution, namely adding the iridium-containing precipitate C into dilute ammonia water with the pH value of 8-9 to be dissolved to obtain an iridium solution D, and filtering to remove trace insoluble impurities; and reducing to obtain high-purity iridium powder: adding hydrazine hydrate into the iridium solution D under a micro-boiling condition for reaction, filtering after reduction to obtain iridium powder, boiling and washing with aqua regia, filtering, washing with deionized water, and drying in vacuum to obtain the high-purity iridium powder.

The application relates to the field of welding technology, and particularly discloses a water-soluble flux and a preparation method thereof. The water-soluble flux comprises the following raw materials in parts by weight: 6-12 parts of a borate ester covalent activator; 3-8 parts of cucurbituril hydrate; 0.01-2 parts of an inhibitor; 1-3 parts of a modified graphene quantum dot solution; 1-5 parts of a cyclic ether solvent; 0.5-2 parts of a metal-organic framework material containing mercapto groups; and 68-88.5 parts of deionized water. The modified graphene quantum dot solution is obtained by modifying graphene quantum dots with dioctadecyldimethylammonium chloride. The flux of the application can effectively solve the problem of water residue in the later stage after the activator is decomposed and volatilized in the early stage of welding by combining the water-soluble flux with the cyclic ether solvent, thereby reducing the problems of virtual welding, bubble defects and the like of the welding points, and effectively improving the strength and reliability of the welding points.

The application provides an MHM electrode material and a preparation method and application thereof, and belongs to the technical field of electrochemical desalination. The MHM electrode material is Ti3C2T x MXene, polystyrene microspheres are treated by a polydien dimethyl ammonium chloride solution, and then are stirred and reacted with Ti3C2T x MXene, and then are subjected to freeze drying and pyrolysis to obtain the MHM electrode material. The Ti3C2T x MXene is constructed into a three-dimensional spherical structure, the stacking problem of traditional MXene layers is avoided, the advantages of the good conductivity, large surface area and excellent mechanical properties of the Ti3C2T MXene are fully exerted, the structural stability, the electrochemical performance and the desalination capacity are significantly improved, the MHM electrode exhibits excellent adsorption capacity, fast ion transmission rate and good cycle stability in a CDI device, and a new idea is provided for CDI material design.

The invention relates to the technical field of food packaging materials, discloses a long-acting antibacterial mildew-proof modified PE fresh-keeping packaging film and a preparation method thereof, and aims at solving the problems that an antibacterial agent of an existing antibacterial film is prone to failure, processing thermal degradation is caused, and environment false triggering is caused. The preservative film comprises a PE base material and a mesoporous silica nano-carrier deeply buried at a position of 5-10 [mu] m in the PE base material, the inner wall of a channel of the carrier is covalently modified with a carboxymethyl functional group and is loaded with didecyl dimethyl ammonium chloride, and chemical anchoring is performed through a KH550 silane coupling agent and the PE base material subjected to plasma treatment; only at pH lt; 6 and relative humidity gt; and the release of the antibacterial agent is triggered under the synergistic condition of 80%. According to the scheme, on-demand accurate release, high light transmittance, excellent processing stability and long-acting antibacterial and mildew-proof performance are realized.

The present invention relates to the use of an animal feed additive that reduces the toxic effects of mycotoxins, especially fumonisin B1 and zearalenone. This additive is a mycotoxin adsorbent consisting of an organically modified phyllosilicate with 71% substitution of its cation exchange capacity with the organic compound dioctadecyldimethylammonium chloride.

This invention belongs to the field of solid waste treatment technology, specifically relating to a quaternary ammonium salt ionic liquid microemulsion for heavy oil desorption, its method, and its application. The quaternary ammonium salt ionic liquid microemulsion for heavy oil desorption of this invention, by weight, comprises 0.1-0.8 parts of a quaternary ammonium salt ionic liquid surfactant, 17.2-22.9 parts of n-propanol, 20-25 parts of n-hexane, and 56-59 parts of water; wherein the quaternary ammonium salt ionic liquid surfactant is 1-alkyl-(2-hydroxyethyl)-dimethylammonium chloride. The quaternary ammonium salt ionic liquid microemulsion for heavy oil desorption of this invention is prepared using a quaternary ammonium salt ionic liquid surfactant, n-propanol, n-hexane, and water as raw materials. The microemulsion is an oil-in-water type, characterized by low surface tension, strong solubilizing ability, low dosage, simple treatment process, and recyclability.

