57 results about "Fiber crystal" patented technology

The invention relates to a surface modified product of an acicular wollastonite crystal and a production method thereof. The product is micro-nano composite powder by coating a nanometer calcium carbonate crystal on the surface of the acicular wollastonite fiber crystal. The method comprises the following steps: firstly, preparing an active lime milk solution and an acicular wollastonite fiber solution; compounding the two solutions into a suspension; adding a crystalline directing agent to the suspension and filling CO2 gas for a coating reaction so that the nanometer calcium carbonate crystal gradually grows on the surface of an acicular aedelforsite fiber, and the micro-nano composite powder by coating a nanometer calcium carbonate crystal on wollastonite is obtained; and coating a layer of coupling agent on the surface of the micro-nano composite powder to obtain the acicular wollastonite fiber crystal-nanometer calcium carbonate crystal-coupling agent composite powder material. The product keeps the superior characteristics of the acicular wollastonite crystal and the nanometer calcium carbonate crystal, improves the surface energy and the chemical activity of wollastonite composite particles and can be well stuck with organic polymers so as to form a favorable interface and improve the bonding force between fillings and basal bodies, such as plastics, pulp, and the like.

A preparation process of mciron level or nanometer level oxygen-free copper wire includes continuous oriented solidification of oxygen-free copper material to prepare oxygen-free copper rod blank of 5-30 mm diameter and with continuous cylindrical crystal structure; cold or warm rolling to reduce the diameter of copper rod to 8-15 mm; and drawing to produce superfine filament of 10-50 micron diameter. The superfine oxygen-free copper filament thus produced has continuous lengthwise fiber crystal structure of 1 nm to 10 micron diameter, and thus has excellent cold-machining extending and deforming capacity.

The invention discloses a material similar to graphite structure for the cathode of a lithium ion battery and a preparation method thereof and aims to solve the technical problem of improving the safety of the lithium ion battery. The material similar to graphite structure for the cathode of the lithium ion battery is a BCN compound with a fiber crystal structure. The distance between the layers of the crystal is between 0.300 to 0.400nm; the granularity is 1 to 75 Mum; the voltage of the lithium when embedded into the material is 0.2 to 0.8V; and the voltage of the lithium when pulled out of the material is 0.2 to 1.0V. The preparation method comprises the following steps: an acicular precursor is prepared by using a nitrogenous compound and boric acid; the acicular precursor is sintered to obtain the fiber crystal structure. Compared with prior art, the BCN material similar to graphite structure has a higher discharge tension platform than regular carbon materials, prevents dendritic crystal when used as the material for the cathode of the lithium ion battery, and solves the safety problem with the lithium ion battery. Furthermore, the preparation method is simple and able to realize large-scale industrial production.

The invention discloses a method for preparing an efficient air purification material. Clay mineral fibers using silicon and magnesium as main components are used as a raw material, and the method comprises the following steps of: activating carbonates and oxides among dissolved fiber granules by adopting semi-dry acid so that fiber bundles are easily dissociated and dispersed by a mechanical force, and dredging structural micropores of mineral fiber crystal so that the specific surface area of the mineral is greatly enlarged; adding a surfactant to increase the adsorption capability of mineral powder on formaldehyde, ammonia and other volatile organic pollutant molecules; and granulating, forming pores, roasting at a low temperature to set the shape of the product, and thus obtaining the efficient indoor air purification material. The material is placed in hollow and porous indoor ornaments of different types such as vases, flowerpots, or textile packages and the like, so that the environment is beautified, the concentration of indoor pollutants such as formaldehyde, ammonia and other harmful gases can be reduced, and the aims of purifying the indoor air, preventing decoration diseases and improving the health level of residents are fulfilled.

The invention discloses a metal oxide nano fiber for VOCs (Volatile Organic Compounds) catalytic oxidation. The average diameter of the metal oxide nano fiber is 100-800nm; the specific surface area is 10-200m<2>/g and the average crystalline grain in the metal oxide nano fiber crystal is less than 30nm and the metal oxide is at least one of vanadium oxide, chromium hemitrioxide, manganese oxide, cupric oxide and cerium oxide. The invention further discloses a preparation method and application of the metal oxide nano fiber; a one-dimensional metal oxide nano fiber prepared by means of electrostatic spinning is used as a catalyst; the specific surface area and relevant performances of the catalyst are improved and the dispersion, adsorption and desorption of reactant and product in VOCs catalytic oxidation are effectively enhanced.

