27results about How to "Hydrophobic" patented technology

The preparation method comprises the following steps: firstly, adding flaky, fibrous and granular solid flame-retardant fillers with large particle size difference into water-based resin diluted by clear water, uniformly mixing and stirring, and then spraying or brushing on the surface of a base material, therefore, a coating with sponge-like porous and capillary channel intercommunication structures inside and on the surface is formed on the surface of the base material. Secondly, siloxane is dissolved in a solvent and evenly brushed or sprayed on the surface of the coating, and the siloxane permeates into the coating through the holes and the capillary channels; thirdly, dispersing macromolecular resin and inorganic nanoparticles in a solvent, stirring to form a uniform dispersion liquid, and then infiltrating the macromolecular resin and the inorganic nanoparticles into the pores and capillary channels wrapped and modified by siloxane in a spraying or brushing manner, and drying at room temperature to obtain the flame-retardant, super-hydrophobic, anti-seepage and anti-fouling multifunctional coating material.

The invention relates to the technical field of dredged soil curing agents, in particular to a dredged soil pneumatic mixed flow curing agent and a preparation method thereof. The dredged soil pneumatic mixed flow curing agent is prepared from the following raw materials in parts by weight: 20 to 50 parts of cement, 10 to 40 parts of fly ash, 10 to 40 parts of mineral powder, 20 to 50 parts of quick lime, 0.01 to 0.1 part of retarder, 0.01 to 0.05 part of flocculant, 0.005 to 0.01 part of silane coupling agent and 0.1 to 0.3 part of hydrophobic adsorption type admixture. The hydrophobic adsorption type admixture, the silane coupling agent and the flocculating agent are doped into the curing agent raw materials at the same time and have a synergistic enhancement effect, so that the cohesiveness and the pumpability of curing agent slurry can be remarkably improved, the adaptability of the curing agent slurry and dredged soil in a pneumatic mixed flow process can be enhanced, the sensitivity to the water content of the dredged soil is reduced, and the curing agent has the advantages of being simple in preparation process and low in cost. The solidified soil is relatively stable in later-stage reinforcement, the solidifying agent is used in dredged soil pneumatic mixed-flow solidification production, the pumping constructability, the dispersion resistance in water and the hardening performance of the solidified soil can be remarkably improved, and the solidifying agent is suitable for filling projects such as sea reclamation and backfilling.

The invention belongs to the technical field of concrete materials, and particularly relates to high-impermeability concrete suitable for a fabricated pavement and a preparation method of the high-impermeability concrete. The high-impermeability concrete suitable for the fabricated pavement is prepared from the following raw materials in parts by weight: 360-550 parts of a cementing material, 300-360 parts of fine aggregate, 1-3 parts of a water reducing agent, 1-3 parts of a waterproof agent, 2-5 parts of polyethylene fibers, 120-160 parts of water and an impermeability component, wherein the cementing material is prepared from 110 to 180 parts of limestone calcined clay cement, 30 to 70 parts of silica fume and 220 to 300 parts of fly ash. The invention aims to prepare the concrete with high impermeability through the combined action of the LC3 cement, the PE fiber, the waterproof agent, the silane modified polymer, the acrylic copolymer and the polyvinyl formal, the concrete is suitable for the fabricated pavement, and the porosity is reduced and the impermeability of a cement base is improved by preparing the LC3 cement; the PE fibers are adopted, so that high-strength and high-toughness performance is provided; the water reducing agent and the waterproof agent are added, so that the compactness of the concrete material is improved, and the impermeability is improved.

This invention discloses a display device, comprising: a first substrate including a plurality of sub-pixels; a plurality of light-emitting diodes (LEDs) in each of the plurality of sub-pixels disposed on the first substrate; a hydrophobic barrier disposed above the plurality of LEDs and exposed above them; a plurality of color conversion layers disposed on the plurality of LEDs and surrounded by the barrier; an encapsulation layer disposed on the plurality of color conversion layers and formed of an organic material; and a light-shielding layer disposed on the barrier and disposed on the side portion of the encapsulation layer. The area of ​​the encapsulation layer increases downwards, and the area of ​​the light-shielding layer decreases downwards.

