61results about How to "Tight molecular structure" patented technology

The invention belongs to the chemical material technology field, providing an epoxy-organosilicon composition which does not comprises solvent, and can automatically stratified and solidified, which comprises two components, wherein the first component is formed by 100-0 parts of epoxy resin, 0-100 parts of polyether modification epoxy resin and 20-240 parts of organosilicon resin, and the second component comprises 5-40 parts of amine curing agent, 1-16 parts of organosilicon cross linker and 0-0.05 parts of organosilicon cross-linking catalyst, wherein the parts which are added are parts by weight. The epoxy-organosilicon composition utilizes the exclusion principle between epoxy resin and organosilicon resin, and can automatically stratify in the film forming process, and the epoxy resin is deposited to the bottom and the organosilicon is exposed on the outer surface. The composition does not comprises solvent, and has the advantages of non toxic and environmental protection, and solidified products share the characteristics of distinct adhesive force of epoxy resin and low weatherability and surface property of organosilicon.

The invention provides an antifouling coating which can be self-layered and solidified, has low surface energy and consists of component A and component B, wherein, according to the weight formula, the component A consists of 50-100 parts of epoxy resin, 0-50 parts of epoxy-capped esserbetol, 60-240 parts of polymethyl siloxane resin, 0-20 parts of pigment, and 0-70 parts of organic solvent; component B consists of 25-40 parts of amine curing agent, 2-16 parts of organic silicone cross-linking agent, 0-0.5 part of organic silicon-crosslinked catalyst and 0-5 parts of organic solvent. The coating uses a principle that the epoxy resin and the organic silicon resin are incompatible in each other, and can be automatically layered during the film-forming process; and the epoxy resin deposits at the bottom and the organic silicon resin is exposed on the external surface. The antifouling coating with low surface energy has the characteristics of excellent adhesion of epoxy resin and low surface energy of the organic silicon and has certain antifouling effect.

The invention provides amnion eye drops for curing cornea alkali burn and a preparation method thereof. The preparation method comprises the steps of: taking amnion homogenate supernate as main activeconstituent; and adding with trehalose, hyaluronic acid or salt thereof, heparin or salt thereof, sodium chloride, benzalkonium bromide, vitamin, etc. The eye drops belongs to an ophthalmology drug delivery system, has a good lubrication function, and can provide a conglutination-resistant surface; and the drug delivery system is added with the other pharmacological active constituents, thereby being capable of increasing the viscocity of medical liquid, prolonging the residence time of the drug in eye surface, improving the bioavailability of the drug, reducing the side effect of the drug, reducing the drug irritation, and having a slow release effect. The amnion eye drops is an effective ophthalmology new drug, and has good clinic application foreground.

The invention belongs to the technical field of anticorrosive paint and discloses flexible geopolymer-based anticorrosive paint and a preparation method and application thereof. The flexible geopolymer-based anticorrosive paint comprises a component A, a component B and a component C. The component A is prepared from, by weight, 15-80 parts of a geopolymer gel base material and 20-85 parts of pigments and fillers. The component B is prepared from, by weight, 40-85 parts of an alkali activator, 0-15 parts of a curing regulator, 0-6 parts of a rheological modifier and 7-45 parts of water. The component C refers to a functional toughening additive. The lexible geopolymer-based anticorrosive paint has advantages that defects of high brittleness and proneness to cracking failure of traditionalpolymer paint are overcome, and excellent flexibility of a material is achieved; in addition, the paint contains zero VOC and is low in toxicity and environmentally friendly, a coating is compact andstable, excellent corrosion resistance, permeation resistance and durability are achieved, and the flexible geopolymer-based anticorrosive paint is applicable to steel structure and concrete surface protection of infrastructures of cultural relics, buildings, municipal administration, roads, subways and the like.