The invention discloses a method for preparing flame-retardant smoke inhibition polypropylene and belongs to the technical field of resin preparation. Modified nano sponge is prepared from a resin inwhich flame-retardant functional mother liquor is soaked; sepiolite powder in the flame-retardant functional mother liquor is prepared from the reaction that magnesium hydrate crystal and phosphate are generated from a magnesium silicate enriched compound under the action of ammonia gas and phosphoric acid; magnesium hydrate can be decomposed and heat can be absorbed under a high-temperature combustion condition, and then the temperature of polypropylene can be slightly reduced; in addition, high-temperature resistant silicate fiber crystal which is rich in the sepiolite powder is cross-linkedin molecules of polypropylene, and hydrogen bonds are formed; the modified nano sponge can be expanded at a high-temperature state when being combusted, then pyrophosphoric acid melamine can be easily wrapped, and the ammonia gas can be released from the pyrophosphoric acid melamine and ammonium phosphate under a great heat condition; in an agglomeration phase reaction area, high-temperature decomposition reaction heat absorption is achieved, and relatively low temperature is needed; due to the silicate crystal fiber, residual carbon generated after the polypropylene is carbonized is adsorbedin micro-pore structures of the sepiolite powder, then the residual carbon rate is increased, the smoke emission is reduced, and the effects of flame retardancy and smoke inhibition are achieved.

The invention discloses fiber crystal toughened high-strength superfine crystal pure titanium and a preparation method thereof. The microstructure is formed by mixing fiber grains with isometric superfine grains, the length ratio of the long axes of the fiber crystal grains to the length of the short axes is greater than 10 and the size of the short axes is 200 nanometers to 3 microns, and the size of the isometric superfine grains is 50 nanometers to 1 microns. The volume fraction of the fiber grains is 20%-60%, the preparation method of the fiber crystal toughened high-strength superfine crystal pure titanium comprises the following steps that (1), the grain orientation of pure titanium is adjusted through one to two passes of drawing, so that a titanium rod material is obtained; (2), high-strain rotary forging is carried out in a one to three passes; (3), low-temperature annealing is carried out; (4), multi-pass low-strain rotary forging is carried out; and (5), the fiber crystal toughened high-strength superfine grain pure titanium is obtained after annealing. The strong toughness of the pure titanium prepared by the method is far higher than that of coarse grain pure titanium,the application of the alloy titanium in the aspect of biological implants and medical instruments can be preferably replaced, and the method is suitable for large-scale preparation of large-size pure titanium.

The invention discloses sweetcane bark fiber and a preparation method thereof. According to the present invention, nodes are removed from the sweetcane bark, the sweetcane bark is cut into small pieces, and clear water is adopt to boil to remove sugar from the sweetcane bark; the sweetcane bark is subjected to acid boiling in a mixed solution comprising hydrochloric acid and formic acid, and water washing; after the water washing, the sweetcane bark is subjected to alkali boiling, water washing, neutralization with a diluted acetic acid solution, drying and other processes to obtain the sweetcane bark fiber, wherein the fiber crystal structure is the cellulose I type, the crystallinity is 50-60%, the equilibrium moisture regain under the standard atmospheric condition is 8-13%, the average diameter of the single fiber is 16-20 mum, and the average diameter of the bundle fiber is 150-170 mum. With the present invention, the raw materials for extracting the sweetcane bark fiber have wide sources, the processing cost is low, the fiber has characteristics of good moisture absorption and biodegradability, and the fiber provides broad prospects for preparations of nonwoven materials or composite materials.

The invention provides a method for preparing a 6061 aluminum alloy fine crystalline material. The method comprises the following steps: (1) taking and heating a 6061 aluminum alloy bar; (2) loading the heated 6061 aluminum alloy bar to a machine, and extruding the bar at an extruding temperature of 220-370 DEG C under an extrusion ratio of 10-30; (3) cooling the extruded bar with water to room temperature; and (4) performing offline solid solution treatment: performing the offline solid solution treatment at 480-570 DEG C to obtain the 6061 aluminum alloy fine crystalline material. The preparation method can realize the transformation of the crystal grain type from a fiber crystal to recrystallization in order to form a fine recrystallized structure, and the fine recrystallized structurehas a beautiful appearance and excellent mechanical properties after being oxidized.

The invention discloses a recycling method for high-nitre brine in the transferring and mining course of mirabilite wells. The method comprises the following steps: (1) pretreating high-nitre brine; (2) performing a chemical synthesis course; (3) performing filtration and separation; (4) performing multi-stage washing; and (5) blending plaster pulp. According to the method disclosed by the invention, the high-nitre brine is used as a raw material and have a combination reaction with a calcium chloride solution to generate precipitate calcium sulfate and high-purity brine, the precipitate calcium sulfate is washed to be prepared into pulp to be used as a raw material of plaster products and a raw material for producing inorganic fiber crystal whiskers, and liquid phase brine can be used asraw materials of vacuum salt manufacturing and alkali manufacturing trade; the whole course is a treatment solution of the high-nitre brine in the transferring and mining project of the mirabilite wells, the comprehensive utilization that the high-nitre brine is converted into the high-purity brine can be realized, besides, calcium sulphate dihydrate slurry which can be used as raw materials for producing inorganic fiber materials having high added value can be produced.