This invention discloses an antifouling and antibacterial TPU yacht film and its preparation method, relating to the field of polymer materials technology. In preparing the antifouling and antibacterial TPU yacht film, this invention involves reacting amino POSS with 2-maleimide acetaldehyde, 5-(4-hydroxy-3-methoxy-benzylcarbamoyl)-valeric acid, and ethyl isocyanate to obtain modified POSS; reacting 5-hydroxymethylfurfural with 3-aminopropyl-3-hydroxypropyl dimethylammonium chloride to obtain a chain extender; reacting isophorone diisocyanate sequentially with hydroxyl-terminated methyl-3,3,3-trifluoropropyl (siloxane and polysiloxane) and the chain extender to obtain modified thermoplastic polyurethane; mixing the modified thermoplastic polyurethane with the modified POSS, pouring the mixture into a mold, and thermosetting to obtain the antifouling and antibacterial TPU yacht film. The antifouling and antibacterial TPU yacht film prepared by this invention exhibits excellent antibacterial, antifouling, self-healing, and mechanical properties.

The invention relates to the technical field of cosmetics, and discloses an external-use allergy-relieving itching-relieving bioactive biomimetic membrane skin care preparation and a preparation method thereof.The preparation is prepared from, by weight, red ginseng extract rich in rare ginsenoside, colloidal oat powder, cetostearyl alcohol and distearyl dimethyl ammonium chloride; the preparation method comprises the following steps: firstly, carrying out ultrasonic activation treatment on the red ginseng extract, then carrying out high-temperature emulsification on the oil phase and the water phase, and finally, carrying out programmed control cooling on the obtained emulsion. According to the method, all the components are subjected to in-situ self-assembly on the skin surface to form the layered liquid crystal biomimetic membrane; the biomimetic membrane structure simulates skin cuticle lipid, and can effectively reduce percutaneous moisture loss and repair a skin barrier; meanwhile, as a carrier, rare ginsenoside is promoted to permeate into the skin, so that instant and long-acting allergy-relieving and itching-relieving effects are realized.

The present application relates to the technical field of disinfection in the breeding industry, and specifically discloses a spray composite disinfectant as well as a preparation method and application thereof.The spray composite disinfectant provided by the present application comprises the following components in mass percentage: 0.8-1% of quaternary ammonium salt surfactant, 1-1.5% of alkyl polyglycoside, 5-8% of cosolvent, and the balance of water; wherein the quaternary ammonium salt surfactant is a mixture of modified bisdecyl dimethyl ammonium chloride and hexadecyl dimethyl benzyl ammonium chloride; the alkyl polyglycoside is C12-C14 alkyl polyglycoside; and the modified bisdecyl dimethyl ammonium chloride is gamma-glycidyl ether oxygen propyl trimethoxysilane modified bisdecyl dimethyl ammonium chloride.The spray composite disinfectant provided by the present application is free of chlorine and phenols, is safe and non-toxic, is green and healthy, has a simple preparation and use method, has good compatibility, has good storage performance, and is easy to realize large-scale production.

The invention discloses hollow carbon microspheres as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) synthesizing polymethyl methacrylate microspheres in a water-phase system by taking methyl methacrylate as a raw material and potassium persulfate as an initiator; (2) dispersing the polymethyl methacrylate microspheres obtained in the step (1) in a polydiene dimethyl ammonium chloride solution for surface charge modification; (3) synthesizing a phenolic resin shell layer on the surface of the polymethyl methacrylate microsphere modified in the step (2) to obtain a core-shell polymer; (4) performing high-temperature treatment on the core-shell polymer obtained in the step (3) in an inert atmosphere to obtain hollow carbon microspheres; the method is simple in operation steps and generates less wastewater, and the prepared hollow carbon microspheres are uniform in particles, good in sphericity and easy to adjust in particle size, show excellent performance in an electromagnetic shielding test, reduce the maximum reflection loss and increase the effective wave-absorbing bandwidth.

