17 results about "Polyacrylic acid" patented technology

The invention discloses a building method of a molecularly imprinted fluorescent probe, wherein the material is Mn:ZnS quantum dot-molecularly imprinted polymer composite microsphere, which is formed by Mn:ZnS quantum dot, a styrene-polyacrylic acid copolymer and template molecule thiabendazole in a copolymerization manner under the ultrasonic action, so as to form a sensing probe with specific recognition after the template molecule thiabendazole is removed. The building method has the advantages that the molecularly imprinted fluorescent probe is designed and built by the Mn:ZnS quantum dot as a fluorescent sensor unit by using a molecular imprinting technique on the basis of the fluorescence resonance energy transfer mechanism; the Mn:ZnS quantum dot and the benzimidazole are subjected to fluorescence resonance energy transfer when the template molecule thiabendazole enters a hole of the Mn:ZnS quantum dot-molecularly imprinted polymer composite microsphere, thus resulting in quenching of emitted orange fluorescent light. Therefore, benzimidazole in the water can be specifically identified by an output change of a fluorescent signal.

The invention belongs to the field of optical thin film materials and particularly relates to a method for preparing a high-hardness antireflection film on the basis of hollow silicon dioxide. The method takes tetraethoxysilane as the raw material, polyacrylic acid as a templating agent, 2-isopropoxy ethyl alcohol and methyl alcohol as solvents together, and ammonium hydroxide as a catalyst to prepare a hollow SiO2 coating film sol through a template method, and a two-sided thin film is plated on a glass substrate through a dip-coating method. After being calcined at 550 DEG C, the antireflection film is obtained, the average light transmittance is more than 98% within the light transmittance wavelength range of 400-800 nm, and the hardness is more than 4H.

The invention provides a general fodder quality modifier for common aquatic products and a preparation method thereof. The fodder quality modifier comprises the following components, by mass: 85 to 95parts of attapulgite and 5 to 15 parts of an additive. The additive comprises alpha-starch, edible fatty glyceride, lignosulfonate, propylene glycol, polyacrylic resin and sorbitol fatty acid ester and specially comprises the components, by mass: 2 to 8 p arts of alpha-starch, 1 to 5 parts of sodium alginate, 1 to 5 parts of edible fatty glyceride, 1 to 6 parts of lignosulfonate, 1 to 5 parts ofpropylene glycol, 2 to 8 parts of polyacrylic resin, and 1 to 6 parts of sorbitan fatty acid ester. The general fodder quality modifier has characteristics of being non-toxic, tasteless, non-irritant,not easy to absorb moisture and the like can absorb aflatoxin, zearalenone and vomitoxin in the fodder. Meanwhile, the strength of the fodder and the stability of the fodder in water can be enhanced;and the powder-to-material ratio in the production, storage and transportation processes is reduced.

The invention belongs to the technical field of release films, and particularly relates to a preparation method of a PET release film. The preparation method comprises the following steps: (1) preparation of an anti-scratch agent: a, preparing amino-modified silicon dioxide nanoparticles; b, preparing a maleic anhydride polyacrylate precipitate; and c, carrying out a grafting amidation reaction on the amino-modified silicon dioxide nanoparticles and the maleic anhydride polyacrylate precipitate; (2) preparation of a release agent: taking organic silicon resin, polyvinyl alcohol, simethicone, a photoinitiator and the anti-scratch agent, and carrying out stirring and uniform mixing; and (3) preparation of the film: performing corona treatment on a PET base film, coating a corona surface with the release agent, and performing radiation curing by using ultraviolet light, thereby obtaining the film. The method is simple in process and easy to operate, and the PET release film prepared by the method has good scratch resistance and wear resistance, moderate peel strength, certain antistatic property and good stability.

The invention discloses a new method for functional modification of poly(beta-pinene) resin, and particularly relates to a new method for carrying out functional modification on poly(beta-pinene)resin through a sulfydryl-double bond addition reaction. The method includes the steps that a photoinitiator is adopted to initiate the addition reaction of double bonds on poly(beta-pinene) molecular chains and a sulfhydryl compound, polar functional groups carried by the sulfhydryl compound are introduced onto the poly(beta-pinene) molecular chains, and functionally-modified poly(beta-pinene)resin is obtained. Due to the introduction of the polar functional groups, on one hand, the compatibility of poly(beta-pinene) and common polyacrylic resin can be improved, and thus the tackifying effect of poly(beta-pinene) on polyacrylic resin can be improved; on the other hand, the traditional polymer poly(beta-pinene) can be endowed with new functions, the application field of the terpene polymer can be widened, and efficient utilization of the natural resource beta-pinene can be promoted; for example, after beta-pinene is modified with mercaptopropionic acid or mercaptoacetic acid, a product can be self-emulsified in water to form nano-particles and is expected to be applied to drug delivery systems.

The invention discloses a polyacrylate grafted graphene oxide plugging agent and an oil-based drilling fluid. A plugging agent used by the oil-based drilling fluid is polyacrylate grafted graphene oxide, and the polyacrylate grafted graphene oxide plugging agent is prepared from the following synthetic raw materials: graphene oxide, an amino silane compound, an acrylate compound and an acrylamide compound. The drilling fluid comprises the polyacrylate grafted graphene oxide blocking agent disclosed by the invention. The polyacrylate grafted graphene oxide is used as a blocking agent, the particle size of the polyacrylate grafted graphene oxide is approximately distributed between 60 nm and 1200 nm, nano apertures in a shale stratum can be effectively blocked, and therefore the well wall can be effectively stabilized, and collapse can be prevented; the plugging agent has small influence on the performance of the drilling fluid and is beneficial to reducing the filter loss of the drilling fluid, and the oil-based drilling fluid used by the plugging agent has good rheological property, water loss wall-building property, plugging property and the like under the shale formation condition.

