168 results about "Polyactive" patented technology

This invention discloses a nourishing slow-released type organic bulking agent for processing water and its preparation. This bulking agent includes 60-100 parts of high polymer basis material, 1-15 parts of nutrient substance, 1-10 parts of slow-releasing control substance, and 1-10 parts of dispersing lubricant. When prepare, lubricate slow-releasing control substance with 0.5-3 parts of dispersing lubricant; lubricate high polymer basis material with remaining dispersing lubricant, add in stirring machine, mix with above mixture, mix uniformly, transfer mixture into stirring dipper of plastic injection molding machine, extrude and form by bulking agent tooting. Organic bulking agent prepared by this invention slow-releases nutrient substance that is required for microbes forming biofilm. It has characteristics of fast forming biofilm, more microbial biomass, and activity. It is especially suitable for oxygen degrading process of waste water that contains difficult degraded toxic pollutant.

Polymeric compositions that include polyurethane polymers derived from a polyisocyanate compound and a polyactive hydrogen compound. The polyurethane compound is at least partially endcapped with a group including at least one antimicrobial quaternary ammonium compound. The polymeric composition of the present invention is capable of forming a self-supporting film. The polymeric compositions are suitable for coating substrates to effectively kill or prevent the growth of microorganisms such as bacteria, mold, mildew, algae fungi and the like. The polymeric compositions are particularly useful for protecting construction materials used in moist, outdoor environments to prevent discoloration or decay from microorganisms and for surfaces in health care facilities to mitigate the spread of pathogens.

The invention relates to a fluorine removal agent and a preparation method thereof. The fluorine removal agent is prepared by carrying out mixing, atmospheric warming reaction, separation and vacuum drying to metal salt solution and polyhydroxy organic ligand solution which serve as raw materials, wherein the concentration of the metal salt solution is 0.1-5mol / L, the concentration of the polyhydroxy organic ligand solution is 0.1-5mol / L, and the mixing volume ratio of the metal salt .solution and the polyhydroxy organic ligand solution is (1:0.1)-(1:10). The fluorine removal agent realizes high adsorption capacity by interaction of metal ions and fluorine ions in a metal organic framework and more active sites provided by the framework structure, the secondary pollution caused by ion loss can be avoided by utilizing the high structural stability of the metal organic framework, and the fluorine removal agent can be widely applied to aspects of fluorine-containing sewage treatment, high-fluorine surface water purification and the like. The preparation method of the fluorine removal agent is carried out at an atmospheric pressure, thus being safe and reliable, less in equipment investment, simple in technique, easy to operate, and easy for realization of large-scale synthesis.

The present invention relates to an acrylic-based adhesive composition, containing component (A) and component (B). Said component (A) contains (methyl) acrylamide or its N,N-substituted monomer (methyl) acrylate copolymer, and the component (B) contains tertiary amine or quaternary ammonium based (methyl) acrylate copolymer. Said invention also relates to application of said adhesive composition in transdermal therapeutic system, medicine composition containing said adhesive composition and transdermal therapeutic system and its preparation method.

An organosilicon-polyurea base polymer capable of self-crosslinking under humid condition, an elastomer prepared therefrom, preparation thereof and use of the same. By using an amino-polysiloxane, a polyisocyanate, and multiple active amino-containing silane as main materials, an organosilicon-polyurea base polymer is prepared by virtue of the copolymerization thereof. The organosilicon-polyurea base polymer has excellent high- and low-temperature resistance, and solvent resistance, and relatively better mechanical properties, and is also curable at room temperature. A crosslinked network structure of intra- and inter-molecules is formed in the base polymer through inter-crosslinking of siloxane groups at terminals and side chains of the molecular chains, thereby producing adhesives, sealants, coatings and buffer layers, in particular sealants used in automotive industry.