The application discloses a method for detecting perchlorate based on a silver nanofilm substrate. The application uses polydiene dimethyl ammonium chloride and sodium diethylthio carbamate as a protective agent, polyvinyl pyrrolidone as a stabilizer, and sodium borohydride-ethylene glycol as a reducing agent to obtain polydiene dimethyl ammonium chloride or diethylthio amino modified silver nanoparticles with high activity through one-pot synthesis or microwave synthesis, which are used as a surface-enhanced Raman scattering substrate for the detection of perchlorate. The perchlorate detection technology provided by the application has the advantages of simple preparation process, green and environmentally-friendly synthesis process, high sensitivity and the like, and provides a new technical path for the accurate detection of perchlorate in water.

This invention discloses a composite pyrolysis catalyst for desulfurization before coal combustion and a method for pre-treatment of coal before combustion. The composite pyrolysis catalyst comprises 2-6 parts of a penetrant, 10-40 parts of a swelling agent, and 2-30 parts of a solvent. The penetrant is selected from one or a combination of two or more components selected from azone, linoleic acid, or octadecyl dimethyl ammonium chloride. The swelling agent is selected from one or a combination of two or more components selected from octadecyl dimethyl ammonium chloride, formamide, polyethylene glycol 600, ethylene glycol butyl ether, isopropanol, and propylene glycol methyl ether. The solvent is selected from one or a combination of two or more components selected from propylene glycol butyl ether, ethylene glycol, cyclohexanol, cyclohexanone, dichloromethane, xylene, methanol, and n-butanol. After treatment with this invention, ultra-low sulfur and low ash ultra-pure coal can be obtained, while ensuring that its physical and chemical properties remain unchanged.

This invention relates to the field of antibacterial material application technology, specifically a method for preparing dual-targeted antibacterial and osteogenic nanomaterials for implant modification. The nanomaterials are prepared by mixing anhydrous citric acid as a carbon source and polyhexamethylene guanidine hydrochloride and diallyl dimethyl ammonium chloride as heteroatom dopant sources to provide guanidine and ammonium groups, respectively. This invention exerts stable antibacterial efficacy against six common infectious bacteria by inhibiting biofilms, disrupting bacterial membranes, and inhibiting bacterial energy metabolism, avoiding antibacterial failure and bacterial resistance risks caused by biofilms and the closed bone marrow cavity microenvironment. Simultaneously, it promotes stable osteogenic properties by promoting glutathione production, clearing ROS, and promoting mitochondrial metabolism to improve bone regeneration in the infected microenvironment, achieving a dual antibacterial and osteogenic effect, effectively solving the defects of lacking osteogenic function and insufficient biosafety.

The invention relates to the technical field of flange preparation, and provides a flange for a submarine pipeline, the flange comprises a base body, a reinforcing phase and a corrosion-resistant coating coated on the surface of the base body, the base body comprises the following components in percentage by weight: C, Si, Mn, P, S, Cr, Ni, Cu, Sr, B, iron and other inevitable impurities; the corrosion-resistant coating comprises the following raw materials in parts by weight: 55-60 parts of polyvinyl chloride, 1-2 parts of a plasticizer, 2-4 parts of organosiloxane, 1-2 parts of a lubricant, 2-4 parts of a corrosion inhibitor and 45-50 parts of a solvent; the reinforcing phase is zirconium oxide coated molybdenum carbide; and the corrosion inhibitor is lauryl hydroxyethyl imidazoline and dioctadecyl dimethyl ammonium chloride. According to the technical scheme, the problems of insufficient corrosion resistance and low strength of the flange for the submarine pipeline in the prior art are solved.

