152results about How to "Strong chemical bond" patented technology

A system and method to remove a polluting agent or contaminant, including but not limited to mercury, from the liquid phase of a process system using an adsorbent. In one exemplary embodiment, a magnetic or non-magnetic support with a chemisorbing or physisorbing sorbent is suspended in the liquid phase of a process system, under conditions in which the polluting agent binds to the adsorbent. The pollutant-bearing adsorbent may then be separated from the process system by either physical or magnetic means. The polluting agent may then disassociated from the adsorbent so the adsorbent is regenerated and capable of repeated use.

The present invention provides compositions which can be used to preserve and color wood, as well as methods of using the solution to both preserve and color wood. The composition is an alkaline solution which comprises one or more metal compounds or metal complexes and one or more cationic dyes

Disclosed is a process for making hydroxy apatite / TiO2 biological ceramic coating on titanium based medical metallic material surface, which comprises, using titanium or titanium alloy as anode, stainless steel or titanium as cathode, oxidizing titanium or titanium alloy by using DC source or DC impulse source, then using the obtained titanium or titanium alloy with deposited oxidation film as cathode, using platinum wire or platinum sheets as anode, depositing ceramic film in Hap deposition solution.

The invention discloses a composite biological material capable of injecting bioglass-calcium phosphate bone cement and a preparation method thereof. The prepared composite biological material capable of injecting bioglass-calcium phosphate bone cement is composed of solid phase powder and liquid phase, wherein, the liquid phase is monopotassium phosphate and dipotassium phosphate water solution which the concentration is 1M, and the ratio between the solid phase powder and the liquid phase is 2.0 g/ml-3.0 g/ml; the solid phase powder is composed of calcium phosphate bone cement and 45S4 bioglass in a mixed mode based on a weight ratio, wherein the addition of the 45S5 bioglass accounts for 5%-40% of the gross of the solid phase powder; and the calcium phosphate bone cement is composed of tetra calcium phosphate and anhydrous calcium phosphate dibasic in a mixed mode with a 1:1 molar ratio. The composite biological material capable of injecting bioglass-calcium phosphate bone cement and the preparation have the advantages of being capable of having good liquidity, higher mechanics performance, degradation rate and biological activity, offsetting the defects of single calcium phosphate cement (CPC) or the bioglass, and being used for bone defect recovery of an oral cavity, a skull facial portion and orthopedics.

The invention discloses a method for preparing a surface material with an anti-marine biological pollution function. The surface material with the anti-marine biological pollution function is prepared by soaking and self-assembling anti-pollution copolymer of a dopamine structure onto materials such as titanium, silicon, aluminum, iron and ceramic. The copolymer is applicable to various substances, is environmental friendly and good in anti-pollution property, and is in solid chemical bonding with a substance surface. The process is simple, and the surface material with the anti-marine biological pollution function can be prepared by only directly soaking and drying. The surface material is not only good in marine pollution resistance, but also free of toxicity or pollution, and does not influence the marine environment.

The invention relates to a supported alpha-diimine compound and an application of the supported alpha-diimine compound in olefin polymerization. The compound has the following structural formula as shown in the specification, wherein R1 and R2 are identical or different C6-C60 aromatic alkyl; R3 is H or C1-C20 alkyl; R4 is C1-C20 alkyl; R5 is C1-C20 alkoxyl or a chlorine atom; n is 1, 2, 3, 4, 5, 6 or 7; an alpha-diimine compound reacts with a carrier to be supported on the carrier in a covalent bonding manner to form the supported alpha-diimine compound; the supported alpha-diimine compound is matched with a metal compound of nickel (II) and palladium (II) to form a supported alpha-diimine metal complex; and the supported alpha-diimine compound is applied to the olefin polymerization as a main catalyst and can regulate polymerization activity, as well as a molecular chain structure, molecular weight and distribution of a polymer.

The invention discloses a method for preparing an imitative mussel functionalized fracture adhesive. The method adopts a catechol-containing structural polymer, hydroxyapatite and chitosan as raw materials, the catechol-containing structural polymer is prepared from polyethylene glycol, chloroacrylic acid and a catechol-containing structural compound, and the catechol-containing structural compound is dopamine hydrochloride. The method comprises the following steps: carrying out a condensation reaction on the polyethylene glycol and the chloroacrylic acid; dissolving the obtained condensationproduct, and reacting the condensation product with the dopamine hydrochloride to generate the catechol-containing structural polymer; weighing the chitosan, and adding the chitosan into an acetic acid solution to form an acetic acid solution of chitosan; weighing the hydroxyapatite, and adding the hydroxyapatite into the acetic acid solution of chitosan to obtain a mixed solution; and weighing the catechol-containing structural polymer and the mixed solution, and stirring and mixing the catechol-containing structural polymer and the mixed solution to obtain the adhesive. The adhesive has extremely strong adhesive property, plays a full role in bone adhesion under the wet conditions in the physiological environment, and also has very good adhesive property, high bio-safety, and good bone defect filling performance.

