2753 results about "Latex rubber" patented technology

The invention discloses a high-performance green and environment-friendly single-component polymer cement waterproof dry blend and a preparation method thereof, and relates to the technical field of building materials, the high-performance green and environment-friendly single-component polymer cement waterproof dry blend comprises the following components: an inorganic cementing material, latex powder, graded quartz sand, a functional filler, cellulose ether, an organic silicon defoamer, a polycarboxylic acid water reducer and compound fibers; the functional filler is modified waste glass powder prepared through mechanical activation and silanization modification; the compound fiber is a mixture of modified glass fiber and modified polypropylene fiber; the preparation of the modified glass fiber comprises tannic acid and polyethyleneimine combined modification and graphene oxide modification, and the preparation of the modified polypropylene fiber comprises plasma activation. The polymer cement waterproof dry blend prepared by the method adopts the glass powder to replace natural mineral filler, is energy-saving and environment-friendly, and the cement matrix is modified by various fibers, so that the prepared polymer cement dry blend is excellent in comprehensive performance.

The invention discloses reactive compatible ACR-PHA core-shell latex and application thereof, and belongs to the field of polymer chemistry and material science. The latex comprises composite particles with core-shell, gradient core-shell, raspberry-shaped or Janus heterostructure, interfaces of ACR phase and PHA phase of the latex are connected through covalent bonds, and the compatibility problem of physical blending is fundamentally solved. The latex particles have a Z-average particle size of 80-400 nm, a PDI of less than or equal to 0.30, and a minimum film formation temperature (MFFT) of-10 to 12 DEG C. The coating prepared by the invention has excellent high-humidity barrier stability (WVTR is less than or equal to 65g / m.d), low-temperature rapid heat sealability, water resistance, oil resistance and complete recoverability, does not contain PFAS, is an ideal alternative scheme of a traditional PE (Polyethylene) spraying film, and is suitable for the fields of food packaging paper, paper cups, bowls and the like.

The invention provides a modified coal gangue-based large-flow-state grouting and water plugging material and a preparation method thereof. Comprising 80-90 parts of a coal gangue sample, 1-5 parts of Portland cement, 1-5 parts of sulphoaluminate cement, 0.51-3 parts of a polycarboxylic acid water reducing agent, 1-4 parts of cellulose ether with the viscosity of 200w, 0.1-5 parts of a calcium oxide expanding agent, 0.5-5 parts of a plastic expanding agent, 0.5-1 part of redispersible latex powder, 0.5-5 parts of polyacrylamide with the molecular weight of 1000 and water, and the water-material ratio is 0.4. According to the modified coal gangue-based large-flow-state grouting and water plugging material and the preparation method thereof, the cement consumption can be remarkably reduced, the cost is reduced, the utilization rate of solid wastes (such as coal gangue) is increased, and the material has good flow-state performance and adjustable setting time; the method is suitable for deep and large shaft surrounding rock water seepage treatment in coal mining and other mine engineering.

The invention belongs to the field of building decoration materials, and discloses a GRG gypsum composite reinforced material and a preparation method thereof. The high-strength concrete is prepared from the following components in parts by weight: 45 to 65 parts of alpha-semi-hydrated gypsum, 12 to 20 parts of composite reinforced fiber, 0.5 to 2 parts of graphene nanofiber, 2 to 5 parts of nano silica fume, 5 to 10 parts of ethylene-vinyl acetate copolymer latex powder, 1 to 2.5 parts of hydroxypropyl methyl cellulose, 0.1 to 0.8 part of polycarboxylic acid type water reducing agent, 1 to 4 parts of calcium stearate, 3 to 8 parts of vermiculite powder and 28 to 40 parts of deionized water. Aiming at the problems that an existing GRG material is insufficient in mechanical property, low in fireproof grade, poor in thermal performance, poor in durability and the like, a multi-dimensional synergistic enhancement system is constructed by adopting composite reinforced fibers, functional nanofiller and a gradient preparation process, the problems of dispersion and interfacial compatibility of the nanofiller are solved, and the comprehensive performance of the GRG material is improved. The performance breakthrough of high strength, high fire resistance, low heat conduction and long durability is realized.

