83results about How to "Does not affect physical and chemical properties" patented technology

The invention belongs to the field of agricultural films, and proposes a biodegradable weed-removing film and a preparation method thereof. The herbicide is mixed with a coupling agent, a biodegradable resin and a processing aid, and extruded and granulated in an extruder to obtain a biodegradable mulch film. Biodegradable weed-removing masterbatch, this kind of weed-killing masterbatch contains 10-90% biodegradable resin, 2-80% herbicide, biodegradable resin includes PLA, PBS, PPC and PBAT; then biodegradable weed-removing The masterbatch and biodegradable polymer materials are mixed according to the traditional plastic blow molding process to obtain a biodegradable weed-removing mulch film. The proportion of herbicides in this weed-killing mulch film is 0.5-20%. The biodegradable weed-removing mulch film prepared by this method , can adapt to the climate and soil environment in various places, meet the requirements of increasing temperature and moisture conservation required for plant growth and development, and can be decomposed by microorganisms in the cultivated land environment after reaching the use requirements; the preparation method of the present invention is simple and easy, and the prepared film can It meets the use requirements of mechanical farming and has broad application prospects.

The present invention relates to a method for forming superhydrophobic surface of solid material, belonging to the field of solid material surface modification technology. Said method includes the following steps: firstly, uniformly mixing performed polymer and cross-linking agent according to a certain mass ratio, pouring the obtained mixture onto the superhydrophobic surface, standing still, then heating, solidifying and stripping to obtain elastic soft stamp; dissolving soluble polymer material in solvent, then using prepared elastic soft stamp to stamp the above-mentioned solution on the surface of solid material.

The invention belongs to a resin based composite material liquid forming technique, and relates to a composite material liquid pressure forming method. The periphery of a predetermined mold body is filled with resin, and the predetermined mold body is continuously pressurized and cured successively by resin via a first pressure source and a second pressure source. According to the invention, the predetermined mold body is pressurized and cured continuously by resin; a molded composite material product not only has high fiber volume content equivalent to a composite material molded by a prepreg/autoclave technique, but also has the high precision equal to the composite material molded by an RTM technique; the applicable range of the composite material molded by a liquid forming technique is expanded; the molding efficiency is improved obviously; the manufacturing cost is reduced.

A fire retardant for wood is proportionally prepared from amino compounds, P contained compound, alcohol compound, boron compounds, aldehyde compounds and water. It has also the anticorrosion and insect-proof functions.

The invention relates to a cleaning method. The cleaning method comprises the following steps that deposit sediment on the surface of a workpiece is removed through a water jet scalpel; sand blastingtreatment is performed on the surface of the workpiece; the surface of the workpiece is cleaned comprehensively; and the workpiece is dried. According to the cleaning method, the water jet scalpel isadopted and does not affect the physical and chemical properties of the workpiece, therefore, by removing the deposit sediment on the surface of the workpiece through the water jet scalpel, the workpiece can be protected, and the deposit sediment removing efficiency can be improved.

The invention belongs to the field of medical materials for repairing bone injury and related tissues, and particularly discloses rubidium-containing multistage mesoporous bioactive glass, and a preparation method and application thereof. The preparation method comprises the following steps: (1) dissolving a template agent, a calcium source, a phosphorus source and a silicone source in ethyl alcohol to obtain a solution A, and dissolving a rubidium source in deionized water to obtain a solution B; (2) mixing the solution A and the solution B, and stirring for 6 to 12 hours by means of a magnetic stirrer to obtain mixed gel; (3) soaking polyurethane sponge in the mixed gel in the step (3) for 10 to 20 minutes, taking the sponge out, heating and blow-drying the sponge, and repeating the steps for 3 to 6 times; and (4) after the sponge is completely dried, sintering to obtain a rubidium-containing mesoporous bioactive glass medicine carrier. The bioactive glass and the medicine carrier disclosed by the invention have the advantages of high specific surface area, high biocompatibility, high antibacterial property and the like, is applicable to a bone repair material, promotes wound healing of related tissues, and prevents bacterial infection.

The invention relates to a plant extraction-agronomic regulation and control combined remediation method for alkalescent heavy metal contaminated farmland soil. According to the method, soil in a to-be-remediated area is pretreated; hyperaccumulation plants are planted once or multiple times until the soil heavy metal content in the to-be-remediated area meets a remediation target value; after thesoil is retreated, low-accumulation crops of target heavy metals are planted; edible parts are harvested after maturation, the content of heavy metals is detected, the crops can be edible or sold inthe market if meeting a standard, otherwise, harmless treatment is performed; and a plurality of low-accumulation crops are planted by adopting different agronomy regulation and control, and the low-accumulation crops with the edible parts meeting the standard are screened out for long-term planting in different seasons. According to the invention, the method has the advantages of synchronous achieving of restoration, production and earning, simplicity, high efficiency, high soil utilization rate, thorough restoration, long maintenance time, no potential risk, no influence on the structure andphysicochemical properties of soil, and realization of long-term planting of heavy metal low-accumulation crops meeting standards according to actual conditions in a time-sharing manner, so the quality and the yield of the crops are guaranteed.