This invention discloses a flame retardant filling of PAL material used in soakage solution processing wood materials to increase the flame retardant performance including the functions: said material enriches SiO2 and the microcosmic state is in a layer and link fiber crystal structure (an alumina octahedron is clamped between two layers of silicon tetrahedrons) and a nm hollow channel, which has fine gas-liquid obstructing performance and fine adsorption performance to smog generated by high temperature and harmful gas.

The invention discloses a line fault detection method and device, which are used for solving the problem that the existing line fault detection device can only detect whether an optical fiber line isconnected or disconnected and cannot judge the reason causing the optical fiber line disconnection. Through the arrangement of the ion air knife and the first lead screw motor, when it is detected that the optical fiber crystal head is inserted into the optical fiber socket, the crystal head elastic piece presses the induction switch, the ion air knife blows out high-pressure airflow with currentelectrons, the high-pressure airflow enables tiny attachments attached to the crystal head to be blown out of the optical fiber crystal head, and the purpose of cleaning the optical fiber crystal headis achieved. Meanwhile, a first lead screw motor drives an ion air knife to blow air up and down at a constant speed, so that tiny attachments adhered to the crystal head are further blown out of theoptical fiber crystal head, and the problem that an existing line fault detection device does not have the function of cleaning electrified tiny attachments is solved; and through the arrangement ofthe sprayer and the rotating plate, the sprayer sprays a cleaning agent stored in the high-pressure water tank onto the crystal head, and stains attached to the crystal head are flushed.

The invention discloses a method for preparing a high-temperature fume dust-collection oxidation-resistant metal fiber sintered felt filtering material. According to the method, a microwave sintering process is adopted, the sintering time is shortened, the heating velocity of a metal fiber sintered felt in the sintering process is effectively increased, and the sintering temperature can be also reduced, so that excessive growth of fiber crystal granules is prevented, the breaking strength of a single fiber is improved, and furthermore the breaking strength of an overall fiber sintered material is improved; and an electroplating method is further adopted to electroplate an amorphous-state plated Ni-P alloy layer on the surface of the metal fiber sintered felt, so that the surface quality of metal fiber felt is improved, defects of the micro-fine fiber surface of the metal fiber feltare eliminated, the oxidation resistance of the fiber felt is improved, and in addition, due to deposition of a Ni-P alloy, the aperture of the fiber felt is smaller and smaller, the air permeability of the fiber felt is degraded gradually, the bubbling pressure is gradually increased, the filtration precision is improved, and industrial use requirements can be completely met.

The invention belongs to the technical field of composite materials, and provides a polycaprolactam composite material and a preparation method thereof. The polycaprolactam composite material comprises the following compositions in parts by weight: 100 parts of polycaprolactam, 10-30 parts of a mineral filling agent, 10-25 parts of PA 12, 0.3-0.5 part of antioxygen, and 3-8 parts of compatilizer, wherein the mineral filling agent comprises the following compositions in parts by weight: 7-9 parts of silicate compound reinforced fiber crystal whisker, 3-5 parts of Cab-O-sil, and 5-7 parts of barium sulfate. According to the invention, during the preparation of the polycaprolactam composite material, the mineral filling agent mainly formed by the silicate compound reinforced fiber crystal whisker, the Cab-O-sil and the barium sulfate is doped, the surface gloss of the polycaprolactam composite material is high, and prime coating and soaking are not needed before electroplating, so that the polycaprolactam composite material can be widely applied to various electroplated products, especially electric appliance shells such as automobile headlamps.

The invention relates to a paper-making white mud based artificial stone preparation method, and belongs to the technical field of waste reuse. Paper-making white mud is used as a base material and milled and mixed with dolomite powder and medical stones to increase activity, citric acid is used for adjusting the alkalinity of mixture and acidizing the mixture, formation of micropores is increased, tetrabutyl titanate and silane coupling agents are added to modify the mixture, compatibility of the mixture and low-density polyethylene is enhanced, the mixture is mixed with the low-density polyethylene, so that the space among the micropores is filled with the low-density polyethylene, strength and water resistance are enhanced, the mixture is finally mixed with cement, bamboo fibers and the like, mixed materials function as micro-crystals, a space mesh structure is filled with the mixed materials, so that solid gel and fiber crystals grow, matrix compaction is increased, and finally, vibration, drying, demolding and maintenance are performed to prepare artificial stones. The paper-making white mud is sufficiently used, resource utilization of waste is realized, and the prepared artificial stones are simple to manufacture and low in cost.

