131results about How to "Improve interfacial tension" patented technology

Hydroscopic polymer gels can be formed by applying a water soluble or water dispersible polymer on a surface and allowing water to be sequestered from the atmosphere into the polymer. The polymer gels provides for easier next time cleaning. In addition, the surfaces of textiles and related materials can be engineered by the formation of polymer gel films thereon. Polymer gels also provide a vehicle by which sites of chemical reactions can be localized.

The invention relates to an emulsion paint for preventing mosquitoes and flies and a preparation method thereof. The emulsion paint comprises the components based on parts by weight: 100-400 parts ofnano waterborne resin with 48% of solid content, 2-5 parts of nano defoaming agent, 1-5 parts of preservative, 5-10 parts of dispersing agent, 200-500 parts of pigment filler, 1-10 parts of nano thickening agent, 1-10 parts of flatting agent, 0-10 parts of antifreeze agent, 0-10 parts of film formation auxiliary agent, 5-20 parts of nano inorganic anion antibacterial agent, 40-100 parts of nano polymer hollow microspheres, 20-80 parts of biological mosquito repellent and 0-350 parts of water. The emulsion paint for preventing the mosquitoes and the flies can be coated on the wall and the wood,has a paint film with the characteristics of good covering power, good adhesive force, scouring resistance and the like, can effectively prevent the mosquitoes and the flies from entering the room, and has the advantages of low cost, good construction property and excellent environmental protection performance, thus being taken as a product perfectly blending the three themes of decoration, functionality and environmental protection performance.

In the prior art, due to the structure characteristics of the polyformaldehyde, the coloring and the toughening of the polyformaldehyde are difficult compared to other plastics so as to provide a worldwide exploration problem. The present invention relates to a polyformaldehyde masterbatch with double-function of toughening and coloring, and a preparation method thereof. The polyformaldehyde masterbatch comprises, by weight, 70-90% of a thermoplastic polyurethane elastomer, 7-9% of nano-scale silicate, 0.8-2.5% of a nano-scale coloring agent, 1-3% of melamine, 0.3-0.8% of a surfactant polysiloxane, and 0.2-0.5% of an anti-aging agent, wherein the anti-aging agent is a mixture comprising styrenated phenol and diphenyl-p-phenylenediamine. The polyformaldehyde masterbatch of the present invention has the double functions of toughening and coloring, such that the strength and the stiffness of the material are not reduced while the notched impact strength of the POM is substantially improved, and the processing fluidity and the thermal deformation resistance are improved.

A UV-curable composition and liquid toner useful for electrophotographic printing, a method of electrophotographic printing and a device for electrophotographic printing are disclosed. A UV-curable composition and UV-curable liquid toner useful for electrophotographic printing includes a higher-acrylate, i.e. a triacrylate or higher. Such a composition and toner provide for scratch resistant print.

The invention relates to a low-surface-tension solid-free reservoir protection drilling fluid, and belongs to the technical field of petrochemical engineering. The low-surface-tension solid-free reservoir protection drilling fluid comprises, by mass, 0.2-0.3 gram of sodium carbonate, 0.2-0.4 gram of PH-value conditioning agent, 0.8-1 gram of polymer emulsion powerful coat agent, 1.5-2.5 grams of fluid loss additive, 0.3-1 gram of shearing potentiator, 2-3 grams of polymeric alcohol, 0.5-1.5 grams of surfactant, 0.05-0.1 gram of antioxidant and 0-300 grams of soluble salt in every 100ml of water in an evenly-mixed mode. The low-surface-tension solid-free reservoir protection drilling fluid does not have the solid content, the surface tension is lower than 30mN/m, and the low-surface-tension solid-free reservoir protection drilling fluid has the good reservoir protection effect and is particularly suitable for horizontal well reservoir section drilling.

The invention discloses a gemini surfactant for a tertiary oil recovery chemical oil-displacing agent. The gemini surfactant has the structural formula shown in the specifications, wherein R1 and R2 are alkyl with 11 to 23 carbon atoms respectively. The surfactant of the invention has the advantages of single use without adding an alkali, harmlessness to a stratum, stable property, high capacity of reducing the oil/water interfacial tension and ensuring ultralow interfacial tension of 10<-3> to 10<-4>mN/m of crude oil/water in a wider range, and ideal oil displacing effect. The problem that the oil displacing efficiency of the conventional oil-displacing agent is reduced due to chromatographic separation is solved.

