41results about How to "Overcome the disadvantage of easy falling off" patented technology

This invention discloses a method for synthesizing organic-inorganic bentonite composite. The method comprises: utilizing bentonite as the main material, performing inorganic modification through cation-exchange reaction by using hydroxyl aluminum aqueous solution, torrefying to obtain hydroxyl-containing aluminum-pillared bentonite with high porosity and high specific surface area, and reacting between the hydroxyls and silylation agent to graft silane groups onto aluminum-pillared bentonite and obtain organic-inorganic bentonite composite. The organic-inorganic bentonite composite has both the advantages of inorganic pillared bentonite such as high porosity and high specific surface area, and those of organic bentonite such as high organic carbon content and high hydrophobicity thus can be used to treat organic waste gases and wastewater with a good effect by surface adsorption as well as distribution.

The invention relates to an antibacterial reverse osmosis composite membrane, which comprises a reverse osmosis membrane and a polymer cross-linking coating. An antibacterial agent in the polymer cross-linking coating is composite inorganic powder containing nano-silver. In the composite inorganic powder, mass ratio of silver to attapulgite is 10/100-100/100, and particle size of nano-silver is 3-100 nm. The invention also relates to a preparation method of the antibacterial reverse osmosis composite membrane. The antibacterial reverse osmosis composite membrane provided by the invention has advantages of good antibacterial property, long life, etc.

The invention relates to paint for a surface coating of a section, in particular to acrylic ester modified high weather resistance paint and a preparation method thereof. The paint consists of the following raw materials in weight portion: 16 to 70 portions of matrix resin, 10 to 55 portions of active diluent, 9 to 50 portions of solvent, 0.3 to 0.8 portion of foam suppressor, 4 to 10 portions of light initiator, 3.5 to 8 portions of anti-wear additive, 0.4 to 1 portion of flatting agent, 0.4 to 1.2 portions of dispersing agent, and proper amount of pigment. The paint improves the quality of a PVC plastic colorful section and enlarges the application range of the material. The method reasonably prepares the acrylic ester modified high weather resistance paint used on the surface of the section by using a unique acrylic ester modified high weather resistance paint formulation. The invention provides the acrylic ester modified high weather resistance paint with new formulation to solve the problems of poor weather resisting property of the product and poor adhesive force of the paint during stamping after the product is stamped. The application of the paint successfully realizes high quality and high taste of the colorful section, and realizes technical renovation and great-leap-forward development of the industry of PVC colorful section.

The invention discloses a method for bonding carboxymethyl chitosan bioactive molecules on the surface of magnesium alloy. According to the method, a dopamine polymer film is formed on the surface of the magnesium alloy subjected to cathode liquid phase plasma processing by means of spontaneous deposition and polymerization of dopamine hydrochloride in alkaline ethanol solutions, and the carboxymethyl chitosan can be bonded on the surface of the magnesium alloy through the amidation between amidogen and carboxyl in a dopamine polymer medium layer. According to the method, the operation is easy, a carboxymethyl chitosan film layer formed on the surface of the magnesium alloy is flat and smooth and not prone to falling off, corrosion resistance and biocompatibility of the magnesium alloy can be effectively improved, the defects that the surface of a coating obtained through the cathode liquid phase plasma processing is rough, multiporous and crackled are overcome, the defect that a polymer coating formed through a physical modification method is prone to falling off is also overcome, and therefore the method lays the foundation for magnesium alloy to be used as biomedical materials.

The invention provides a making method for an olaquindox molecularly imprinted membrane electrochemical sensor. The surface of a glassy carbon electrode is coated with a composite membrane, and the composite membrane is composed of a polydopamine-coating graphene complex, polypyrrole and a molecularly imprinted polymer. The making method provided in the invention has the advantages that two properties of dopamine are skillfully used: the first property is adhesion and dispersion, the polydopamine-coating graphene composite membrane has the adhesion of dopamine, overcomes the shortcoming of easy falling of the traditional dispensing method and also has a large specific surface area of graphene, and the second property is a functional monomer, dopamine is polymerized to form a molecularly imprinted membrane, and a molecularly imprinted hole corresponding to an olaquindox molecule is provided. Pyrrole polymerization can increase the conductivity but also further enhance the stability of the polydopamine-coating graphene layer. The shortcomings of complex pretreatment and expensive instrument of a large instrument used in the traditional olaquindox detection method and time consumptionof the traditional synthetic molecularly imprinted method can be overcome.

This invention discloses a ceramic-carbon heating pipe having a heating matrix, an electrode lead-out rod is connected with both ends of matrix sleeved with a protection pipe, insulation and heat conduction powder is filled between matrix and protection pipe. Its electric-heat transformation rate reaches as high as 99.6% and is oxidation resistant, not easy to be broken with a long work life to 50000 hours, 1.5 times higher than that of the national standard.

A composite fiber saggar used for synthesis of a lithium ion battery cathode material and a preparing method thereof are disclosed. A matrix-enhanced composite fiber saggar material includes mullite,fibrous mullite, cordierite, magnesium aluminate spinel, fibrous alumina, fibrous magnesium oxide, zirconite, ceric oxide, and zirconia-yttrium oxide fibers. A synthetic process is simple, a sinteringprocess is easily controllable, and a prepared material is good in uniformity. The saggar has obviously improved resistance to high temperature and to corrosion than traditional saggars, obviously improved times of repetition and product quality, prolonged service lifetime and excellent thermal shock resistance. A surface layer of the saggar is effectively protected from stripping. The saggar facilitates production cost reduction of the lithium ion battery cathode material, thus increasing economic benefit.

