84results about How to "Won't shrink" patented technology

The invention relates to improved cement-based self-leveling mortar and a preparation method and application thereof. The improved cement-based self-leveling mortar comprises the following components in percentage by weight: 50%-70% of aggregate, 31%-40% of cement, 13%-15% of anhydrite, 5%-15% of ground calcium carbonate, 0.05%-0.3% of water-retaining agent, 0.05%-0.2% of carbonate, 0.4%-0.9% of retarder, 0.3%-0.9% of lignocellulose, 0.2%-0.3% of antifoaming agent, 0.6%-0.9% of water reducer and 1.5%-4.5% of pure acrylic emulsion powder. The invention has the advantages of simple preparation and application methods, good construction peaceability, good waterproofness, greatly reduced microcracks, high mechanical physics property, good self-leveling performance and impact resistance, and excellent flexibility; no cracking and shrinkage occur to constructed ground; and in addition, the invention can effectively solve the problems of complex site operation process, unstable mortar performance, environmental pollution and the like of the existing dual-component cement-based self-leveling mortar, thus the self-leveling mortar is a green building material because no toxic and harmful matter is contained.

The invention discloses a processing method of tea flowers, relating to the technical field of processing. The processing method comprises the following steps: harvesting tea flower buds from the middle ten days of October to the first ten days of December; wiping out receptacles, spreading on a water sieve; freezing the buds in a gauze bag at a temperature of being less than 20 DEG C, freezing for 12-14h; freeze-drying the buds in a vacuum dryer, vacuumizing when the temperature is lower than -20 DEG C, starting an oil heating system when the pressure is vacuumized to -0.1 Mpa, continuously drying for 24-26h by heating until the content of water in the buds is not greater than 4 percent; and baking the buds in a baking machine at a temperature of 90-100 DEG C for 15-20min. According to the processing method, the problem that the quality is not favorably improved because the plumpness is poor, the appearance is unattractive, the color is not fresh and alive, the fragrance is not pure, the color is slightly yellow and not bright, and the like is solved.

The invention discloses a flexible rehabilitation training glove for stroke patients, which comprises a flexible retractable finger traction component and a driving component, and there are five flexible retractable finger traction components arranged in a hand shape. All flexible retractable finger traction components are connected with the driving component, and are stretched under the drive of the driving component; all flexible retractable finger traction components are provided with finger band and/or finger stall. According to the flexible rehabilitation training glove, stroke patients can carry out rehabilitation training for hands, stimulate the reestablishment of neural pathways, prevent the adhesion of soft tissue, prevent muscle atrophy, and avoid the ossification of hand tissue due to calcification, so as to promote the rehabilitation of stroke.

A supporting frame of vitreous body cavity for treating retinopathy is a Rugby football-shaped single-layer netted structure with a front opening (1.0-2.2 mm in diameter) and a rear yellow spot hole (0.5-1.5 mm in diameter). Said netted structure is made of Ni-Ti marmem. Its preparing method is also disclosed.

The invention relates to a dental implant, and aims at providing a stable and lasting dental implant structure. The dental implant structure comprises an implant, a base station and a central bolt; the upper portion of the implant is located in the gingival, the lower portion of the implant is implanted into the alveolar bone, the lower end of the base station is inserted into an installing hole formed in the upper portion of the implant, the base station is provided with a communicated stepped inner hole, the central bolt fixes the base station into the installing hole through the stepped inner hole formed in the base station, and the base station is used for installing a dental crown; the implant comprises an inner sleeve and an outer sleeve which are coaxially arranged; the installing hole is located at the upper end of the inner sleeve, the outer wall of the inner sleeve is provided with an outer thread, the inner wall of the outer sleeve is provided with a matched inner thread, and the inner sleeve is in threaded connection with the outer sleeve; the outer sleeve is made of pure titanium, the outer surface of the outer sleeve is provided with an outer thread, the outer sleeve is subjected to surface treatment to be in anchor combination with the alveolar bone, and the inner sleeve is made of titanium alloy. The dental implant is good in durability and stable and reliable in performance.

