9results about How to "Avoid demulsification" patented technology

The invention provides a nano-composite anti-seepage coating for goaf sealing and a preparation method and application thereof. The impermeable coating comprises the following components in percentage by mass: 10 to 30 percent of nano silica sol subjected to surface organic modification, 15 to 35 percent of styrene-butadiene latex subjected to pH buffer stabilization, 0.5 to 10 percent of functional nano material subjected to surface activation treatment, 20 to 60 percent of superfine sand and the balance of short fiber, inorganic powder filler and auxiliaries. The method comprises raw material pretreatment; step-by-step gradient blending is performed; and functions are compounded. According to the application, the nano-composite anti-seepage coating is applied to surrounding rock reinforcement, crack plugging or anti-seepage sealing engineering of a coal mine goaf. The slurry has the advantages of being high in deep infiltration capacity, excellent in surface film forming and internal compatibility and stable in performance, an internal infiltration reinforcing layer and a surface sealing layer can be formed at the same time after construction, and an integrated double-layer anti-seepage network is formed.

The invention relates to the technical field of oil and gas wells, in particular to a reinforcing agent for oil-based drilling fluid leaking stoppage cement paste and application of the reinforcing agent, and aims to overcome the defects in the prior art. The reinforcing agent is prepared from the following components in parts by weight: 65 to 80 parts of a micro demulsifier, 7.5 to 15 parts of a hydrophilic emulsifier, 7.5 to 15 parts of an anionic hydrophilic emulsification reinforcing agent and 5 to 10 parts of a nonionic hydrophilic emulsification reinforcing agent. According to the invention, the compatibility of the cement paste and the oil-based drilling fluid can be effectively improved, and the success rate of cementing plugging of the oil-based drilling fluid is improved.

The invention relates to the technical field of functional polypropylene fibers, in particular to a polypropylene short fiber for low-foam filtration and a preparation method of the polypropylene short fiber. The polypropylene short fiber for low-foam filtration is obtained by blending and extruding polybutadiene grafted with organic tin alkyl acrylate and polypropylene, and the polybutadiene grafted with the organic tin alkyl acrylate is a hydrolytic carboxyl system. The polypropylene short fiber for low-foam filtration has excellent defoaming performance and thermal stability.

The invention discloses a pesticide microcapsule suspension and a preparation method thereof, which belongs to the technical field of pesticide production, and comprises the following steps: weighing the pesticide original drug, stirring and adding an organic solvent thereto, adding modified isophorone diisocyanate thereto after ultrasonic stirring is completed, stirring and mixing to form an oil phase; weighing an emulsifier and a dispersant and mixing them, adding deionized water thereto, stirring and mixing at room temperature to form an aqueous phase; spraying the oil phase into the aqueous phase by a spray gun, and then shearing and emulsifying to form an oil-in-water emulsion, and then dripping a chain extender into the oil-in-water emulsion, and stirring, after the dripping is completed, continuing to stir at a uniform speed, and after the stirring is completed, the pesticide microcapsule suspension is obtained. Relative to the prior art, the pesticide microcapsule suspension prepared by the present invention has an improved encapsulation rate of the pesticide original drug, and is more in line with the development concept of environmental protection and green.

This invention belongs to the field of waterborne anti-corrosion coating manufacturing technology, specifically relating to highly corrosion-resistant waterborne coatings and their preparation methods. This invention uses waterborne epoxy resin emulsion and waterborne acrylic emulsion as resin matrices, improving the film density of the waterborne coating. In the composite anti-rust pigment, surface-modified graphene and calcium-ion-loaded silica particles are grafted with epoxy groups using KH-560, improving the compatibility of the calcium ion-exchange type anti-rust pigment in the resin matrix. Modified mica iron oxide and surface-modified graphene extend the diffusion path of corrosive media through a layered structure. Potassium silicate helps form an inorganic silicate protective layer and seals the micropores of the coating, improving the coating's shielding performance. The calcium ion-exchange type anti-rust pigment generates a silicate passivation film through calcium ion exchange, reducing the rate of further iron dissolution. The waterborne coating of this invention is suitable for anti-corrosion protection of metal substrates in harsh corrosive environments such as marine salt spray and industrial acids and alkalis.

The invention discloses a manufacturing method of flexible water-resistant mortar. The manufacturing method comprises the following steps: preparing raw materials, namely weighing cement, quartz sand with different granularities, filler, cellulose ether, nano silicon dioxide, polymer emulsion and auxiliaries; dry mixing and stirring: mixing and stirring the cement, the quartz sand, the filler, the cellulose ether and the nano silicon dioxide; adding water for premixing: adding a proper amount of water into the mixed dry material and uniformly stirring; emulsion addition: adding a polymer emulsion, a coalescing agent and a water repellent, and continuously stirring; adding auxiliaries: adding a water reducing agent, a defoaming agent and a coloring agent, and increasing the stirring speed until the slurry is uniform; according to the present invention, the nano-silica and the water repellent are added to enhance the compactness and the hydrophobicity of the mortar so as to improve the impermeability and the durability of the product, and meanwhile, the ratio of the polymer emulsion to the filler is adjusted, and the segmented stirring process is combined, such that the flexibility of the product is significantly improved, and the cracking phenomenon can be effectively prevented.

The application relates to the technical field of high polymer compound synthesis, in particular to a silane type emulsion polymerization stabilizer, application and a silicone-acrylate emulsion stabilized by the same. The preparation steps of the silane type emulsion polymerization stabilizer are as follows: (1) an epoxy silane is subjected to ring-opening reaction and polyether amine to form a polyether silane-epoxy silane mixture, and (2) the mixture is prepared into a polyether silane-epoxy silane oligomer through condensation reaction. By optimizing the preparation raw materials and preparation method of the polyether silane-epoxy silane mixture, the use amount of the stabilizer is controlled, the emulsion stabilized by the stabilizer can exhibit excellent stability, and in addition, the stabilizer can also improve the physicochemical properties of the emulsion, such as hardness, adhesion and water resistance. The stabilizer is synthesized without inert solvent, the method is environment-friendly, simple and effective.

The invention discloses a method for inhibiting rust of rusted steel bars in a concrete structure, and aims to solve the problems that in the prior art, a safe, environment-friendly and long-acting steel bar corrosion inhibitor convenient to construct is lacked, and a long-acting steel bar corrosion prevention method formed by compounding materials such as an efficient anti-corrosion coating is lacked. Through three innovations of organic silicon modification, a nano-composite technology and a self-crosslinking system, the core problems of poor weather resistance, high VOC (Volatile Organic Compounds), insufficient dispersion stability and the like of the traditional acrylic emulsion are solved, and the acrylic emulsion is particularly suitable for severe environments with high ultraviolet rays, high humidity and the like, so that long-period corrosion prevention is realized, and the service performance of concrete is improved.

The present invention relates to the field of external veterinary drugs, and in particular to a safe and efficient non-pronil general external anthelmintic for dogs and cats and a preparation method thereof. The anthelmintic, measured by mass percentage, comprises at least: 5-12% non-pronil, 4-15% adjuvant, 1-15% auxiliary agent, and the remainder is supplemented by solvent. The external anthelmintic provided by the present invention is safe and efficient and is universal for cats and dogs. It has no adverse reactions when used by cats and dogs. It can avoid the first-pass effect of the liver and the influence of the gastrointestinal tract on the drug. On the other hand, the anthelmintic provided by the present application can not only effectively kill adult worms, but also further inhibit the development of worm eggs, thereby playing a long-term inhibitory and anthelmintic effect.