The invention discloses an insulating heat conducting cable material. The insulating heat conducting cable material comprises the following raw materials in parts by weight: 60 to 70 parts of high-density polyethylene, 20 to 30 parts of modified polypropylene, 15 to 25 parts of heat conducting filler, 6 to 10 parts of polyolefin elastomers, 5 to 8 parts of glass fibres, 3 to 5 parts of a compatilizer, 3 to 8 parts of modified zinc borate, and 10 to 15 parts of ethylene-vinyl acetate copolymer. The insulating cable material is high in heat conductivity, high in insulating property, high in tensile strength, high in toughness, and convenient to process.

The invention relates to a welding electrode for Ni steel welding. A heat-resistant steel welding electrode comprises an H08E welding core and a cover, wherein the cover contains the following components by weight percent: 20-30% of marble, 13-30% of fluorite, 3-5% of rutile, 8-12% of iron powder, 1-2% of sodium carbonate, 2-4% of silicon iron, 2-4% of ferromanganese, 5-7% of metallic nickel, 1-3% of ferrotitanium, 1-3% of silica powder, 1-3% of flogopite, 1-2% of zircon sand and 17-21% of pure sodium silicate. According to the invention, after the (620+/-10 DEG C)*1h thermal treatment on the deposited metal, the mechanical property is stable, the strength is suitable, the toughness is better, the production processing property is excellent, the surface of the welding electrode is smooth, the eccentricity is stable, and the yield is high. The electrical arc is stable; the combustion is stable during a welding process; the spreadability and the fusing property are better; the formation of weld is attractive; the dregs-removing property is better.

The invention discloses casting powder for a continuous casting crystallizer. The casting powder comprises raw materials in parts by weight as follows: 3.5-15 parts of fluorite, 35-55 parts of aedelforsite, 5-15 parts of alkali, 0-2 parts of lithium carbonate, 0-10 parts of diaspore, 0-6 parts of a cement clinker, 1-5 parts of magnesia powder, 2-5 parts of pyrolusite, 0-8 parts of sodium fluoride, 0-5 parts of barium carbonate, 0-5 parts of bentonite, 1-4 parts of coke, 0-8 parts of a carburant, 1-3 parts of carbon black and 1-2 parts of a binder. According to the casting powder, the preparation cost is low; the recovery rate of the casting powder is larger than or equal to 98.5%; the color of the casting powder is uniform; the granularity is uniform; the granulation rate is high; dust is reduced; the melting point of the casting powder is low; the viscosity is low; after the casting powder is added into the crystallizer, the casting powder is melted uniformly and shows excellent spreadability, heat retaining property and adsorptive property; heat is transferred uniformly all around the crystallizer, and the lubrication is excellent; and defects such as concave pits, impurities and the like don't exist on the surface of a casting blank, the internal quality is excellent, and the qualified rate of the casting blank is equal to or larger than 99.8%.

The invention provides a material wettability improvement device and method based on multi-field coupling. The material wettability improvement device comprises an operation platform, a vacuum furnace stored on the operation platform, a high-voltage power supply control box, an ultrasonic auxiliary device, an electric field auxiliary device and a magnetic field auxiliary device. A rack on one side of the vacuum furnace is provided with a guide rail stand column. The upper end of the guide rail stand column is provided with a movable cross beam. An ultrasonic transducer is fixed to the cross beam. An ultrasonic variable-pressure rod stretches into the vacuum furnace through a corrugated pipe. The electric field auxiliary device is arranged below the ultrasonic variable-pressure rod. A sample is stored on an insulating ceramic plate and positioned through a stop block. The inner side of the vacuum furnace is further provided with a magnetic field power coil which generates a variable magnetic field after being applied with current. By adoption of the material wettability improvement device and method, the sample can be wetted under mutual assistance of an ultrasonic vibration load, an electric field and the magnetic field, and the problems that existing additionally arranged auxiliary equipment is simplex in applying mode, the ultrasonic applying mode is large in power loss, and simplex assistance is unobvious in sample wettability improvement effect are solved.