The invention discloses a microfluidic measuring method of a liquid molecular diffusion coefficient. The microfluidic measuring method comprises the following steps: a, separating liquid to be measured into two parts, wherein one part is raw liquid, and the other part is contrasting liquid in which 1*10<-4>-1*10<-3> g/L of fluorescent tracer is dissolved; b, respectively simultaneously injecting the raw liquid and the contrasting liquid into a chip at the same speed through a microfluidic chip sample injection port; c, after flow is stabilized, acquiring a fluorescent image of the liquid to be measured in a mass transfer process; d, defining a divergence angle theta; e, selecting data l and delta positioned on the relative concentration line on which the concentration of the fluorescent tracer is 0.6-0.8 on the fluorescent image to obtain the divergence angle theta; and f, acquiring the liquid molecular diffusion coefficient. The microfluidic measuring method disclosed by the invention is simple and convenient and higher in image data accuracy and the error can be controlled to be less than 3%. Besides, the microfluidic measuring method disclosed by the invention can be used for measuring the molecular diffusion coefficient of conventional fluid, has the advantages of low sample consumption, accurate measuring result, high analyzing efficiency and the like, is suitable for a scientific research experiment and experimental teaching.

A broad-spectrum bactericide is prepared from the nano-porous material chosen from the molecular sieves of A, X and Y-type zeolite, mordenite, Si-Al zeolite, etc. and the silicate-base zinc oxide ions as active component. It is suitable for skin tinea fungus, multiple pathogenic funguses, and other 10 bacteria including candida, blue mold, aspergillus, etc.

A broad-spectrum antibacterial silicate-based angstrom Ag ion-nonoporous material able to kill more than 11 bacteria including ring worm, fungus, candida, blue mold, etc is prepared from the Ag ions and the silicate-base nanoporous material chosen from the molecular sieves of X-ray zeolite, A-type zeolite, Y-type zeolite, mordenite, etc.

A nano-porous composite Ag-Zn particle material in the form of white or gray powder for adsorbing, suppressing and killing bacteria is prepared from the Ag salt, Zn salt and silicate based nano-porous material through thermodynamic ion exchange or ionic exchange in solution, drying and heat treating. It can be used for food, medicine, health-care product, cosmetics, etc.

The invention relates to an aromatic environment-friendly formaldehyde eliminating paint additive, which is composed of 8-12g of an onion extracted solution, 2-4g of alpha-amyl cinnamaldehyde, 8-12g of active calcium, 4-6g of tea polyphenol, 2-4g of urea, 4-6g of ethylene glycol, 4-6g of tourmaline micropowder, and 70-100g of waterborne polyurethane. During use, the paint additive is mixed with paint according to a weight ratio of 1-1.5:30-40, and then the mixture is applied to brushing directly. The paint additive provided by the invention takes waterborne polyurethane as the carrier, is added with the active ingredients active calcium, tourmaline micropowder, tea polyphenol and the like, and can be directly brushed on the surface of a plate to reach formaldehyde adsorbing, antibacterial and other efficacy.

The invention provides a sea-island fiber adopting PET as an island component, a preparation method thereof, and a superfine fiber formed by the sea-island fiber. The sea-island fiber adopting the PETas the island component adopts modified copolyester as a sea component. The modified copolyester is adopted as a sea material of the sea-island fiber, and the PET is adopted as an island material, sothat the formed sea-island fiber has good spinnability; and in addition, due to the characteristic of the modified copolyester, the sea-island fiber can be split under a mild condition, and the mildslitting condition cannot affect physical and chemical properties of the island component PET, so that the performance of the PET superfine fiber formed by the island component cannot be damaged.

The invention provides a sea-island fiber with PA6 as island components, a preparation method thereof, and an ultrafine fiber formed by the sea-island fibers. According to the sea-island fiber with PA6 as the island components, modified copolyester is used as sea components. By using the modified copolyester as the sea components of the sea-island fiber and using PA6 as island materials, the sea-island fiber is good in spinnability; because of the properties of the modified copolyester, the sea-island fiber can be split in a mild condition which does not affect the physical and chemical properties of the island components PA6, and thus, the performance of the ultrafine fiber with PA6 as the island components is not damaged.

