84 results about "Post curing" patented technology

The invention discloses a GIL / GIS epoxy insulator residual stress suppression method and device based on sound field assisted post-curing, and the main steps are as follows: after the epoxy insulator is cured at a first stage, the curing degree is gt; and the temperature of the liquid medium in the container filled with the liquid medium and the ultrasonic vibration auxiliary curing time are regulated and controlled, and the post-curing process of the GIL / GIS epoxy insulating part is completed, so that the residual stress at the bonding position of the insulator epoxy and the metal is effectively inhibited, and the mechanical property of the epoxy resin insulator is remarkably improved. The mechanical performance of the epoxy insulating part in the gas insulated switchgear under the complex operation condition is improved.

The invention relates to the field of cables, in particular to a post-curing cable and an installation method thereof.The post-curing cable comprises a cable core body, an inner insulating layer, an outer insulating layer and a spiral strip, and a spiral containing groove used for pouring curable epoxy resin is formed in the post-curing cable. The mounting method of the post-cured cable comprises the step of filling the spiral containing groove of the laid post-cured cable with the epoxy resin mixed liquid capable of being cured. The post-curing agent not only can be beneficial to keeping high insulation and use performance of the cable for a long time, but also can be beneficial to greatly prolonging the service life of the cable, and can be beneficial to greatly improving the use safety of the cable, thereby being beneficial to greatly reducing the potential safety hazard of use; according to the installation method, the hard insulation wrapping layer can be manufactured very conveniently and rapidly, so that an excellent hard insulation wrapping layer can be obtained, the cable can have very strong large pressure resistance and large impact resistance through installation, and potential safety hazards in use can be greatly reduced.

This invention belongs to the field of ceramic composite material manufacturing technology, specifically relating to a method for preparing SiC composite materials based on cold spraying and silicon infiltration. SiC powder is prepared into a suspension, which is then deposited onto a substrate using a cold gas-powered spraying system to form a porous SiC preform coating. The preform coating undergoes post-curing to enhance its cohesive strength. Finally, melt silicon infiltration is performed, causing silicon to react with carbon in the preform to generate a new SiC phase that fills the pores, resulting in a high-density, high-performance SiC composite component. This method combines the advantages of low-temperature forming in cold spraying with silicon infiltration technology. The relatively low substrate temperature during cold spraying effectively avoids the adverse effects of high temperatures on the material structure, maintaining the stability of the original SiC phase. By adjusting the spraying parameters and matching the silicon infiltration process, the free silicon content and the distribution of the newly generated SiC phase in the composite material can be precisely controlled, further improving the material's density and mechanical properties.

Proposed is a lacquer for treating a 3D printing-created printed matter that is configured to contain a perfluorinated acrylic resin having a relatively high surface hardness and excellent water resistance and contamination resistance, as well as an excellent force of adhesion to a printing resin making up a 3D printed matter. While the 3D printed matter that is printed through a photocuring-type 3D printer is cleaned and rinsed, an uncured resin remaining on the 3D printed matter is removed, and at the same time, a protective film layer is formed on a surface of the 3D printed matter by being coated thereon. As a result, the surface of the 3D printed matter is protected from damage during a post curing process. Furthermore, the 3D printed matter, which is to be manufactured, is also effectively safeguarded against quality degradation that is caused by contamination through the surface thereof and subsequent discoloration.

The invention relates to the technical field of composite material continuous forming, in particular to a continuous forming method suitable for a prepreg composite material structural member, and the method comprises the following steps: according to the layering design requirement, a prepreg coiled material is unfolded and layered; heating and mould pressing are carried out on the laid prepreg, so that the prepreg is preformed; the pre-formed prepreg sequentially passes through at least two heating and pressurizing areas with the temperature and the pressure capable of being independently regulated and controlled to be cured; the cured prepreg is subjected to post-curing in a mold at the temperature of 150 DEG C to 170 DEG C and the pressure of 0 MPa to 3 MPa; and pulling the post-cured product to move forwards in a stepping motion mode to obtain the prepreg composite material structural member. The continuous production of the prepreg from laying, preforming and curing to finished products is realized, the size limitation of the traditional autoclave is broken through, and the integrated forming of the super-long structural member becomes possible.

