40results about How to "Control penetration" patented technology

Inorganic / organic nanocomposite bioactive porous material and its preparation method. The material is composed of hydroxyapatite / medical polyamide 66 composite material with a weight ratio of (0.25-1.5) / 1, which contains interpenetrating pores with a pore size of 1-300 microns, and the total volume of the pores accounts for 30% of the total volume of the material- 70%. During the preparation, the nano-hydroxyapatite and the medical polyamide 66 are mixed according to the said ratio, and the particle size and the proportion in the total volume are respectively related to the desired pore diameter and porosity in the obtained material. Compatible medical water-soluble salt particles are mixed evenly, and after solidification and molding under the pressure of 3-8MPa and temperature of 260-290°C, they are fully dissolved in water to remove the water-soluble salts present in the solidified material. Such components can be used to obtain bioactive porous materials with desired pore size and porosity. The material can have good biological function, porosity and mechanical strength that can meet the requirements of mechanical properties.

The invention relates to an electro-oxidation ozone generator. It includes the shell that constitutes the electrolytic cell and the core component of the electrolytic electrode. The core component of the electrolytic electrode is composed of an anode membrane permeation electrode, a cathode membrane permeation electrode, and an ion exchange membrane sandwiched between the anode membrane permeation electrode and the cathode membrane permeation electrode. The membrane permeation electrode consists of a microporous plate base layer covered on the base layer and a multifunctional dynamic membrane layer on the surface of the middle layer. The cathode membrane permeation electrode is composed of a microporous plate base layer plus an intermediate layer and a device It is composed of a multifunctional dynamic film layer on the surface of the middle layer, or is composed of a microporous plate base layer and a multifunctional dynamic film layer arranged on the surface of the microporous plate base layer. It has the following characteristics: 1. Using the selective permeation function membrane to infiltrate the electrode, effectively control the penetration of the raw material liquid to the catalyst side, realize the balanced two-way permeation effect, reduce the resistance and energy consumption of the generator, and improve the efficiency. 2. The controllable internal pressure structure and self-balancing gas phase transmission channel ensure that the electrode reaction is carried out under controllable pressure, so that the gas precipitated from the anode has an ozone concentration of > 20%, and the ozone generation efficiency is high. Third, the equipment is simple to manufacture and low in cost.

The invention discloses a microcapsule fire-extinguishing agent. The microcapsule fire-extinguishing agent is composed of, by weight percentage, 82%-95% of a capsule inner core main material, 0%-5% of an additive and 2%-15% of a capsule shell, wherein the capsule inner core main material is an aqueous solution of water-soluble inorganic alkali metal potassium salt and / or water-soluble organic potassium salt; the additive is a mixture including one or more of epoxy resin, phenolic resin, sodium alkyl benzene sulfonate, sodium acrylate, silicone oil, fatty alcohol polyoxyethylene ether sodium sulfate, fatty alcohol polyoxyethylene ether ammonium sulfate, sodium lauryl sulfate and fatty alcohol polyoxyethylene ether; and the capsule shell is made of a colloid shell material. The microcapsule fire-extinguishing agent is safe to use, clean, environmentally-friendly, high in fire-extinguishing efficiency and wide in application range.

The invention relates to a culture device for suspended tissue cells. The device includes a tissue cell culture body. The tissue cell culture body is a porous material. The porous material consists of pore cavities graded according to pore diameters and cavity walls forming the pore cavities in a surrounding manner. The cavity walls forming the upper-grade pore cavities in the surrounding manner are provided with lower-grade pore cavities. The pore cavities in each grade are communicated with each other, and the pore cavities of different grades are communicated with each other. The culture device also includes a cyclone apparatus disposed in the culture device. The culture device is particularly beneficial to free normal growth of suspended cells in a three-dimensional space. A cell over-dense zone or a nutrient enriched zone is not liable to be generated in a cell culturing process, cells are uniformly distributed and normal cell growth is facilitated.

