70results about How to "Random cropping" patented technology

The invention provides a nano artificial dura mater with a plurality of functional layers, which comprises a structure with at least two layers; the layer facing the brain is a hydrophobic anti-adhesion electrospun layer; and the layer back to the brain is a hydrophilic nano cytoskeletal layer. The invention also provides a method for preparing the nano artificial dura mater, which comprises the following steps: preparing an electrospun solution of a hydrophobic polymer; preparing an electrospun solution of a hydrophilic polymer; preparing the prepared electrospun solution of the hydrophobic polymer into the hydrophobic anti-adhesion electrospun layer through static spinning; and preparing the hydrophilic nano cytoskeletal layer on the anti-adhesion electrospun layer from the prepared electrospun solution of the hydrophilic polymer through static spinning, receiving a membrane structure, and obtaining the nano artificial dura mater. The mechanical features of the nano artificial dura mater can meet the requirements on tensile strength and flexibility of adaptation diseases; and the nano artificial dura mater can be freely cut as required, and has wide application prospect.

The invention discloses reducing leather and a preparation method thereof. The leather is mainly and three-dimensionally weaved by collagenous fiber obtained by defibrination of leather materials, and the apparent density thereof is 0.35g / cm3-1.4g / cm3. The preparation method of the leather comprises the steps: carrying out defibrination on the leather materials to prepare the collagenous fiber, forming web, carrying out hydroentanglement and wet-hot shrinkage and forming. The leather is reducing leather, the weaving structure, the apparent density, all strength indexes and wear resistance of which are approximate to those of true leather. Compared with the true leather, the reducing leather has the advantages that the leather is large and tidy and can be cut randomly, the weaving apparent density is consistent without location difference; and simultaneously, the raw materials of the reducing leather mainly adopt corner wastes in the leather-working industry. The promotion of the method can enhance the circulation and reutilization of resources in the leather-working industry, and is beneficial to realizing transformation from the traditional leather-working industry to the energy-saving and environment-friendly industry.

The invention provides an electroluminescence fabric which comprises a basic fabric (1), a protective layer lining layer (2) arranged on the surface of the basic fabric, a basic conductive material layer (3) arranged on the surface of the lining layer, a medium material layer (4) arranged on the surface of the conductive material layer, a luminescence layer (5) arranged on the outer surface of themedium layer and a transparent conductive material layer (6) arranged on the outer surface of the luminescence layer. The outer surface of the conductive layer uses a protective layer (7) to seal thelayers. An electroluminescence fabric device is a plane luminescence light source, is soft and folding can be cut, has uniform and silken light luminescence, favorable waterproofness, rich colors, and is applied to various dynamic luminescence clothing and advertisements.

The invention relates to a hybrid fabric grid made from carbon fiber and basalt fiber, belonging to the field of the building material. The hybrid fabric grid is characterized by being made through weaving the carbon fiber and the basalt fiber in a staggered arrangement way, wherein each stand of carbon fiberfiber is divided into two bunches and each stand of basalt fiber is divided into two bunches, and the two bunches of carbon fiberfiber and the two bunches of basalt fiber are intersected and superposed alternatively to form grid nodes. The high-modulus fiber and the low-modulus fiber are woven into the grid according to different characteristics, and then the grid is laid in concrete to form the hybrid fabric grid reinforced concrete material. The hybrid fabric grid is much cheaper thecarbon fiber grid, and the hybrid fabric has definite bearing direction and can obviously improve the tensile strength, the impact resistance and the ductility of the concrete. The hybrid fabric gridhas better crack resistance, bendability, shock resistance, fatigue durability, waterproofness, high temperature resistance, leakage resistance and low cost, is electrically isolating and can be cutrandomly.

The invention provides a method for pipeline non-excavation restoration and reinforcement with light-cured fiber reinforced composite materials. Light-cured fiber reinforced composite sheet materials are pasted to the inner wall of a pipeline to form a sealed inner sleeve after being cured by ultraviolet irradiation. The invention further provides a pipeline to be restored and reinforced by the above method. According to the restored and reinforced pipeline, a high-strength and high-compactness sealed sleeve is rapidly formed on the inner wall of the pipeline, so that an original pipeline can be effectively restored and reinforced. According to the method, the pasting and curing of the composite materials on the pipeline wall are not influenced by the environment, and are convenient and rapid.

