171results about How to "Cheap to prepare" patented technology

The invention relates to a composite material, and particularly relates to an anti-aging plastic wood composite material and a preparation method thereof. The anti-aging plastic wood composite material of the invention is characterized in that the composite material is prepared by the following raw materials by mass: 20%-35% of plastics, 20%-70% of natural wood fibers, 5%-45% of a fire retardant, 1%-10% of a compatibilizer, 0.1%-3% of a lubricant, 0.5%-3% of a plasticizer, 0.1%-2% of a anti-aging filling material, and 0.5%-3% of a coloring agent. According to the invention, the reinforcing anti-aging filling material is added into the plastic wood composite material, which provides the plastic wood profile with both general functions and superpower anti-aging performance, effectively enhances the surface anti-aging performance of the plastic wood profile, and improves the service life of the plastic wood product.

The invention belongs to the technical field of high-polymer materials, and particularly relates to a polypropylene (PP) electret master batch material, a method for preparing the same and applicationof the polypropylene electret master batch material. The PP electret master batch material is mainly prepared from components including, by weight, 50-100 parts of polypropylene, 8-50 parts of electret agents, 0-3 parts of compatibilizers, 0.05-0.35 part of antioxidants and 0-3 parts of anti-aging agents. The components are molten and granulated to obtain the polypropylene electret master batch material. The polypropylene electret master batch material, the method and the application have the advantages that resin and auxiliaries are uniformly mixed with one another in melt blending modes, accordingly, obvious electret effects can be realized by melt-blow non-woven materials produced from the polypropylene electret master batch material prepared by the aid of the method, the melt-blow non-woven materials are high in filter efficiency and low in filter resistance, and the like.

A retainer clip for retaining a component to a board and a handle for handling the same.

The present invention relates to an aluminum pigment at least partially coated with a lubricant, wherein the aluminum pigment has a) a water coverage of 40,000 to 130,000 cm2/g, b) an average thickness calculated from the water coverage and a thickness count by scanning electron microscopy The average thickness calculated from the h50 value determined by the cumulative penetration curve is 30-100nm, c) counted from the measured thickness of the scanning electron microscope, according to the equation Δh=100×(h90-h10)/h50, based on the accumulation of the corresponding relative frequency of occurrence Calculated from the penetration curve, the relative width Δh of the thickness distribution is 70%-140%, d) the aspect ratio is greater than 200 e) calculated from the specific surface area and water coverage measured by the BET test method, according to the equation: BET value/2×water coverage The calculated roughness value is 0.30-0.9. The invention also relates to a method for producing said aluminum pigment and to the use of said aluminum pigment.

The invention discloses a preparation method of a thin-layer composite film based on gas-liquid interface reaction. The preparation method comprises following steps: 1, floating of a hydrophobic polymer porous base film on the surface of a deposition liquid is carried out, reaction is carried out for 0.1 to 12h at 10 to 90 DEG C so as to form a thin film structure on a polymer porous base film at a gas/liquid interface, wherein the deposition liquid is a solution of a polyphenol monomer and a polyamine monomer, and pH value of the deposition liquid ranges from 6 to 10; and 2, the polymer porous base film obtained in step 1 is delivered into a cross-linking agent solution for cross-linking reaction, so that a selective functional skin layer is formed thin film structure crosslinking of the polymer porous base film, and the thin-layer composite film based on gas-liquid interface reaction is obtained. The preparation method is high in controllability. The thin-layer composite film can be applied in fields such as nanofiltration, reverse osmosis, forward osmosis, or osmosis gasification.