The present invention relates to a laminate for post-curing thermoforming, in which a substrate layer, an uncured hard coat layer, and a protective film are laminated in this order, and after the protective film is removed and the hard coat layer is cured, the laminate for post-curing thermoforming is obtained. The nanoindentation hardness (Hi) of the hard coating layer before the weather resistance test and the nanoindentation hardness (Hf) after the weather resistance test satisfy the following relationship. 0.9 Hi < Hf < 1.4 Hi

The invention discloses a high-temperature-resistant thermal control film and a preparation method thereof, relates to the technical field of thermal control materials, and aims to solve the problems that the high temperature resistance, the mechanical strength and the component compatibility of a traditional thermal control film are difficult to consider at the same time, and the aging resistance and the environmental corrosion resistance are poor. The preparation method comprises the following steps: by taking polytetrafluoroethylene and fluorinated ethylene propylene as matrixes, firstly preparing silicon-fluorine modified graphene and a modified cross-linking agent, and then preparing a product through the steps of preparation of fluoroalkene grafted graphene composite powder, preparation of pre-crosslinking type mixed slurry, film casting and stepped drying, cross-linking curing, segmented post-curing and the like. Through synergistic modification, a compact three-dimensional cross-linked network is constructed, and process optimization is matched, so that the prepared film has excellent high-temperature-resistant stability, mechanical strength, heat insulation and temperature control effects and flame retardance, and can be widely applied to the fields with strict requirements on thermal control materials, such as aerospace, electronic and electrical engineering and the like.

The present invention relates to a method of producing a coated molded fiber-based product comprising filling at least one recess of a molded fiber-based product with a liquid water-based coating composition and removing excess coating composition to obtain a wet coating film, followed by curing the wet coating film. The invention also relates to a coated molded fiber-based product produced by said method and to the use thereof as a food container.

A method for preparing a complex-shaped flame-retardant material based on sequential curing belongs to the technical field of flame-retardant material preparation. The method is: vinyl phosphoric acid and imidazole compounds are mixed in a solvent at a molar ratio of 1:2, stirred at 25-50°C for 2-8h, and the solvent is removed to obtain an oily product; epoxy resin, acrylate resin, acrylate resin curing agent and the oily product of step one are mixed, vacuumed, bubbles are removed, poured into a mold, and a first-stage flexible material is prepared by ultraviolet irradiation or heating, and the flexible material is shaped, pre-cured at 70-120°C for 1-3h, and post-cured at 130-180°C for 2-5h to obtain a final complex-shaped flame-retardant material. The present invention is based on sequential curing technology, is not limited by traditional molds, can prepare complex-shaped flame-retardant materials, provides a way of thinking for preparing complex-shaped flame-retardant materials, and broadens the application field of flame-retardant materials.

A method for preparing a variable stiffness flexible composite material tube and its application belong to the field of engineering composite material preparation. The method involves mixing a UV curing agent, an imidazole derivative curing agent, acrylate resin, and epoxy resin, followed by vacuuming to remove air bubbles, then compounding with carbon fiber cloth. Using a polytetrafluoroethylene rod mold, the mixture is irradiated with ultraviolet light for 8-12 minutes, followed by pre-curing at 110-130℃ for 2.5-3.5 hours, and then curing at 140-160℃ for 2.5-3.5 hours to obtain a rigid material. This invention, through molecular synthesis design, prepares imidazole derivatives with higher molecular weights, improving the shelf life of the flexible material and thus significantly increasing the workability. The prepared imidazole derivatives are in a liquid state, greatly improving compatibility with the resin system. Through molecular synthesis design, the prepared imidazole derivatives can undergo a Michael reverse reaction at 120℃, releasing 2-ethyl-4-methylimidazolium, thereby achieving reaction polymerization at a lower temperature and improving application efficiency.