The invention belongs to the technical field of microorganisms, and particularly relates to glyoxal modified polyacrylamide as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, mixing seed solutions of pseudomonas chlororaphis, rhodococcus roseus and phytobacterium plantarum, inoculating into a fermentation culture medium, and culturing to obtain a mixed seed solution; acrylonitrile is fed in a gradient manner, and the reaction is continued to obtain acrylamide; dissolving acrylamide and diallyldimethylammonium chloride in water to obtain a mixed solution, adding an initiator, and heating for reaction to obtain a cationic polyacrylamide aqueous solution; and finally, reacting the cationic polyacrylamide aqueous solution with the glyoxal aqueous solution. According to the preparation method, a microbial fermentation synthesis method is adopted, the acrylamide monomer can be obtained through a one-step fermentation method by utilizing the synergistic effect of pseudomonas chlororaphis, rhodococcus roseus and phytobacterium plantarum, and glyoxal modified polyacrylamide is finally obtained, so that the paper performance can be obviously improved, and the retention rate is increased.

The present application relates to the technical field of packaging materials, in particular to a kind of multilayer high barrier paper-based composite packaging material and preparation method thereof, from outside to inside, it includes outer protective layer, printing paper base layer, adhesive layer, high barrier function layer, adhesive layer, inner heat-seal layer in sequence;The preparation method of nano barrier filler contained in the high barrier function layer component: step 1, purification of montmorillonite;Step 2, modification of distearyl dimethyl ammonium chloride;Step 3, silane coupling agent grafting;Step 4, graphene oxide composite.The composite packaging film of the present application, through the chemical means of "organicization-coupling-covalent bonding", constructs synergistic barrier network and "filler-toughening agent" interaction network, greatly improves the barrier property, toughness and strength of the material.

The invention discloses color paste for leather printing and a preparation method of the color paste. The color paste for leather printing comprises resin, pigment, a wetting dispersant, a wetting penetrant, an ultraviolet light absorber, a hindered amine light stabilizer, a flatting agent, a chitosan derivative, a thickening agent, a defoaming agent and deionized water. The resin is an organic silicon modified polyurethane acrylic acid hybrid; the wetting dispersant is composed of polycarboxylate and double-tailed polyether according to the mass ratio of 1: 1, and the polycarboxylate is obtained through a polymerization reaction of methacrylic acid, diallyldimethylammonium chloride, N-vinyl pyrrolidone and methoxy polyethylene glycol methacrylate. The color paste for leather printing provided by the invention has excellent color fastness to rubbing and color fastness to light.

This invention discloses a mildew- and corrosion-resistant particleboard and its preparation method. The mildew- and corrosion-resistant particleboard prepared by this invention has high mechanical strength and good anti-corrosion and mildew-resistant effects. It is made from the following raw material components in parts by weight: 800-1200 parts of particleboard and 50-200 parts of composite adhesive. The composite adhesive is made from the following components in parts by weight: 35-160 parts of soybean glue, 5-20 parts of curing agent, 5-10 parts of mildew inhibitor, and 5-10 parts of corrosion inhibitor. The combined use of polyamide polyamine epichlorohydrin and dimethyloldihydroxyethylene urea in the adhesive components improves the static bending strength of the particleboard; the combined use of n-butylbenzisothiazolinone and dimethoxymethylsilylpropyloctadecyldimethylammonium chloride improves the mildew resistance of the particleboard; and the combined use of modified chitosan copper complex and ammonium pentaborate improves the corrosion resistance of the material, with synergistic effects.

The present application relates to modified organic hydrotalcite paste for cotton fabric insoluble azo dye printing and its preparation method and application. The modified organic hydrotalcite paste is prepared by the following method: firstly, hydrotalcite is prepared by using nitrate and sodium salt; then, organic polymer is prepared by using acrylic acid, diallyl dimethyl ammonium chloride and allyl polyoxyethylene ether; finally, modified organic hydrotalcite is prepared by reacting hydrotalcite and organic polymer. The modified organic hydrotalcite paste prepared by the present application is used for cotton fabric insoluble azo dye printing, and the printed fabric prepared has the characteristics of higher paste removal rate (higher than 92%), good softness, high profile definition, higher penetration rate (higher than 87%), higher dry rubbing fastness and higher soaping color fastness grade, and has good application prospect.