A combination pharmaceutical preparation including two different active drugs of the same ionic charge conjugated with a single resin particle, without one significantly displacing the other, and without retarding the initial availability of either active. Also, methods for the manufacture of a multiple active drug resin conjugate, and for the in vivo release of a combination of pharmaceutically active drugs from a multiple active drug resin conjugate.

The invention discloses a preparation method and application of CoFe2O4 nanosheet oxygen evolution catalyst, which belongs to the technical field of electro-catalysis of energy materials. The preparation method comprises the following steps: (1) preparing an iron-cobalt precursor; and (2) preparing the CoFe2O4 nanosheet oxygen evolution catalyst. The preparation method discloses in the invention is low in cost, simple and controllable in method, easy in operation, simple in equipment and less in pollution; and the prepared high-performance high-oxygen-vacancy CoFe2O4 nanosheet oxygen evolutioncatalyst is more in oxygen vacancies, more in active sites and high in electro-catalysis efficiency.

The invention discloses a non-uniform honeycomb type denitration catalyst and a preparation method thereof. The catalyst comprises a support and an active component V2O5, WO3 or MoO3 supported on the support, wherein the support is prepared from TiO2 powder, deionized water, an organic binder, a plasticizer, an extrusion aid, ammonia water, glass fibers and the like through mixing, extruding, drying and calcining. The invention further discloses the preparation method of the catalyst. According to the prepared catalyst, the active component is distributed non-uniformly on the support and is mainly distributed on the outer surface of the catalyst, more active sites are provided, so that the reducing capacity of NOx is improved, the SO2 oxidation rate is reduced, the use amount of W or Mo is reduced through surface distribution of a W component or a Mo component, the cost is reduced remarkably, and promotion and application of denitration engineering are facilitated.

The invention provides a composite aerogel material and a preparation method, multifunctional recycling method, multifunctional composite aerogel material and application thereof. By adopting the combination of a water-soluble high-molecular polymer and a nanowire, an organic-inorganic composite aerogel material rich in multi-active sites shows the excellent adsorption performance of heavy metal ions. Complex production equipment is not needed, the method is simple and easy to implement, the time and labor are saved, and industrial large-scale production is easy to achieve. Accordingly, on the overall design ideas, the purpose of aiming at design of a new structure and performance study of materials is achieved, the subsequent processing process and the reuse angle of the material are created, composite aerogel absorbed with the metal ions is converted into a functional material, the new function of the material is further performed, requirements in multiple aspects are met, multistage utilization of the material is embodied in the overall technical scheme, and then the use efficiency and the recycling series are improved.

A polyurethane dispersion and a preparation method thereof are provided. The polyurethane dispersion is stable in alcohol and water mixtures. The dispersion comprises the reaction product of: (a) at least one isocyanate-terminated polyurethane prepolymer, the reaction product of: (i) at least one polyactive hydrogen insoluble in said alcohol Compounds wherein the multi-active hydrogen compound is an alkyl, aryl or aralkyl structure optionally substituted by N, O and S; (ii) at least one polyisocyanate, and (iii) at least one soluble in said A multi-active hydrogen compound of a mixture of alcohol and water; (b) a multifunctional chain extender; and (c) at least one chain stopper; wherein the equivalent ratio of the difunctional chain extender to the prepolymer isocyanate is 0.60:1.20.

The invention belongs to the technical field of environmental protection and flame retardance, and particularly relates to a biomass-based environment-friendly flame retardant PD flame-retardant finished pure cotton fabric and a preparation method thereof. The raw materials of the biomass-based environment-friendly flame retardant PD flame-retardant finished fabric are prepared from a flame retardant PD and a cotton fiber fabric; the flame retardant PD is synthesized by reacting biomass phytic acid and dicyandiamide; and the PD flame-retardant finished fabric is obtained by rolling and baking a flame retardant PD and the cotton fiber fabric. The synthesis method is simple, environment-friendly and pollution-free, and EDS and infrared analysis test results show that PD is a multi-active phosphorus-nitrogen flame retardant; the fabric subjected to PD flame-retardant finishing has better thermal stability and char forming property, and PD has a phosphorus-nitrogen synergistic flame-retardant effect, is excellent in flame-retardant property and better in washability, and can be used as an environment-friendly washable flame retardant for pure cotton fabrics; and PD flame-retardant finishing has small influence on the whiteness and breaking strength of the fabric.

