40results about How to "Controllable hardness" patented technology

The invention provides a preparation method of an organic silicon nano protective coating of a modulation structure and belongs to the technical field of plasmas. In the method, a reaction chamber isvacuumized, inert gas is led into the reaction chamber to enable a base material to move, preparation of an organic silicon coating and preparation of an organic fluorocarbon coating are alternately conducted, and thus the organic silicon-fluorocarbon multi-layer compact modulation structure is formed. Organic silicon monomer steam comprises the components of at least one type of organic silicon monomers comprising the structures containing double bonds, Si-Cl, Si-O-C, Si-N-Si and Si-O-Si or a ring-shaped structure and at least one type of mixtures of unsaturated hydrocarbon with polyfunctionality and hydrocarbon derivatives. According to the formed organic silicon-fluorocarbon multi-layer compact modulation structure, coating stress can be reduced, and the toughness of the coating is improved; meanwhile a transverse interface exists between organic silicon-fluorocarbon, a corrosion medium runs up against the transverse interface in the coating corrosion process and then corrosion transversely develops, so that longitudinal corrosion penetrating through the coating is not prone to being formed, and the situation that the corrosion medium penetrates through the coating to corrode protected materials and devices is avoided.

The present invention relates to one kind of diamond cone and its making process, and the diamond cone has length/diameter ratio of 2-8, tip curvature radius smaller than 50 nm, and bottom diameter from 100 nm to decades of microns. The making process includes the following steps: coating one protecting layer onto silicon substrate; etching with focused ion beam to form silicon template with conic holes for making the diamond cones; eliminating the protecting layer with etching agent; and growing continuous diamond film in traditional method to obtain the diamond cones. The diamond cone has high wear resistance, high hardness and controllable shape, and is ideal structure for field emitting device, scanning probe system, nanometer impression and miniature tool. Compared with traditional diamond cone making process, the process of the present invention is simple, efficient and suitable for mass production.

The invention relates to a low-density high-bearing sponge. The low-density high-bearing sponge comprises the following materials in parts by weight: 0-50 parts of polyether polyol, 0-50 parts of polymer polyol, 0-15 parts of a flame adhesive, 0-0.5 part of a catalyst, 0-2 parts of silicon oil, 0-10 parts of a foaming gent and 45-56 parts of toluene diisocyanate. The foaming density of the sponge is reduced, while the sponge with the same size is produced, required production materials are greatly reduced, and therefore, production cost is reduced; and the relation between the bearing capacity of the sponge and the density of the sponge is relatively direct, under general conditions, the bearing capacity of the sponge can be reduced along with reduction of the density of the sponge, and once the bearing capacity of the sponge is reduced excessively, the material cannot be used; and by using appropriate polyether, the hardness of the sponge can be controlled, and meanwhile, the shortcomings that the bearing force is difficult to control and the sponge deforms easily due to over-low density are avoided.

The invention discloses injectable chitosan/keratin composite hydrogel capable of promoting myocardium repair and a preparation method of the hydrogel. The hydrogel consists of four solutions, namely chitosan, sodium beta-glycerophosphate, genipin and keratin according to a volume ratio of 10: (1-5): (1-3): (0.1-0.5). The preparation method comprises the following steps: 1) extracting keratin from human fairs by using peracetic acid and Tris alkaline; 2) adjusting the pH value of a water-soluble chitosan solution by using sodium beta-glycerophosphate so as to be close to a microenvironment in a human body; 3) introducing genipin as a crosslinking agent, and controlling the gelling time of a hydrogel solution by changing the use amount of the genipin so as to achieve the purpose that the mixed solution can be rapidly gelled in situ after being injected into an organism. Experiments prove that the composite hydrogel has favorable biocompatibility and has the capability of remarkably promoting the growth of myocardial cells; the hydrogel is wide in sources of materials and low in cost and has a broad application prospect in the field of tissue engineering repair.

The invention discloses a water-coated microcapsule using a water-insoluble polymer as a capsule material, and a preparation method thereof. The water-coated microcapsule is formed through the following steps: wrapping the outer surface of a core material with a mixed organic solution composed of a water-insoluble polymer compound, a water-insoluble polymerization monomer, an initiator and a cross-linking agent, carrying out a polymerization reaction and removing a solvent, wherein the core material is at least one of pure water and an aqueous solution containing a water-soluble substance. Thediameter of the water-coated microcapsule is 1.5-5.0 mm, and the crush strength of the water-coated microcapsule is 1-5 kpa. The method truly realizes the functions of the coating of the pure water and the aqueous solution containing the water-soluble substance, fills the gap in the field, and has the advantages of easily available raw materials, simple preparation process, low energy consumption, no complicated post-treatment process and low preparation cost, and the crush strength of the capsule is adjustable in a range of 1-5 kpa, and can meet the requirements of different application fields.

