386results about How to "Special structure" patented technology

A roaster comprises a main container equipped with the space in the inner portion; an upper supporter including a flame hole equipped at the side facing the bottom side of the main container, and a roasting plate supporting part equipped at the circumference position of the flame hole, and is combined to the main container; a fuel vessel which has a fuel filling part is formed in the inner space and a spacer equipped in the outer periphery position of the fuel filling part, and which is positioned in the main container to be positioned at the opposite direction to the flame hole of the upper supporter and which is arranged as the state separated from the spacer.

The invention provides a grapheme modified polypropylene master batch and a preparation method thereof. The grapheme modified polypropylene master batch comprises the following raw materials in parts by weight: 100 parts of polypropylene particles, 0.01 to 5 parts of grapheme dry powder, 0.01 to 1 part of an antioxidant, 0.1 to 10 parts of a plasticizer, 1 to 10 parts of a light stabilizer, 1 to 10 parts of a lubricant, and 0 to 40 parts of a filler. The preparation method comprises the following steps: performing spraying modification on the polypropylene particles through the grapheme dry powder with static electricity, uniformly mixing the modified polypropylene particles with the rest of constituents, then feeding the mixture into a double-screw extruder for fusing and mixing, and finally extruding for granulation. The method enhances the mechanical property of the polypropylene material under the condition that the heat-conducting property of the polypropylene material is greatly improved.

This invention relates to a method for preparing low-temperature-sintered lithium-niobium-titanate composite microwave dielectric ceramic, which is composed of Li2TiO3 solid solution and M-phase solid solution. The composite microwave dielectric ceramic is prepared from Li2CO3, Nb2O5 and TiO2 at a mol ratio of 5: x: y (x is in 1-2 and y in 4-6), and B2O3 or V2O5 0-5 wt. % by conventional solid-phase reaction. The composite microwave dielectric ceramic has a low sintering temperature (about 1100 deg.C), good dielectric property with a dielectric constant of 34-50, a high Q*f value (Q is quality factor), and a low resonance frequency temperature coefficient, and can be used in sheet dielectric resonator, filter, antenna, balun, etc. when added with a small quantity of low-melting-point oxide, the composite microwave dielectric ceramic has a lower sintering temperature of about 900 deg.C, while its good microwave dielectric property can be maintained.

The invention discloses a method for detecting various pesticide residues in tobacco by utilizing a multiwalled carbon nanotube. The method is characterized in that an organic solvent is used for extraction; the multiwalled carbon nanotube is used as a reverse solid phase dispersion adsorbent; the tobacco samples are purified through vortex and centrifugation; a high performance liquid chromatography-tandem mass spectrum coupled technology and a gas chromatography-tandem mass spectrum coupled technology are combined to realize the synchronous detection of various pesticide residues in the tobacco. According to the method, the multiwalled carbon nanotube is used as the reverse solid phase dispersion adsorbent, so that the purification effect, the influence on the adsorption of the target analyte due to the frequently-used polar adsorbents is eliminated while the matrix effects are reduced, and a cleaner solution is provided to decrease the maintenance of the instrument in the using process; the multiwalled carbon nanotube is low in preparation cost and less in dosage and has the effect of greatly reducing the experimental cost; the method provided by the invention has the advantages of being correct in measurement, high in sensitivity and good in repeatability, and has the effect of satisfying the requirement for rapidly analyzing and detecting the large batch samples.

The invention discloses a bifunctional catalyst containing a multi-stage pore EUO molecular sieve and a preparation method thereof. The catalyst comprises 10 to 90wt% of an H-type multi-stage pore structure EUO molecular sieve, 9.9 to 89.9wt% of a matrix and 0.01 to 2.0wt% of a metal active component. The preparation method comprises: mixing multi-stage pore EUO molecular sieve raw powder, the matrix and a pore-expanding agent, adding an acid solution into the mixture, carrying out mixing kneading shaping, carrying out drying and roasting to remove the pore-expanding agent so that a carrier isformed, and dipping the carrier in a mixed solution containing a metal salt for activation to obtain a shaped catalyst. The multi-stage pore EUO molecular sieve is synthesized by crystallization of along-chain silane compound as a crystallization aid and a double-quaternary ammonium salt as an organic template with a double six-membered heterocyclic group substituted alkane structure. The catalyst exhibits good activity and selectivity in the hydroisomerization reaction of a C8 aromatic hydrocarbon and has a good industrial application prospect and economic value.

The invention discloses a preparation method of a composite antistatic agent for a fiber fabric. The composite antistatic agent for the fiber fabric in the preparation method comprises the following components: a butanol phosphate ester antistatic agent, a terminal hydroxyl hyperbranched antistatic agent, a terminal carboxyl hyperbranched antistatic agent and a terminal quaternary ammonium salt hyperbranched antistatic agent; and the preparation method comprises the following steps: firstly, respectively preparing the butanol phosphate ester antistatic agent, the terminal hydroxyl hyperbranched antistatic agent, the terminal carboxyl hyperbranched antistatic agent and the terminal quaternary ammonium salt hyperbranched antistatic agent; and mixing the four antistatic agents to prepare the composite antistatic agent for the fiber fabric. The preparation method is simple and feasible; and the prepared antistatic agent has a good antistatic effect, good heat resistance and good acid and alkali resistance.

