1206results about How to "Improve water stability" patented technology

The present invention is a niobium nitride which has a composition represented by the composition formula Nb₃N₅ and in which a constituent element Nb has a valence of substantially +5. The method for producing the niobium nitride of the present invention includes the step of nitriding an organic niobium compound by reacting the organic niobium compound with a nitrogen compound gas.

The invention relates to a method for finishing bacterium fixation by utilizing polyvinyl alcohol-borate secondary crosslinking, belonging to the field of water treatment. The method comprises the steps of: after mixing polyvinyl alcohol and bacteria in proportion, putting the mixture into saturated borate solution and carrying out first crosslinking fixation, after the fixation, taking out supernate and regulating pH of the supernate, carrying out second crosslinking fixation on the polyvinyl alcohol by utilizing the supernate in which the pH is regulated, and cleaning the polyvinyl alcohol after the fixation, so as to finish the whole fixation process. The method has the advantages that the damage to the bacteria in the fixation process is greatly reduced, and the phenomena of adhesion, water solubility and expansion are effectively reduced as well, thus providing conditions for large-scale industrial application of biologic active fillers and biologic active filter materials based on the polyvinyl alcohol.

The present invention is directed to an adhesive composition, which comprises an epoxy resin, a coupling agent, filler, and an effective amount of an amine-curing agent or curative for said epoxy resin. Advantageously, tri-functional and/or tetrafunctional epoxy resins and/or acrylate monomers will be incorporated into the adhesive composition in order to reduce open time and enhance substrate adhesion. Advantageously, a mixture of amines will be used in the curative including aliphatic amines, which have low viscosities and efficiently wet the substrate for enhancing adhesion; polyamines, which can be used to manipulate open time and allow for improved ratio tolerance of the adhesive system; and amine-terminated rubbers (ATBN), which can improve impact resistance and the toughness of the cured adhesive. Preferred coupling agents are silanes.

This application describes garments (2), for example swim suits or other sports or athletic garments, in which a plurality of panels (10-22&30-44) are laminated on the outer surface of a base layer (4) of stretchable elasticated fabric to offer (in the case of a swim suit) improved performance for competitive swimmers through a reduction in surface drag, a reduction in form drag and/or improved stability in the water.

The invention relates to an active powder soil solidifying agent as well as a preparation method and application thereof. The active powder soil solidifying agent comprises the following components in percentage by weight: 4%-8% of binding materials, 76%-89% of aluminosilicate materials, 4%-12% of active materials and 3%-7% of exciting agents. The active powder soil solidifying agent disclosed by the invention is reasonable in component proportion, obtains the raw materials locally, is convenient, advisable, simple in production process, low in energy consumption, low in cost, wide in trial range on different soil, high in solidifying strength and stable in solidified soil layer property; the prepared soil solidifying agent is applied to a site construction process, simple and easy to operate; compared with the traditional construction process, the prepared soil solidifying agent is less in usage amount, creates better social benefit, economic benefit and environment benefit and plays a certain environmental protection role by utilizing waste residue coal ash, gangue, iron ore slag and the like.

The invention relates to a roadbed filler for a road and a preparation method of the roadbed filler. The roadbed filler for the road is characterized by being prepared from lime, pulverized fuel ash, phosphogypsum and stabilizer. The weight percentage of each material in the lime, the pulverized fuel ash and the phosphogypsum is 15% of lime, 30-50% of pulverized fuel ash and 35-60% of phosphogypsum; the sum of the weight percentages of the materials is 100%; the stabilizer is water glass or NaAlO2 (sodium metaaluminate); the adding amount of the water glass is 2-6% of total mass of the lime, the pulverized fuel ash and the phosphogypsum, and the adding amount of the NaAlO2 is 0.5-2% of total mass of the lime, the pulverized fuel ash and the phosphogypsum. Due to the roadbed filler for the road prepared by the method, not only can the early strength be improved, but also the problem of water stability can be solved.

An earth curing agent used in curing salinized soil with heavy salt is manufactured by ordinary silicate cement, water quenched blast furnace slag, fly-ash, active mineral doped material, lime hydroxides of alkali metal or alkali earth metal and chemical dispersing agent in proper proportion. The middle and strong salinized soil of sulfate can be cured effectively by doping 8%-12% earth curing agents.

The invention discloses a steel slag composite soil road base material and a preparation method thereof. The steel slag composite soil road base material contains the following materials in parts by weight: 0-15 parts of water, 40-80 parts of common soil, 20-60 parts of steel slag without ageing treatment, 5-25 parts of complexing agent, 1-5 parts of cement, and 0.01-0.05 part of modifying agent.The preparation method comprises the following steps: mixing the steel slag, the soil, the cement and the complexing agent and then performing a compaction test, and testing to obtain an optimal watercontent; smashing the steel slag; spraying tap water accounting for 50% of the total water amount, and sufficiently blending the steel slag with the complexing agent, to obtain a slag-powder mixture;spraying the modifying agent to the common soil and doping the redundant tap water, to obtain modified soil; blending and compacting the slag-powder mixture, the modified soil and Portland cement, toobtain a road base material. The steel slag composite soil road base material and the preparation method can sufficiently realize recycling of metallurgic solid water resource, and reduce pollution to the environment in the steel slag stacking and ageing process; also can effectively save the sandstone material, and avoid destruction of the ecological environment caused by sandstone material mining, and has remarkable economical and social benefits.