The invention relates to the technical field of building materials, in particular to impermeable waterproof dry-mixed mortar and a preparation method thereof. The impervious waterproof dry-mixed mortar is prepared from the following raw materials in parts by weight: 1400 to 1550 parts of machine-made sand, 380 to 420 parts of Portland cement, 60 to 80 parts of fly ash, 30 to 50 parts of expanded perlite, 10 to 20 parts of latex powder, 7 to 10 parts of sepiolite powder, 5 to 10 parts of nano wollastonite powder, 2 to 4 parts of hydroxyethyl methyl cellulose, 2 to 5 parts of sodium citrate, 10 to 20 parts of fiber reinforcing agent, 3 to 5 parts of impervious agent, 6 to 10 parts of waterproof agent, 2 to 4 parts of expanding agent and 3 to 6 parts of water reducing agent. The dry-mixed mortar prepared by the invention not only has excellent mechanical properties, but also has good impermeability and waterproof performance, and the service life of the dry-mixed mortar is prolonged to a certain extent while the quality of the dry-mixed mortar is effectively guaranteed.

Multi-ply tissue products, particularly tissue products prepared from two or more wet pressed tissue plies that have been recreped using a print-crepe process that deposits a latex polymer on at least one of the outer surfaces of each tissue ply. The tissue products have improved strength and softness, such as a geometric mean tensile strength (GMT) greater than about 1,400 g / 3″, a geometric mean tensile energy absorption (GM TEA) of about 20 g·cm / cm2 or greater and a TS7 value less than about 16.0. In certain instances, the tissue products also have a low degree of stiffness and a relatively smooth surface, such as a Stiffness Index less than about 8.00 and a TS750 value less than about 20.0.

The present invention provides a glue dipping machine, and relates to the technical field of glue dipping machines. The glue dipping machine comprises a machine body, a glue spraying side frame is fixedly connected to the left side of the machine body, a reciprocating glue spraying machine is arranged on the upper part of the glue spraying side frame, and a conveying device is arranged inside the glue spraying side frame; a third spiral lifter is arranged on the upper surface of the machine body and located on the left side, a feed roller is arranged at the output end of the third spiral lifter, and an auxiliary roller is arranged inside the machine body and located on the left side. The latex and silicone are fully mixed by the reciprocating glue spraying machine, and then the reciprocating glue spraying is performed, and then the latex and silicone can be fully entered through the extrusion of the feed roller and the auxiliary roller, so that the processed finished product can be exposed to the sun and boiled in water, and the service life is longer, and there is no need to provide a vacuum environment. After processing, the fiber layer contains more glue. After dipping, the excess glue is squeezed twice to reduce the waste of glue, and the final finished product has a better bonding effect.

Provided is a wet masterbatch production method capable of producing a wet masterbatch which exhibits excellent dispersion properties with respect to fillers containing recovered carbon black and thus contributes to improving sustainability. Specifically provided is a wet masterbatch production method characterized by comprising: a slurry preparation step for preparing a slurry solution by dispersing a filler containing recovered carbon black in water; a mixing step for mixing the slurry solution and a rubber latex solution; and a stirring step for stirring the slurry solution and the rubber latex solution subsequent to the mixing step in a liquid phase.

The invention belongs to the technical field of fireproof materials, and particularly relates to a non-intumescent fireproof coating for a fiber reinforced composite material as well as a preparation method and application of the non-intumescent fireproof coating. A binder in preparation raw materials of the non-intumescent fire retardant coating comprises metakaolin, fly ash, CA80 high-alumina cement and an exciting agent, or comprises metakaolin, fly ash, CA80 high-alumina cement, an exciting agent and an organic matter binder, the organic matter binder comprises redispersible latex powder and / or polyvinyl alcohol powder, and the organic matter binder comprises silica powder and / or silica powder. The heat insulation filler comprises expanded vermiculite, hydrophobic modified expanded perlite, sepiolite and hollow glass beads, the flame retardant comprises aluminum hydroxide and magnesium hydroxide, the fibers comprise glass fibers, and the auxiliaries comprise a foaming agent, a thickening agent, a foam stabilizer and an acrylic emulsion. The formed coating has the advantages of low carbon, low cost, excellent heat insulation performance and high-temperature strength, can be applied as a fire retardant coating of a fiber reinforced plastic (FRP), and can effectively protect an FRP reinforcing system.