The invention discloses a production method of a stainless steel band used for an internal round diamond blade. The production method comprises the following steps: rolling a stainless steel cold-rolled intermediate blank with thickness of 0.6-1.2mm at least once by adopting a 12-roller cold rolling mill unit, thus obtaining a rolled semi-finished stainless steel band with thickness of 0.2-0.6mm, and carrying out solution treatment every time after the rolling; then rolling the semi-finished stainless steel band with thickness of 0.2-0.6mm by using the 12-roller cold rolling mill unit to obtain a finished stainless steel band with thickness of 0.1-0.12mm; and finally, cleaning and continuously relieving stress. By using the production method disclosed by the invention, the stainless steel band can be made after steps such as semi-finished product rolling, solution treatment, finished product rolling, cleaning, stretching, bending, straightening treatment and stress relieving treatment. The produced internal round diamond blade utilizing the stainless steel band has the characteristics that the hardness is easier to control, and the hardness scope can be controlled within Vickers hardness HV+/-15. Therefore, in the process of manufacturing the internal round diamond blade, deformation and crack are not easy to occur, the blade service life is long. the blade can be used for about 1500 times, and the production cost is also reduced.

The invention relates to a process for preparing a polyurethane powder adhesive by utilizing a polyurethane prepolymer reversed phase suspension polymerization method. The process comprises the steps that diamine and a compound chain extender are added into an inert oil phase, and a water-in-oil dispersing system is formed under heating and stirring in a water bath; a polyurethane prepolymer and a waterborne polyurethane hardening agent are sequentially and dropwise added for polymerization reaction, and a powdery polyurethane adhesive can be obtained through filtration and drying. The process has the advantages that oil-phase liquid obtained through filtration can be cyclically used and is economic and environmentally friendly, and the preparation time is shortened. The process route is convenient and easy to operate, the polyurethane powder adhesive can meet the requirements of adhesives in multiple fields, and large-scale production is hopeful in the future.

The invention discloses a quantum-dot dispersed resin forming body, a preparation method thereof and a quantum-dot dispersed body, wherein the quantum-dot dispersed resin forming body comprises quantum dots dispersed in a polymeric material; a molecular chain of the polymeric material comprises a hydrophilic resin chain segment, an amphiphilic resin chain segment and a hydrophobic resin chain segment. The quantum-dot dispersed resin forming body, the preparation method thereof and the quantum-dot dispersed body disclosed by the invention have the beneficial effects that by the amphiphilic resin chain segment, the hydrophilic resin chain segment and the hydrophobic resin chain segment are introduced into a same dispersed system, so that when better compatibility of the dispersed system is ensured, the defects generated by single resin matrix is solved.

The present invention relates to a thermoplastic elastomer resin which has good melt viscosity, melt tension, and thermal resistance, wherein it is prepared by introducing a chain extender and a stabilizer for hydrolysis to a thermoplastic elastomer resin produced through melt polymerization in the presence of hydroxy carboxylic acid compound and subjecting the mixture to reactive extrusion to increase the molecular weight and crosslinking degree of the elastomer resin. The thermoplastic elastomer resin according to the present invention has good properties for automobile parts, particularly constant velocity joint boots and bellows.

The invention discloses a bean curd machine which can prevent a mesh screen lifting drive mechanism from polluting made bean curd in processes of separating soybean milk from soybean dregs and squeezing bean curd. The bean curd machine comprises a machine head, a soybean milk barrel and a mesh screen, wherein screw rods are vertically arranged on the outer side surface of the soybean milk barrel,an active magnetic coupling assembly capable of moving along each screw rod up and down is arranged on each screw rod, the lower end of each screw rod is connected with a synchronization wheel arranged on a bean curd machine bottom shell, the synchronization wheel is connected with a drive motor arranged below the soybean milk barrel through a synchronization belt, slave magnetic coupling assemblies are fixedly arranged on the side wall in the mesh screen and are arranged corresponding to the active magnetic coupling assembly. In the whole process of separating the soybean milk from the soybean dregs, lifting the mesh screen and taking bean curd out, parts in a drive mechanism can not be always in contact with bean curd jelly or bean curd in the mesh screen, thus the made bean curd is safe and sanitary and is controllable in softness or harness, ad the bean curd machine has the advantages of time-saving property, convenience for use, low cost, and capability of enabling people to enjoy the interest of making the bean curd per se.

The invention discloses a pole seal material for lithium ion batteries and a preparation method of the pole seal material for the lithium ion batteries. Fluorous rubber serving as a main matrix and auxiliary materials including auxiliary rubber, conductive filler, processing auxiliary agents, a peroxide vulcanizing agent, an auxiliary cross-linking agent and the like are mixed through an open mixing mill or an internal mixing mill to obtain low-compression-set high-conductivity rubber composite material. Under the condition that low resistance and high electrolyte resistance are guaranteed, consumption of the conductive filler is decreased, and the composite material integrates low compression set and high conductivity. The material has excellent conductivity and compressive deformation characteristics, a volume resistance range is 10<2> omega cm-10<4> omega cm, and high-temperature compressive deformation is 30% or below (150 DEG C*70h). In addition, the material is excellent in physical and mechanical property, heat resistance, ageing resistance and electrolyte resistance and is quite suitable for conductive pole sealing of the lithium ion batteries.