The utility model discloses a fiber fabric production device capable of adjusting silica sol concentration, which comprises an immersion pool, a hanging rod, a fiber fabric, a water injection pipe and a glue injection pipe, the top of the immersion pool is provided with the hanging rod, the hanging rod is provided with a hook, the fiber fabric is hung on the hook, the side wall of the immersion pool is fixedly provided with the water injection pipe and the glue injection pipe, and the glue injection pipe is fixedly arranged on the side wall of the immersion pool. An electric control valve is mounted on the glue injection pipe, the glue injection pipe is fixedly connected with a water distribution pipe, the water distribution pipe is fixedly connected with a main pipe, the main pipe is connected with a glue pump, the glue pump is communicated with a glue storage box, and a detection head is fixedly mounted in the immersion pool. Water and silica sol are injected into the immersion pool through the water injection pipe and the silica sol injection pipe, the concentration of the silica sol in the pool is adjusted according to the injection proportion of the water and the silica sol, then the hanging rod on which the fiber fabric is hung is placed at the top end of the immersion pool, the fiber fabric is immersed in the silica sol mixed solution in the pool, and the silica sol mixed solution is gradually attached to the fiber fabric. The surface energy of the fiber is improved, so that the fiber has hydrophobic performance.

The invention relates to the technical field of quenching oil, in particular to high-wettability quenching oil and a preparation method thereof. The high-wettability quenching oil comprises the following substances in parts by weight: 40-60 parts of trimethylolpropane; 8-15 parts of tall oil fatty acid; 0.8 to 1.5 parts of a catalyst; and 45 to 55 parts of xylene. The fatty acid methyl ester synthesized by adopting trimethylolpropane and tall oil fatty acid as raw materials has good fluidity and relatively low viscosity, and is beneficial to improving the heat exchange efficiency between metal and quenching oil, so that the cooling effect is improved. On the basis, the molecular structure of the prepared fatty acid methyl ester comprises a long-chain fatty acid part and a short-chain methanol part. The amphiphilic structure enables the fatty acid methyl ester to show good interfacial activity on a water and oil phase interface, so that the wetting ability of the fatty acid methyl ester to a metal surface is enhanced.

The invention discloses a color-developable waterborne polyurethane dust suppressant and a preparation method thereof, and belongs to the technical field of dust suppressant preparation, the color-developable waterborne polyurethane dust suppressant comprises the following components by weight: 5-20 parts of waterborne polyurethane, 1-10 parts of latex powder, 0.5-5 parts of organic wax, 0.5-5 parts of color paste, 0.5-3 parts of paper pulp, 0.5-3 parts of a thickener, 0.1-0.5 part of an auxiliary agent, 5-10 parts of a film forming auxiliary agent, and 70-90 parts of water. According to the dust suppressant, waterborne polyurethane serves as a film forming substance and can be combined with coal particles to form a film layer of 1 mm-2 mm, a formed cured film is high in strength, good in toughness and high in adhesive force, pulverized coal particles can be effectively isolated, wind and rain erosion can be resisted, the dust suppression period is long, certain hydrophobicity is achieved, the dust suppressant is not prone to being washed away, the service life is greatly prolonged, and the dust suppressant is suitable for being popularized and used. And the dust suppressant takes water as a dispersion medium, the VOC content is extremely low, the selected coloring agent is environment-friendly, no pollution is caused to soil and underground water, and the development direction of green chemistry is met.

The application belongs to the technical field of bio-based packaging materials, and particularly relates to a novel double-layer composite film and application thereof. The novel double-layer composite film comprises the following steps: reacting palmitic anhydride and carboxymethyl cellulose to obtain carboxymethyl cellulose palmitate; adding a pH-sensitive natural dye indicator to obtain carboxymethyl cellulose palmitate nanoemulsion containing a pH-sensitive substance; then loading a natural polymer material to prepare a film material; finally adding the film material to the carboxymethyl cellulose palmitate to prepare a composite film, thereby obtaining the novel double-layer composite film. The double-layer composite film can be self-emulsified without adding a surfactant, and has the ability to load functional indicator (pH-sensitive color indicator) substances; meanwhile, the barrier performance of the film material, such as a chitosan film, to water vapor and oxygen is improved, and the double-layer composite film has a very promising application in food or fruit preservation. The method provided by the application is not only green in raw materials, but also uses a flow casting method, which can be applied to industrial production and has a good application prospect.