The invention discloses latex skeleton aerobic granular sludge and a preparation method thereof, and belongs to the technical field of sewage treatment. The aerobic granular sludge takes a porous natural latex carrier as a core skeleton, anaerobic sludge is fixed on the carrier, and after being mixed and wrapped with a sodium alginate solution, the mixture is dropwise added into a calcium chloride solution to be cured to form gel particles. The preparation method comprises the following steps: crushing the natural latex, screening to obtain particles with the particle size of 0.4-1.2 mm, and soaking the particles in alkali liquor with the pH value of 10-12; the method comprises the following steps: centrifugally concentrating anaerobic sludge to 10000 to 20000 mg / L; mixing the treated latex carrier, anaerobic sludge and a 1%-5% sodium alginate solution according to a volume ratio of 5: (2-5): (2-5); dropwise adding the mixture into a calcium chloride solution with the concentration of 3-7%, and curing to form gel particles; and putting the gel particles into a sewage treatment aerobic tank, injecting domestic sewage, and carrying out aeration domestication for 3-6 days until the particles become earthy yellow. The granular sludge prepared by the invention has the advantages of stable structure, good settling performance and high pollutant removal efficiency.

The present invention relates to a flexible iron aluminate cement-based supercapacitor and a preparation method thereof. The flexible iron aluminate cement-based supercapacitor is assembled with rGO / Ni as the positive electrode, rGO@α-Fe2O3 spindle / Ni as the negative electrode, and polyacrylamide-cement-emulsion-latex powder-water-KOH as the flexible cement-based solid electrolyte. Compared with the prior art, the flexible energy storage cement-based material, as a new type of building material integrating structure / function, realizes the integration of flexible lightweight design and functional technology. Its flexible characteristics can closely fit complex-shaped buildings and have good adaptability to special-shaped curved building structures. At the same time, a non-destructive construction process can also be adopted, and the energy storage function can be imparted to the existing structure by an external pasting method, so that the energy storage function can be imparted without structural reconstruction.

The invention provides a binder for a ceramic coating diaphragm, a preparation method of the binder, the ceramic coating diaphragm and a battery in order to solve the problems that a water-based binder used by an existing ceramic coating diaphragm is poor in thermal stability and the diaphragm is curled in a low-humidity environment. The binder comprises latex particles, the latex particles comprise a core-layer polymer and a shell-layer polymer, the shell-layer polymer is arranged on the outer surface of the core-layer polymer, the raw material of the core-layer polymer comprises a first polymeric monomer, and the raw material of the shell-layer polymer comprises a second polymeric monomer and a third polymeric monomer, the second polymeric monomer includes a polymerizable monomer containing an oxazoline group. The adhesive provided by the invention is mixed with a ceramic material to prepare ceramic slurry, the ceramic slurry is coated on the surface of a base membrane to obtain a ceramic coated diaphragm, the ceramic diaphragm can resist thermal shrinkage of 150 DEG C, the transverse thermal shrinkage and the longitudinal thermal shrinkage of the ceramic diaphragm are controlled within 3%, and the diaphragm is high in peel strength, low in humidity and free of curling.

The invention relates to the technical field of natural rubber latex collection, in particular to an automatic latex collecting device which comprises a latex collecting assembly and a latex collecting assembly. The latex collecting assembly comprises a latex cup and a support structure, and the support structure is connected with the latex cup and supports the latex cup to a set height; the latex collecting assembly comprises a latex collecting container, a moving structure and a clamping jaw structure, and the moving structure is connected with the clamping jaw structure; the clamping jaw structure is used for clamping or placing a rubber cup, and the moving structure is used for driving the clamping jaw structure to move between the position of the rubber cup and the position of the latex collecting container and turning over the rubber cup to a set angle so that latex collected in the rubber cup can be poured into the latex collecting container. According to the technical scheme, latex is collected in a mechanical mode, the structure is simple, stable and reliable, latex waste is reduced, meanwhile, the latex collecting efficiency is effectively improved, and the labor intensity of latex workers and the latex collecting cost are reduced.