The invention relates to composite materials, in particular to a tire rubber powder modified recycled plastic and a preparation method thereof. The invention aims to solve the existing zero pollution reclamation difficulty and other problems of waste tire rubber, waste plastics, etc. The tire rubber powder modified recycled plastic provided in the invention is prepared from the following raw materials by mass: 20%-70% of waste plastics, 10%-40% of tire rubber powder, 5%-26% of a flame retardant, 1%-10% of a compatibilizer, 0.1%-3% of a lubricant, 0.5%-5% of a plasticizer, and 0.05%-4% of an antioxidant. In the invention, by modifying tire rubber powder to prepare the recycled plastic, the resource utilization rate of waste tire rubber powder is enhanced, a new application technology of rubber powder is developed, the application scope of rubber powder is expanded, and at the same time, the prepared recycled plastic still has good mechanical properties, and the production cost of the recycled plastic is greatly reduced, so that the application fields of recycled plastics can be expected to be further expanded.

The invention discloses a nitrogen-doped graphene catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: drying and dehydrating glucose and urea, and mixing with melamine, wherein the mass ratio of the urea to melamine is 2-4; uniformly grinding the mixture, and calcining the mixture into a muffle furnace at the temperature of 550 DEG C for 3 hours; cooling and grinding uniformly, adding the mixture into a tube furnace, introducing into nitrogen protection, calcining at the temperature of 850-1000 DEG C for an hour, thereby obtaining the nitrogen-doped graphene catalyst. According to the in-situ nitrogen-doped graphene disclosed by the invention, the used raw materials are low in price, the method is simple, the yield is high, and graphite-like nitrogen doped graphene with the highest ratio is obtained by changing the rate of the raw materials and the temperature, so that the catalyst has a good oxidation-reduction effect, and expensive Pt can be replaced to a certain degree.

The invention relates to a laminated composite material synthesized of warp-knitted and textile materials and PVC and discloses PVC laminated composite cloth comprising films formed through extrusion method. The PVC laminated composite cloth comprises base cloth, a bottom film and a surface film, wherein the bottom film and the surface film are arranged at the two sides of the base cloth and are both PVC thin films The PVC laminated composite cloth has the advantages that the cost is low, the applicability is strong, the performances are good, specifically, the peeling strength, the elasticity, the tensile strength and the tearing strength are obviously improved and the waterproof performance, the flame-retardant performance and the ageing resistance are excellent. The invention also discloses a preparation method of the PVC laminated composite cloth comprising films formed through extrusion method. The preparation method comprises the following steps of: firstly compositing the specific bottom film prepared by extrusion and the base cloth, then compositing with the specific surface films prepared by extrusion. The preparation method disclosed by the invention has the advantages that since no boiler is used and carbon dioxide is not exhausted, air pollution is hardly caused; only cooling circulation water is used, so water pollution cannot be caused; and the process is simple, the energy consumption is low, the popularity rate is high, the cost is low, the profit margin is large and the application prospect is wide.

The invention provides a slurry composition suitable for the manufacture of Si.sub.3 N.sub.4 sintered bodies, wherein the dispersion properties and oxidation resistance of Si powder in water are improved, resulting in the homogenous dispersion of a sintering aid powder and a fine Si powder with less oxygen. Si powder, a sintering aid, water in an amount of 50 to 90 wt % relative to the total weight of the composition, and a surface coating agent in an amount of 0.05 to 10 wt % relative to the Si powder are added, the pH is adjusted to between 3 and 8, and the ingredients are milled and mixed. Trivalent metal ions such as Fe or Ga, or a polysiloxane with a BHL of no more than 10 is used as the surface coating agent. The resulting slurry composition can be used to prepare Si.sub.3 N.sub.4 sintered bodies with better electrical, thermal, and mechanical properties.