The utility model discloses a fast installation oil seal protection structure, which belongs to the motor shaft end waterproof technical field, and comprises an end cover, a bearing and an oil seal are respectively arranged in the end cover, an output shaft penetrates through the bearing and the oil seal, one side of the end cover is provided with an oil seal cover, one end of the output shaft penetrates through the oil seal cover, and the other end of the output shaft penetrates through the oil seal cover. After the oil seal cover is installed, a part of space exists among the oil seal cover, the oil seal and the end cover, lubricating grease is filled in the space, the part of lubricating grease can provide a longer-time lubricating effect for the oil seal, and the lubricating grease has hydrophobicity, so that the lubricating grease can be used for lubricating the oil seal for a longer time. And when the grease is filled in a small gap between the oil seal cover and the output shaft, water can be prevented from entering, so that the problem that the oil seal and the output shaft are continuously rubbed in the operation process of the motor in the prior art, and the damage of the oil seal caused by friction is reduced only by using extremely little lubricating grease at the oil seal is effectively solved.

The invention discloses a light-weight lithium battery diaphragm with high heat resistance and high wettability and a preparation method thereof.The light-weight lithium battery diaphragm with high heat resistance and high wettability comprises a base membrane and a coating on the base membrane, and the coating comprises porous aluminum oxide, carboxymethylated nanocellulose, acetylated nanocellulose, polyurethane, sodium hexametaphosphate and ammonium polyacrylate; the porous aluminum oxide, the carboxymethylated nanocellulose, the acetylated nanocellulose, the polyurethane, the sodium hexametaphosphate and the ammonium polyacrylate cooperate to improve the liquid absorption rate, the liquid retention rate, the peel strength, the ionic conductivity, the heat resistance and the wettability of the diaphragm, and meanwhile, the water content of the diaphragm is reduced. The density of the porous aluminum oxide, the carboxymethylated nanocellulose and the acetylated nanocellulose is relatively low, so that the diaphragm is light in weight.

The application discloses a method for preparing lithium pre-doped amine coordination manganese iron phosphate precursor from lithium manganese iron phosphate, and belongs to the field of battery recycling. The method comprises the following steps: stirring and reacting lithium manganese iron phosphate battery material with a high-valence iron salt solution and a surfactant, and filtering to obtain filtrate and phosphorus iron residue; mixing the filtrate with a phosphate, adjusting the pH of the solution to 2-6, then mixing with an oxidizing agent A, and adding a mixed solution containing an organic amine compound to perform nucleation precipitation reaction, and aging to obtain the lithium pre-doped amine coordination manganese iron phosphate precursor. The application utilizes the surfactant and the high-valence iron salt to efficiently replace divalent iron under acid-free or weak acid conditions, generates a metal solution containing Li + , Fe 2+ , Mn 2+ , performs oxidation to form nucleation precipitation, adds an organic amine compound to control the morphology of the generated particles in the solution, generates the lithium-doped amine coordination manganese iron phosphate precursor, the reaction condition is mild, the energy consumption in the treatment process is low, and the economic utilization value of a manganese byproduct is improved.

A semiconductor structure, a method for forming the semiconductor structure, and an integrated circuit structure are disclosed. The method includes: providing a first substrate on which an electrode structure is formed, wherein the electrode structure is hydrophobic and the first substrate exposed by the electrode structure is hydrophilic; providing a polymer solution for forming a specific structure on the first substrate; providing a second substrate including a first surface and a plurality of spaced-apart walls protruding from the first surface, wherein the top surface of the walls is hydrophilic and the sidewalls and the exposed first surface of the walls are hydrophobic; dropping the polymer solution onto the top surface of the walls and placing the first substrate onto the second substrate to obtain an initial semiconductor structure; wherein the side of the first substrate with the electrode structure faces the second substrate, and the extension direction of the electrode structure is perpendicular to the extension direction of the walls; curing the polymer solution; and removing the second substrate from the initial semiconductor structure to obtain a target semiconductor structure. Embodiments of this disclosure improve device performance.

The invention provides a preparation method of a PLA porous foam material. Comprising the following steps: crushing agricultural straws, extracting lignocellulose in the agricultural straws, and performing acetylation modification on the lignocellulose; the modified lignocellulose is subjected to micro-jet nanometer homogenization, and modified nanometer lignocellulose is obtained; polylactic acid particles and the modified nano lignocellulose are pretreated and then mixed, and mixed master batches are obtained; and extruding and foaming the mixed master batch to obtain the biodegradable PLA porous foam material. According to the invention, agricultural waste resources are fully utilized, so that the problem of treatment of agricultural wastes is solved, and the production cost of the porous foam material is also reduced.