Disclosed is a water-based polyaniline composite metal corrosion-proof material and method for preparation, wherein the material is prepared from the following raw materials (by weight portions): sodium-based montmorillonite 3-8 parts, polystyrolsulfon acid 3-9 parts, deionized water 64-110 parts, phenylamine 1-4 parts, ammonium persulphate 3-9 parts, water-based epoxy resin emulsion 50-60 parts, and water-based epoxy resin curing agent emulsion 20-35 parts.

The invention provides a heat exchanger with an anticorrosion and scale-preventing coating and a manufacturing process thereof, and relates to a heat exchanger with a coating in the chemical engineering field. The anticorrosion and scale-preventing coating comprises an inner connection layer and an outer nano-titanium layer. Anionic surfactants and metal elements with high thermal conductivity are added into the connection layer and achieve the effects of transferring heat and preventing the outer layer from being disengaged. The nano-titanium layer is smooth in surface, water scale accumulation is not likely to happen, and the anticorrosion and scale-preventing functions are achieved. The heat transferring portions of various heat exchangers can be coated with the coating, the phenomenon that a heat exchange tube or a heat exchange plate is prone to corrosion and scale formation can be reduced, and the coating on the surface is not liable to being disengaged; meanwhile, heat exchange efficiency can be improved, and the service life of the heat exchanger is prolonged.

The invention relates to single-component water-based black paint for an automobile and a preparation method thereof. The single-component water-based black paint for the automobile is prepared by mixing three components A, B and C according to the weight ratio of 4 to (4 to 7) to (0.05 to 0.2), wherein the component A is prepared from the following components in parts by weight: 3 to 7.5 parts ofhigh-pigment carbon black, 15 to 35 parts of water, 3 to 10 parts of methyl ethylene glycol, 0.3 to 2.5 parts of base material wetting agent and 1.5 to 7.5 percent of dispersant; the component B is an aliphatic polyurethane dispersion body; the component C is a rheological agent. According to the single-component water-based black paint for the automobile, the compatibility problem of raw materials is remarkably improved, and the flowability, storage stability, luster, blackness and a blue phase are improved.

The invention relates to a recycled concrete with highly effective damping property, which includes screening of fine aggregate and preprocessing of coarse aggregate. According to a weight ratio, each component is weighed; all of highly effective water-reducing agent and carbon nanofibers and half weight of water are poured into an agitator and agitated at high speed, so that suspension is obtained; the other half of water, thinner and polymer emulsion are mixed, so that a mixed solution is obtained; all of cement, fine aggregate and coarse aggregate are poured into an agitator and agitated uniformly, so that a mixture is obtained; the suspension prepared in Step 4 and the mixed solution in Step 5 are added into the mixture uniformly agitated in Step 6 and agitated sufficiently, so that the recycled concrete is obtained. The invention has the advantage that while sufficiently utilizing discarded concrete, the invention also can effectively increase the physicomechanical properties of the recycled concrete.

The present invention provides an organic light emitting device, a manufacturing method thereof and a display device. In the organic light emitting device provided by the present invention, a first inorganic thin film entirely covers a pre-encapsulation layer and an organic light emitting unit, and the first inorganic thin film has a denser molecular structure compared with the pre-encapsulation layer, thereby more effectively preventing water and oxygen from invading the organic light emitting unit via the pre-encapsulation layer to influence the service life of the organic light emitting unit.

The invention discloses a composite film, a preparation method thereof and a plastic film product. The composite film comprises a heat sealing layer, a bonding layer and a supporting layer which are sequentially stacked, wherein based on the mass of the heat sealing layer, the heat sealing layer is prepared from a heat sealing layer raw material comprising 48-100 parts by mass of PBAT, 0-30 parts by mass of a filler, 0-20 parts by mass of a biodegradable material and 0-2 parts by mass of a processing aid, the bonding layer is prepared from a bonding layer raw material comprising bonding resin, the bonding resin is copolyester containing an active group, and the active group is a carboxyl or anhydride group; wherein the supporting layer is prepared from the following raw materials in parts by mass: 68-100 parts of thermoplastic modified polyvinyl alcohol, 0-20 parts of filler, 0-10 parts of biodegradable material and 0-2 parts of processing aid. The composite film provided by the invention has good mechanical properties, layers are not easy to separate, and the composite film has good application prospects.