The invention belongs to the technical field of sensor manufacture and relates to a quick response and recovery type barium titanate nanofiber humidity dependent sensor. Humidity response layers formed by a collection method on a base plate using a glass, mica or sapphire material as a non-conducting substrate is barium titanate nanofibers prepared by electrostatic spinning; the base plate is encapsulated in a sealed cavity type housing; electrode lead wires are led out through electrodes by using coaxial cables; two electrodes are fixed on the humidity response layers at two ends of the base plate respectively; and one electrode is connected in series with a current meter through a lead wire and then is connected with an end point of a rheostat, which is connected in parallel with a direct current power supply, while the other electrode is connected with the other end point of the rheostat, which is connected in parallel with the direct current power supply, so that the humidity sensor is formed. The quick response and recovery type barium titanate nanofiber humidity dependent sensor is characterized by simple manufacturing method, low cost, high production efficiency, large humidity sensitive width, high sensitivity and quick recovery and can be widely applied in various fields such as forestry and animal husbandry and the like.

The invention provides a preparation method of a catalyst for propane catalytic combustion elimination. The preparation method comprises the following steps: doping metal species into nickel oxide by adopting a coprecipitation method, dropwise adding a 2mol/L sodium carbonate or potassium carbonate solution into a 0.2mol/L precursor mixed solution to form a precipitate, wherein a solvent of the precursor mixed solution is 10wt% alcohol solution, wherein the volume ratio of the sodium carbonate or potassium carbonate solution to the precursor mixed solution is 2:5; dropwise adding 5-8ml of 30% hydrogen peroxide while dropwise adding a sodium carbonate or potassium carbonate precipitator, wherein the volume ratio of the added hydrogen peroxide to the precursor mixed solution is 1:20; and performing suction filtration on the precipitator, drying at 50-100 DEG C, and roasting at 250-450 DEG C roasting to obtain catalysts doped by different metals for propane catalytic combustion elimination. The catalyst is prepared by adopting the coprecipitation method, and is low in price; the preparation method is simple.

The invention discloses a melt-blown polypropylene electret master batch which comprises the following components in parts by weight: 45-100 parts of polypropylene, 5-70 parts of an electret, 1-5 parts of a compatilizer, 0.01-1 part of an antioxidant, and 0.01-5 parts of an anti-ultraviolet agent. The invention also discloses a preparation method of the melt-blown polypropylene master batch material. The master batch has the following beneficial effects: polytetrafluoroethylene subjected to oxidation by ozone and surface modification by a coupling agent is used as an electret, polypropylene resin and corresponding auxiliaries are mixed in a melt blending granulation mode to obtain a melt-blown polypropylene electret master batch material, and a non-woven fabric fiber product produced fromthe master batch and a pure polypropylene raw material has the advantages of being obvious in electret effect, high in filtering efficiency, small in wind resistance and the like. The melt-blown polypropylene electret master batch and the preparation method thereof have the advantages of simplicity, quickness and cheapness, and are suitable for large-scale batch production.

The invention discloses a preparation method for an ionic liquid hybrid imprinted material. The preparation method comprises the following steps: uniformly mixing a silylating reagent containing an electronegative group at the tail end of an alkyl chain and an imidazole compound in a molar ratio of 1:(1-3) and carrying out a reaction to obtain an ionic liquid; sequentially adding template molecules, functional monomers, a crosslinking agent containing 2-3 double-bond functional groups and an initiator into the ionic liquid, and fully dissolving the components to obtain an organic phase; dissolving a silane crosslinking agent in an organic solvent, and sequentially adding water and ammonia water to dissolve to obtain an inorganic phase; introducing nitrogen, adding the organic phase into the inorganic phase, and carrying out a reaction at 60-80 DEG C for 8-36 hours; washing out the template molecules; and washing the liquid to neutral and drying the liquid to obtain the ionic liquid hybrid imprinted material. The material prepared by the preparation method disclosed by the invention can be used for extracting and separating various and multiple types of targets and the whole preparation process is mild in reaction condition, relatively low in equipment demand, simple in process, convenient to operate, environmental-friendly and suitable for large-scaled production, popularization and application.

A heat exchanger network has at least one passage for a coolant and a heat exchanger provided with such a core. The coolant passage has a plurality of flow channels which are disposed in parallel and delimited by separating walls and connected to each other in an undulating shape at their ends by deflection zones. The flow channels are formed by at least one lamella which has separating walls and a meandering cross-section. The deflection zones are formed by recesses which are provided at the ends of the separating walls.