The invention relates to a welding method, a product and an application of a dissimilar metal. The welding method of the dissimilar metal comprises a high-melting-point material to be welded and a low-melting-point material to be welded, the high-melting-point material and the low-melting-point material are mutually overlapped or connected in a sleeving manner to form a welding seam, the welding seam is welded by the aid of electric arc welding, electron beam welding, laser welding or high-frequency welding, the welding temperature is lower than the melting temperature of the high-melting-point material and higher than the melting temperature of the low-melting-point material, the low-melting-point material is melted to serve as a welding material to seal the welding beam and cooled to form a welding channel, and the width L of the welding channel is larger than or equal to 1.5mm. The melted low-melting-point material directly serves as the welding material to seal the welding beam to form the welding channel with a certain width, so that the melted low-melting-point material and the high-melting-point material are mutually permeated in a certain area range to form solid solution, the permeation quantity of high-melting-point metal to low-melting-point metal is controlled, overall strength sufficiently meets use requirements, more importantly, frangibility of the welding channel is reduced, mechanical properties are improved, the requirements for a welding process are low when welding is performed, and the welding method is easier to control.

The present invention is one improved shaving board making process, which, compared with available shaving board making process, has one crushed timber extracting treatment step and a glue applying amount reduced to 6-8 %. During the process, urea-formaldehyde resin adhesive or modified urea-formaldehyde resin adhesive in 6-8 % is applied to result in formaldehyde releasing amount of the shaving board lower than 9 mg / 100 g. The improved shaving board making process can produce shaving board with low production cost, low formaldehyde releasing amount and other advantages.

The invention discloses a multi-wire (solid or flux-cored) bead welding system adopting an inert gas protection or submerged arc method, and a process of the multi-wire bead welding system. The multi-wire bead welding system and the process of the multi-wire bead welding system are used for replacing surfacing with band-electrode to obtainer higher production efficiency. The multi-wire bead welding system comprises a welding gun swing mechanism (11), a multi-wire welding gun (6), a wire-feeding pipe (4) and at least two wire-feeding machines (5). Compared with traditional bead welding, the multi-wire bead welding is higher in deposition rate. Due to the fact that a lap joint area of multi-wire bead welding is soother than that of traditional bead welding, the machining time needed to obtain a smooth surface is largely shortened. A machine head of the multi-wire bead welding system can swing in the welding process, the fusion ratio between bead welding materials and wood is improved while a wider weld joint is obtained, and the unique swing function can guarantee a bead welding layer to be more uniform.

The invention provides a liquid crystal displaying device that comprises a backlight module and a liquid crystal displaying panel that is arranged at one side of the backlight module, wherein the liquid crystal displaying panel comprises a first substrate, a second substrate and a liquid crystal layer that is arranged between the first substrate and the second substrate; the second substrate is arranged opposite to the first substrate; the first substrate and the second substrate commonly form a displaying area and a light shielding area that is arranged around the displaying area; the first substrate in the light shielding area is provided with a first electrode layer; and the second substrate is provided with a first light shielding layer and a second light shielding layer. The invention also discloses a driving method that corresponds to the device.

The invention discloses a porous metal material. The material is a multi-level porous metal material, which is classified according to the pore size of the material, and the number of grading stages is at least two; The elastic modulus of the porous metal material is below 80GPa, and the porosity is not less than 48%. The preparation method is as follows: mixing the raw material powder used to prepare porous metal materials and the pore-forming agent used to prepare the smallest pore cavity to prepare a slurry, uniformly filling the slurry into a polymer material support, forming a green body and drying, The mixed particles are obtained by crushing, and the mixed particles are evenly mixed with the pore-forming agent used to prepare a cavity larger than the smallest cavity to form a dense green body, which is then vacuum sintered, and the conventional follow-up treatment is carried out according to the raw material process. The material has multi-level elastic modulus to meet different use requirements, has good penetration, is especially suitable as a tissue regeneration material, and has a simple and convenient preparation method and is easy to realize.