The invention provides a steel slag and rubber asphalt concrete and a preparation method thereof. In the concrete, the steel slag is selected as a coarse aggregate and rubber asphalt is selected as a binder, and the concrete further comprises a fine aggregate and a filler; the mineral aggregate of the asphalt mixture is graded to form a coarse aggregate gap gradation framework solid type; the ratio of the rubber asphalt to the mineral aggregate is comprehensively determined through a Marshall compacting experiment to determine the range via the volume parameter of a Marshall test piece and verification on the road properties such as high-temperature rutting resistance and water damage resistance; when the rubber asphalt and the mineral aggregate are mixed and stirred, the heating temperature of the rubber asphalt is 175-180 DEG C and the heating temperature of the mineral aggregate is 10-30 DEG C higher than that of the rubber asphalt; moreover, the dry mixing time of the mineral aggregate is 15-20 s and the wet mixing time of the mineral aggregate is 35-40 s; and the ex-factory temperature of the steel slag and rubber asphalt concrete formed after the mixing and the stirring is 175-185 DEG C. The invention replaces the mineral aggregate by the steel slag, and can recycle the waste materials, save the stone resources, and reduce the destruction from the stone mining to the environment.

The invention discloses a preparation method of metal halide perovskite quantum dots. The method is characterized in that a liquid state hydrophobic fluorine-containing reagent and a precursor aqueoussolution used for preparing a metal halide perovskite material are mixed to obtain an emulsion, the metal halide perovskite quantum dots are synthesized in the emulsion, the surface of the metal halide perovskite quantum dots are tightly coated with the hydrophobic fluorine-containing reagent, so that the metal halide perovskite quantum dots which can dispersed in an aqueous solution as a singleparticle state are obtained. Through key integral process flow design and each technological step improvement for the preparation method, compared with the prior art, the problem of poor stability ofCsPbX3 quantum dots can be effectively solved, and the CsPbX3 metal halide perovskite quantum dots prepared by the invention have good dispersibility.

The invention belongs to the field of environmental protection, and in particular relates to a sludge treatment process. The sludge treatment process comprises the following steps: 1) impurity removal: use multi-stage grille to filter out the garbage in the sludge; 2) pretreatment: utilize the three-stage sludge settling tank to pretreat the sludge to obtain the first, second, and The sludge in the three-stage sludge settling tank, the sludge slurry and the supernatant after being settled in the three-stage sludge settling tank; 3) solidification treatment: respectively adopt mixing solidification and dehydration solidification methods for the first, second, and third-stage sludge sedimentation The silt and silt slurry in the pond are dehydrated and solidified to obtain silt-solidified soils A and B; 4) stacking and aging: transport the silt-solidified soils A and B to a temporary storage yard and age them for 3 to 7 days to complete the treatment. The sludge treatment process of the present invention can simultaneously process particles and sludge with high viscosity and low water content, as well as sludge slurry with fine particles, organic matter and high water content, and is especially suitable for river courses with complex components, wide particle distribution, and large water content differences silt.

The invention discloses a cadmium coordination polymer. The chemical formula of the cadmium coordination polymer is C60H36Cd3N12O17, 2,4,6-three(4-pyridyl) triazine serves as the main ligand of the cadmium coordination polymer, terephthalic acid serves as the auxiliary ligand of the cadmium coordination polymer, mixed liquor of N, N-dimethylformamide, ethyl alcohol and water serves as the solution, and accordingly a triple-interpenetrating three-dimensional 'tfz' topology network structure with an inner sealed hole is formed. The cadmium coordination polymer is prepared through the solvothermal method. The cadmium coordination polymer has the advantages that the coordination frame is high in thermal stability and water stability, and the light emitting performance of the cadmium coordination polymer can be controlled by packaging guest molecules with different functions. The manufacturing method of the cadmium coordination polymer has the advantages that the technology is simple in process and easy to apply, the crystal yield and purity are high, and the cadmium coordination polymer has good application prospect in the field of material science as an energy converter and a solid light-emitting material.