The application discloses a conductive self-repairing Ag / PDMS coating for lunar dust protection and a preparation method and application thereof, and belongs to the technical field of space special functional materials. Epoxy resin A is dissolved in ethyl acetate, multi-walled carbon nanotubes, modified nano-silicon dioxide particles, a silane coupling agent, epoxy resin B and polydimethylsiloxane and a curing agent thereof are sequentially added into the ethyl acetate, and are uniformly mixed, sprayed and obtained, so that the conductive self-repairing Ag / PDMS coating with dustproof performance is obtained. The coating has the characteristics of low cost, no need of additional energy and maintenance, integration of dustproof, conductive and self-repairing functions, and can realize long-term dustproof ability on the lunar surface, can significantly reduce the adhesion of lunar dust on the surface of a spacecraft and a spacesuit, and has a wide application prospect in future manned lunar landing and deep space exploration activities.

The present application relates to the technical field of fracturing aids, and is a temperature-controlled variable-density high-pressure-resistant proppant and a preparation method thereof.The raw materials of the temperature-controlled variable-density high-pressure-resistant proppant include a proppant, a surface modifier, a temperature-controlled polymer, an initiator and an organic solvent.The temperature-controlled variable-density high-pressure-resistant proppant is prepared by first modifying the surface of the proppant to obtain a modified proppant, then grafting and polymerizing the modified proppant with the temperature-controlled polymer, and finally post-treating the final product.The temperature-controlled variable-density high-pressure-resistant proppant can reduce the density under the response of the bottom-hole temperature, so that it is more easily transported to the deep part of a complex fracture network and uniformly laid, has a low breakage rate, can well support the fractures and promote the flow of oil and gas in the fractures.Meanwhile, the temperature-controlled variable-density high-pressure-resistant proppant still has high pressure resistance after swelling, so as to avoid being crushed to reduce the fracture width and block the seepage channel and reduce the fracture conductivity.

The invention discloses a preparation method of high-solid-content and high-flowability sodium ion aqueous positive electrode slurry, which comprises the following steps: S1, preparation of a glue solution: adding a binder into deionized water, and stirring to obtain the glue solution; s2, preparation of a high-fluidity glue solution: adding a first glue solution flow regulator into the glue solution, and stirring at a high speed to obtain the high-fluidity glue solution; s3, preparing a weakly alkaline glue solution, namely adding a second pH flow regulator into the high-flowability glue solution, and stirring to obtain the weakly alkaline glue solution; s4, preparation of a conductive adhesive solution: adding a first conductive agent into the alkalescent adhesive solution, and stirring to obtain the conductive adhesive solution; s5, preparation of first slurry: adding the active substance material into the conductive adhesive solution in batches, stirring and dispersing, and adjusting the viscosity to obtain the first slurry; and S6, preparation of finished slurry: adding the second conductive agent into the first slurry, and stirring and dispersing at a medium-low speed to obtain the final slurry. The invention has the characteristics of good fluidity, high solid content and green and environment-friendly process.

The invention discloses an asymmetric layered porous antibacterial hemostatic sponge dressing as well as a preparation method and application thereof. The method comprises the following steps: pre-crosslinking chitosan and halloysite nanotubes, further crosslinking with keratin, carrying out directional freeze drying on the crosslinked mixed solution to obtain a sponge material, and coating one surface of sponge with a PDMS solution to obtain the asymmetric layered porous antibacterial hemostatic sponge dressing. The layered hemostatic sponge dressing with rapid and effective hemostatic performance, antibacterial activity and biocompatibility is prepared by combining a freeze drying technology and asymmetric design and utilizing feather keratin, halloysite nanotubes (HNTs) and chitosan (CS), and the layered hemostatic sponge dressing has a wide application prospect in the field of wound healing.

This invention belongs to the field of imprinted sensor fabrication and application technology, and discloses a temperature-responsive yeast cell imprinted modified electrode, its fabrication method, and its application. This invention utilizes chronoamperometry and drop casting to modify gold electrodes, obtaining Au / AuNPs / Ti3C2T. x Au / AuNPs modified electrode. Using fluorescently labeled yeast cells as catalyst and template molecules, N-isopropylacrylamide as the temperature-responsive functional monomer and α-methacrylic acid as the auxiliary functional monomer, the electrode surface was modified using the MVL ATRP method. After removing the yeast cells, Au / AuNPs / Ti3C2T electrode was obtained. x / AuNPs / CIPs modified electrode. This modified electrode can be used as an electrochemical sensor for detecting yeast cells. This sensor has advantages such as fast detection speed and high sensitivity, with a linear response range of 1.0 × 10⁻⁶ for detecting yeast cells. 2 ~1.0×10 9 cells / mL.