The present application relates to the technical field of wind power blade, and more particularly to a modular wind power blade post-curing tool, comprising a traction flatcar, a deformation prevention support and a plurality of profiled supports; the traction flatcar is arranged on the ground along the length direction of the wind power blade; the deformation prevention support is installed on the root end surface; the plurality of profiled supports are arranged in intervals along the length direction of the traction flatcar, and the parting line of the wind power blade is perpendicular to the ground and then is arranged to rotate counterclockwise by one hole position angle; each profiled support is provided with a profiled plate, the two ends of the profiled plate are respectively bent towards the windward surface and the leeward surface of the wind power blade, the middle part of the profiled plate is in contact with and is limited by the bottom of the wind power blade; the wind power blade can smoothly enter and exit the post-curing furnace, and the occupied area is also reduced; the deformation prevention support forms a five-point support action on the cross-sectional shape of the root section, and the plurality of profiled supports form segmented support actions on the wind power blade, effectively avoiding the deformation of the root section circle and the blade profile of the modular wind power blade.

The invention belongs to the technical field of railway vehicle interior parts, and particularly relates to a manufacturing method of a middle roof plate, which comprises the following steps of: S1, prefabricating a functional module, and temporarily fixing a functional core material and a reinforcing structural member into a standardized module by adopting low-temperature hot melting sewing or a water-soluble binder; s2, substrate thermal forming and synchronous compounding are conducted, specifically, the macromolecule substrate is heated, softened and formed, and the prefabricated module is synchronously combined with a base body in the plastic state of the macromolecule substrate in a melting bonding mode or a reaction bonding mode or other modes; s3, in-situ integration of edge connecting pieces, wherein the connecting pieces are integrated to the edge of the base body through in-mold injection molding coating; and S4, post-curing and finishing. According to the method, traditional discrete and serial procedures are highly integrated through process reconstruction of prefabrication, synchronous compounding and in-situ integration, the problems that in the prior art, the production period is long, and the quality consistency is poor are solved, and efficient, high-precision and high-reliability manufacturing of the middle roof plate is achieved.

The invention discloses a preparation device and method of a heterogeneous micro-costal membrane. The device is sequentially provided with an unwinding module, a coating module, an imprint curing module, a winding module and a central controller in the advancing direction of a base film, wherein the imprint curing module comprises a first silica gel compression roller, a second silica gel compression roller, a tunable microstructure plate roller, a pre-curing area, a main curing area, a post curing area and a real-time detection feedback system. The tunable microstructure plate roller is composed of a female template roller and a flexible intelligent liner, an array type shape memory alloy driving unit is embedded in the liner, and the geometrical parameters of the millimeter-level micro vortex generator can be adjusted; each curing area is provided with an independent UV light source, and a gradient curing process is adopted. The method comprises the continuous steps of unwinding, corona treatment, precise coating, imprinting gradient curing and winding. The full-process automatic continuous production is realized, the curing internal stress is reduced, the microstructure forming precision, the adhesive strength and the mechanical property of the film are improved, and an efficient preparation scheme is provided for engineering application of the multi-scale heterogeneous micro-costal film.

To provide systems and methods for determining and correcting a tooling deviation by performing three-dimensional surface scans on a composite panel.SOLUTION: A system and a method allow for less accurate post-cure fixturing (e.g., holding a panel in a less constrained state, as compared to prior art techniques), while still maintaining a sufficient amount of precision for predictive shimming and shimless techniques. The method includes: performing a first three-dimensional surface scan; performing a second three-dimensional surface scan; and comparing the two three dimensional scans to determine a deformation function corresponding to a tooling deviation. In some of the systems, a header structure is used to hold the composite panel in a nominal configuration for the second three-dimensional surface scan. In some of the systems, a scanning device performs mirrored scanning on either of both sides of the composite panel, using a common reference frame.SELECTED DRAWING: Figure 13

The application discloses a preparation process and equipment of an epoxy glass fiber plate with high transparency, and relates to the technical field of plate preparation; and specifically comprises the following steps: glue solution preparation, preheating of an epoxy resin, and adding a curing agent and an accelerator into the preheated epoxy resin to be stirred in a vacuum stirrer to form transparent epoxy glue solution; glue dipping and pre-curing; laminating and hot-pressing curing, multi-layer stacking of the glass fiber cloth after pre-curing, and then hot-pressing curing in a hot-pressing equipment under a temperature rising, pressure applying and negative pressure environment; post-treatment, post-curing of the product in an oven after the hot-pressing curing.