The invention belongs to the technical field of electrochemical energy storage materials and devices, and particularly relates to an MWCNT (at) PDDA composite material, a preparation method and application in a zinc-iodine battery. The preparation method specifically comprises the following steps: ultrasonically dispersing multi-walled carbon nanotubes with different outer diameters in deionized water, adding a polydienyldimethylammonium chloride solution, stirring for reaction, washing and drying to obtain the MWCNT (at) PDDA composite material. According to the invention, PDDA molecular conformation is regulated and controlled by utilizing the curvature of the multi-walled carbon nanotubes, so that an interface microenvironment with strong adsorption and fast conversion capability on polyiodide is formed. When the prepared MWCNT (at) PDDA composite material is used as the positive electrode material of the zinc-iodine battery, shuttling of multi-iodide is effectively inhibited, the coulombic efficiency, the cycle life and the stability of the zinc-iodine battery are remarkably improved, and the preparation process is simple to operate, low in cost and suitable for batch production.

The invention relates to the field of combined type tooth socket cleaning agents, and discloses a combined type tooth socket cleaning agent and a preparation method thereof.The combined type tooth socket cleaning agent is divided into a liquid agent and a solid tablet, and the color can be changed after the liquid agent and the solid tablet are fused; the liquid medicament is prepared from the following components: purified water, propylene glycol, sodium benzoate, Tween, cocamidopropyl betaine, didecyl dimethyl ammonium chloride, sodium pyrophosphate, sodium tripolyphosphate, saccharin sodium, PEG-hydrogenated castor oil, essence, a purple sweet potato extract and lactic acid; the combined tooth socket cleaning agent is characterized in that a solid tablet is prepared from the following components: sodium bicarbonate, citric acid, sorbitol, potassium carruvate (potassium hydrogen persulfate), sodium benzoate, glucanase, amylase, papain, lysozyme, lactase, a PVPVA (Polyvinyl Polyvinyl Alcohol) copolymer, sodium lauryl sulfoacetate and polyethylene glycol. The visual cleaning process is provided through color change, meanwhile, a large number of bubbles can be generated, the liquidity of liquid is improved, and soft dirt on the tooth socket is effectively removed through the physical scouring effect.

The invention belongs to the technical field of catalysts, and particularly relates to a mesoporous palladium-silver alloy electrocatalyst for efficiently synthesizing cyclohexanone-oxime as well as a preparation method and application of the mesoporous palladium-silver alloy electrocatalyst. The preparation method is characterized by comprising the following steps: dissolving dioctadecyl dimethyl ammonium chloride in a mixed solution of deionized water and ethanol, sequentially adding a sodium hydroxide solution, a metal precursor chloropalladic acid, a silver nitrate solution and the like, and washing and drying to obtain the catalyst. The one-step soft template co-reduction method is adopted for preparation, the obtained catalyst has high electronic conductivity so as to ensure efficient charge transfer, the carrier-free design avoids active component falling or carrier corrosion instability, the palladium-silver alloy phase component enhances the electrochemical dissolution resistance, and the defects that an existing electrocatalyst is low in Faraday efficiency and low in cost are overcome. The yield is low, and the like.

This invention discloses a plant-based deodorizer. It comprises the following components in parts by weight: 20-40 parts plant extract, 2-5 parts surfactant, 5-10 parts fragrance, 3-8 parts antibacterial agent, and 80-160 parts water. This plant-based deodorizer effectively removes odors from ambient air and exhibits good antibacterial properties. The combined use of *Pyrrosia lingua* extract and *Gymnocalycium chinense* fruit extract, as well as the combined use of *Yucca sylvestre* extract and *Centella asiatica* extract, enhances the deodorizing effect. The combined use of benzalkonium chloride and octyldecyl dimethyl ammonium chloride enhances the antibacterial effect and provides a synergistic effect.