The invention discloses a preparation method for an assembled buckle-typed building block combination energy-saving wall plate, which is characterized in that a front panel and a rear panel are respectively inserted into panel assembly troughs which are arranged at two ends of four side plates, thus leading the front panel, the rear panel and the four side plates to be assembled together to form a whole hollow wall plate frame; subsequently, a pasty middle filling layer is injected into the hollow wall plate frame through small holes on the upper side plate by a tunnel high-pressure pouring method; after the pouring operation is completed, the solidification is carried out on a conveyor belt; subsequently, the filling layer is smoothly arranged and cured for a certain time; subsequently, the finished product is gained after the packaging is completed. The preparation method of the invention has the advantages of being directly used as screen walls, light weight, high strength, good heat preservation and sound insulation effects, good surface decoration effect, waterproofing and dust-proofing, beauty, saving decoration procedure, thus quickening the decoration progress and the construction time.

The invention discloses a super flexible nitride-based pyramid structure semiconductor device and a preparation method thereof; the semiconductor device comprises a flexible substrate, a conductive bonding layer, a SiO2 mask layer, a pyramid array and a P-surface transparent electrode arranged in order from bottom to top; an insulation filler is filled between pyramids in the pyramid array; each pyramid in the array comprises a pyramid structure unintentional doping gallium nitride, and a n-type gallium nitride layer, a quantum well layer, a p-type gallium nitride layer and a transparent conductive layer covering the unintentional doping gallium nitride in order; the bottom of the unintentional doping gallium nitride penetrates the SiO2 mask layer and is connected with the conductive bonding layer; the top of the transparent conductive layer is connected with the P-surface transparent electrode; the semiconductor device is not limited in size, high in flexibility, and the preparation method is simple, convenient and easy to realize.

The invention discloses a foam glass insulation and photovoltaic decoration integrated panel and a preparation method thereof. The integrated panel comprises an insulation layer and a photovoltaic decoration layer, the insulation layer is a foam glass insulation board and is wrapped by a waterproof rolling material in a sealing way, and the photovoltaic decoration layer comprises a flexible film battery component, a film layer and a coating layer in sequence from inside to outside. The integrated panel has fire resistance, flame-retardant performance and good durability, thermal insulation and photovoltaic power generation can be realized, and the integrated panel complies with green building concepts such as energy conservation, emission reduction and zero power consumption.

The invention discloses a method for assembling a gold and silver one-dimensional nano-material by adopting an electrostatic spinning technology. The method comprises the following steps: (a) centrifugating and eluting the gold and silver one-dimensional nano-material, and then dispersing the gold and silver one-dimensional nano-material in a solvent to obtain a solution of the gold and silver one-dimensional nano-material at a certain concentration; (b) adding a polymer at a certain concentration into the solution obtained in the step (a), and completely dissolving the polymer by magnetically stirring to obtain a solution as an electro-spinning solution for use; and (c) electro-spinning the electrospinning solution obtained in the step (b) to obtain an assembled gold and silver-polymer self-supported film. Through the adoption of the method, the gold and silver one-dimensional nano-material can be easily assembled on a large scale and a soft self-supported film with good adjustable and controllable optical performance can be obtained; raw materials are easily obtained; and an electro-spun film is soft and self-supported, has very good uniformity, is convenient to carry, adjustable in optical performance, relatively low in technical requirements and feasible in operation and is relatively applicable to industrial production.

The invention discloses a parametric design system and method for tire patterns. The system comprises a pattern groove design module, a pattern groove intersection design module, a decoration design module and an auxiliary modeling module; the pattern groove design module comprises a first layer pattern groove design unit, a second layer pattern groove design unit, a third layer pattern groove design unit, a multi-segment pattern groove design unit and a tire should pattern groove design unit; the pattern groove intersection design module comprises an X type intersection processing unit, a T type intersection processing unit and a V type intersection processing unit; the decoration design module comprises a steel sheet characterization design unit, a groove bottom boss characterization design unit, a groove bottom rib characterization design unit, a new tire identification line characterization design unit, an attrition mark characterization design unit and a steel sheet intersection processing unit; and the auxiliary modeling module comprises an automatic assembly unit. The system disclosed by the invention can regulate the design flows of the tire patterns and improve the tire design efficiency and quality.