The invention provides a brushing electroplating process method, a clad layer and application, and relates to the technical field of brushing electroplating. The brushing electroplating process methodcomprises the steps that after a plated part is ground and polished, electric purifying treatment and activating treatment are carried out; and then after brushing electroplating treatment is carriedout, treatment after plating is carried out. The process is easy to operate, and all the steps of the brushing electroplating process method and the composition and dosage of brushing plating liquidare limited, so that the clad layer brush-plated on the surface of the plated part is controllable in thickness and hardness; and the obtained clad layer is bright, dense and good in adhesive force and comprehensive performance, and therefore the stability of the quality of products of all batches is guaranteed, and the problem that in the prior art, the thickness of a coating is hard to control,and the product batch quality is unstable is relieved. The clad layer is further provided and is manufactured through the brushing electroplating process method, and the clad layer is smooth, bright,dense, good in adhesive force, controllable in thickness and hardness and good in comprehensive quality.

A bed includes components to control pressure of a sleep surface, for example based on sleep position and sleep stages of a user. In some embodiments target pressures for the sleep surface are iteratively adjusted over multiple sleep sessions so to achieve improvements in sleep states and/or sleep quality for the user.

The invention discloses hard alloy. The hard alloy comprises 5-10wt% of cobalt, 0.5-1.5wt% of chromium carbide and the balance tungsten carbide, wherein tungsten carbide comprises non-flaky tungsten carbide grains and flaky crystal tungsten carbide, and flaky crystal tungsten carbide accounts for 18-40wt% of the total mass of the hard alloy. Since the hard alloy contains flaky crystal tungsten carbide in an appropriate quantity, adhesive wear resistance of the alloy can be remarkably improved, and applying the hard alloy to roll collars for stainless steel wire rolling can realize a 30% raiseof stainless steel wire rolling tonnage.

The present invention relates to a method of forming a surface coating by hydrogen treatment of titanium. The method comprises the steps of loading a to-be-processed workpiece A into a rigid mold, designing the size of an inner cavity of the mold to have a certain gap with the workpiece, and filling titanium-containing mixed powder B into the gap between the rigid mold and the workpiece to obtainan assembly C; loading the assembly into a high-temperature furnace, introducing hydrogen, and absorbing hydrogen; and then carrying out vacuum annealing dehydrogenation on the workpiece and the mold,shrinking the size of the workpiece after dehydrogenation, and conveniently taking out the workpiece from the mold. According to the mentod, in order to improve the quality of the coating, high-temperature sintering can be carried out after the dehydrogenation; and the high temperature sintering temperature is greater than the hydrogen absorption temperature and the dehydrogenation temperature. The invention provides the brand-new coating preparation method for the first time, the coating can be added with a plurality of functions and is convenient for large-scale application, meanwhile, thesurface hardness, density, thickness and porosity of the obtained coating are controllable, the uniformity is good, the surface of a complex shape can be treated, and the performance is obviously improved.

The invention discloses a preparation method of chewable tablets containing chitosan oligosaccharide. In terms of the total weight of the chewable tablets containing the chitosan oligosaccharide, the ratio of the chitosan oligosaccharide to collagen to gelatin is (1%-5%):(20%-40%):(60%-80%). The method comprises steps as follows: (1) the chitosan oligosaccharide, the collagen and the gelatin are mixed in solid states; (2) a chitosan oligosaccharide, collagen and gelatin mixture obtained in Step (1) is added to purified water with the weight 20-40 times that of the mixture, and a mixture is stirred at the temperature of 61-85 DEG C for 10-20 min and introduced to a filter net for press filtering treatment twice; (3) chitosan oligosaccharide, collagen and gelatin homogenate obtained in Step (2) is poured into a die, and the thickness of a homogenate layer is controlled to range from 5 mm to 30 mm; (4) the die containing the chitosan oligosaccharide, collagen and gelatin homogenate in Step (3) is placed into a freezing dryer to be prefreezed at the temperature of subzero 40 DEG C for 40-60 min and then subjected to vacuum pumping for freeze-drying until the moisture content of a freeze-dried film is controlled to range from 3wt% to 8wt%; (5) the chewable tablets are prepared from the chitosan oligosaccharide, collagen and gelatin film prepared in Step (4) with a die cutting method.

The invention discloses a method for controllably preparing an MPP trenchless pipe surface coating through diamond powder, and relates to the technical field of pipe surface coating preparation. A silane coupling agent with amino as an end group and micron and nano diamond powder are used for pretreatment, a water-based dispersion is formed in hyperbranched polyester, the water-based dispersion is compounded with water-based polyisocyanate, and then the surface of a MPP trenchless pipe is coated with a compounded material, so that a high-hardness coating is formed on the surface of the MPP trenchless pipe. The MPP trenchless pipe surface coating which is controllably prepared from the diamond powder is successfully obtained through an organic/inorganic composite material forming method. The modified coating with controllable hardness is obtained by regulating and controlling the proportion of different modified powder, then the high-hardness MPP trenchless pipe surface coating is successfully prepared, and the MPP trenchless pipe surface coating has the characteristics of controllable hardness, safe and environment-friendly manufacturing process, simple coating process, uniform shape and the like.