The invention relates to the field of lubricating grease, in particular to composite lubricating grease for a heavy load bearing and a preparation method thereof. The composite lubricating grease is prepared from the following ingredients in percentage by weight: 99.2 to 99.8 percent of lithium-based lubricating grease and 0.2 to 0.8 percent of micro carbon spheres and nanometer particles. The micro carbon spheres and nanometer particles are uniformly distributed in the lithium-based lubricating grease by using ethanol as carriers. Compared with the existing ordinary lithium-based lubricating grease, the composite lubricating grease prepared after the ethanol evaporation has the advantage that the improvement is realized in aspects of friction heating, friction mark area and the like.

The invention discloses a novel nano-antibiotic coating. The novel nano-antibiotic coating comprises, by weight, 3-16 parts of nanometer titanium dioxide, 60-70 parts of a resin, 6-20 parts of a hardener, 20-30 parts of a pigment, 15-25 parts of an acrylic emulsion and 20-30 parts of water. The novel nano-antibiotic coating prepared in the invention can effectively inhibit bacteria like Escherichia coli, Staphylococcus aureus and Candida albicans, and the antibiosis rate is above 90%. The novel nano-antibiotic coating can effectively prevent the growth and breeding of various bacteria in various public occasions, can kill various bacterial fallen on the coating, and also has the advantages of simple production process, easy operation and low cost.

The invention relates to an experimental device and a method for the shear performance of a complex variant region of coastal soft clay. The device comprises a sample preparation device, a sampling device, and a performance testing device. The sample preparation device comprises a preparation bin. An upper cover plate and a bottom plate are disposed at the upper end and the lower end of the preparation bin respectively. The upper cover plate and the bottom plate are fixedly connected by a first connector. The first connector is detachably connected to the upper cover plate. A grouting port isformed on the upper cover plate. An ejection mechanism is disposed below the bottom plate. The upper end of the ejection mechanism extends into the preparation bin, and the lower end is fixed to a base. The base and the bottom plate are fixedly connected by a second connector. A sample of the complex variation region can be obtained by the experimental device, which is convenient for studying theshear performance of the sample.

The present invention relates to a preparation technology of composite semen coicis ultrafine powder. The preparation technology of the composite semen coicis ultrafine powder specifically comprises the following steps: S1, semen coicis and red beans are respectively ground into powder; S2, acid extracting and degreasing agent adding are conducted to treat the semen coicis powder and red bean powder to remove starch and lipids; S3, the semen coicis powder and red bean powder are uniformly dispersed in a sodium alginate solution until a large-fluidity sodium alginate gel solution containing semen coicis powder particles and red bean powder particles is formed; S4, polylysine or polyglutamic acid are respectively added in the sodium alginate gel solution and pH of the gel solution is adjusted, so that the two sodium alginate gel solutions have opposite charges; S5, after the sodium alginate gel solution containing the semen coicis powder particles or red bean powder particles is input into a ball-forming device for splitting, the solution falls into calcium chloride to form calcium alginate microspheres; S6, the calcium alginate microspheres wrapped with the semen coicis powder particles and the calcium alginate microspheres wrapped with the red bean powder particles are mixed to enable the calcium alginate microspheres to absorb each other to agglomerate; and S7, after drying, the microspheres are sent to an ultrafine pulverizer for multiple pulverization.

The invention discloses a formaldehyde-absorbing paint coating for interior walls and a preparation method thereof. The formaldehyde-absorbing paint coating comprises the following raw materials in parts by weight: 30-40 parts of acrylic resin, 30-40 parts of cellulsic resin, 15-20 parts of rosin resin, 1-2 parts of dye, 2-3 parts of nanoscale titanium dioxide, 3-5 parts of sodium carboxymethyl cellulose, 5-7 parts of modified white carbon black, 2-3 parts of a dispersing agent, 1-2 parts of a defoaming agent, 3-5 parts of a formaldehyde absorbent, 1-2 parts of diphenyl polysiloxane and 10-15parts of a plant extracting solution. According to the invention, the plant extracting solution is added into the paint coating, natural properties of plants are utilized to have effects of formaldehyde absorption and anti-microbico, when the free formaldehyde in the plate is released outwards, the formaldehyde removal additive in the paint film is used for synergistic adsorption, so that the plant faint scent is added, the pungent smell of the paint is reduced, the physical and chemical properties of the paint are not influenced, and the formaldehyde removal additive and the paint have a synergistic effect to remove the free formaldehyde in various kinds of furniture.