The invention relates to the technical field of coating compositions, and particularly discloses an ardealite-based heat-insulation fireproof coating and a preparation method thereof.The ardealite-based heat-insulation fireproof coating is prepared from titanium dioxide modified ardealite, hollow glass beads, styrene-acrylic emulsion, modified composite flame-retardant fibers, calcium sulfate whiskers, microencapsulated red phosphorus, redispersible latex powder, deionized water, a dispersing agent and a defoaming agent; the preparation method comprises the following steps: firstly, preparing titanium dioxide modified phosphogypsum, secondly, modifying the composite flame-retardant fiber, and finally, mixing and stirring all the components. Through the synergistic effect of the titanium dioxide modified phosphogypsum and the composite flame-retardant fiber and in combination with an ultrasonic-assisted preparation process, a double heat-insulating barrier and a synergistic flame-retardant mechanism is formed; and calcium sulfate whiskers are matched for toughening, so that the fireproof heat-insulating performance and the structural stability of the coating are improved, and the problem that the coating is easy to crack is solved.

The invention belongs to the technical field of cement pole materials, and particularly relates to a high-strength cement pole material and a preparation method thereof. The high-strength cement pole material is prepared from the following components in parts by weight: 450 to 500 parts of cement, 60 to 80 parts of fly ash, 500 to 550 parts of fine aggregate, 800 to 1000 parts of coarse aggregate, 80 to 120 parts of slag powder, 30 to 50 parts of composite fiber, 5 to 10 parts of redispersible latex powder, 2 to 6 parts of water reducing agent and 100 to 150 parts of water, the composite fibers comprise modified basalt fibers and polypropylene reticular fibers. According to the high-strength cement pole material provided by the invention, the polypropylene reticular fibers and the specific modified basalt fibers act together, so that the cement pole material has high compressive strength and high breaking strength, and a cement pole prepared from the cement pole material has high flexural capacity.

The invention belongs to the technical field of concrete preparation, and particularly relates to a preparation method of a large-mixing-amount concrete composite admixture with solid waste residues as raw materials. The large-dosage concrete composite admixture provided by the invention comprises the following raw materials: phosphogypsum subjected to activation and modification treatment, lithium slag powder subjected to calcination and fine grinding treatment, silica fume, redispersible latex powder, quartz powder and sodium silicate, and the raw materials are added into concrete to serve as cement replacement components. And the compressive strength, static elastic modulus, impermeability, freezing resistance and other properties of the concrete are not influenced.

The invention provides ground self-leveling mortar based on copper tailing waste residues and a preparation method thereof, and the ground self-leveling mortar comprises the following components: 50 to 150 parts of 0 to 0.045 mm quartz stone powder, 50 to 150 parts of 0 to 0.075 mm copper tailing waste residue powder, 40 to 60 parts of 0.075 to 0.15 mm copper tailing waste residue, 150 to 200 parts of 0.15 to 0.3 mm copper tailing waste residue, 30 to 60 parts of 0.3 to 0.6 mm copper tailing waste residue, 180 to 220 parts of 0.3 to 0.6 mm quartz sand, 230 to 270 parts of P.O42.5 cement, 80 to 120 parts of sulphoaluminate cement and 20 to 40 parts of anhydrite. The concrete is prepared from the following components in parts by weight: 0.8-0.9 part of tartaric acid, 6-8 parts of redispersible latex powder, 0.6-0.8 part of cellulose ether, 0.8-1.0 part of a water reducing agent and 200-240 parts of water. According to the method, the residual tailing waste residues obtained after valuable minerals are recycled from the copper tailings are utilized, the copper tailing waste residues with different grain sizes can be blended to meet the use performance requirements of different ground self-leveling mortar, the process is simple, the production cost is low, all-component resource utilization of the copper tailing waste residues can be achieved, the application range is wide, consumption of natural gravel is reduced, and the production cost is reduced. High-added-value utilization of the copper tailing waste residue powder is achieved, the treatment problem of the copper tailing waste residues is effectively solved, and the environmental and economic benefits are remarkable.