The invention discloses a polysilicic acid aluminum sulfate flocculating agent, a preparation method and application, and belongs to the technical field of purification of waste water in an oil and gas field. The preparation method for the polysilicic acid aluminum sulfate flocculating agent comprises the steps that 1) sodium silicate is dissolved in water to obtain a solution with the concentration of 0.2-0.5 mol/L, the p H value of the solution is 2.1-5, and the solution is stirred for polymerization for 10-30 minutes at the indoor temperature to obtain polysilicic acid; 2) according to molar ratio, aluminum sulfate and ferrous sulfate are added, (Al+Fe)/Sl=0.5-2.2, Al/Fe=0.5-2.2, the mixture is stirred for polymerization for 10-30 minutes at the indoor temperature and subjected to standing for curing for 20-28 hours, and the polysilicic acid aluminum sulfate flocculating agent is obtained. The flocculating agent is specially applied to waste liquid treatment for drilling wells in the oil and gas field, the flocculent precipitate effect is good, single dosage is added, the addition amount is small, the COD removing rate is high, and after treatment, the COD index of waste water is below the national emission standard.

The invention relates to a medical dressing, in particular to sodium heparin loaded hydrogel slow-release plaster which comprises a fixed layer, a backing layer and a hydrogel functional layer, wherein the backing layer and the hydrogel functional layer are sequentially arranged on the fixed layer, and the hydrogel functional layer is prepared from hydrophilic high-molecular compounds, sodium heparin and transdermal penetration enhancer water solution through high-energy ray radiation or freezing and thawing cycle or combination of high-energy ray radiation and freezing and thawing cycle. The hydrogel slow-release plaster has the advantages that sheet solid hydrogel materials synthesized by the hydrophilic high-molecular compounds with high biological safety have high biological safety, water content and the like, a molecular structure is compact, water desorption rate can be controlled, service time is prolonged, in addition, the hydrogel slow-release plaster prepared from the sheet solid hydrogel materials serving as a medicine slow-release component is simple to operate and convenient to use and can be timely removed if discomfort and adverse reaction occur, and deterioration of adverse reaction is avoided.

The invention belongs to the technical field of easily released release film, and in particular, relates to an anti-static release film for a high-stickiness adhesive tape. The anti-static release film includes a thin film base material and a silicone oil release agent attached to the surface of the base material, wherein the silicone oil release agent is prepared from the following raw materials: vinyl silicone oil, hexamethyl-disilazane, epoxy acrylate resin, silica particles, a platinum catalyst, cyanoacrylate resin, 2-hydroxy ethyl acrylate, fumed silica, polyethylene glycol, and ethyl acetate. Compared with the prior art, the anti-static release film has the following advantages that a variety of release agents are mixed and are subjected to reaction to obtain the silicone oil release agent having close molecular structure and stable performance; the silicone oil release agent makes tight and firm contact with the thin film base material, is not easy to fall off and has the release force of 4-5 g/in; the anti-static release film makes contact with the high-stickiness adhesive tape, the contact area is small, separation is easier, the surface of the high-stickiness adhesive tape has no residues after separation, the yield rate of products is improved, and the anti-static release film is suitable for promotion and use.

The invention discloses a method for improving the transparency degree of a starch liquidation product, and belongs to the field of biological modification starch. The molecular structure of a starchliquidation product is changed through adding starch branching enzymes from rhodothermus obamensis, so that a small branch chain and a higher branching degree are realized; the goals of improving thetransparency and the stability are achieved. The method comprises the following steps of dissolving the starch liquidation product into water according to a certain concentration so as to prepare thestarch liquidation product water solution; the starch branching enzymes are added for reaction for a period of time at a certain temperature so as to improve the transparency of the starch liquidationproduct in the storage process; a novel idea is provided for improving the stability of the starch liquidation product; great potentials and application prospects are realized.

