157 results about "Polyactive" patented technology

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.

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.

Provided are a polyurethane dispersion and a preparation method thereof. The polyurethane dispersion can be stably dispersed in alcohol and water mixture. The dispersion comprises the reaction product of (a) at least one isocyanate-terminated polyurethane prepolymer comprising the reaction product of (i) at least one polyactive hydrogen insoluble in the 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 the A polyactive hydrogen compound of a mixture of alcohol and water; (b) a polyfunctional chain extender; and (c) at least one chain stopper; wherein the equivalent ratio of the difunctional chain extender to 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.

The invention relates to an ultrafine ruthenium nanoparticle/three-dimensional porous carbon nitride composite material, a preparation method and application and belongs to the technical field of material preparation and photocatalysis. The ruthenium nanoparticle/three-dimensional porous carbon nitride (Ru/3DCN) composite material is prepared by using a novel solvent thermal assisted polyol reduction method, three-dimensional porous carbon nitride is adopted as a main catalyst and a substrate, ethylene glycol is adopted as a reducing agent and a solvent, CTAB (cetyl trimethyl ammonium bromide)is adopted as a surfactant, Ru nanoparticles are successfully dispersed homogeneously on surfaces of three-dimensional porous carbon nitride nanosheets, the Ru nanoparticle size is 1-2nm, more activesites can be provided, separation of photogenic electrons and holes can be promoted, and agglomeration of nanoparticles can be effectively avoided, so that the composite photocatalytic material has excellent visible catalytic hydrogen production performance, and when the load capacity of the Ru nanoparticles is 1wt.%, the maximum hydrogen production efficiency is up to 2945.47[mu] mol*h<-1>*g<-1>.

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 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.

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 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 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.

The invention discloses a broccoli polypeptide component microwave-assisted extracting and activity measuring method. The method comprises the following steps: step 100, liquid nitrogen grinding and preparation: drying broccolis in the shade, and grinding broccolis in liquid nitrogen; step 200, radiating broccolis by microwaves; step 300, separating the supernate; step 400, adding an organic solvent; and step 500, separating the broccoli polypeptide component. The provided method has the advantages that the extraction time is effectively shortened, the operation cost is reduced, the using amount of organic solvent is reduced, the method is environment-friendly, the extraction efficiency is prominently improved, and more active components are obtained.

The invention discloses a waterless cotton fabric dyeing process. The process comprises the following procedures: a. soaking a cotton fabric into a NaOH water solution; b. drying the cotton fabric by adopting hot air; c. spraying a diacetyl ethanol solution onto the cotton fabric; d. atomizing a coloring agent and spraying the coloring agent onto the cotton fabric; e. enabling the cotton fabric to stand for three hours in an environment with relative air humidity above 50%; f. aeration-drying the cotton fabric, wherein the coloring agent is a decamethylcyclopentasiloxane suspension system comprising one or a mixture of more than two of the type X of dichloro-s-triazinyl, the type K of chloro-s-triazinyl, the type KN of vinyl sulfuryl and the type M of multi-active groups. The process has the beneficial effects that the coloring agent is atomized and then sprayed onto the cotton fabric, thus avoiding the problem of low coloring agent utilization rate caused by traditional soaking, bleaching and dyeing; the process has the advantages of good dye adsorption effect, high dye uptake and dyeing uniformity.

The invention provides a bacteriostatic agent with branched polyamino acid. The bacteriostatic agent comprises branched polyamino acid, wherein the branched polyamino acid is obtained by copolymerization of two or more than two types of amino acid units; the amino acid units have structural formulas shown in a formula I. The raw materials used by the invention are various amino acids, are naturalbiological materials without toxicity and side effects respectively, is a green and environment-friendly novel bacteriostatic agent and is easily accepted by a user. Due to a branched structure of thepolyamino acid, the bacteriostatic agent can be further modified due to a large amount of active function groups, has good biocompatibility, can tear bacterial membranes to cause death of bacteria, and can not generate drug resistance after long-time use. The formula I is shown in the description.