The invention relates to the technical field of building materials, and discloses fire-resistant decoration waste exterior wall external thermal insulation mortar and a preparation method thereof. The fire-resistant decoration waste exterior wall external thermal insulation mortar comprises the following raw material components in parts by weight: 60-410 parts of cement; 120 to 550 parts of decoration waste recycled aggregate; 36 to 75 parts of SiO2 aerogel; 8 to 17 parts of a silane coupling agent; 1.3 to 2.1 parts of dispersible latex powder; 0.5 to 1.0 part of methyl cellulose; 7-15 parts of a water reducing agent; 0.2 to 0.4 part of an air entraining agent; and 120 to 180 parts of water. According to the invention, the low-cost and high-strength decoration waste recycled aggregate is used for partially replacing expensive and low-strength aerogel, so that the thermal insulation performance of the mortar is ensured, and the material cost is greatly reduced; the decoration garbage exterior wall external thermal insulation mortar can resist high-intensity fire disasters with the highest temperature of 1000 DEG C and the fire receiving time of 2.5 h, and can be applied to exterior wall external thermal insulation systems of high-rise and super high-rise buildings with high fire extinguishing difficulty.

The invention relates to the technical field of mortar, in particular to waterproof and acid-resistant mortar for municipal pipeline repair. 1000 parts by weight of the mortar comprise the following raw materials in parts by weight: 250-500 parts of a cementing material, 20-60 parts of an admixture, 1-5 parts of a water reducing agent, 30-100 parts of quartz powder, 10-40 parts of latex powder, 1-5 parts of a water repellent, 1-5 parts of fibers, 0.1-1 part of cellulose ether, 1-15 parts of a magnesium additive, 0.1-0.8 part of an early strength agent, 1-5 parts of a defoaming agent, 2-8 parts of a thixotropic lubricant, 0.5-3 parts of a retarder and the balance of aggregate. According to the invention, two cementing materials of a mixture of aluminate cement and sulfate-resistant portland cement are adopted, an admixture is doped, hydrophobic additives of a water reducing agent and latex powder are added, aggregate and the like are matched, and magnesium additives such as magnesium oxide and magnesium hydroxide are added, so that weak acid in sewage can be consumed through reaction, and calcium silicate crystals in the mortar are prevented from being corroded by the weak acid at the same time; acid etching resistance protection is formed; the device can be used for plane and vertical face maintenance in municipal sewage pipeline maintenance, and is good in construction state and excellent in performance.

The invention provides a ceramic tile back surface charged bead effect scavenger and a preparation method thereof, and belongs to the technical field of building materials. The scavenging agent comprises the following components in percentage by mass: 0.5-5% of a silane coupling agent, 2-10% of acrylate-vinyl versatate copolymer latex powder, 1-8% of silicon dioxide nanoparticles, 8-20% of an alkaline component, 3-10% of a bio-based surfactant, 1-5% of lipase, 8-20% of an adsorbent and 40-70% of a filler. The remover can effectively remove the bead effect on the back of the ceramic tile, improve the adhesive property of the ceramic tile, improve the durability, especially the adhesive property of the ceramic tile after water immersion and thermal aging, reduce the hollowing phenomenon and prolong the service life of the ceramic tile; the scavenger has the advantages of low formula cost, easily available raw materials, low toxicity, environmental protection, simple and fast use method, improvement of construction efficiency and construction quality, easy operation, cost saving, and enhancement of safety and environmental protection.