The invention discloses a glue liquid used for an aluminum base board of a high-heat-conductive copper-clad board. The glue liquid includes, by weight, 100 +/- 2 parts of epoxy resin, 12.5 +/- 0.1 parts of an amine curing agent, 0.2 +/- 0.001 parts of a curing accelerator, 75 +/- 1 parts of a solvent, 5.4 +/- 0.1 parts of a coupling agent, and 350 +/- 2 parts of inorganic filler, wherein the epoxy resin includes 70 +/- 2 parts of phosphorus-containing halogen-free epoxy resin or bisphenol A type low-bromine epoxy resin and 30 +/- 2 parts of zinc oxide modified bisphenol A type epoxy resin. The preparation method includes the following steps: 1) uniformly mixing the amine curing agent and the curing accelerator, adding the mixture to the solvent, continuously stirring the liquid for 2 h to dissolve the mixture completely; 2) adding the coupling agent, in three times, into a glue blending tank, wherein when one batch of the coupling agent is added, the coupling is stirred for 20 min, and then the next batch is added; 3) after the coupling agent is completely added, adding all of the inorganic filler, and uniformly stirring the mixture for 30 min completely; and 4) adding the epoxy resin to the glue blending tank, and then high-speed-stirring the mixture for 4-6 h until the glue liquid is completely aged. The glue liquid has high heat resistance and heat conductivity.

The invention discloses a surface coating for a building aluminum alloy template capable of preventing concrete adhesion and a preparation method of the surface coating. The surface coating for the building aluminum alloy template capable of preventing concrete adhesion is prepared from the following raw materials in parts by mass: 15 to 30 parts of modified epoxy resin, 5 to 15 parts of modifiedtitanium dioxide, 15 to 25 parts of polytetrafluoroethylene powder, 30 to 50 parts of ethyl acetate, 5 to 10 parts of N-methyl-2-pyrrolidone, 0.5 to 3 parts of a curing agent and 0.5 to 3 parts of a defoaming agent. The anti-sticking performance, the chemical stability, the heat resistance, the mechanical performance and other performance of the coating are improved by blending the modified epoxyresin, the modified titanium dioxide and the polytetrafluoroethylene powder; the epoxy resin not only has excellent adhesion to metals, but also has lower surface energy after film formation by modifying the epoxy resin, thereby being beneficial to the anti-sticking performance of the coating.

The invention relates to marine antifouling paint, i.e., waterborne graphene paint and a preparation method thereof. The paint is prepared by evenly mixing a component A with a component B containinggraphene according to a mass percent of (1-2) to (2-4). The paint can effectively solve the problem that marine microorganisms adsorb on the surfaces of ships.

The invention discloses a glass adhesive and a preparation method thereof. The glass adhesive is prepared from the following components in percentage by weight: 30 to 60 percent of polyurethane resin, 20 to 50 percent of an acrylate monomer, 10 to 30 percent of N, N-dimethylacrylamide, 1 to 5 percent of organic silicon and 1 to 5 percent of a photoinitiator. According to the invention, organic silicon with reaction activity is added in a polymerization reaction of acrylic resin, so that the organic silicon is directly grafted on molecular chains of acrylic ester, polyurethane resin and N, N-dimethylacrylamide in the polymerization reaction process, and the organic silane modified acrylic resin with a cross-linked network structure is obtained, so that the bonding performance, the bonding speed, the high temperature resistance, the weather resistance, the acid and alkali resistance and the yellowing resistance of the adhesive are greatly improved; and the N, N-dimethylacrylamide and the acrylate monomer are copolymerized to generate a polymer with a high polymerization degree, and then the adhesive property of the adhesive is further synergistically improved.