The invention discloses a preparation method of regenerated cellulose fiber subjected to cation grafting modification and salt-free dyeing, which adopts cellulose pulp as a main raw material, and orderly comprises the following procedures of dipping, squeezing, crushing, aging, yellowing, dissolving, filtering, defoaming, spinning, post-treatment, and drying; a cellulose cation modifier is added in the dissolving procedure or the spinning procedure; the cellulose cation modifier is one or a mixture of more than one of an amination reagent, a quaternization reagent, a azetidine cation compound, and a modified natural cation reagent. Therefore, the method of the invention prevents the disadvantages of dye waste, uneven dyeing, and the like caused by the adoption of dyes with multiple active groups, and also prevents the problem of process flow increasing caused by the adoption of a pretreatment mode.

Relating to the technical field of nitrogen-containing sewage treatment, the invention provides a carbon nanotube / hydrotalcite material for removal of nitrate nitrogen from water and a preparation method. The method includes: conducting in-situ generation of a lanthanum-doped hydrotalcite layer on the pipe wall of a multiwalled carbon nanotube by coprecipitation, and employing a cationic surfactant cetylpyridine bromide for surface modification of the hydrotalcite layer, thus obtaining the carbon nanotube / hydrotalcite material for removal of nitrate nitrogen from water. According to the preparation method provided by the invention, hydrotalcite is loaded on the pipe wall of the multiwalled carbon nanotube, thus increasing the specific surface area of hydrotalcite and exposing more active sites, and rare earth metal lanthanum is also employed for doping, lanthanum undergoes complexing with NO3<-> to form a stable polyamine complex. Further, cetylpyridine bromide is employed for surfacemodification, thus reducing the electronegativity of the hydrotalcite surface, and providing more active sites for adsorption of NO3<->. Therefore, the carbon nanotube / hydrotalcite material has a goodremoval effect on nitrate nitrogen in water.

The invention relates to a method for preparing biodegradable super water absorbent gamma-polyglutamic acid (gamma-PGA) hydrogel. The method comprises the following steps: using transglutaminase (TG enzyme) as a crosslinking agent, and through acyl transfer reaction, performing crosslinking on gamma-PGA and casein protein to form composite protein super water absorbent hydrogel. The invention further relates to the biodegradable super water absorbent gamma-polyglutamic acid (gamma-PGA) hydrogel and application thereof. The method has the advantages that (1) the reaction conditions are mild, the time is short, the operation is simple and convenient, and requirements on equipment are low; (2) sources of raw materials are security, and the hydrogel is environmental-friendly and degradable; (3) lots of active sites are positioned inside the hydrogel, and can be combined with medicine to retain the activity of the medicine, so that an ideal biomedical material is provided; (4) the hydrogel has a stronger water absorption swelling property and a stable watering binding capacity.

The invention discloses a gas-phase bulk polymerization method of a polyolefin alloy, in particular a polybutene alloy material. The method is characterized by (1) adopting a continuous or batch polymerization process; (2) performing gas phase polymerization of the polybutene alloy material in a single gas phase reactor or two or more gas phase reactors which are connected in series; and (3) respectively implementing homopolymerization of two monomers in two stages. The method adopts a single heterogeneous Ziegler-Natta catalyst which has multiple active centers and good hydrogen sensitivity to catalyze stage-by-stage polymerization of butene-1 and propylene, so that the polybutene alloy material which is less in catalyst residue and good in particle shape, does not have agglomerates and has a core-shell structure can be obtained. The prepared polybutene alloy material comprises the following components in percentage by mass: 10-99% of polybutene-1, 1-80% of polypropylene and 0.01-10% of butene-1-propylene copolymer, and can be used for replacing part of polyethylene and polypropylene in use.