The invention discloses a novel moisture-curing flame-retardant polyurethane hot melt adhesive and a preparation method thereof. The novel moisture-curing flame-retardant polyurethane hot melt adhesive is characterized by being prepared from 1-20 parts of polyether diols, 1-35 parts of liquid polyester diols, 1-40 parts of flame-retardant polyether glycol, 1-35 parts of crystalline polyester diols, 1-35 parts of an isocyanate-containing modified polyacrylic acid fluorosilicone copolymer, 1-50 parts of isocyanate, 0.01-1 part of a catalyst, 0.01-1 part of an antioxidant and 0.1-2 parts of a silane coupling agent. The isocyanate-containing modified polyacrylic acid fluorosilicone copolymer is synthesized firstly, the chemical structure of the copolymer is poly(hexafluorobutyl acrylate-random-monomethacryloxypropyl terminated polydimethylsiloxanes-random-methyl acrylate-random-isocyanatoethyl methacrylate, the copolymer is added to a polyurethane prepolymer and subjected to condensation polymerization, a fluorosilicone-containing acrylate copolymer chain segment and a reaction type flame retardant are introduced and have an efficient synergistic effect, and therefore, comprehensive chemical resistance, oil resistance, water resistance and flame retardance are improved.

The invention provides diacetyl tartaric acid ester of mono(di)glyceride fried bread stick bulking agents. The diacetyl tartaric acid ester of mono(di)glyceride fried bread stick bulking agents are characterized in that the fried bread stick bulking agents include, by weight, 10-20 parts of diacetyl tartaric acid ester of mono(di)glyceride, 30-50 parts of sodium bicarbonate, 15-26 parts of octadecyl amine acetate, 1-2 parts of sodium benzylnaphtthalene sulfonate, 1-2 parts of polyethylene wax, 1-2 parts of chlorinated paraffin, 1-2 parts of lecithin, 1-2 parts of calcium chloride, 1-2 parts of sodium polyacrylate, 1-2 parts of ammonium chloride, 1-2 parts of alkyl phosphoric acid sodium salt, 1-2 parts of halogen phosphate and 1-2 parts of alkyl polyoxyethylene ether. The diacetyl tartaric acid ester of mono(di)glyceride fried bread stick bulking agents have the advantages that raw materials are easy to get, and the bulking agents are low in cost, free of aluminum, friendly to environment, convenient to use and good in effect.

The invention discloses a nanometer titanium dioxide dispersion emulsion and a preparation process thereof. According to the method, sodium polyacrylate, polyacrylic acid and sodium hexametaphosphateare used as dispersants, and are pre-dispersed on a high-speed dispersion machine according to a reasonable ratio, and grinding is performed for a certain time by using a nanometer grinding machine toobtain the stable nanometer titanium dioxide dispersion emulsion. The nanometer titanium dioxide dispersion liquid prepared by the method has characteristics of adjustable solid content, highly stable solution, neutral PH value, non-toxic and easily-available dispersing agent, D90 particle size of lower than 80 nm and excellent photocatalysis effect, and can be applied to various fields, and themethod is suitable for large-scale production.

The invention discloses a high-thermal-conductive composite material and a preparation method thereof. The composite material is prepared from the following raw material components in percentage by mass: 10 to 70% of thermal-conductive filler, 10 to 50% of a polymer matrix, and 1 to 40% of calcium carbonate. The preparation method comprises the following steps: taking a calcium chloride solution in a container, dropwise adding a polyacrylic acid solution, magnetically stirring at room temperature until uniform, then adding the thermal-conductive filler, continuously stirring, ultrasonically mixing until uniform and then adding a sodium carbonate solution, standing for several hours, then performing centrifugal separation to remove supernatant liquid to obtain a flexible composite material, moulding and then performing vacuum freeze drying, then performing high-temperature ablation under inert atmosphere to form a three-dimensional thermal-conductive skeleton structure, and finally performing vacuum assisted perfusion of the polymer matrix for curing and moulding. The thermal conductivity of the composite material disclosed by the invention can reach 10 Wm<-1>k<-1> or above, and the composite material can be used as heat dissipating materials for high-power devices.

The invention provides a ceramic coating with corrosion resistance, and relates to the technical field of ceramic coatings. The ceramic coating comprises the materials in parts by weight: 13-28 partsof a pure acrylic elastic emulsion, 20-28 parts of epoxy resin, 15-27 parts of polyethylene micro-powder wax, 9-12 parts of high pigment carbon black, 17-23 parts of sodium silicate, 2-8 parts of an anti-aging agent, 5-12 parts of succinic anhydride, 14-23 parts of polyacrylic acid, 2-6 parts of phenol-formaldehyde resin, 18-26 parts of polytrifluorochloroethylene, 14-25 parts of powder ethylene-propylene-diene monomer, 18-25 parts of polyphenylene sulfide, 2-5 parts of carbon fibers, 4-8 parts of copper oxide, 2-5 parts of kaolin, 1-3 parts of zeolite powder and 3-8 parts of an extinction agent. The ceramic coating has the beneficial effects that the corrosion resistance of the ceramic coating can be strengthened and the performance is good.

The invention relates to the field of composite, in particular to a high-strength PVC (polyvinyl chloride) pipe. The pipe comprises raw materials in parts by weight as follows: 60 parts of PVC resin, 26 parts of polyacrylate, 7 parts of a stabilizer, 5 parts of a foaming agent and 2 parts of an anti-ageing agent. Ageing of the PVC pipe can be effectively prevented, and the PVC pipe has high toughness, large elongation, high normal-temperature impact resistance and tensile strength and better sound insulation effect, is made of lighter materials and is pressure-resistant and impact-resistant.