70results about How to "Random cropping" patented technology

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 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.

A process for preparing light-reflecting and luminos function film (or plate) features that the light-reflecting paint prepared from glass microbeads and transparent ink is printed on a base film (orplate) to constitute figure, pattern or marker; or the light-reflecting film and plate with different figures have the patterns and markers printed on them or carved on them.

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 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.

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 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.