This invention discloses a moisture-proof PVC wood grain sheet and its preparation method, belonging to the field of PVC wood grain sheet production technology. The moisture-proof PVC wood grain sheet is composed of the following components by weight: 90-100 parts PVC resin, 25-30 parts triethyl acetylacetic acid, 20-25 parts modified moisture-proof microcapsules, 10-15 parts moisture-proof coating liquid, 4-8 parts tricresyl phosphate, 3-5 parts stabilizer, 3-5 parts wood grain color masterbatch, 0.5-1 part calcium stearate, and 0.1-1 part light stabilizer 944. The PVC wood grain sheet prepared by this invention has good mechanical properties and moisture-proof properties.

This invention discloses a NIR-II~III phosphor, its preparation method, and its applications. The phosphor has the chemical formula Ba2La2Zn. 1‑x W2O 12 :xNi 2+ Where x = 0.3~3.0 mol; this phosphor is based on a hexagonal close-packed structure, Ni 2+ Ions occupy octahedral sites in [ZnO6], and through crystal field modulation and impurity energy level design, ultra-wideband emission covering 1200–2000 nm (NIR-II~III) is achieved. During preparation, BaCO3, La2O3, ZnO, WO3, and NiO are weighed according to stoichiometric ratios, and 5 mol% H3BO3 is added as a sintering aid. After grinding and mixing with alcohol and drying, the mixture is sintered at 1623 K for 4 hours in air and then naturally cooled to obtain the target phosphor. This phosphor can be mixed with PDMS at a weight ratio of 3:1 and cured at 353 K for 2 hours to form a flexible transparent film. This film is then coupled with a 330 nm ultraviolet continuous laser for excitation to produce NIR-III emission. The phosphor of this invention can be applied to night vision imaging, long-distance parking lot security monitoring, and anti-counterfeiting information encryption identification based on the absorption differences of different inks, possessing advantages such as wide emission spectrum, simple preparation process, and flexible application.

The present application relates to a kind of perovskite precursor solution stability protection method, belong to perovskite photovoltaic technical field, solve the problem that perovskite precursor solution is easily affected by light, oxygen and water vapor and occurs degradation deterioration in the process of opening bottle use.The method of the present application is: perovskite precursor solution is stored in liquid storage container, perovskite precursor solution surface is covered with a layer of liquid protective layer formed by liquid protective agent;The absorbance A of liquid protective layer in 300~550 nm wave band is greater than or equal to 3.The present application forms threefold protection of light shielding, oxygen isolation and water vapor barrier through liquid protective layer, can continuously provide interface protection in the process of opening bottle and static storage, effectively improve the stability of perovskite precursor solution.

The application discloses a broad-spectrum antibacterial peptide ESA_3 from Enterococcus faecalis and application thereof, the antibacterial peptide is composed of 15 amino acids and can be efficiently synthesized through an Fmoc solid-phase chemical method. The ESA_3 has significant bacteriostatic activity on various gram-positive and gram-negative bacteria such as Staphylococcus aureus ATCC 6538, methicillin-resistant Staphylococcus aureus USA300, Escherichia coli and Pseudomonas aeruginosa, and the inhibiting effect of the ESA_3 on the methicillin-resistant Staphylococcus aureus USA300 is better than that of human antibacterial peptide LL-37. Safety evaluation shows that the hemolysis rate of the ESA_3 is less than 5% under an effective antibacterial concentration, the survival rate of mammalian cells is kept above 80%, and the biological safety is excellent. In addition, the bacteriostatic activity of the peptide on the Staphylococcus aureus remains stable under a medium-low salt concentration. The antibacterial peptide can be widely applied to the preparation of drugs for resisting drug-resistant bacterial infection, antibacterial coatings of medical consumables, disinfectants, food preservatives and feed additives, and has a wide development prospect.

