60results about How to "Chemically inactive" patented technology

The invention discloses a plant fiber starch fully-biodegradable material and a preparation method thereof. The material is a product prepared by melting, blending and extruding thermoplastic corn starch, 50 to 60 mesh needlebush fibers, polylactic acid, inorganic stuffing, a crosslinking agent and a solubilizer in a twin-screw extruder. The thermoplastic corn starch is a product prepared by extruding the corn starch and the solubilizer which are blended according to a ratio of 40 to 70: 2 to 5 in a single screw extruder. In the invention, dioctyl maleate (MOD) is grafted onto the polylactic acid to perform a hydroxylation reaction of MOD-functionalized polylactic acid and thermoplastic starch, so that PLA and TPS interfaces are soluble mutually and the binding force of the interfaces is improved. The product has high water resistance and high mechanical properties. Compared with the conventional thermoplastic corn starch composition packing material, the stretching strength of the material of the invention is improved by 30 to 60 percent, the rigidity is increased by 15 to 35 percent, the water absorption is reduced by 13 to 40 percent, and the material is nontoxic and low in cost.

The invention discloses a completely biodegradable food packing material and a preparation method thereof. The completely biodegradable material of plant fiber and starch is a product obtained by melting, blending and extruding potato starch, bamboo fiber, polycaprolactone, a plasticizer, an inorganic filling agent and a cross linker through a double-screw extruder; and the molten blend comprises the following components in parts by weight: 40 to 60 parts of potato starch, 10 to 30 parts of bamboo fiber, 5 to 10 parts of polycaprolactone, 2 to 10 parts of inorganic filling agent, 2 to 8 parts of cross linker, 5 to 20 parts of plasticizer and 2 to 10 parts of solubilizing agent. Compared with the traditional starch-based plastic degradable material, the tensile strength of the completely biodegradable material is improved by 20 to 40 percent; the stiffness is improved by 20 to 40 percent; the water absorption is reduced by 10 to 20 percent; and the completely biodegradable material has excellent properties of low cost, complete biodegradability and environmental friendliness, and can be widely used for packing food, particularly disposable instant snack boxes.

The invention discloses a method for improving the repairing efficiency of heavy metal polluted plants. The method comprises the following steps: growing plants with an enriching or super-enriching ability to heavy metal on heavy metal polluted soil or water; when the main stems of the plants grow leaves, spraying a heavy metal pollution repairing improver on the leaves; removing heavy metal pollutions by harvesting dead leaves of the plants in plant growing season. The method has the advantages that not only can the repairing efficiency of the heavy metal polluted plants be improved, but also heavy metal poisoning the plants can be reduced or removed, and the application range of heavy metal polluted plant repairing is extended.

The invention discloses a device used for material ferromagnetism and magnetization performance detection. The device comprises a laser device, linearly polarized light beams, a Glan-Thompson polarizer, an electromagnetic shielding cover, a radio frequency shielding box, a magnetic shielding cylinder, an axial scanning field coil, a heating and heat preservation module, atomic vapor bubbles, a light amplification detection module, a conveying tube sealing block, a conveying tube, a solenoid coil, a positioning frame and a grooved loading warehouse. The invention also discloses a method used for material ferromagnetism and magnetization performance detection. The device is integrated in structure and convenient to operate, material ferromagnetism and magnetization performance detection is acquired through nonlinear magneto-optical resonance dispersion signals, and the device has the characteristic of ultrahigh-sensitivity magnetic measurement and practical value in material selection of atomic frequency standards, atomic magnetometers and laser detection magnetic resonance instruments.

The invention relates to a high temperature resistant pearlescent pigment including a synthetic mica substrate, one layer or multi layers of metal oxide layer coating the synthetic mica substrate, and a zirconia high temperature resistant layer coating the metal oxide layer. The high temperature resistant pearlescent pigment using high temperature is up to 1150 DEG C, the high temperature resistant pearlescent pigment can be stably and well dispersed at high temperature, and can be widely used in underglaze color, in-glaze color, overglaze color, enamel, enamel paper transfers, architectural enamel plates, permanent color scales, high temperature resistant paints and other industries, and the usage amount is 0.5 ~ 50% of that of a glaze or a coating.

The invention discloses a plant fiber enhanced starch composite packaging material and a preparation method thereof. The plant fiber enhanced starch composite packaging material is prepared by the steps of mixing 40 to 60 weight parts of cation modified potato starch, 10 to 20 weight parts of straw fiber, 5 to 10 weight parts of polyvinyl alcohol, 5 to 10 weight parts of inorganic filler, 5 to 10 weight parts of cross-linking agent, and 5 to 10 weight parts of plasticizer, and melting, mixing and extruding by using a double-screw extruder. Compared with the conventional thermoplastic potato starch composite packaging material, the plant fiber enhanced starch composite packaging material has the advantages that: the tensile strength is improved by 40 to 60 percent, the deflection is improved by 40 to 60 percent, and the water absorption rate is reduced by 15 to 30 percent.