The present application relates to the technical field of composite material forming, and particularly relates to a protection treatment method before filling of a core mold of a metal framework with a complex structure. The treatment method comprises the following steps: S100, preparation; S200, preparation of silicone rubber; S300, coating of the filling silicone rubber; S400, filling of the core mold, machining and composite material forming; and S500, completion of product preparation, removal of the core mold and finished product silicone rubber. The treatment method has the advantages of simplifying the operation process, reducing the operation difficulty, improving the labor efficiency, shortening the curing time, making the coating uniform and complete, shortening the protection time of the whole framework, being suitable for the wide temperature range post-curing process requirement, effectively buffering and eliminating the damage of the removal tool to the metal framework, avoiding the resin from entering the hollow hole and the part with a rib plate included angle during the resin pouring process, reducing the difficulty of the core mold removal and the framework cleaning in the later period, and being easier to clean and remove without residue.

The present disclosure relates to a friction material composition comprising reactive poly aryl ether ketone (R-PAEK) as a binder. The present disclosure further relates to a process for the preparation of a friction material composition. Furthermore, the present disclosure relates to a process for the fabrication of an article by using the friction material composition. The friction material composition of the present disclosure does not require post curing while manufacturing brake pads. Further, the article fabricated by using the friction material composition of the present disclosure has longer shelf life and do not evolve noxious by-products and possesses superior physical and tribological properties.

The invention provides a high-modulus low-thermal-expansion PAI composite material and a hot press molding process thereof. The composite material is formed by compounding polyamide-imide powder, ultra-short carbon fibers, graphite, polytetrafluoroethylene, a plurality of interface additives, a stabilizer and the like, the length of the carbon fibers does not exceed 1 mm, the particle size of the graphite is controlled to be 5-20 microns, the proportion of key filler is precisely designed, and a high-rigidity, low-expansion and low-friction composite structure framework is cooperatively constructed. And a hot pressing path combining layered filling, staged exhausting, heating and pressurizing and post-curing treatment is adopted in a matched mode, high-density forming of the composite structure can be achieved, the size control precision is effectively improved, and the service life is effectively prolonged.

The invention belongs to the technical field of electric blade molds, and discloses a heating device and method for a post-curing inner cavity of a wind power blade. The heating assembly is connected with a heat exchange coil in the hot air conveying assembly through an inlet and outlet pipeline in a rapid and detachable mode to form a closed circulation path. After the heating assembly is started, the heating fluid in the heating assembly is heated to the set temperature and circularly conveyed into the heat exchange coil pipe, and efficient transfer and stable maintenance of heat energy are achieved. And after the heating fluid reaches the preset temperature, the centrifugal wind wheel is started, air heated by the heat exchange coil pipe forms hot air flow, the hot air flow is guided by the drainage plate to enter the inner cavity of the blade, and post-curing treatment is carried out. A temperature measuring probe is arranged in the inner cavity of the blade, so that the temperature in the cavity can be monitored in real time; through real-time temperature feedback linkage control of the intelligent temperature control part, the hot air conveying assembly, the heating assembly and the temperature measuring probe, precise heating and efficient energy consumption management in the post-curing process of the inner cavity of the blade can be achieved, and good operability and practical value are achieved.