The invention relates to a smart damping-varying semi-active vibration absorption rubber mat based on vibration generation, which is formed by bonding a vibration generation layer, a dielectric elastomer layer and a rubber layer. Vibration energy of different magnitudes are converted into different voltage values by the vibration generation layer so as to change damping of the dielectric elastomer layer, so that the object of changing the damping of the rubber mat at right time and proper amount according to different vibration frequencies and amplitudes is achieved. Problems that performance parameters of common damping materials such as rubber, silica gel and asphalt are fixed, and the controllable vibration frequency range is narrow are solved, and requirements for wide frequency range vibration control of a hydraulic system under the high speed and high pressure development trend are met.

The invention relates to a composite type artificial dura mater, comprising two hydrogel layers and a woven layer, wherein the woven layer is arranged between the two hydrogel layers, the woven layer is a degradable polymer material, and cell growth factors are contained in the hydrogel layers. The composite type artificial dura mater disclosed by the invention has the following beneficial effects: (1) the artificial dura mater is made from the degradable polymer material and biological protein which are easily available, and has good biocompatibility; (2) atmospheric pressure plasma jet treatment increases the fiber surface area of the woven layer, decreases a contact angle of a material surface, and improves water transmissibility, degradation speed and cellular affinity; (3) regulation on physical characteristics of the artificial dura mater, such as malleability, toughness, mechanical strength and the like can be realized by regulating a weaving method; and 4) the composite type artificial dura mater is favorable for wound repair, and silver ions enable artificial skin to have good antibacterial performance, so that toxic and side effects on a human body due to the use of a chemical antibacterial medicine are avoided, and storage life of the artificial skin is prolonged.

The invention relates to LED (light-emitting diode) lamps and in particular relates to an LED light source filament. According to a flexible LED light source filament, a P-N junction and sapphire are packaged together to form a single LED wafer; the single LED wafer is fixed on a substrate through a mixture of fluorescent powder and epoxy resin; the design key points are that a fixing hole which can contain the LED wafer and is used for fixing the single LED wafer is formed in the substrate; the fixing hole is a two-section hole with larger top and smaller bottom; the larger hole is a counter bore; the smaller hole is a through hole; the inner diameter of the smaller hole is smaller than the outer diameter of the LED wafer. According to the flexible LED light source filament provided by the invention, the defect that a single face of LED is luminous is overcome, the luminous efficiency is improved, the temperature is reduced, the service life of the LED is prolonged, less heat is generated, the lamp is portable without a radiator, the defect that a lamp is heavy because of the required radiator in a traditional LED terminal lighting product is overcome, the LED light source is soft and can be optionally deformed and cut, and favorable conditions are provided for diversified large-luminous-angle development of terminal light source products.

The invention relates to a low-temperature Lycra free-cut double-sided knitting fabric which is made of blended yarns formed by interweaving low-temperature Lycra yarns and spinning fiber yarns. The fabric is formed by interweaving the blended yarn. The blended yarn is of a rib or double-rib woven structure. The fabric is a double-faced weft-knitting knitted structure, and joints between the blended yarns are mutually soluble bonding points. The low-temperature Lycra free-cut double-sided knitting fabric is advantageous in that the yarn is bonded solidly in a mutually soluble mode, the fabric can be cut freely, edges will not ravel, the manufacturing cost is low, and the overall fabric is flat and beautiful.

The invention belongs to the technical field of biomaterials and particularly relates to refined manufacturing of a photo-control-hybridized cross-linked degradable support and bone tissue engineeringapplication of the photo-control-hybridized cross-linked degradable support. A method for preparing the photo-control-hybridized cross-linked degradable support comprises the steps: 1) preparing modified hydroxyapatite; 2) preparing a bonder GelMA; and 3) blending a blue-light initiator and a thickener to prepare slurry, subjecting double bonds in the GelMA and double bonds of silane-coupler-modified grafted hydroxyapatite to an interaction, i.e., a formula shown in the description in the presence of free radicals through 3D printing technique forming under the condition of illumination of specific wavelength, then, initiating monomer polymerization, and carrying out bonding, thereby forming the solid-phase hybridized degradable support. The invention relates to application of the osteogenesis-remediation-promoting photo-crosslinked composite 3D-printed hybridized degradable support as a drug carrier or / and a bioscaffold material. The support is scientific in design and simple and convenient in operation and can be applied to carrier support materials of bone-defected regenerated remediation or all classes of bioactive substances due to refined controllable processing characteristics and biodegradable characteristics.