The invention discloses a highly permeable lawn and a preparation method thereof, the highly permeable lawn comprises artificial grass yarns, gum and a base layer, the artificial grass yarns are woven on the base layer, the gum is arranged on the bottom surface of the base layer, the artificial grass yarns and the base layer are fixed, the gum comprises latex, a calcium carbonate filler, a foaming agent and a cross-linking agent, the glass transition temperature Tg of the latex is 10-40 DEG C, the foaming agent is a foaming agent, and the cross-linking agent is a cross-linking agent. The latex comprises carboxylic butadiene-styrene latex and ethylene-vinyl acetate copolymer latex; the latex comprises the following components in parts by mass: 60-90 parts of carboxylic butadiene-styrene latex and 10-40 parts of ethylene-vinyl acetate copolymer latex. The base layer in the artificial turf is improved, the porous breathable gum is prepared, it is ensured that the mechanical property of the artificial turf meets the requirement, and the high water permeability of the artificial turf is achieved under the condition that drainage holes are not punched.

The present invention relates to the field of coated abrasive technology, specifically to anti-clogging ceramic sandpaper and its preparation method. The technical key features are as follows: from bottom to top, it comprises: latex paper, a base glue, abrasive, a double glue, and an anti-clogging coating. The anti-clogging coating is prepared from the following components, calculated by weight: 30-50 parts aqueous emulsion, 10-15 parts graded filler, 3-5 parts dispersant, 2-3 parts water-soluble curing agent, and 60-70 parts water. The graded filler is ceramic corundum particles with the following gradation: particle size R < 250nm, 1-3%; 250≤R < 350nm, 65-75%; 350nm≤R < 450nm, 15-19%; 450≤R < 550nm, 3-5%. The anti-clogging ceramic sandpaper and its preparation method provided by the present invention significantly enhance the anti-clogging effect of the anti-clogging coating while effectively improving the sharpness and self-sharpening properties of the sandpaper surface.

An elastomeric glove includes a superimposed texture provided on a surface of the elastomeric glove, including front and back of a palm region, a thumb region and fingers region, and the superimposed texture includes multiple units of a stellate convex polygon distributed on the surface of the elastomeric glove, with a tip at the center and folded at intersects of the polygon for gripping, diverting and channeling fluid away from the surface of the elastomeric glove. A synthetic latex formulation for producing the elastomeric glove is also disclosed.

The invention discloses a double-liquid magnesium phosphate early-strength high-strength grouting material and a preparation method thereof.The grouting material is composed of a liquid A and a liquid B. The liquid A is composed of powder A and water in parts by weight and comprises dead burned magnesia powder, a defoaming agent, steel slag powder, a retarder I and water, and the liquid B is composed of powder B and water in parts by weight and comprises powder B and water in parts by weight. Wherein the monopotassium phosphate, the superfine powder, the polymer rubber powder, the retarder II and the water have the advantages that the stirring time is shortened, the setting time is controllable, the flowability is good, the repair requirement can be met more quickly, the construction period is shortened, and the cane sugar and the borax are used as the retarders, so that the setting time can be controlled, and the early strength can be improved; surplus phosphate in a grouting material matrix is consumed by using the steel slag powder, so that some amorphous gel products can be generated, and the mechanical property is improved; the redispersible latex powder is utilized to form a polymer film in the slurry to wrap a hydration product, so that the water resistance is improved, and the synergistic modification effect is achieved.

The utility model discloses an electric connector assembly, which relates to the field of electric connectors, and comprises a first electric connector and a second electric connector, one end of the first electric connector corresponding to the second electric connector is rotatably provided with a shielding connecting shell, and the outer side of the shielding connecting shell is provided with a plurality of rectangular grooves. A latex sponge block is fixedly arranged on the inner wall of the rectangular groove, two guide plates are fixedly arranged on each of the two sides of the inner wall of the rectangular groove, the latex sponge block is located between the two guide plates, and a connecting ring is fixedly arranged at the end, corresponding to the first electric connector, of the second electric connector. According to the utility model, through the arrangement of the latex sponge block on the shielding connecting shell, the latex sponge block is expanded, so that the sponge hole of the latex sponge block is expanded, the water absorption area of the sponge is increased, the rectangular groove is blocked by the latex sponge block, ventilation and heat dissipation can be ensured, and the heat dissipation effect is improved while most humidity can be isolated.