Compliant liquid-free cleaning compositions and methods for using the same are provided. A composition that is pliable and putty-like that can be rolled and pressed onto dirt to clean the dirt off of a surface is provided. The composition can be used on hands, household surfaces, countertops, or any item displaying dirt. The invention eliminates the need for using water-based or other liquid cleansers.

The invention discloses a preparation method of a ruthenium doped LDH / rGO composite material and an application of the composite material in hydrogen evolution reactions. Through the electrostatic interaction between hydrotalcite and graphene oxide, the ruthenium doped LDH / rGO composite material is prepared by a one-step reflux method. Hydrotalcite is loaded on graphene with a large surface area;the conductivity of graphene is enhanced; due to the anchoring effect of graphene, agglomeration of hydrotalcite is avoided; the active specific surface area is increased, and more active sites are exposed. The prepared composite material has a cobalt electrocatalytic active site and a ruthenium electrocatalytic active site, through the cooperation between two electrocatalytic active sites, the energy barrier of electrocatalytic reactions is reduced, the electrocatalytic over-potential is obviously reduced, due to the doping of Ru, the state of electrons on the surface of the composite material is changed, the oxygen defects are increased, the adsorption on intermediates by the reaction active sites is promoted, water electrolysis is accelerated, and the hydrogen evolution performance is enhanced.

The invention relates to the technical field of membrane separation, and provides a dopamine-assisted modified hybrid composite forward osmosis membrane and a preparation method thereof. An aqueous solution containing inorganic salt and ethanol is used as a coagulating bath; the phase separation speed and the crystallinity of polyvinylidene fluoride are regulated and controlled, a polyvinylidene fluoride membrane surface with a micro-nano structure is constructed, the supporting membrane is endowed with large porosity and high specific surface area, rapid diffusion of a salt solution in membrane pores in the forward osmosis process is promoted, concentration polarization is reduced, membrane resistance is reduced, and the water flux of the forward osmosis membrane is increased; the preparation method comprises the following steps: simultaneously depositing a hydrophilic biomass material and ZIF-8 on the surface of the supporting membrane by utilizing the super-strong adhesion characteristic and multi-active functional groups of dopamine to construct a defect-free hydrophilic hybrid selective cortex and improve the salt rejection rate; ZIF-8 nano particles are generated in situ anduniformly dispersed in the cortex, so that the problem of interfacial compatibility of the hybrid material is solved, and meanwhile, a nano water channel is provided by a cavity in ZIF-8, so that thewater flux is improved while the salt rejection rate is ensured.

The invention belongs to the technical field of energy material, and relates to a preparation method of a carbon cloth-based ferric cobaltate / molybdenum disulfide graded structure electrode material.The preparation method comprises the steps: firstly preparing a carbon cloth-based ferric cobaltate nanorod array, adding thiourea and sodium molybdate into an alcohol solution, stirring, soaking thecarbon cloth-based ferric cobaltate nanorod array in the solution and stirring again, then transferring to a reaction kettle for heating reaction, cooling to room temperature after the reaction, and washing and vacuum drying so as to obtain the carbon cloth-based ferric cobaltate / molybdenum disulfide graded structure. The alcohol solvent is used, the alcohol solvent is a low-polar organic solvent, the hydroxyl group in the alcohol solution is more beneficial to improve the wettability of the electrode material and promote the electrode material to produce more active sites and has less damageto the morphology of carbon cloth-based ferric cobaltate nanorod array in comparison with the water. The formed electrode material is beneficial to increase the contact area between the material andthe electrolyte, improve the ion and electron transmission efficiency and reduce the internal resistance of the system. The rate performance can be improved and the cycle stability can be guaranteed.