The printed facing sheet includes metal sheet and decorating sheet contacting closely on to the metal sheet. The decorating sheet may have various patterns, including patterns of stone, timber, metal, ceramic, animal, plant, etc. The making process and use of the printed facing sheet is also disclosed. The present invention has bright decorating layer, various patterns, simple making process, wide application range, low cost and other features.

The invention relates to the technical field of composite material preparation, and discloses a preparation method of a graphene / flat cocoon toughened carbon fiber composite material, which comprises the following steps: 1) enabling silkworms to spin in a two-dimensional plane to prepare flat cocoons with different areas and thicknesses, the size and the thickness of the flat cocoons being adjusted by changing the number of matured silkworms and the spinning time. According to the preparation method of the graphene / flat cocoon toughened carbon fiber composite material, flat cocoons with a natural cocoon shell structure are prepared by utilizing the spinning instinct of silkworms, the size and the thickness of the flat cocoons can be adjusted by changing the number of matured silkworms and the spinning time, and the flat cocoons are fluffy and soft in structure and can be freely cut; graphene / flat cocoon prepregs and graphene / carbon fiber prepregs are prepared by using a method of doping epoxy resin into graphene nanosheets, are alternately laid in a certain arrangement mode and proportion, and are hot-pressed and cured to obtain the carbon fiber composite material with an excellent toughening effect.

The invention discloses a manufacturing method of a paper honeycomb core natural stone composite board which is a natural stone composite board of layered structure. The ultra-thin natural stone board layer with the thickness of only 1-5mm completely maintains the texture of the original natural stone, and is stacked and compounded layer by layer with a paper honeycomb core layer is subjected to intensity increasing processing and moistureproof processing and a fiber glass resin layer, thus being a novel composite board which has high intensity, light weight and low cost. The composite board is especially applicable to decoration occasions needing precious stone texture patterns, texture and light weight, such as: furniture, cabinets, elevators and other products as well as store decoration arks, ceiling and wall plates for building decoration, and the like.

The invention discloses a flexible transparent high-barrier packaging membrane, which includes barrier membranes, an adhesive layer and an anti-ultraviolet layer, wherein the barrier membranes include a barrier membrane I and a barrier membrane II; a nano-material with water absorption and oxygen absorption performances is added into the adhesive layer; the barrier membrane I and the barrier membrane II are compounded through the adhesive layer to prepare a composite membrane; the anti-ultraviolet layer can be directly coated or sputtered on the composite membrane. The packaging membrane has high barrier performance, and also has a simple entire production process, high production line speed, a mature raw material production technology and low cost; and thus, the scale-up production is high, and the product cost is far away lower than that of the similar products on the current market. Most importantly, the product can make up for the critical defect of sharply declined barrier performance caused by cracks produced in production and application of the similar product barrier layers.

A luminous communication indication connecting line comprises a communication transmission line provided with an electrogenerated luminous line, and two end attachment plugs, and is characterized in that the communication transmission line is a communication wire or an optical fiber, and the communication transmission line accompanies with the electrogenerated luminous line in a parallel mode and is sealed through transparent plastics to form the transmission line provided with the electrogenerated luminous line; two ends of the communication transmission line are respectively matched with a communication attachment plug, and electrodes of the electrogenerated luminous line are exposed outside the communication attachment plugs; and a hand-held mobile actuator is connected with the electrodes of the electrogenerated luminous line to give out light, the position and the direction of the communication transmission line are determined, maintenance detection staff can determine a faulty line in a few seconds, and working efficiency is improved.

