6results about How to "Enhanced mesh structure" patented technology

The invention provides an acid-resistant nano polymer microsphere inclusion plugging system as well as a preparation method and application thereof. The plugging system is prepared from the following raw materials in parts by mass: 1-5 parts of acid-resistant nano polymer microspheres, 1-5 parts of an acid-resistant low-molecular-weight cyclodextrin polymer and 80-120 parts of water. According to the invention, a supramolecular construction thought is introduced, and an inclusion synergistic plugging system constructed by acid-resistant nano polymer microspheres and a cyclodextrin polymer through a host-guest inclusion effect is provided through design of a nano polymer microsphere surface molecular structure and a cyclodextrin polymer molecular structure. The plugging system disclosed by the invention is high in acid resistance and excellent in shear resistance, and the nano polymer microspheres have good dispersity and injectability and are easy to inject into a stratum to move to the deep part; and meanwhile, the plugging agent has the characteristics of low concentration and high efficiency, and can effectively enter the deep part of a stratum and efficiently plug cracks, so that the swept volume and the displacement efficiency of CO2 can be improved.

The invention discloses a novel carbonized polybenzoxazine aerogel and a preparation method thereof, the novel carbonized polybenzoxazine aerogel is prepared by carbonizing a novel polybenzoxazine aerogel, and the invention belongs to the technical field of aerogel materials. The preparation method comprises the following steps: preparing a polybenzoxazine solution; putting the polybenzoxazine solution into a mold to form wet gel; aging the wet gel, and drying at normal pressure for 24 hours after aging; the aged wet gel is washed with N, N-dimethylformamide, and wet conductive gel is obtained; and drying the wet gel at normal temperature and normal pressure to obtain the novel polybenzoxazine aerogel. The polybenzoxazine aerogel is subjected to heat preservation for 6 hours at the temperature of 800 DEG C in an argon environment to be carbonized, then furnace cooling is carried out, and the novel carbonized polybenzoxazine aerogel is obtained after the polybenzoxazine aerogel is cooled. The preparation method has the advantages that the bisphenol F type benzoxazine monomer is used as a raw material, and the preparation method is simple through acid catalytic polymerization and normal-pressure drying; compared with other aerogel materials, the aerogel disclosed by the invention has excellent electromagnetic shielding performance and relatively high resistivity.

This invention discloses a high-temperature resistant downhole emulsion explosive and its preparation method, belonging to the field of emulsion explosive technology. The emulsion explosive comprises an aqueous phase material, an oil phase material, and a sensitizer, with a mass ratio of (88-96):(4-12):(0.8-2.0). The aqueous phase material, by mass parts, includes the following raw materials: 70-80 parts ammonium nitrate, 4-6 parts sodium nitrate, 5-8 parts urea, 0.1-0.6 parts chitosan quaternary ammonium salt, and 10-20 parts water. The oil phase material, by mass parts, includes the following raw materials: 50-70 parts composite oil phase and 20-40 parts composite emulsifier, which includes Span80 and polyisobutylene succinimide derivatives. This invention involves adding the aqueous phase material to the oil phase material, adding the sensitizer to the emulsion matrix formed by emulsification, and stirring to prepare the emulsion explosive. The emulsion explosive provided by this invention is suitable for use in deep well high-temperature environments and exhibits good high-temperature stability.

The invention relates to an ultra-thin asphalt concrete, and belongs to the technical field of asphalt concrete. The invention firstly uses epoxy silane to perform surface modification on nano silicon dioxide, then adds branched polyethyleneimine, and forms a hyperbranched structure with an amino terminal through the action of epoxy groups and amino groups, then adds glycidyl methacrylate, and continues to realize the conversion of the amino terminal to a double bond based on the action of epoxy groups and amino groups, thereby obtaining a surface hyperbranched nano silicon dioxide, and compounding sulfur as a composite auxiliary agent, and co-modifying the matrix asphalt with SBS to obtain modified asphalt, and finally, when the modified asphalt, coarse aggregate, fine aggregate, basalt fiber and modified mineral powder containing isocyanate groups obtained by sequentially surface modification with aminosilane and surface grafting with phenylmethane diisocyanate are used as components, the ultra-thin asphalt concrete formed has excellent mechanical properties after being actually constructed on the road surface.

The present invention relates to an acrylic topcoat for ground and a preparation method thereof, belonging to the technical field of topcoats, wherein the topcoat comprises component A and component B; the component A comprises: hydroxy acrylic dispersion, triethoxymethylsilane, [8-(epoxypropyloxy)-n-octyl]trimethoxysilane, 1-benzyl-2-methylimidazole, composite filler, leveling agent, dispersant, defoamer and adhesion promoter; the component B comprises: curing agent and propylene glycol diacetate. The present invention uses modified sericite, bentonite and glass microbeads as composite fillers, synergistically making the prepared topcoat have excellent liquid medium resistance, and at the same time, the present invention uses perfluorododecyl trichlorosilane to graft sericite, thereby strengthening the liquid medium resistance of the topcoat. In addition, triethoxymethylsilane, [8-(epoxypropyloxy)-n-octyl]trimethoxysilane and 1-benzyl-2-methylimidazole are used to effectively increase the wear resistance of the topcoat.

The invention relates to the technical field of exploitation auxiliary materials for carbonate reservoir oil and gas wells, and particularly discloses a carbonate reservoir acidification diverting agent, a preparation method of the diverting agent and acidification acid liquor. The acidification diverting agent is obtained by free radical polymerization reaction of a monomer a, a monomer b and a monomer c; wherein the monomer a is acrylamide, the monomer b is 1-vinyl-3-propyl imidazole sulfonate, and the monomer c is octadecyl dimethyl allyl ammonium chloride; the molar ratio of the monomer a to the monomer b to the monomer c is (73-83): (85-91): (2-4). The acid liquor has the beneficial effects that the acid liquor still keeps the structural stability at high temperature, and keeps certain viscosity; secondary damage to the stratum is avoided; the structure can be subjected to gel breaking and viscosity reduction in the stratum, and flowback is facilitated.