The invention discloses a preparation method for a one-step synthetic multilayer nanometer box-shaped CuO-CeO2 catalyst for CO preferential oxidation reaction in hydrogen-rich gas. The catalyst is composed of a plurality of layers of homocentric-square-shaped nanometer box structures which are composed of nanometer CuO and CeO2, triblock copolymer serves as a template, cupric nitrate and cerium nitrate serve as raw materials, and a simple one-step method is adopted to synthesize the catalyst. The multiple layers of cavity structures of the prepared catalyst expose more CuO contact interfaces and CeO2 contact interfaces, and therefore more active sites are provided for the CO preferential oxidation reaction. The catalyst with the special features has good performance that CO complete conversion is achieved at the low temperature, and wide temperature windows with CO being completely converted exist.

The invention relates to a multi-layer co-extruded full-degradable high-barrier packaging film and a preparation method thereof, the packaging film is composed of five layers: the first layer is an outer protective layer A, the component of the first layer is a blend of PLA, PBAT, a carbodiimide hydrolysis-resistant agent and an anti-ultraviolet agent; the second layer is a bonding layer B, and the component of the bonding layer B is a blend of PLA and a multi-active functional group compatibilizer; the third layer is a high-barrier layer C, and the component of the high-barrier layer C is PGA; the fourth layer is a bonding layer D, and the component of the bonding layer D is a blend of PLA and a multi-active functional group compatibilizer; and the fifth layer is a heat sealing layer E, and the component of the heat sealing layer E is a blend of PLA and PCL. The multi-layer co-extrusion full-degradation high-barrier packaging film is prepared by adopting a multi-layer co-extrusion method. The multi-layer co-extrusion full-degradation high-barrier packaging film has the advantages of good weather resistance, high barrier property and slow barrier property attenuation; the shelf life of products packaged by the multi-layer co-extrusion full-degradation high-barrier packaging film can be prolonged; and the compost full degradation can be achieved, and the multi-layer co-extrusion full-degradation high-barrier packaging film is particularly suitable for the field of packaging film bags which need high barrier, are durable and meet the full degradation requirement.

The invention belongs to the field of battery materials, and particularly discloses a polymer@two-dimensional material modified layered double hydroxide composite diaphragm material which comprises apolymer material and an active material compounded in the polymer film material, wherein the active material is the two-dimensional material modified layered double hydroxides and comprises layered double hydroxides and a two-dimensional material growing on the surfaces of the layered double hydroxides in situ; the two-dimensional material is at least one of molybdenum diselenide, tungsten diselenide, molybdenum disulfide and tungsten disulfide. The invention also provides preparation of the diaphragm and application of the diaphragm in a lithium-sulfur battery. The material is advantaged in that the brand-new material provided by the invention can effectively solve the boundary effect of a two-dimensional material, can open more active sites, avoids agglomeration, and can unexpectedly improve the performance of the battery diaphragm by adding the brand-new material into the battery diaphragm, for example, the sulfur loading capacity and the catalytic degradability to polysulfide compounds are improved, and the performance of the battery is improved.

The invention relates to the field of electrocatalytic materials, and in particular, relates to an M2C / carbon nanosheet composite material and a preparation method and an application thereof. The composite material comprises a porous carbon nanosheet matrix and M2C particles growing on the porous carbon nanosheet matrix, wherein M is a Mo element and / or a W element. The obtained composite materialcatalyst has a large specific surface area and a large electrochemical active area, and can expose more active sites, so that the electro-catalytic hydrogen evolution capacity of the catalyst is greatly enhanced.

The present invention provides escherichia coli engineering bacteria expressing active peptides and a method of preparing mixed polypeptide CEI-12 and CEI-7 with the escherichia coli engineering bacteria, and relates to the bioengineering field. The preservation number of the engineering bacteria is Escherichia Coli BL21-MF3A3 CCTCC No: 2010204. By using smaller His label segment on pET-30a to subject CEI-12 polypeptide and CEI-7 polypeptide to fusion expression and alternative cascade three times, the method increases the ratio of target polypeptide in recombination protein, greatly increases the expression efficiency, and reduces the separating difficulty of small peptides.