This invention relates to an antisense oligonucleotide-carbon nanotubes medicine carrier which comprises carbon nanotube casing and antisense oligonucleotide. The preparation method comprises oxidizing multi-wall carbon nanotube with strong acid to carry carboxyl on the shell of pipe, cutting to 50-200nm with diameter of 10-50nm with ultrasound, adding poly-cationization bichloride to embellish on shell of carbon nanotube, and assembling antisense oligonucleotide to carbon nanotube. The preparation method is simple and rapid. The medicine carrier has high transfection efficiency, high target effect, and good effect in inhibiting tumor cell. Targeted bimolecular or medicine with carbon nanotube as carrier material aim at different biological system can be applied for treating tumor or genetic diseases.

Described are shoes with a rigid heel portion, and a collar arranged above the rigid heel portion. The collar includes a first collar portion and a second collar portion, the first collar portion and the second collar portion are configured to partially engage an ankle of a wearer of the shoe on a lateral side, a medial side, and a rear side of the ankle when worn. The first collar portion is more flexible than the rigid heel portion, and the second collar portion is more flexible than the first collar portion.

The invention provides a titanium modified Fe3O4 magnetic nano-particle, a preparation method and the application thereof. The preparation method specifically comprises the following steps: in a eutecticevaporate solvent of choline chloride and urea, taking ferrite as an iron source, tetrabutyl titanate as a titanium source and air as an oxidizing agent, and using a precipitation oxidization process to synthesize the titanium modified Fe3O4 magnetic nano-particle in one step. According to the preparation method provided by the invention, the obtained material has excellent catalytic degradation capacity (for example, under the conditions of room temperature and neutral pH, the color removal rate for a 0.01 mmol/L methylene blue solution within 2h reaching 93.8%, and the removal rate for a20 mg/L Ciprofloxacin solution reaching 96.5%) for organic waste water, is easy for magnetic separation recycle and stable in reuse performance, and is a novel magnetic environmentally-friendly material with low cost, quick and convenient operation, obvious effect and wide application prospect.

The invention relates to a method for preparing high-efficiency phosphorus fertilizer without acidification. In the method, the material is ground by a vibration milling wet method to prepare super fine activated phosphate rock powder which has high specific surface area, the particle size is 90 percent and can passes through a 400-mesh sieve, the super fine activated phosphate rock powder is mixed with biological organic fertilizer according to the weight ratio of between 1 to 4 and 1 to 1, and pseudomonas fluorescens is added for mixing stockpile manure and fermenting so as to prepare the non-acidification high-efficiency phosphorus fertilizer. The method has the advantages of preparing the high-efficiency phosphorus fertilizer by physical and biological methods, reducing the environmental pollution, solving the problems of environmental pollution, high cost and the like existing in the prior phosphorus fertilizer preparation method and lowering cost of producing the phosphorus fertilizer, along with simple technique; moreover, in long-term usage, the phosphorus fertilizer can prevent the sealing of soil, improve the soil and enhance the soil fertility.

The invention provides a magnetic affinitive nanomaterial for separating and purifying GST (glutathione S-transferase) tag fusion protein as well as a preparation method and application thereof. The magnetic affinitive nanomaterial comprises ferroferric oxide nanoparticles and a polydopamine coating which wraps the ferroferric oxide nanoparticles, wherein reduced glutathione is fixed on the surface of the polydopamine coating. According to the magnetic affinitive nanomaterial provided by the invention, the specific surface area is relatively large, the rate and quantity of bonding between the nanomaterial and protein molecules are increased, the superparamagnetic property of the nanoparticles simplifies the operation strength of a separation process, the preparation method is simple and low in cost, and the process for separating and purifying the GST fusion protein is simple, convenient, quick and effective. The nanomaterial has wide application prospect and practical value in the field of biotechnology.