The invention relates to the field of polymer materials, and discloses a PA6-56 copolymerized material and a preparation method thereof. The PA6-56 copolymerized material is prepared through blend polymerization of liquid caprolactam and a water solution of pentamethylene diamine adipate, wherein the molar ratio of the liquid caprolactam to the pentamethylene diamine adipate is 7:3-9:1. The methodcomprises the following steps: mixing the liquid caprolactam, the water solution of the pentamethylene diamine adipate and other reaction raw materials according to a certain proportion, carrying outstirring in a reactor under the protection condition of inert gas, and carrying out a polycondensation reaction at a temperature of 150-300 DEG C, so as to obtain the PA6-56 copolymer material. According to the invention, PA6 monomer caprolactam is mainly copolymerized with PA56 monomer pentamethylene diamine adipate to prepare the PA6-56 copolymer material, and the material not only has the advantages of high strength, wear resistance, acid and alkali resistance of PA6, but also has better hygroscopicity and dyeability, so that better wearing comfort and more abundant color are provided to the textiles.

A simple, inexpensive method of producing in bulk a doped metal nitride powder that exhibits a high luminescent efficiency, by first forming a metal-dopant alloy and then reacting the alloy with high purity ammonia under controlled conditions in a reactor. The resulting doped metal nitride powders will exhibit a luminescent efficiency that greatly exceeds that seen in pure undoped GaN powders, doped GaN thin films, and ZnS powders.

The invention discloses modified steel slag cement, and belongs to the technical field of building materials. A preparation method of the modified steel slag cement comprises the following steps: pulverizing and sieving steel slag to obtain steel slag powder; stirring the steel slag powder and sulfuric acid for reacting, performing cyclic freezing and unfreezing, and performing filtering and drying to obtain pretreated steel slag powder; performing ball milling, stirring and mixing on potassium permanganate and the pretreated steel slag powder, and performing high-temperature calcination to obtain calcined steel slag powder; performing ball milling, stirring and mixing on calcium carbonate, aluminum powder and the calcined steel slag powder, and performing combustion reaction to obtain modified steel slag powder; and adding cement, the modified steel slag powder, modified bagasse, a silane coupling agent and water to a mixer, and performing stirring and mixing to obtain the modified steel slag cement. The modified steel slag cement provided by the invention has excellent early strength, mechanical strength and stability.

An organopolysiloxane having triazinethiol and alkenyl radicals in a molecule and a primer composition comprising the same are provided. The primer composition assists in establishing a high bond strength between metal and silicone rubber by the mechanism that the triazinethiol moieties form strong chemical bonds with a difficult-to-bond metal such as gold, silver or copper, and the alkenyl moieties are involved in silicone rubber vulcanization.

The invention relates to a field of silica gel materials, and discloses silicone resin and a preparation method thereof. The silicone resin is the silicone resin containing an alkenyl active group and having a three-dimensional mesh-like structure. The method comprises co-hydrolyzing an end-capping reagent and the silane agent containing the alkenyl functional group in the presence of an acid catalyst, adding tetrafunctional organic silicon monomer in drops, performing a hydrolysis-condensation reaction, extracting, cleaning, and distilling to obtain the silicone resin solution containing the alkenyl. The silicone resin provided by the invention not only improves adhesion, reinforcement and other aspects of performance with metal materials and inorganic materials, but also has good compatibility and dispersibility. The method for preparing the silicone resin provided by the invention uses a nontoxic and harmless extractant to substitute toluene used in prior art, and thus does not cause harm to human and pollute the environment; and the silicone resin is not easy to gel, and wide in application.

The invention discloses a special compacting agent for anti-permeability and anti-cracking concrete, and belongs to the technical field of building materials. According to the compacting agent, calcium nitrate solution, chitosan liquid, a modifying addition agent, urea and bacillus pasteurii liquid are stirred and mixed, sodium sulfate solution is added, then stirred and mixed, cooling is conducted, glutaraldehyde solution is dropwisely added, then stirred and mixed, pH is adjusted, and filtering and drying are conducted to obtain modified microcapsules; 20-30 parts of modified sodium alginatesolution, 20-30 parts of calcium bicarbonate solution, 30-40 parts of basic phenolic resin, 20-30 parts of the modified microcapsules, 20-30 parts of gelatin solution, 8-10 parts of phospholipid and8-10 parts of plant essential oil, by weight, are placed in a mixing machine, and stirred and mixed at a speed of 300-500 r/min for 40-60 min to obtain the special compacting agent for the anti-permeability and anti-cracking concrete. The special compacting agent prepared by the above technical scheme has the advantages that the crack resistance, mechanical properties and anti-permeability performance of the concrete are significantly improved.