1. The name of this design product: Curing Box (ShapeCure D Plus). 2. Purpose of this design product: This design product is used for post-curing processing of 3D printed products. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention discloses a non-metallic material gluing and curing method and system based on frequency conversion microwaves. The method comprises the steps that non-metallic materials to be glued and an adhesive are obtained; the non-metallic materials are subjected to microwave-assisted coating through the adhesive, so that the non-metallic materials are glued; and the glued non-metallic material is subjected to staged curing through frequency conversion microwaves, environment and atmosphere regulation and control are carried out in the curing process, and after curing is completed, post-curing cooling and strengthening treatment are carried out. By utilizing the embodiment of the invention, the efficient and uniform curing effect can be realized by optimizing the selection of the adhesive and microwave heating control.

The invention discloses a preparation method of an intelligent liquid two-way transportation surface based on cooperation of an Aucaria cunninghamii structure and pH response. The method comprises the following steps: step 1, designing, optimizing and semi-curing printing of an Aucaria cunninghamii structure imitating model; step 2, preparing a pH response particle modification solution; step 3, swelling modification and post-curing of the semi-cured model; and step 4, drying and post-processing. According to the method, pH response particles are introduced into an Aucaria cunnata bionic structure, the surface can intelligently switch the transportation direction of high-surface tension liquid according to the pH value of the liquid, reversible switching of the transportation direction is achieved, and the limitation of unidirectional and irreversible transportation of a traditional surface is broken through; the pH response particles are firmly anchored on the surfaces of the three-dimensional double-curvature ratchets through a semi-curing-swelling-post-curing process, and the dynamic response capability to the chemical environment is given to the three-dimensional double-curvature ratchets while the inherent capillary driving characteristic of the structure is reserved.

The method involves supplying a profile which is wound round a winding structure with stresses being present in the profile due to the winding. The profile comprises several fibers extending along one another, which are embedded in a partially cured thermosetting matrix material. A heat treatment is carried out on the profile with a heat treatment device while the profile is wound. The matrix material is post-cured, during heat treatment. The glass-transition temperature of the matrix material is increased by the heat treatment, and the temperature to which the profile is exposed during the heat treatment remains below the glass-transition temperature. The stresses remain constant and the shape is retained both in cross-section as well as radius of curvature of the profile in the stress-free state, despite the heat treatment and despite the winding of the profile prior to the heat treatment.

The invention discloses a forming method of a low-cost S-shaped composite material pipeline, which comprises the following steps of: firstly, manufacturing a thermoplastic core mold, paving prepreg by using the thermoplastic core mold as a composite material pipeline paving mold, packaging by using a vacuum bag after paving, and curing at low temperature by using a drying oven; in order to ensure that the composite material pipeline meets various use working condition requirements in a high-temperature environment, high-temperature post-curing treatment needs to be carried out after low-temperature curing is completed, softening of the thermoplastic core mold can be achieved in the high-temperature post-curing process, and demolding of the thermoplastic core mold can also be achieved while the high-temperature post-curing treatment is completed. According to the method, the problems that a core mold of a large-curvature composite material pipeline product cannot be demolded and the core mold is left can be solved, and smooth development of the composite material pipeline with the curvature is achieved; and meanwhile, the thermoplastic core mold can be repeatedly subjected to injection molding and can be repeatedly used, so that the manufacturing cost of using an inflatable air bag and a combined metal core mold is greatly reduced.

The method of manufacturing a transparent whitening tray according to the present invention includes 3D printing of the whitening tray using the composition for forming a transparent whitening tray as a raw material (S10), removing uncured resin and liquid from the whitening tray obtained in the above step (S20), post-curing the whitening tray obtained in the above step (S30), post-heat treating the whitening tray obtained in the above step (S40), and washing the whitening tray obtained in the above step (S40).

The present invention relates to a method of producing a coated, molded fiber-based product which involves filling of at least one depression of the molded fiber-based product with a liquid water-based coating composition and removing excess coating composition to obtain a wet coating film, followed by curing the wet coating film. The present invention further relates to a coated, molded fiber-based product prepared by said method and its use as a foodstuff container.