The invention relates to grinding roller sealing ring materials. The grinding roller sealing ring materials are characterized by comprising, by weight, 100 parts of fluororubber, 10-20 parts of organic montmorillonite, 10-30 parts of wear-resisting carbon black, 5-20 parts of modified silicon carbide, 10-20 parts of graphene composites, 15-25 parts of magnesium oxide, 0.5-2 parts of hydroxyl silicone oil, 0.1-3 parts of microcrystalline wax, 0.5-2 parts of bisphenol AF and 0.5-1.5 parts of benzyl triphenyl phosphoric chloride. The graphene composites are graphene/ hydrogenated styrene- butadiene- styrene compounds subjected to in-situ reduction. The graphene/ hydrogenated styrene- butadiene- styrene compounds subjected to in-situ reduction are added, the graphene composites are dispersed easily, the problems of difficult stripping of graphene and difficult addition caused by low apparent density in the prior art are resolved, graphene can be evenly dispersed in the grinding roller sealing ring materials, the function of the graphene is fully played, and the wear resistance and heat resistance of the grinding roller sealing ring materials are effectively improved.

Provided in some embodiments are systems and methods for determining characteristics of a hydrocarbon reservoir. Embodiments include conducting a nuclear magnetic resonance (NMR) logging operation of a targeted reservoir section of a wellbore extending into a hydrocarbon reservoir to generate a NMR log of the targeted reservoir section, conducting a resistivity logging of the targeted reservoir section to generate an uninvaded water saturation (S_w) log of the targeted reservoir section, determining for each of a plurality of depths in the section, a T₂ cutoff point based on values of the NMR and S_w logs, identifying a subset of the T₂ cutoff points that exhibit a hyperbolic trend, determining a theoretical cutoff curve corresponding to the subset of the T₂ cutoff points, determining a free water level (FWL) of the reservoir based on the theoretical cutoff curve, and determining a rock type of the reservoir based on the theoretical cutoff curve.

The invention provides a modified PMMA optical film. The modified PMMA optical film contains the following components in parts by mass: 60-80 parts of PMMA resin, 20-40 parts of aromatic (co)polycarbonate and 5-14 parts of a compatibilizer, 0.5-8 parts of a flatting agent. The modified PMMA optical film has a flat and smooth surface, is uniform in thickness, high in light transmittance, low in haze level, colorless and transparent and has good heat resistance and tenacity. The invention further provides a preparation method of the modified PMMA optical film. The preparation method comprises the steps of sequentially preparing modified resin and modified coating liquid, forming a film through coating, and carrying out thermal stretch formation and the like. The method is simple in process,easy for industrial production and can be used for preparing the ultrathin and high-transparency modified PMMA optical film.

The invention relates to a sieve device for a dishwasher, comprising a sieve area (2) and a plurality of holes that are formed within the sieve area. According to the invention, the holes in the sieve area are embodied with different sizes.

A low-strength high-toughness and heat-resistant steel welding rod comprises an H08E welding core and a coating. The coating is prepared by components including, by weight, 35-43% of marbles, 16-20% of fluorite, 3-5% of imported rutile, 1-2% of sodium carbonate, 2-4% of atomized ferrosilicon, 1-3% of flogopite, 3-5% of mid-carbon ferromanganese, 2.5-3% of Cr, 1.0-1.5% of molybdenum, 2-3% of ferrotitanium, 1-3% of silica powder, 1-2% of rare earth ferrosilicon and 17-21% of pure sodium silicate. After subjected to heat treatment at the temperature ranging from 675 +/-10 DEG C for 3 hours, the deposited metal is stable in mechanical property, low in strength (with room temperature tensile of 510-540Mpa), good in charpy impact absorbing energy at minus 20 DEG C is 180J above) and good in production process performance; the steel welding rod is smooth in surface, stable in eccentricity and high in yield.

The present disclosure is drawn to a method for improving the durability of an ink printed on a substrate. In an aspect, the method comprises:

• • (a) providing a substrate having an ink printed thereon;
  • (b) applying an organosilane to the ink to form a coating over the ink,
    • wherein the organosilane is of the formula X—SiR₁R₂R₃,
    • wherein R₁, R₂ and R₃ are all hydrolysable groups, and
    • X comprises an a nucleophilic nitrogen-containing group which is covalently bonded to Si in X—SiR₁R₂R₃ via a non-hydrolysable linker group; and
  • (c) curing the organosilane. The present disclosure further describes a substrate having an ink printed thereon, wherein the ink has a coating thereon formed by applying an organosilane to the ink and curing the organosilane.