A preparation method of a glove having a soft coating with high wear resistance and high anti-slip performance is provided, including: physically spraying a bio-based organic polymer material on a surface of a glove core coated with an impregnation latex, conducting pre-vulcanization and high-temperature vulcanization successively, washing with an alkali liquor, an acid liquor, and water successively, and oven-drying to obtain the glove having the soft coating with high wear resistance and high anti-slip performance. The present disclosure has the following advantages: The preparation method is simple and reliable, and can greatly increase anti-slip performance and wear resistance of a coating while providing a delicate sand surface effect for the coating. The glove of the present disclosure has excellent anti-slip performance, durability, and comfortability in oily environments and dry environments.

The invention discloses a marine concrete underwater engineering geopolymer repairing material. The repairing material is prepared from the following raw materials in parts by weight: 10-15 parts of a composite alkali activator, 30-40 parts of granulated blast furnace slag powder, 20-25 parts of fly ash, 10-15 parts of cement, 1-2 parts of silica fume, 1-2 parts of wollastonite, 0.1-0.3 part of a flocculating agent, 0.2-0.5 part of a water reducing agent, 2-5 parts of an expanding agent, 0.1-0.3 part of a thickening time control agent, 3-5 parts of latex powder and 5-10 parts of water. The marine concrete underwater engineering geopolymer repairing material has the characteristics of self-leveling, self-compacting, vibration-free, high early strength, good dispersion resistance, strong binding power with an original cement concrete base material, capability of realizing self-falling construction in water and moderate price, and can better meet the performance requirements of underwater repairing of marine concrete structures.

The invention discloses a surrounding type self-adaptive moving electric control rubber tapping device which comprises a surrounding type assembly used for surrounding a rubber tree in the radial direction. A circumferential guide rail is arranged on the outer side of the surrounding type assembly; the self-adaptive rolling wheel assembly is arranged on the inner side of the surrounding type assembly and used for transversely or vertically moving the device; the fixed clamping jaw assembly is slidably arranged on the guide rail through a guide rail connecting piece and used for fixing the device to the rubber tree. The electric control rubber tapping knife assembly is installed on the surrounding type assembly and used for cutting the surface of the rubber tree. The laser positioning module is used for positioning the position of the device; the control module is used for controlling operation of the device. The device can adapt to rubber trunks of different sizes, a stable and uniform spiral rubber cutting path is formed on the surface of bark, and the latex collecting effect is improved.

The invention discloses a high-strength self-leveling floor material and application thereof, and the high-strength self-leveling floor material comprises the following components: 300-400 parts by weight of cement; 30 to 50 parts by weight of limestone powder; 5 to 10 parts by weight of silica fume; 3 to 6 parts by weight of bentonite; 0.1 to 0.5 part by weight of polyvinyl alcohol; 5 to 8 parts by weight of redispersible latex powder; 0.1 to 0.3 part by weight of an air entraining agent; 0.5 to 2 parts by weight of a plasticizer; 0.5 to 1 part by weight of hydroxyethyl cellulose; and 1-2 parts by weight of a stabilizer. The high-strength self-leveling floor material with high fluidity, small size change rate and high compressive strength can be obtained by utilizing component selection of the composition, the weight ratio of the components and the synergistic relationship among the components, and self-leveling floor construction is utilized.

The utility model discloses a high-elasticity latex sponge mat which comprises an upper sponge mat body, a plurality of upper holes are formed between the two ends of the upper sponge mat body in a penetrating mode, a lower sponge mat body is arranged at the bottom of the upper sponge mat body, a plurality of lower holes are formed between the two sides of the lower sponge mat body in a penetrating mode, and silica gel blocks are filled in the upper holes and the lower holes. The top of the upper sponge mat is fixedly connected with an upper latex sponge base mat, the bottom of the lower sponge mat is fixedly connected with a lower latex sponge base mat, the upper surface of the upper latex sponge base mat and the lower surface of the lower latex sponge base mat are both provided with a plurality of anti-slip strips, and the silica gel block is provided with a plurality of vent holes. The compression space of the upper sponge mat and the lower sponge mat can be provided through the upper hole and the lower hole, and therefore the elasticity of the upper sponge mat and the elasticity of the lower sponge mat are improved.