The invention provides post-curing equipment for silicon controlled rectifiers, the post-curing equipment comprises a curing oven, a curing mechanism and a vibration mechanism are arranged in the curing oven, and the post-curing equipment relates to the technical field of the silicon controlled rectifiers. Therefore, the ultraviolet rays can irradiate each surface of the silicon controlled rectifier more uniformly and comprehensively, and the problem of non-uniform curing caused by traditional fixed irradiation is effectively solved. Meanwhile, the vibration mechanism used in cooperation can enable the supporting box containing the silicon controlled rectifiers to vibrate, the silicon controlled rectifiers in the box are promoted to turn over and slightly move in position, and it is ensured that all the silicon controlled rectifiers can receive sufficient ultraviolet irradiation from different angles. Through the synergistic effect of the two aspects, the uniformity and consistency of the curing effect are remarkably improved, and the problem that the overall curing time needs to be prolonged due to uneven curing is solved, so that the overall curing efficiency is effectively improved.

The invention relates to the technical field of insulating composite materials, in particular to an electric corrosion resistant hydrophobic insulating composite material for a hot-line work soft sling and a preparation method and application of the electric corrosion resistant hydrophobic insulating composite material. The first purpose of the invention is to provide a preparation method of an anti-electric-corrosion hydrophobic insulating composite material for a hot-line work soft sling, and the preparation method comprises the following steps: dipping an insulating base material in a composite anti-electric-corrosion coating, carrying out vacuum drying for 12-24 hours, and carrying out hot-pressing curing; and after cooling, spraying fluorinated liquid on the surface, and curing to obtain the electric corrosion resistant hydrophobic insulating composite material. According to the electric-corrosion-resistant hydrophobic insulating composite material provided by the invention, through the electric field response characteristic of the modified ZIF-8 nanoparticles, the micro-nano coarse structure of hydrophobic SiO2 and the self-repairing function of the double-effect microcapsules (fluorine-containing silicone oil / epoxy resin core material), the insulation and pressure resistance, hydrophobic durability and electric corrosion damage self-repairing capability of the insulating material are synergistically improved.

The utility model relates to the technical field of pultrusion processes, in particular to a multi-cavity pultrusion die, which comprises a pre-forming section, a pre-forming section, a pre-forming section, a pre-forming section, a pre-forming section, a pre-forming section, a pre-forming section and a pre-forming section, which are arranged along the pultrusion direction, and the pre-forming section comprises a pre-forming cavity used for carrying out shape following and volume compression on fabrics; the flexible section comprises a transition cavity, and the transition cavity is used for pouring resin into the fabric and conducting heating and exhausting; the curing section comprises a curing cavity and a post-curing cavity, the curing cavity is used for curing the resin and combining the resin with the fabric to form a composite material, and the post-curing cavity is used for post-curing and eliminating internal stress; wherein the pre-forming section, the transition section and the curing section are spaced by a certain distance, and a first heating system and a second heating system are arranged on the transition section and the curing section respectively and used for heating the transition section and the curing section respectively. According to the utility model, a certain distance is formed among the pre-forming section, the transition section and the curing section, which is beneficial to isolating and controlling processes in different stages, so that the production efficiency and the product quality are improved.

The present invention relates to the field of composite pultruded sheet preparation, and specifically to a preparation process for a pultruded flat sheet with a high fiber content. The technical points are as follows: the fiber volume content of the high fiber content pultruded flat sheet is ≥72%; the preparation process includes: threading, fiber heating treatment, dipping, preforming, precuring, curing, post-curing, traction and cutting; wherein the fiber heating pretreatment adopts infrared preheating treatment to make the fiber temperature between 35 and 45°C. According to the preparation method of this patent, compared with the traditional preparation process, the porosity and impregnation defect problems of the composite sheet are greatly reduced, the interface bonding ability between the fiber and the sheet is improved, and the internal stress accumulation caused by the rapid curing of the pultruded resin is reduced. At the same time, it ensures that the internal stress generated is effectively released in the post-curing stage, thereby reducing the fatigue performance degradation caused by stress concentration.