The invention relates to a polyacrylonitrile fiber, and concretely relates to a high temperature-resistant flame retardation polyacrylonitrile fiber and a production method thereof. The method concretely comprises the following steps: processing a polyacrylonitrile fiber in a hydrazine solution with the concentration of 7-20wt%, processing the hydrazine processed fiber in an alkaline solution with the concentration of 3-10wt%, washing the alkali processed fiber with water until the fiber is neutral, processing the neutral fiber in an aqueous metal ion salt solution with the concentration of 3-10wt%, oiling the metal salt processed fiber, dehydrating the oiled fiber, and drying the dehydrated fiber to obtain the high temperature-resistant flame retardation polyacrylonitrile fiber. The flame retardation performance LOI of the flame retardation fiber obtained in the invention can reach 40-45, the flame retardation grade is M1, and the amount of smoke generated in the combustion process is very small, the grade of toxic gases is FO, and the smoke amount of the flame retardation fiber in the invention is lower than that of other flame retardation fibers. The flame retardation fiber in the invention has the advantages of high moisture regain rate, high water absorption rate, good dyeability and low shrinkage in boiling water.

The invention provides camellia nitidissima tea and a processing technology thereof and relates to the technical field of tea. The processing technology of camellia nitidissima tea comprises steps as follows: fresh flowers of camellia nitidissima are withered and subjected to microwave fixation under 2,400-2,500 MHz till the water content is 70wt%-75wt%; the flowers are precooled at the temperature of subzero 20 DEG C-subzero 15 DEG C for 3-5 h and dried under the conditions of minus 0.12-minus 0.08 MPa and the temperature of 35-45 DEG C till the water content of the flowers is 11wt%-15wt%; the flowers are dried at 95-105 DEG C for 10-15 min. By means of the processing technology of camellia nitidissima tea, the shape and the color of camellia nitidissima flowers can be kept, and the astringent taste of the camellia nitidissima tea is effectively reduced.

The invention provides a treatment method suitable for carrying and storing plastic-lined steel pipes. Inwards concave pipe caps are inserted at two ends of the plastic-lined steel pipes, the pipe cap is bowl-shaped and comprises an inwards concave bowl body and a thin ring outer edge positioned at the part of a bowl opening, the external surface of the bowl body is approximately in fit with the pipe diameter of the plastic-lined steel pipe, and the thin ring outer edge covers the end face of the plastic-lined steel pipe. The treatment method effectively prevents ports of the plastic-lined steel pipes from being layered, overcomes the potential safety hazard in a process of carrying products and inconvenience in the operation, and improves the quality of the product and work efficiency.

The invention relates to the technical field of lamps, and specifically discloses a wall washing lamp. The lamp comprises a lamp body; the lamp body is a strip-shaped lamp body with the U-shaped ends;light-transmitting glass is arranged at the upper portion of the lamp body; a light source assembly is arranged in the lamp body; the two ends of the lamp body are connected with end covers; the lampbody in the U shape is an integrally formed aluminum profile; the light source assembly in the lamp body is connected with an external junction box through a pin type terminal; a waterproof structureis arranged at the upper portion of the light-transmitting glass; and the end covers at the two ends are of tapping hole-free screw connecting structures. The whole structure is simple and practical,the product production cost is reduced, and the assembly processes can be greatly reduced; and due to the structure, an assembly method is simple, the assembly efficiency is improved, and disassemblyis facilitated.

The invention relates to a preparation method of a cortical hormone preparation, and concretely relates to a preparation method of a betamethasone sodium phosphate freeze-dried powder injection. The method comprises the following steps: dissolving betamethasone sodium phosphate and auxiliary materials in injection, filling the obtained solution, and freeze-drying the filled solution, wherein nitrogen is introduced in the whole sublimation drying stage and desorption drying stage of freeze-drying. The method solves the problem of increase of the content of impurities in the storage process in the prior art, substantially improves the stability of the betamethasone sodium phosphate freeze-dried powder, and also solves the problem of low production efficiency in the prior art.

The invention provides a processing method of dehydrated vegetables, belonging to the technical field of food processing. The processing method is realized by adopting the following technical scheme comprising the following steps: blanching by adopting hot water of 80-100 DEG C for multiple seconds to multiple minutes, immediately cooling after blanching; spin-drying cooled vegetables, rapidly freezing the spin-dried materials at a freezing temperature of below minus 30 DEG C; placing the frozen vegetables in a vacuum container, reducing the pressure to below a three-phase point by means of a vacuum system, and supplying heat to the materials by virtue of a heating system to ensure that water in the materials is evaporated until the materials are dried to a water end point. According to the processing method of the dehydrated vegetables, provided by the invention, the dehydrated vegetables are produced under the conditions of low-temperature freezing and vacuum oxygen deficiency, the inherent shapes of the vegetables can not contract, thermosensitive substances can not be damaged, aromatic substances can not dissipate, readily oxidizable substances can not be oxidized, and thus the shapes, colors, tastes and nutritional ingredients of the dehydrated vegetables are basically consistent with those of fresh vegetables, and the reconstitution properties are specially good.

