44results about How to "Overcome the problem of easy reunion" patented technology

The invention discloses transparent nanometer zirconium dioxide liquid phase dispersoid, and a preparation method and application thereof. The dispersoid comprises liquid phase media and nanometer zirconium dioxide particles, wherein the nanometer zirconium dioxide particles are uniformly dispersed into liquid phase media; the solid content of the dispersoid is 1 weight percent to 50 weight percent; the one-dimensional dimension of the nanometer zirconium dioxide particles is 1 to 12nm; the liquid phase media are water, organic solvents, a mixture of water-soluble organic solvents and water, or a mixture of different organic solvents. The nanometer zirconium dioxide in the product has high crystallinity degree; the particle diameter is small; the distribution is uniform; any surfactant is not contained; the purity is high; the dispersion effect is good; no sedimentation occurs after the still standing for 6 months or longer. The product prepared by the method does not need any treatment, and is directly the transparent nanometer zirconium dioxide liquid phase dispersoid; any substance does not need to be added for dispersion assistance; the problems of easy agglomeration, poor dispersibility and poor optical performance of the composite material are solved; higher application performance and wider application ranges are given to the product.

The invention relates to magnetic elastomer composite materials, in particular to a Fe3O4@GO / NR magnetic elastomer composite material and a preparation method, and solves the problem that magnetic particles in existing materials are nonuniform in dispersion, prone to gathering, unstable in structural performance and low in mechanical performance. The preparation method includes: 1), adopting a chemical co-precipitation method to prepare Fe3O4 water-base magnetic liquid; 2), adopting an improved Hummers method to prepare graphite oxide, and preparing GO suspension liquid; 3), preparing stabilizer, vulcanizer and promoter dispersoid; 4), adopting an emulsion blending method to prepare the Fe3O4@GO / NR magnetic elastomer composite material. The Fe3O4@GO / NR magnetic elastomer composite material and the preparation method have the advantages that a, vulcanizing temperature is low, preparation process is simple, dispersity of the magnetic particles and GO is improved, the problem of proneness to gathering is solved, and the composite material is stable in structure; b, graphene oxide serves as reactive enhanceosome, so that mechanical performance is improved, the magnetic particles are stabilized, sedimentation and aggregation are prevented, and mechanical performance and magnetic performance are improved; c, the composite material can display excellent elastic mechanical performance, magnetic performance, heat resistance and solvent resistance under low concentration.

The invention discloses an iron phthalocyanine / activated carbon Li / SOCl 2 The preparation method of the positive electrode catalyst material of the battery comprises: taking phthalic anhydride and activated carbon and mixing them to obtain a mixture; taking urea, ammonium molybdate and ferrous ammonium sulfate hexahydrate and mixing them with the mixture, grinding them, then putting them into a ceramic crucible and Put it in a muffle furnace for sintering to obtain a sintered product; cool to room temperature, soak the sintered product, wash and filter, and dry to obtain iron phthalocyanine / activated carbon Li / SOCl 2 Catalyst material for battery positive electrode. The method has the advantages of good product dispersion, high purity, short synthesis cycle and low cost.

The invention relates to a wire saw for cutting hard and fragile materials and a manufacturing method thereof. The wire saw is fixed with an grinding material on a core wire through a bonding agent and is characterized in that the bonding agent consists of an inner layer UV resin bonding agent and an outer layer heat reactive resin bonding agent; and the grinding material is evenly and continuously distributed in a monolayer mode around the core wire, partial grinding material is embedded in the UV resin bonding agent, other partial grinding material is exposed outside the heat reactive resinbonding agent to form an exit lip, and the rest part is enwrapped by the outer layer heat reactive resin. The grinding material adopts a diamond or CBN adopting surface metal plating; and the core wire adopts a copperized music wire. The manufacturing method is performed continuously and quickly according to the following steps: under the traction of a driving device, setting out the core wire continuously through a wire plate, surface preparation, cleaning, drying, coating with the inner layer UV resin bonding agent, grinding material cementation, UV curing, coating with the outer layer heatreactive resin bonding agent, thermocuring and drawing in a cable to form a plate. The wire saw and the method solve the problem of driving aspects before cured resin is completely cured, and can effectively solve the problem that the grinding material in the prior art is easy to agglomerate.

The invention relates to a preparation method of a carboxymethyl chitosan modified graphene oxide composite material; the preparation method includes the steps: (1) under the action of activating agents EDC and NHS, allowing graphene oxide dispersed in water to generate chemical bond connection with CMC, carrying out a reaction for 24 h at room temperature, to obtain a suspension with relatively good micro-particle dispersity, dialyzing, freeze-drying, and thus synthesizing GO-CMC; and (2) dissolving the obtained product in distilled water, adding an appropriate amount of fluorescein FITC; and acetylating the product, carrying out a stirring reaction for 24 h at room temperature, dialyzing, freeze-drying, and thus synthesizing the graphene oxide GO-CMC-FI-Ac composite material. The preparation method is simple to operate, and the product is easy to handle; and the composite material can be applicable to drug sustained release and cell imaging, and the cost is low.