The invention discloses a vacuum insulation, heat preservation and photovoltaic decoration integrated plate. The vacuum insulation, heat preservation and photovoltaic decoration integrated plate is of a layered structure and comprises a heat preservation layer, a reinforcing layer and a photovoltaic decoration layer from inside to outside, wherein the heat preservation layer is made of STP (super thin panel) vacuum insulation heat preservation boards which are packaged by waterproof coils in a vacuum seal mode; the waterproof coils are polymer cement mortar composite waterproof coils; the reinforcing layer are made of cement pressure boards or calcium silicate boards, and the elasticity modulus of the reinforcing layer is the same with that of the heat preservation boards; the photovoltaic decoration layer comprises soft film battery assemblies, a film layer and a coating layer from inside to outside. The vacuum insulation, heat preservation and photovoltaic decoration integrated plate has the advantages of non-ignitability, waterproofness, component standardization, assembly construction and photovoltaic heat preservation and decoration integration.

The invention belongs to the field of heating materials and in particular relates to a graphene heating film. The graphene heating film comprises a film-forming component and a curing agent, and the usage amount of the curing agent can ensure that the film-forming component is cross-linked and cured into a film. The film-forming component comprises the following substances in percentage by mass: 1-5% of a dispersing agent, 3-8% of a catalyst, 33-61% of a conductive filler and 37-58% of a film-forming resin, wherein the dispersing agent comprises a substance having the following molecular structure, wherein the structural formula is as shown in the description. In the formula, n is an integer of 5-20; R1 is alkyl having 5-18 carbon atoms; and R2 is alkyl having 5-18 carbon atoms. The heating film is capable of uniformly heating, and the application safety performance is improved.

The invention relates to a preparation method of a PPy-SWCNTs nano composite thermoelectric film and the nano composite thermoelectric film. The method comprises steps of 1) dissolving a proper amountof oxidizing agent and doping agent p-toluenesulfonic acid in the water to obtain solution A, and pre-cooling the solution A at 6-10 DEG C for 1-2 hours; 2) ultrasonically dispersing pyrrole monomersand SWCNTs powder into cyclohexane solution to obtain solution B; 3) dropwise adding the solution B into the solution A to form a clear interface; and 4) fully reacting at the temperature of 6-10 DEGC, cleaning and drying to obtain the PPy-SWCNTs nano composite thermoelectric film. Compared with the prior art, high conductivity of a PPy nano film obtained through low-temperature interfacial polymerization and the high Seebeck coefficient of the SWCNTs are effectively combined, a power factor at the room temperature reaches 37.6 mu V / mK<2>, and in addition, the preparation method is simple, high in repeatability and the like.

The invention provides a flame-retardant single-component moisture-curable silicone rubber and a preparation method and application thereof and belongs to the field of organic silicon rubber materials. The preparation method of the flame-retardant single-component moisture-curable silicone rubber is characterized in that alpha,omega-hydroxyl-terminated polydimethylsiloxane serves as a basic resin, alkoxy silane serves as a cross-linking agent, organic tin serves as a catalyst, meanwhile reinforcing filler, increment filler, a fire retardant, hydroxyl scavenging agent and other components are adopted for matching, and the silicone rubber is obtained through vacuum kneading and mixing, extrusion and lamination and vacuum package. The silicone rubber is a single-component band-shaped or flaky material, is stable in appearance, has a certain initial strength and flexibility, and has good insulativity, weather resistance, heat resistance, acid-base resistance and flame retardant properties after moisture curing. The silicone rubber has good appearance and plasticity, can be attached in a planar mode, wound and bound, or be plugged, blocked and filled in joints and has the wide application prospect in the fields of cable damage repairing, insulated protection of exposed electrical connecting points and the like. The flame-retardant single-component moisture-curable silicone rubber is simple in preparation process and is especially suitable for industrial production, and the raw materials are wide in source.

The invention discloses an electric heating fabric. The fabric comprises a substrate layer, a conductive layer, a heating layer and an insulating layer. The conductive layer is formed by coating a mixture of a conductive material and an adhesive on the substrate layer. The heating layer is formed by weaving heating yarns and covers the conductive layer. The insulating layer covers the heating layer. The electric heating fabric provided by the invention is safe and reliable, thin and comfortable, and capable of being washed with water and being tailored randomly. The fabric can be manufactured into various garments.