The invention discloses an expandable fracture packer for preventing midway setting. The expandable fracture packer comprises an upper connector, an upper sealing ring of a slide bushing, a piston, a control dowel, a lower sealing ring of the slide bushing, the slide bushing, an upper sealing ring, a check valve, a valve, a sealing barrel, an inner pipe, a rubber barrel, a lower sealing ring and a lower connector. The slide bushing covers an inner joint through hole in the valve, and a gap between the slide bushing and the valve is sealed by the upper sealing ring of the slide bushing and the lower sealing ring of the slide bushing. The expandable fracture packer has the advantages that water impact pressures generated due to excessively high speeds during descending can be prevented from being transmitted into the rubber barrel, accordingly, the problem of damage to an existing rubber barrel due to midway setting can be solved, and problems at present can be solved; shrinkage of the rubber barrel and releasing of the packer can be prevented when fracture is stopped, repeated shrinkage and expansion of the rubber barrel can be prevented, accordingly, the rubber barrel can be prevented from being damaged, the packer is long in service life, the fracture frequencies can be increased, successful separate-layer fracture can be guaranteed, and economic benefits can be increased.

The invention discloses a filler sheet. The filler sheet comprises a strength support layer and is characterized by further comprising a hydrophilic layer which is compounded on the surface of the strength support layer. The filler sheet has the advantages of high uniform distributivity of liquid on the surface of a filler, larger gas-liquid contact area and improvement on mass transfer efficiency due to the hydrophilic layer on the surface of the filler sheet. The invention also discloses the filler made of the filler sheet.

The invention provides a flexible sound-insulation composite material. The composite material is mainly composed of high-density particles, a viscoelastic thermoplastic material and a flexible framework which is easy to bent and can resist stretching and shearing damages. The composite material prepared by the invention has excellent properties of high strength, high density, fire resistance, no toxin and environment friendliness, corrosion resistance and good sound-insulation effect and can be widely applied to industries including highway traffic, urban rail transit, machinery equipment, house building, ships, home decoration, industrial product packaging and the like. Furthermore, the invention also provides a preparation method of the flexible sound-insulation composite material. A sheet material with low odor, low VOC (Volatile Organic Compound) content, low volatile matter content and good mechanical property indexes of the product is obtained through strictly controlling the extruding temperature and the post-period heating temperature to reduce decomposition and molecular migration of the material, and is an environment-friendly material.

The method performs surface treatment on dead insects resulted from infection of entomopathogenetic nematodes (entomopathogenetic nematodes and insect complexes) through a three-step method. Firstly, anti-dry and antibacterial treatment is performed on the insect complexes infected by the entomopathogenetic nematodes; the insect complexes infected by the entomopathogenetic nematodes are immersed in a mixed solution of kaolin, glycerin soil and water; then further surface treatment is carried out in mixed powder of kaolin starch and vermiculite; and finally, edible pigment is sprayed to make the surface treated dead insects infected by the entomopathogenetic nematodes red color. The surface treated dead insects infected by the entomopathogenetic nematodes can release the entomopathogenetic nematodes normally. Surface treated dead insect agents solve the problems of adhesion and decay during a transport process and guarantees release rate of the entomopathogenetic nematodes. The method is simple and practical, is helpful for large-scale application of the dead insects infected by the entomopathogenetic nematodes.

The invention relates to the technical field of manufacture methods of foaming balls, in particular to a method for manufacturing a foaming ball from acrylic-based resin. The method comprises the following steps of (1) injection moulding, wherein the acrylic-based resin and a foaming additive are added into an injection moulding machine, and are extruded through a screw rod; and then an injection moulded foaming ball intermediate is obtained through the steps of mould clamping, adhesive injecting, pressure maintaining, cooling and mould opening; (2) cooling and foaming, wherein the foaming ball intermediate obtained in the step 1 is taken out of a mould, and is placed in cooling water for cooling and foaming so as to obtain the required foaming ball; the foaming additive is gasified into a low molecule organic matter in a heating condition, and is decomposed to generate a large amount of gas, so that molten solid acrylic-based resin contains a great number of bubbles; the foaming ball is enabled to enter a forming mould for forming, and then is placed in cooling water for cooling; the surface of the foaming ball is sized rapidly in the cooling water; and waste heat exists in the internal part of the foaming ball intermediate, and the acrylic-based resin in the inner part is subjected to cooling shrinkage so as to extrude the bubbles therein, and uniform and beautiful bubbles are generated.