The invention provides a preparation method of a Sb2O5/GO/carbon cloth electrode material for the negative electrode of a carbon cloth-based flexible sodium ion battery; the preparation method comprises the following steps of step 1, soaking carbon cloth in acetone for impurity removal, and then carrying out washing, positive electrode oxidation treatment, washing and drying; step 2, adding graphene oxide and antimony trichloride into absolute ethyl alcohol to obtain an antimony solution, then adding a sodium hydroxide aqueous solution into the antimony solution, and adjusting the pH value to8-12 to obtain a mixed solution, and soaking the carbon cloth pretreated in the step 1 in the mixed solution; and step 3, transferring the mixed solution obtained in the step 2 and the carbon cloth into a reaction container, and carrying out hydrothermal reaction at 150-180 DEG C, cooling to room temperature after the reaction is ended, taking out the carbon cloth, carrying out cleaning and dryingto obtain the Sb2O5/GO/carbon cloth electrode material for the negative electrode of the sodium ion battery. The Sb2O5/GO/carbon cloth sodium ion battery negative material prepared by the method of the invention shows excellent electrochemical cycling performance; and meanwhile, the preparation method is simple and novel, short in preparation period, high in repeatability and suitable for large-scale production.

The invention discloses a special paper tube adhesive for paper and belongs to the technical field of binding agents. The special paper tube adhesive for the paper is prepared by the following steps:stirring and mixing nano silicon dioxide, a silane coupling agent and an ethanol solution and reacting; then filtering, washing and drying to obtain modified nano silicon dioxide; then carrying out ultrasonic dispersion on the modified nano silicon dioxide and absolute ethyl alcohol to obtain a modified nano silicon dioxide dispersed solution; mixing glass fibers and the modified nano silicon dioxide dispersed solution and immersing; then drying the immersed glass fibers until the weight is constant; mixing the immersed glass fibers and a dopamine solution and immersing; then drying the immersed glass fibers until the weight is constant, so as to obtain modified glass fibers; stirring and mixing polyvinyl alcohol, a cyclodextrin derivative and water; then adding polyvinyl acetate emulsion,cellulase, the glass fibers and polystyrene emulsion, and stirring and mixing to obtain the special paper tube adhesive for the paper. The special paper tube adhesive for the paper, which is preparedby the technical scheme, has the characteristics of excellent bonding performance and has a wider application and development field.

There is provided a material having a low refractive index that exhibits a sufficiently low refractive index without deteriorating the strength of the cured film produced therefrom, and that can be cured by an active energy ray that is applicable for a resin base material that is not desired to be exposed to heat. A curable composition comprising: a siloxane oligomer (a) containing a radically polymerizable double bond obtained through hydrolysis and condensation of alkoxysilanes containing at least an alkoxysilane A of Formula [1] and an alkoxysilane B of Formula [2] in an amount of 100 parts by mass; inorganic fine particles (b) in an amount of 10 parts by mass to 1,000 parts by mass; and a polymerization initiator (c) generating a radical upon active energy ray irradiation in an amount of 0.1 parts by mass to 25 parts by mas

R¹_aSi(OR²)_4-a  [1]

R³_bSi(OR⁴)_4-b  [2]

a cured film produced from the composition, and a laminate comprising a low refractive index layer produced from the composition.

A dual color sprayed on composite ceramic coating configured and formulated to protect fireside boiler tubing while also acting as a visual inspection aid. The coating is an environmentally safe, non-reactive, water soluble composite ceramic that will withstand operating temperatures up to 2000° F. (1093° C.). This coating is ideal for fluidized bed boilers and coal fired utility boilers experiencing tube erosion, corrosion and slagging. This sprayed-on ceramic coating system allows for fast application rates reducing equipment down time. The composite ceramic coating is a high solids system that will withstand severe thermal cycling from −300° F. (−185° C.) to 1600° F. (871° C.). This composite system is applied in two distinct colors to enable easy visual inspection of coating thickness.

The invention discloses a titanium alloy surface collagen coating loaded with antibacterial polypeptides and a preparation method of the coating. An electrostatic spraying technology is also used, thecollagen coating loaded with the antibacterial polypeptides is simultaneously constructed on the surface of porous titanium alloy, the process is simple and convenient, and the spraying efficiency ishigh. Dopamine is oxidized to form polydopamine which has good adhesion, combination of the coating and a titanium alloy matrix can be enhanced, the coating is not likely to fall off, and the coatingcan coexist with a micro-arc oxidation structure on the surface of the porous titanium alloy; meanwhile, the antibacterial polypeptides are loaded on the surface of the titanium alloy; the collagen coating loaded with the antibacterial polypeptides can induce generation of bones and cartilage, more stable chemical bonding and higher biological activity are provided for the titanium alloy implants, the collagen coating is more beneficial for ingrowth of new bone issue, a good antibacterial property is achieved, the infection risk caused by implantation of the titanium alloy can be effectivelyreduced, and the implantation effect is improved.