The invention relates to a composite type artificial dura mater, comprising two hydrogel layers and a woven layer, wherein the woven layer is arranged between the two hydrogel layers, the woven layer is a degradable polymer material, and cell growth factors are contained in the hydrogel layers. The composite type artificial dura mater disclosed by the invention has the following beneficial effects: (1) the artificial dura mater is made from the degradable polymer material and biological protein which are easily available, and has good biocompatibility; (2) atmospheric pressure plasma jet treatment increases the fiber surface area of the woven layer, decreases a contact angle of a material surface, and improves water transmissibility, degradation speed and cellular affinity; (3) regulation on physical characteristics of the artificial dura mater, such as malleability, toughness, mechanical strength and the like can be realized by regulating a weaving method; and 4) the composite type artificial dura mater is favorable for wound repair, and silver ions enable artificial skin to have good antibacterial performance, so that toxic and side effects on a human body due to the use of a chemical antibacterial medicine are avoided, and storage life of the artificial skin is prolonged.

The invention brings forward a crosslinked polyethylene composition and application thereof. A formula for the composition comprises the following components expressed in weight parts: 40 to 50 of polyethylene PE, 0.1 to 2 of an anti-oxidant, 1.5 to 3 of a cross-linking agent, 25 to 40 of a foaming agent and 5 to 15 of a fire retardant. The formula may further comprise a nanometer infrared reflecting substance, polyester, polyamide, polypropylene, acrylic acid, aromatic polyamide, polybenzimidazole, silicone, etc. The crosslinked polyethylene composition provided by the invention is nontoxic and odorless, is easy to process, can be cut at will, bonds with a plurality of materials and is a high efficiency, energy saving and environment friendly material; since foaming direction of the crosslinked polyethylene composition is almost consistent, the interior of a foamed substance regularly arrayed, so slits become narrower, and heat hardly loses; since the nanometer infrared reflecting substance is added, when heat of a human body diffuses outwardly in the form of infrared rays and contacts the crosslinked polyethylene composition, the heat of the human body is rebounded by the infrared reflecting substance in the crosslinked polyethylene composition and acts on the human body again, which enables people to substantially feel warm.

The invention discloses a two-line parallel type electronic water gauge circuit. The circuit is composed of multiple stages of water level detection sub-circuits which are arranged in parallel at equal intervals, a voltage division circuit, a microprocessor and the like. The water level detection sub-circuit is composed of an NMOS tube, a resistor, a detection electrode and a common electrode. Whether a water body makes contact with a detection electrode or not is used for deciding connection and disconnection of an NMOS tube, then whether a low-impedance path is provided for detection signaltransmission or not is determined, multi-stage parallel convergence transmission is conducted, finally, a microprocessor MCU conducts analog-digital conversion through AD to obtain a voltage value, the voltage value is compared with reference voltage, and water level information is obtained. A two-wire system replaces a previous four-wire system, analog signals replace digital signals, the flexible electronic water gauge has the advantages of being large in measuring range, capable of being cut at will, ultralow in power consumption, wide in working voltage and temperature range, light in weight, small in size, high in response speed, high in interference resistance, high in corrosion resistance and the like, the waterproof level can reach IP68, and the flexible electronic water gauge is further machined.

The invention discloses a preparation method of a high-performance flat cocoon composite material. The preparation method comprises the following steps: 1, enabling silkworms to spin in a two-dimensional plane by adjusting a silkworm cocooning environment; 2, preparing flat cocoons with different areas and different thicknesses by changing the number of matured silkworms and spinning time; 3, optimizing a cocoon shell structure through a hot pressing method; and 4, alternately laying a hot-pressed flat cocoon layer and a resin film, and preparing the high-performance flat cocoon composite material through a hot-pressing process. The flat cocoon layer is prepared by using the spinning instinct of the silkworms, and the flat cocoon layer with a natural cocoon layer structure is used as a reinforcement of the composite material, so the composite material with excellent mechanical properties can be obtained. The size and the thickness of the flat cocoon can be adjusted by changing the number of the matured silkworms and the spinning time, and the flat cocoon is compact in structure, can be freely cut and is convenient to manufacture after being hot-pressed, and the defects of small size, irregular shape and the like of a common cocoon are fully overcome.