The invention discloses special activated carbon for adsorption separation of chlorine gas and oxygen. A product is prepared from activated carbon by the processes of dipping, drying and baking for decomposing in sequence. The special activated carbon has the physical properties that the bulk density is 0.40-0.45 kg / L, the strength is greater than or equal to 5.5N / mm, the specific surface is greater than or equal to 900m<2> / g, the pore volume is 0.9-1.0 ml / g, and the abrasion is smaller than or equal to 5%. By virtue of the special activated carbon, the related application performance such as the adsorption and separation efficiency and stability, the compression strength and the abrasion resistance quality uniformity of the chlorine gas and the oxygen are improved, and not only is the purity of the products, namely the chlorine gas and the oxygen, is improved, but also the safe and stable operation of an industrial device is facilitated.

The invention discloses a preparation method of a polyamide nanofiltration membrane containing sulfoacid betaine type colloid nanometer particles, and the preparation method comprises the following steps of: preparing colloid nanometer particles by adopting a soap-free emulsion polymerization method; adding to a water phase monomer solution used for synthesizing a polyamide membrane; preparing the polyamide nanofiltration membrane containing the sulfoacid betaine type colloid nanometer particles through an interfacial polymerization method. The polyamide nanofiltration membrane disclosed by the invention keeps high selectivity of the polyamide membrane on inorganic salt and greatly increases the water permeation flux of the polyamide membrane by utilizing the unique nanometer pore structure and good hydrophilicity of the sulfoacid betaine type colloid nanometer particles. Besides, the sulfoacid betaine type colloid nanometer particles have higher pollution resistance and show good stability pollution resistance in the long-term operating process of a filter membrane, thus the prepared polyamide nanofiltration membrane containing the sulfoacid betaine type colloid nanometer particles has high selectivity, permeability and pollution resistance. The preparation method of the polyamide nanofiltration membrane is simple, easy to operate and low in cost and achieves a good industrialized application prospect.

The invention discloses a preparation method for a lithium titanate lithium ion battery. A cathode active substance in a cathode diaphragm of the battery is lithium titanate. During liquid injection, an electrolyte containing ionic liquid and a functional additive is injected for the first time, primary pre-charging and activation are carried out, a commercial lithium ion battery electrolyte is injected for the second time, then secondary activation is carried out, and high temperature charge-discharge cycles and air extracting sealing are carried out so as to obtain the lithium ion battery. According to the invention, activation is carried out twice, the objective of secondary activation is to further reinforce the properties of a solid electrolyte interphase (SEI) film formed at the first time, so formation of a stable and compact SEI film on the surface of a cathode is facilitated, generation of gas in the processes of charging and discharging of the lithium titanate lithium ion battery can be effectively inhibited, and the cycle life and rapid charging and discharging performance of the battery are improved.

The invention discloses a manganese oxide / nickel micro-sphere with a porous structure, and a preparation method and application thereof. The preparation method comprises the steps of adopting manganese acetate and nickel acetate as a manganese source and a nickel source, adopting urea as a precipitator, adopting water and ethylene glycol as solvents, firstly adopting a hydrothermal method for synthesizing a carbonate precursor of manganese and nickel, and then calcining under an argon atmosphere to obtain the manganese oxide / nickel micro-sphere with the porous structure. Manganese and nickel elements in the micro-sphere are distributed uniformly, the sphere is formed by self-assembly of nanoparticles, meanwhile, a lot of staggered nanosheets exist on the surface of the sphere, each nanosheet is formed by overlapping two layers of thinner nanosheets, a gap exists between the layers, and the specific surface area is larger. The porous structure assembled by secondary particles is not only beneficial for full contact of an electrolyte and an active substance, but also effectively adapt to volume expansion of a material in a charging and discharging process, so that the electrochemical performance of the manganese oxide / nickel micro-sphere when being used as a lithium ion battery cathode material is greatly improved. The preparation method provided by the invention is easy and convenient to operate, controllable in reaction conditions, and easy for scale-up experiment.

The invention discloses a preparation method for algae endophytic fungi exocellular polysaccharide, and relates to a biological method for synthesizing polysaccharide. According to the preparation method, purified polysaccharide is separated from blue algae endophytic fungi DT06 serving as production strains through shaking table or liquid-state submerged cultivation fermentation, wherein the blue algae endophytic fungi DT06 are used as the production strains; the strains are collected at December 20, 2010 with a collection number of CGMCC 4460; and the preparation method specifically comprises the following steps of: 1, performing liquid fermentation by using the blue algae endophytic fungi DT06; 2, performing exocellular polysaccharide separation; and 3, purifying the polysaccharide to finally prepare the pure fungi exocellular polysaccharide product which is shown as the following structural formula. The endophytic fungi DT06 used in the method are separated from the blue algae; and the defects of narrow raw material source, low probability of separation and high production cost existing in the prior art are overcome.

The present invention provides a preparation method of double electrochemistry working electrode structure with shielding crust. Epoxy on outside is used as substrate based on the inner layer as preparation working electrode, and carbon nano-tube is used as conductive filler to process a choiceness Hertzian waves shielding layer. The said working electrode has special structure, dielectric property and strong electromagnetic shielding effectiveness, at the same time, has merits of light quality, adjustable conductivity, strong high temperature oxidation resistance and good stability. In addition, the said working electrode is a working electrode with electromagnetic shielding technique, which is convenient for operation of electrochemistry test and is a promising electromagnetic shielding technique, and has widely use value and application prospect in electrochemistry field.

The invention discloses a blueberry fish oil capsule, belonging to the field of foods. The blueberry fish oil capsule is health complementary food, each 500mg of products comprises seven ingredients including blueberry extractive, grape seed extractive, marigold extractive, eyebright extractive, soya bean lecithin, wheat-germ oil and fish oil Omega unsaturated fatty acid. The invention is not harmful for the health of human body, and is a health product for the health of eyes.