The invention relates to the field of ceramic materials, in particular to a preparation method of a high-thermal-conductivity aluminum nitride tape-casting green body and a ceramic chip thereof, and the high-thermal-conductivity aluminum nitride tape-casting green body is prepared from the following raw materials in parts by weight: 100 parts of aluminum nitride powder, 1.5-3.5 parts of a dispersing agent, 8-12 parts of a binder, 3-6 parts of a plasticizer, 1-5 parts of a sintering aid and 80-100 parts of water. According to the invention, due to the low hydrolytic property of the slurry, the uniform distribution of the sintering aid and the optimized sintering schedule, the thermal conductivity of the obtained ceramic wafer is stabilized at 200W / (m.K) or above, the ceramic wafer has a uniform and compact microstructure, the bending strength can reach 450MPa or above, and the requirement of high-end application on mechanical reliability is met.

The application discloses an etching process of screen cloth for silk screen printing, and relates to the technical field of silk screen printing.The etching process of screen cloth for silk screen printing comprises the following steps: S1, taking a silk screen and a screen frame according to printing requirements, cleaning, drying, tightly fixing the cleaned silk screen on the screen frame, and adjusting the tension to 20N-25N; S2, uniformly coating a photosensitive glue on the surface of the silk screen, drying, and obtaining a photosensitive film; S3, preparing a positive film according to printing requirements, combining the positive film with the photosensitive film, exposing under iodine gallium lamp light, then soaking in water, cleaning, and drying to obtain a developed screen printing plate; S4, checking the developed screen printing plate, repairing the missing part, and drying after repairing; and S5, smearing a curing agent on the surface of the repaired screen printing plate, curing, and obtaining the screen cloth.The photosensitive glue prepared by the application has good thermal stability and developing effect, and the prepared screen cloth has higher resolution.

This invention discloses a rust-preventing and bonding friction material for automobiles and its preparation method. The raw materials include: 5-20% phenolic resin, 20-40% reinforcing fiber, 25-45% friction filler, and 15-30% functional filler; the functional filler is zinc hexadecyl phosphate modified nano-silica. Zinc hexadecyl phosphate is added to anhydrous ethanol and heated in a water bath to obtain a ZHP dispersion. The dried nano-silica is added to anhydrous ethanol, heated in a water bath with stirring, and then the ZHP dispersion is added dropwise while stirring. After the addition is complete, the mixture is kept at a constant temperature and refluxed for reaction. After the reaction is complete, the solid product is separated, washed with anhydrous ethanol, and vacuum dried to obtain zinc hexadecyl phosphate modified nano-silica. This invention provides a simple friction material formulation, uses few raw materials, and has a simple preparation method, which can effectively reduce the cost of friction materials and improve their wear resistance, prevent rust adhesion, and extend the service life of braking devices.

The invention discloses a water-based inorganic coating for a concrete structure and a preparation method of the water-based inorganic coating. On one hand, the invention provides the water-based inorganic coating for the concrete structure, and the water-based inorganic coating comprises a component A and a component B, the component A is prepared from the following components in parts by weight: 20 to 30 parts of modified water glass, 8 to 12 parts of fine filler, 6 to 10 parts of superfine filler, 0.5 to 1 part of fluosilicate, 50 to 60 parts of Portland cement, 2 to 4 parts of retarding type water reducing agent and 25 to 35 parts of water; the component B is prepared from the following components in parts by weight: 30 to 40 parts of polybutadiene type silane terminated polyurethane prepolymer, 50 to 60 parts of Portland cement, 18 to 24 parts of nano titanium dioxide, 1 to 1.5 parts of polycarboxylic acid type water reducing agent and 35 to 45 parts of water. On the other hand, the invention further provides a preparation method of the water-based inorganic coating for the concrete structure. The waterproof and anti-seepage mortar has excellent deep permeable crystallization performance, and is relatively high in waterproof performance and anti-seepage performance.

The utility model belongs to the road roller technical field, relates to a road roller convenient to adjust the steering angle range, including drive body, the drive body outside is provided with former road roller, former road roller outside top is provided with water tank subassembly, the utility model discloses the use of connecting assembly makes former road roller when carrying out compaction operation to work area, when facing narrow curve, ditch edge or large -scale barrier, the staff can adjust the angle of former road roller through the telescoping of hydraulic adjusting rod control, so that former road roller can as far as possible close to barrier or ditch edge, has reduced the interstice between former road roller and barrier, has reduced the work intensity that the subsequent staff carries out the processing to the uncompacted area, has further improved the practicality and reliability of device, in cooperation with the position of the cooperation groove of water tank outside and water tank, so that former road roller is more convenient when using, has increased the practicality of device.