The invention discloses a wear-resistant and high-temperature-resistant powder coating for an oil well pipe, and belongs to the field of coatings. According to the technical scheme, the coating is prepared from, by weight, 100 parts of epoxy resin, 40-60 parts of phenolic resin, 10-16 parts of a curing agent, 10-20 parts of graphene oxide, 15-30 parts of a silane coupling agent, 1-5 parts of an anti-caking agent, 20-40 parts of talcum powder, 18-38 parts of mica powder and 10-30 parts of an antioxidant. The effect of improving high temperature resistance of the coating is achieved.

The invention relates to a calcium sulfate modified ethylene-vinyl acetate copolymer and a preparation method of the calcium sulfate modified ethylene-vinyl acetate copolymer. The calcium sulfate modified ethylene-vinyl acetate copolymer is prepared by the following raw materials according to parts by weight: 55-75 parts of ethylene-vinyl acetate copolymer, 10-30 parts of calcium sulfate and 10-30 parts of titanate coupling agents. The invention also comprises a preparation method of the calcium sulfate modified ethylene-vinyl acetate copolymer. The calcium sulfate modified ethylene-vinyl acetate copolymer has high tensile strength, is not easy to adsorb water, and has stable size, therefore, the calcium sulfate modified ethylene-vinyl acetate copolymer is particularly suitable for producing a transport packing material, a electronics shell, a life tool, a car instrument panel and the like.

The invention discloses a wastewater recycling apparatus for Huizhou ink production, comprising a neutralizing reaction container; a slide plate is fixedly connected to each of the front and back of the inner wall of the neutralizing reaction container; the upper surface of every slide plate is lapped to the lower surface of a connection plate; the lower surface of the connection plate is fixedlyconnected to the upper surface of a net cage; the upper surface of the connection plate is provided with first through holes corresponding to the net cage; the right side of the inner wall of the neutralizing reaction container is provided with second through holes corresponding to the net cage. The wastewater recycling apparatus for Huizhou ink production has the advantages that wastewater is filtered by the net cage, ink mud mixed in the wastewater can be blocked in the net cage, purified water is injected into the net cage via a purifying funnel, and acid matters attached to the surface ofthe ink mud in the net cage are removed under scouring of the purified water; the ink mud mainly includes ash, chemical properties of the ink mud are inactive, and therefore, purer ink mud can be acquired without affecting reuse of the ink mud; the treatment steps are simple, so that people's working is facilitated.

The invention discloses a calcium sulfate modified polylactic acid material and a preparation method thereof. The calcium sulfate modified polylactic acid material is prepared from the following raw materials in part by weight: 65 to 85 parts of polylactic acid, 5 to 20 parts of calcium sulfate, and 5 to 30 parts of vinyl triethoxysilane serving as a coupling agent. The invention also discloses the preparation method for the calcium sulfate modified polylactic acid material. The calcium sulfate modified polylactic acid material has high impact strength, good water resistance and good dimensional stability, and is particularly suitable for manufacturing biomedical products, packing products, living articles, electronic appliance shells, automobile instrument panels and the like.

The invention relates to a safety permanent anti-fog swimming goggle mainly comprising a goggle frame, double layer lenses, a pad part, a head band and a nose bridge. The safety permanent anti-fog swimming goggle is mainly characterized in that the swimming goggle frame and the outer transparent lens are integrated into a whole; a ring-shaped sealing edge for sealing the inside lens is arranged inside the swimming goggle frame, and the edge thereof is subjected to waterproof sealing treatment by using waterproof sealing adhesive; nitrogen gas is charged in an interlayer between the swimming goggle frame and the lenses; and two edges of the outer side of the goggle frame are provided with splicing parts for realizing the combination with the head band and the nose bridge. The safety permanent anti-fog swimming goggle can guarantee long time underwater sports, improves the protection safety of eyes, has good anti-fog and waterproof effect, and is comfortable in wearing.

The invention discloses a preparation method of an antibacterial stainless steel cutter with a nano titanium nitride coating. The preparation method specifically comprises the following steps: firstly, preparing nano titanium nitride particles by using an ammonia gas reduction method; then adding a metal element with an antibacterial function into a stainless steel matrix, and carrying out solution treatment to obtain an antibacterial stainless steel matrix; and finally, compounding the nano titanium nitride particles onto an antibacterial stainless steel cutter material matrix by using a coldspraying technology to obtain the antibacterial stainless steel cutter with the nano titanium nitride coating. The titanium nitride coating reinforced antibacterial stainless steel cutter material prepared by combining the titanium nitride coating and the antibacterial stainless steel has the good characteristics of high hardness, high strength, high wear resistance, bacterial resistance and no rust.

The invention relates to a preparation method of a dielectric wetting composite material, belonging to the technical field of dielectric wetting materials. According to the invention, tetraethoxysilane is used as a precursor, a sol-gel method is adopted to prepare nanometer silicon dioxide microspheres in situ in poly-p-xylene, and epoxy-terminated polydimethylsiloxane and perfluorosilane are separately used for hydrophobization treatment so as to prepare the dielectric wetting composite material; poly-p-xylylene is inactive in chemical properties and conformal in surface coating, and is a good polymer insulating layer; the dielectric constant of silicon dioxide is relatively high, so driving voltage can be effectively reduced; as the nanometer silicon dioxide microspheres are prepared insitu in poly-p-xylylene, so poly-p-xylylene has good hydrophobic property and a relatively high dielectric constant; the chemical state of polydimethylsiloxane is dimethyl silicone oil, and the dimethyl silicone oil is non-toxic and odorless, and has physiological inertness and good chemical stability, so the prepared dielectric wetting composite material has good hydrophobicity and weather resistance.