The invention discloses a two-dimensional transition metal boride material, and a preparation method and application thereof. The molecular formula of the two-dimensional transition metal boride material is shown as MB or MnB2n-2, M is selected from previous transition metals Mn and W or a combination of Mn, W, any two or more of Cr, Fe and Mo, B is a boron element, and n is 2, 3 or 4. The two-dimensional transition metal boride has a tetragonal system structure, and the space group is Cmmm. The invention also provides a preparation method of the two-dimensional transition metal boride material by etching the MAB phase in a dilute alkali solution. The layered material of the two-dimensional transition metal boride material provided by the invention has a series of advantages of magnetic adjustability, heat conduction, electric conduction, multiple active sites and the like, and the structure and the property of the material are regulated and controlled by regulating and controlling the content, the position and the type of an M-site element; in addition, the preparation process is simple and easy to operate, and has potential application prospects in the fields of wave absorption, energy storage, catalysis and the like.

The invention relates to a preparation method of a catalyst for propane oxidative dehydrogenation to propylene. The catalyst comprises an active ingredient, an additive and a carrier. The preparation method is as below: treating a waste residue oil hydrogenation catalyst to prepare a catalyst precursor A; reducing the catalyst precursor A in a reducing atmosphere; adding the reduced catalyst precursor A and a polyol solution into a high pressure reactor, carrying out a hydrogenation reaction, placing a reaction effluent, filtering and dying to obtain a catalyst precursor B; and dissolving the active ingredient precursor in water to obtain a solution C, then adding the catalyst precursor B, drying and calcining to obtain the catalyst. The method of the present invention not only makes full use of waste residue oil hydrogenation catalyst, saves cost, but also promotes dispersion of more active ingredients on the surface of the carrier. The method both improves the utilization of the active metal and the conversion of propane and selectivity of propylene.

The invention relates to a high temperature resistant defoaming agent and application thereof in delay coking, the defoaming agent is prepared by compounding fluorine-containing polysiloxane, hyperbranched polyether, modified nano silica, vinyl-containing polysilazane and a solvent under certain conditions. A preparation method of the defoaming agent is as follows: dispersing required specifications of the fluorine-containing polysiloxane, the hyperbranched polyether and the modified nano silica in the solvent at a constant temperature of 60-100 DEG C, then cooling to room temperature, mixing, simultaneously adding the vinyl-containing polysilazane, and then filtering away non-homogeneous impurities to obtain the defoaming agent finished product. The efficient multi-active-component defoaming agent used in the delay coking process has good defoaming and anti-foaming properties at a high use temperature, also can maintain the high chemical stability, and is not easy to generate low-boiling-point silicon-containing small molecules cyclized compounds, and the adverse influence of the defoaming agent on the subsequent processing process can be avoided.

The invention provides an adsorbent for removing radioactive iodine ions and application of the adsorbent. According to the technical scheme, titanium carbide powder and dopamine are used as main rawmaterials; the titanium carbide powder is etched by hydrofluoric acid to complete large-scale layering so as to form an MXene material; then dopamine monomers are subjected to self-polymerization on the surface of the MXene by combining a mussel bionic mode to complete surface modification of the two-dimensional layered MXene material; and the modified MXene material is used for carrying silver oxide nano particles. A preparation method has a simple process and is convenient to operate, and the prepared MXene adsorbent has a large specific surface area, a large amount of active sites and highstability. Experimental verification shows that the maximum adsorption amount of iodine ions in a solution can reach 80.85 mg / g, and the removal rate of iodine ions can reach about 80%. Therefore, theadsorption effect of the adsorbent on iodine ions is exact and effective, adsorption efficiency is high, and a new way is provided for removal of radioactive iodine.