The invention discloses a method for manufacturing bamboo fiber filter paper, and the method comprises the following steps: mixing bamboo fiber crystals, acrylic resin particles with a porous structure and an aqueous solution of a foaming agent; under the condition of high temperature, introducing a gas to form a gel-like crosslinked polymer; drying the gel-like crosslinked polymer; pulverizing the crosslinked polymer, adding carboxymethyl cellulose, mixing with a large amount of hot water for agglomeration, and recovering to a hydrogel product again to form an aqueous solution; pulverizing the crosslinked polymer, adding carboxymethyl cellulose, and providing a base material to be immersed in the aqueous solution; spraying a surface cross-linking agent to the surface of the base materialafter the impregnation is completed; and drying. The method has the beneficial effects that the gel-like crosslinked polymer is formed by combining the bamboo fiber crystals with the acrylic resin particles, and then the gel-like crosslinked polymer is combined with the carboxymethyl cellulose after the gel-like crosslinked polymer is formed, the acrylic resin can help the bamboo fiber and the carboxymethyl fiber to be more combined, and the filtering capability of the filter paper can be improved by soaking in a new aqueous solution.

Belonging to the technical field of smoke suppression, the invention discloses a preparation method of a smoke suppressant. Sepiolite powder involved in the invention is a magnesium-rich silicate compound, and can produce magnesium hydroxide crystals and phosphate under the action of ammonia gas and phosphate, the micro-porous structure in sepiolite itself is filled with magnesium hydroxide crystals, sepiolite powder is rich in high-temperature resistant silicate fiber crystals, polymer molten drops do not drip easily under the action of large molecular action force, thus keeping the integrityof the polymer matrix skeleton, and achieving flame retardant purpose. The melamine and sodium pyrophosphate in the smoke suppressant react to generate reacts with melamine pyrophosphate, a sepiolite-based smoke suppression carrier can expand during combustion at a high temperature state to coat melamine pyrophosphate, the residual carbon rate increases, and the smoke emission decreases, thusreaching the purposes of flame retardance and smoke suppression. The method provided by the invention uses a ferrous sulfate solution and hydrogen peroxide to oxidize corn starch, and improves the compatibility of modified corn starch and the polymer resin.

The invention discloses a preparation method for a high-toughness plastic straight ruler and belongs to the field of study article preparation. The preparation method comprises the steps that bamboos are sliced into bamboo skins at first, the bamboo skins are soaked with biogas liquid, bamboo fibers are activated through enzymes produced by microorganisms in the biogas liquid, and then the bamboo skins are exposed under the sun to be aged, so that the binding force among the bamboo fibers is further reduced; the bamboo skins are mixed with an NaOH solution at a high temperature, and sliding and swelling of microfiber layers are facilitated; processing is conducted through liquid nitrogen, so that ice crystals are formed in fiber cells; grinding is conducted through a stone mill, so that the ice crystals in the cell walls are ruptured due to the pressure effect, and the fibers are separated into micro-nano fiber crystal whiskers which are mixed with special-shaped polyethylene powder obtained through polymerization under the electric field condition according to the proportion; and after injection molding and grinding are conducted, scales are printed, so that the high-toughness plastic straight ruler is obtained. The high-toughness plastic straight ruler obtained through the preparation method benefits from the high toughness of the bamboo fibers and is high in impact strength and not prone to being broken, the service life is greatly prolonged compared with that of a traditional plastic straight ruler, and large-scale application and popularization can be achieved.

A crystalline silicon carbide fiber containing silicon carbide and boron nitride, the crystalline silicon carbide fiber having a content of Si of 64% to 72% by weight, a content of C of 28% to 35% by weight, and a content of B of 0.1% to 3.0% by weight, and including, at a surface portion, a composition gradient layer in which a content of silicon carbide increases while a content of boron nitride decreases toward a depth direction.

The invention discloses controllable preparation of a composite crystal form three-dimensional dendritic red phosphorus elementary substance photocatalyst and application of hydrogen production through water decomposition, and belongs to the technical field of catalysts. A controllable preparation process of chemical vapor deposition (CVD) is adopted, amorphous red phosphorus (RP) is used as a precursor, and under the participation of a metal bismuth (Bi) cocatalyst, the three-dimensional dendritic red phosphorus simple substance photocatalyst (DRP) with a composite crystal structure is successfully prepared. The DRP photocatalyst is composed of an RP nanowire ('trunk ') in a Hittorf crystal form and an RP nanorod ('branch') in a fiber crystal form, so that a heterojunction structure with a composite crystal form is constructed, and separation and transfer of photo-generated charges are facilitated. The DRP elementary substance photocatalyst shows excellent visible light water decomposition hydrogen production performance (1027 [mu] mol h <-1 > g <-1 >) and stability.