The invention discloses intraocular foreign body forceps, comprising hand shanks, forceps claw sections and an outer sleeve, wherein each forceps claw section comprises a fixed tube and a non-magnetic forceps claw; each fixed tube is fixedly connected with each hand shank; each non-magnetic forceps claw is fixed at the front end of each fixed tube; the outer sleeve is sleeved on the outer sides of the fixed tubes and can be driven to slide back and forth, so as to control the forceps claws to get close to be folded or depart to expand; a magnetic component is fixedly arranged at the front end of each fixed tube, and is contained into the outer sleeve when the forceps claws get close to each other; at least the end part of the magnetic component is exposed out of the port of the outer sleeve when the outer sleeve slides backwards to control the forceps claws to expand. By adopting the intraocular foreign body forceps, the difficulty in the process of taking out an irregular magnetic foreign body inside the ball is solved, the defects that the foreign body is unstable and easy to fall off are overcome, the stability in the process of taking out the foreign body is increased, the achievement ratio of operation is improved, the operation time is reduced, the surgical risk and complication are reduced, and the intraocular foreign body forceps are safe to operate.

The invention discloses a preparation method of europium-bonded fluorescent nano silica microsphere through light curing. The europium-bonded fluorescent nano silica microsphere is prepared by bonding europium acrylate to a nano silica microsphere matrix through a UV curing mode. Compared with the conventional preparation method, the provided preparation method has the advantages of simple operation, short reaction time, and environment-friendliness. The prepared europium-bonded fluorescent nano silica microsphere has a good thermal stability, is easy to process and mould, and has a wide application prospect in the field of biological fluorescence or medicine.

The invention discloses a red titanium dioxide photoelectrode with a wedge-shaped structure and preparing and application of the red titanium dioxide photoelectrode and belongs to the technical field of photoelectrode preparing and photoelectric catalysis. According to the red titanium dioxide photoelectrode, a simple hydrothermal method is used for the first time, foam titanium is used as a substrate and a titanium source, and the red titanium dioxide photoelectrode with the wedge-shaped structure is finally prepared through alkali liquor etching, hydrogen ion substitution and roasting. The defect that a traditional catalyst is prone to falling is overcome, the titanium dioxide photoelectrode which is macroscopically red is obtained for the first time, and light with the wave length of 400-500nm is limited in a micro-nanometer structure due to color formulation. Thus, the light absorbing ability of titanium dioxide in a visible light region is improved, and the titanium dioxide also has strong absorbing ability in a near infrared region.

The invention discloses a preparation method of magnetic activated carbon. The method includes the following steps that firstly, bamboo scraps, lauric acid, K2CO3, FeSO4.7H2O, H2O2 and water are obtained and mixed according to a certain mass ratio of 1: (0.1-0.5): (10-50): (10-50): (10-50): (100-500), dipping is performed for 12-24 hours after ultrasonic treatment is performed for 0.5-2 hours, and a mixture A is obtained after drying; secondly, microwave heating is performed, wherein the mixture A is transferred into a high-pressure reaction kettle with the pressure being 0.01-0.05 mPa, then the reaction kettle is placed in a microwave oven with the power being 200-1000 w, heating is performed for 60-200 s, and a mixture B is obtained; thirdly, filtering and drying are performed, wherein the mixture B is placed in a 0.2 micron PTFE membrane filter to be filtered, an obtained filter cake is dried for 20-200 min at the temperature of 80-150 DEG C, and the magnetic activated carbon is obtained. In the activating process of the activated carbon, generated Fe3O4 particles enter an activated carbon structure, it is guaranteed that the requirement for magnetism is met, and the defect that magnetic particles are prone to disengagement is overcome.

The invention provides a drug-loaded microsphere-microneedle array for uniform drug administration, a preparation method and application. According to the method, based on a microfluidic chip, hydrogel drug-loaded microspheres with uniform particle size and good monodispersity are prepared, the drug-loaded microspheres are placed in a microneedle template filled with a hydrogel solution, and the polymeric microsphere-microneedle array is demolded after solidification. The drug-loaded microspheres in the prepared microsphere-microneedle array have good sphericity and drug release rate, and microneedles penetrate into the skin to assist the microspheres to be uniformly distributed subcutaneously, so that the purpose of uniform and convenient transdermal drug administration is achieved; and the prepared drug-loaded microsphere-microneedle array has the advantages of being good in drug encapsulation, low in preparation cost, easy to operate and the like, and is high in practicability and suitable for popularization.

The present invention belongs to the field of drinking water tube, in particular, it relates to a connecting tube for water-driving machine. It is characterized by that said connecting tube is a hose made up by using thermoplastic elastomer high-molecular material through radiation crosslinking process.

A flexible connecting pipe for the water drinking appliance is made of high-molecular material through irradiated cross-linking to form the cross-linked reticular structure. Its advantages are no poison and odor, and firm connection because of its shape memory function.