The invention relates to the field of separation membranes, particularly to a reverse osmosis membrane and a preparation method thereof, and applications of the reverse osmosis membrane in water treatment. The reverse osmosis membrane comprises a support layer and a separation layer, wherein the support layer and the separation layer are adhered to each other, the separation layer is a cross-linked layer obtained by crosslinking sulfonated polyether sulfone having a structure represented by a formula (I) and sulfonated polyether sulfone having a structure represented by a formula (II), R1-R4 are respectively and independently H or C1-C4 alkyl, R1-R4 are not simultaneously H, R5-R8 are respectively and independently H or -SO3M, R5-R8 are not simultaneously H, and M is an alkali metal. According to the present invention, by crosslinking the sulfonated polyether sulfone in the separation layer of the polyamide reverse osmosis membrane, the molecular structure of the separation layer of the obtained reverse osmosis membrane is dense, such that the salt retention rate and the chlorine resistance of the reverse osmosis membrane are significantly improved; and the preparation method is simple, and is suitable for large-scale production. The formulas I and II are defined in the specification.

The invention relates to an insulator vacuum pugging method and an insulator vacuum pugging device. A center hole of a three-blade tail end spiral blade of a pugging machine and a tapered end of a tapered pugging bowl body are respectively provided with 1-2 plane bearing(s), and the tapered pugging bowl body is connected with the three-blade tail end spiral blade of the pugging machine by a high-intensity pull chain. After the insulator vacuum pugging method and the insulator vacuum pugging device are used, the tapered pugging bowl body is always under the suspension status at an outlet of the pugging machine through the pull chain, when the pugging machine is started up to run, the pug can uninterruptedly and evenly move to a tapered pugging machine bowl body from the periphery. Therefore, the tapered pugging machine bowl body can be always arranged in the middle of the outlet of the pugging machine, a hollow pug section inner hole which is extruded under vacuum can never be eccentric, and ripples can not be available. The pug section pug extruded by the method is even in density, and compact in molecular structure, a formed semi-product is difficult to bend, and a sintered product can not be deformed.

The invention relates to a mono-component aqueous epoxy emulsion used for a priming paint and a preparation method thereof. The mono-component aqueous epoxy emulsion used for the priming paint comprises 100 parts of water, 20-40 parts of epoxy resin monomer, 10-20 parts of styrene monomer, 1-10 parts of acrylic acid monomer, 10-30 parts of butyl acrylate monomer monomer, 1-10 parts of methacrylic acid monomer, 10-30 parts of diluents, 10-20 parts of neutralizer and 1-10 parts of free radical polymerization initiator. The epoxy resin monomer has strong cohesive force, a molecular structure is compact, mechanical properties of a reaction system is increased, and massive reactive groups with strong polarity are existed in a mixing system of the styrene monomer, the acrylic acid monomer, the butyl acrylate monomer monomer, and the methacrylic acid monomer, so that adherence capability of epoxy resin cure system to the material is greatly increased.

The invention relates to a preparation method for high-strength high-thermal-stability water-based varnish, and belongs to the technical field of synthetic resin preparation. According to the preparation method, graphene oxide is prepared and added into the varnish, graphene has a compact molecular structure, so that the varnish can have good mechanical strength, meanwhile, a large amount of hydrophilic epoxy groups such as hydroxyl groups and carboxyl groups are introduced into the graphene oxide, acrylate is modified by using organic silicon, so that organic silicon components are combined on acrylate molecular chains, the organic silicon can be combined with polyurethane molecular chains so as to generate Si-C bonds, so that all layers of the polyurethane molecular chains are connectedto achieve a bridge effect, the molecular chains of each layer are mutually staggered, the molecular structure is more compact, so that the thermal stability of the varnish is improved, meanwhile, thegraphene oxide has good thermal conductivity, the heat dissipation effect of the varnish is enhanced through evaporation and heat absorption of free water, and therefore the thermal stability of thevarnish is further improved and a wide application prospect is achieved.