The invention discloses an immobilization method and application of pichia pastoris. Fibrous materials after being pretreated by plant glue are used as an immobilization carrier, the pichia pastoris is activated, then immobilization fermentation culture mediums are inoculated with the activated pichia pastoris, culture is performed, strains are adsorbed on the carrier in the culture process. In addition, the fibrous materials after being pretreated by the plant glue can be soaked in a methyl acryloxyethyl trimethyl ammonium chloride aqueous solution for secondary pretreatment, then washing anddrying are performed, so that the pichia pastoris is obtained. The immobilization method has the beneficial effects that through treatment with methyl acryloxyethyl trimethyl ammonium chloride, the surface of the carrier is provided with positive charges; the surfaces of materials are accessed with the positive charges of appropriate density, so that adsorption of proteins adhered on cell surfaces can be effectively strengthened, cell adhesion can be promoted, and besides, negative influence cannot be produced on the activity of cells; the enzyme activity of products is increased, the enzymeactivity of phytase produced through a fermenter is increased from 12326.85U/mL to 15221.85U/mL; and the whole fermentation cycle can be shortened.

The invention discloses a self-hardening anti-breaking cable based on power grid power transmission, and belongs to the technical field of power grid power transmission, the self-hardening anti-breaking cable can reinforce an outer sheath by inlaying a middle embedded pipe and a node ball, and the middle embedded pipe can perform an extension compensation effect to a certain extent under the condition that normal stretching and bending actions of the cable are met; under the action of extreme stretching, the middle embedded pipe can generate an excessive compensation action, the water release action of the node ball is triggered by virtue of a trigger line in the middle embedded pipe, then water enters the middle embedded pipe and then is subjected to a hydraulic gelatinization reaction, the middle embedded pipe is promoted to generate a hardening action, and at the moment, the strength of the middle embedded pipe is greatly improved, and therefore, the cable is prevented from being continuously stretched and fractured; and through the water absorption magnetic balls absorbed on the middle embedded pipe, the water leakage phenomenon can be sensed in time, plugging is carried out, the influence of water penetration on the cable is avoided, and the power transmission safety of the cable is greatly ensured.

The invention belongs to the technical field of grain storage, and particularly relates to a granary capable of preventing mildewing during grain storage and an anti-mildewing control method. The granary comprises a granary main body. The granary main body is separated into a plurality of storage areas by a plurality of partition walls. A drying platform is arranged in the granary main body and above all the storage areas, and comprises drying tabletops for drying grains, a tabletop lifter, a grain spreader and a controller. The controller can control the inclination angle of each drying tabletop to enable the dried grains to enter a certain storage area. The granary has the advantages that after the grains are transported and dried at a height in the drying process, grain positions insideand outside a grain pile can be exchanged to avoid non-thorough grain drying; the storage areas are dried, and accordingly, grain mildewing can be effectively prevented. The invention further provides a mildew-proof plate with a good anti-mildew effect.

The invention discloses a magnetic particle preparation process, and belongs to the technical field of magnetic particle preparation. The method comprises the following steps: extracting silicate and carbonate in sodium hydroxide, standing the extracted solution for 20 minutes, screening out impurities in the solution, pouring the screened solution into cooling equipment for cooling, standing the standing extracting solution, cooling and standing, magnetically stirring in a magnetic stirrer, mixing ferric chloride and polyacrylic acid, putting the mixed substance into a closed vessel, and uniformly stirring. Filling the inner cavity of the closed vessel with nitrogen, increasing the temperature of the inner cavity of the closed vessel while filling the nitrogen, magnetically stirring the mixed substance, heating to 220 DEG C, treating, pouring a sodium hydroxide solution into a mixed solution of ferric chloride and polyacrylic acid, observing whether the color change of the solution meets the requirement, and packaging and leaving a factory. In the preparation process, the device is filled with nitrogen, the chemical property of the nitrogen is inactive, and the situation that the preparation result does not reach the preset standard due to the fact that the nitrogen reacts with external gas in the preparation process can be avoided.

The invention discloses a high-performance ceramic material for a water seal of a water pump, which comprises the following raw materials in parts by weight: 50-60 parts of silicon nitride, 15-18 parts of talc powder, 28-34 parts of wollastonite, 2-5 parts of aluminum oxide, 2-4 parts of yttrium nitrate, 1-3 parts of zirconium dioxide, 2-3 parts of titanium dioxide, 1-1.5 parts of thermoplastic phenolic resin and 2-3 parts of absolute ethyl alcohol. The ceramic material disclosed by the invention has high mechanical strength, excellent wear resistance and excellent heat resistance; moreover, the preparation process is simple, and the cost is relatively low.