The invention relates to an ultraviolet light cured antifogging coating. The ltraviolet light cured antifogging coating adopts antifogging activated resin which contains activated double bond and can be cured by ultraviolet light as the main film-forming resin, and is prepared by mixing, based on total weight of the antifogging coating, 32-60% of the antifogging activated resin, 10-25% of activated diluent, 1.5-2.5% of photoinitiator, 25-40% of solvent, and 0.1-1% of adjuvant. The antifogging activated resin is prepared by subjecting reactive nonionic surfactant allyloxy nonyl phenoxy propanol polyoxyethylene ether, (methyl) acrylic acid and (methyl) butyl acrylate to free radical polymerization, and grafting and modifying by the polymer via glycidyl methacrylate, wherein the amount ratio of the glycidyl methacrylate to the (methyl) acrylic acid is 1-1.4. The film formed by the coating cured by the ultraviolet light is high in water resistance performance, durable in antifogging effect and high in hardness, and wiping resistance is improved remarkably.

The invention which relates to a cementing material with a glutinous rice lime mortar brick setting structure and a using method thereof belongs to the civil engineering field. The glutinous rice tabia cementing material is prepared according to the following steps: 1, preparing tabia; 2, weighing glutinous rice powder having a mass of about 3% of the dry mass of needed tabia, alum having a mass of about 0.4% of the mass of the glutinous rice powder and brown sugar having a mass of about 1% of the mass of the glutinous rice powder, and uniformly mixing the three substances; 3, putting the obtained mixture of the glutinous rice powder, alum and brown sugar into a heating vessel, adding clear water, uniformly stirring, and stewing to gelatinization; and 4, pouring the obtained well-gelatinized glutinous rice slurry into the tabia, and uniformly mixing in a mixer. The glutinous rice tabia cementing material of the invention, which has the advantages of energy saving, easily obtained materials, low processing degree, environmental protection, and improvement of the anti-compression shear strength of the brick setting structure, is an ideal cementing material for restoring and building a brick setting ancient architecture.

The invention belongs to the technical fields of road paving materials and processing and preparation thereof. A high-RAP-content asphalt mixture formula comprises the following components in percentage by weight: 40-65% of milled waste material, 30-50% of aggregate, 1.5% of mineral powder, 1.5% of ordinary portland cement, 0.3% of polyester fiber or basalt fiber, 2.8-3.9% of substrate asphalt. The content of RAP can be increased to 40-65%.

The invention relates to a construction method for processing soft soil foundation by using curing agent, which comprises the following steps: first, the curing agent and water are mixed into grout in appropriate proportion, the water in use can be river or lake water or even sea water; then, the grout is conveyed to a mixing machine at the construction position of the foundation, and directly injected into the soft soil with a high water content; simultaneously, the mixing machine is used to directly agitate the grout in situ until the grout is evenly mixed the entire soft soil foundation layer and consolidated into concretion body. The concretion body formed by the construction method can have a stronger bearing strength, and withstand the soaking or flushing of the sea water of river or lake water; under the condition of no water discharging, the concretion body can consolidate sludge and fine sands in situ; furthermore, the construction method for processing soft soil foundation by using curing agent, has the advantage of generating larger social benefits in terms of saving transportation resources, reducing the maintenance costs of the roads, minimizing the damage to environment due to cutting into mountains and crushing rocks, and accelerating the engineering construction.

The invention discloses a warm-mixing recycled asphalt mixture preparation method which comprises the following steps: I, preparing a compound regenerant; II, preparing a compound warm-mixing agent; III, measuring the mass content and natural gradation of old asphalt in an RAP material and respectively determining mass ratios of novel aggregate and novel mineral powder which are required for preparing the warm-mixing recycled asphalt mixture to the RAP material; IV, preparing a warm-mixing recycled asphalt mixture sample and determining an optimum asphalt-aggregate ratio of the warm-mixing recycled asphalt mixture; V, under the condition of the optimum asphalt-aggregate ratio, preparing the warm-mixing recycled asphalt mixture. According to the invention, the recycling rate of the RAP material reaches 70% or above, meanwhile, secondary aging of the asphalt mixture is avoided, the advantages of energy saving and carbon emission and harmful gas emission reduction are realized and the warm-mixing recycled asphalt mixture prepared through the preparation method has good pavement performance.

The invention relates to a method of preparing polymer asphalt with one step to modify the asphalt by adopting the polymer as a modifying agent. In a peptizator of 80 to 160 DEG C which account for 5 to 27 percent of the total weight of the raw materials, the polymer modifying agent and 0.1 to 2 percent of stabilizer which account for 2 to 9 percent of the total weight of the raw materials are added, and then is poured into a plastic extruder where the rotating speed is 300 to 800 rotations per second to be extruded; the extruding temperature is controlled to be 130 to 210 DEG C; the extruded polymer is directly and mixingly stirred for 0.5 to 6 hours together with the asphalt which accounts for 62 to 89.9 percent of the total weight of the raw materials, then the polymer modified asphalt is gained, which is provided with good heat preservation function, good low temperature expanding performance, anti-fatigue and anti-tearing function and relatively good weatherproof function. After being mixed with the stones, the mixed materials perform good water stability and high and low temperature stability, which can effectively improve the using performance of the asphalt pavement and prolong the service life.