280 results about "Liquid resin" patented technology

The invention discloses a 3D printed part morphology control method and system based on supporting structure morphology compensation, and relates to the technical field of additive manufacturing. Comprising the steps that a to-be-printed target model is processed, and a to-be-printed model considering a supporting structure form and slurry infiltration characteristics is generated; the printing direction of the to-be-printed model and the interface positions of different slurries during multi-material printing are determined, and the interface positions are perpendicular to the printing direction; according to the determined printing direction and the determined interface position, parts corresponding to different kinds of slurry are printed in sequence, and when the slurry is replaced, the datum plane of the printed part is cleaned, and residual materials are removed; and curing the printed model, removing the supporting structure, cleaning and integrally curing to obtain a final finished product. Liquid shaping is achieved only by means of the modified supporting structure, the printing time cost and the mechanical cost are saved, and accurate regulation and control of the liquid resin form are achieved on the premise that no external device is additionally arranged through integrally-formed supporting morphological optimization.

The invention provides a composite porous carbon material and a preparation method thereof, and a silicon-carbon negative electrode material and a preparation method thereof, and belongs to the technical field of silicon-carbon negative electrode materials. Liquid resin, biomass carbon and carbon nanotubes are fully mixed in an organic solvent, a high-strength spherical porous carbon material is obtained through processes of spray drying, carbonization, activation and the like, and finally the silicon-carbon negative electrode material is obtained through silicon deposition and carbon coating. The resin coating, the carbon nanotubes and the spherical structure cooperate with one another, so that the strength of the porous carbon structure is greatly enhanced; the high-strength porous carbon base material can effectively relieve the problem of pore fracture caused by silicon expansion and high compaction of the pole piece, improve the first efficiency and slow down long-cycle capacity attenuation.

The invention discloses an ingredient mixing device for CIPP-ultraviolet light curing repair material production, and particularly relates to the technical field of CIPP-ultraviolet light curing repair material.The ingredient mixing device comprises a shell, supporting frames are fixedly connected to the four corners of the lower end of the shell, and a stirring mechanism is arranged on the lower portion of the inner surface of the shell; the inner surfaces of the two circular cavities are jointly provided with a pretreatment assembly, and a premixing assembly is arranged above the stirring mechanism. According to the ingredient mixing device for production of the CIPP-ultraviolet curing repair material, the pretreatment assembly is arranged, a liquid resin material is subjected to layered swinging, scraping, runner conveying and converging mixing, and the problem that local aggregation or layered precipitation is prone to occurring due to viscosity and density differences caused by different types of liquid resin is solved; different types of liquid resins can firstly form independent thin layers, and then are gradually contacted and fused along a flowing path, so that full shearing and permeation among the liquid resins are realized, and the mixing uniformity of the liquid resins is improved.

The invention provides a coordinated control method and system for a pultrusion line, and belongs to the technical field of plastic state substance processing. The production requirement information is analyzed, and a weaving instruction is sent to a weaving machine to weave a net-shaped layer; controlling a winding machine to wind wefts to obtain a fiber braided fabric; injecting liquid resin into the fiber braided fabric; and the fiber braided fabric injected with the liquid resin is heated, cured and formed through pultrusion equipment, speed coordination control is conducted based on a traction machine, and a target production product is pulled out through pultrusion and traction. According to the pultrusion line coordination control method and system, the fiber braided fabric is braided and wound on the basis of the production requirement information, the liquid resin is injected into the fiber braided fabric, the fiber braided fabric injected with the liquid resin is heated, cured and formed through the pultrusion equipment, and speed coordination control is conducted on the basis of the traction machine; and a target production product is pulled out through pultrusion, so that the production efficiency of the extruded and drawn wire is greatly improved.

To reduce the time required for removing a wafer mask.SOLUTION: Provided is a division method for dividing a wafer (10) along a street (14) by irradiating the wafer with a plasma-activated etching gas (EG), in which the wafer has devices (15) formed in regions divided by the street. A liquid resin (34) is applied to the device and dried to form a mask (17) that masks the device surface while exposing the streets. Plasma-activated etching gas is then applied onto the wafer to form a division groove (18) along the streets. Subsequently, an altered portion (D) on the mask surface is removed by alternating continuous and pulsed irradiation with an oxygen-containing plasma (P), after which the entire mask is removed from the wafer.SELECTED DRAWING: Figure 5

The invention provides a carbon fiber induction heating closed-loop intelligent control system and method, and relates to the technical field of carbon fiber processing equipment, and the system comprises an unwinding device, a dipping device, a heating curing device, a winding device and a rack; the unwinding device, the dipping device, the heating and curing device and the winding device are all arranged on the rack; the unwinding device comprises an unwinding servo motor, an unwinding roller and a first guide roller; the dipping device comprises a dipping tank, a second traction roller and a first traction roller; liquid resin is contained in the dipping tank, and the dipping tank is used for carrying out resin coating and preliminary infiltration on carbon fibers; the heating and curing device comprises a shell, an iron core, a conductive roller, an insulating roller, a magnet exciting coil and a sensor group; the iron core, the conductive roller, the insulating roller, the magnet exciting coil and the sensor group are all arranged in the shell; the excitation coil is sleeved on the iron core; the insulating roller and the conductive roller are used for clamping carbon fibers; the winding device comprises a winding servo motor, a winding roller and a second guide roller.

To provide a two-component liquid resin composition which achieves improved performance balance between storage stability and fluidity.SOLUTION: A two-component liquid resin composition comprises a first liquid and a second liquid, wherein the first liquid contains an epoxy resin (A), an inorganic filler (C), and a sedimentation inhibitor (D); the second liquid contains an acid anhydride (B), an inorganic filler (C), and a sedimentation inhibitor (D); and the viscosity η5A of the first liquid is from 1.0 Pa s to 15.0 Pa s as measured under conditions of 5 rpm and 60°C using an E-type viscometer and a 3°×R14 cone rotor.SELECTED DRAWING: None

The invention provides PMMA (polymethyl methacrylate) liquid resin with a flame-retardant function and a preparation method of a ship based on a PMMA liquid resin continuous fiber composite material, and belongs to the technical field of polymer composite material preparation. According to the invention, the continuous fiber material is uniformly laid in the mold, and a vacuum assisted resin transfer molding (VARTM) process is adopted to ensure that the material is fully infiltrated and bubbles are eliminated. The PMMA liquid resin and the continuous fibers are fully combined through normal-temperature curing or heating curing, and a firm hull structure is formed. According to the method, the lightweight, corrosion resistance, transparency and impact resistance of the ship can be effectively improved, and the problem that the thermosetting resin glass fiber reinforced plastic ship cannot be recycled is solved. The whole ship is completely prepared from acrylic resin, complete separation of PMMA and fibers can be achieved by adopting a recovery method with MMA as a solvent, no solid waste exists in the whole process, closed-loop recovery of resources is achieved, and the method has great significance in energy conservation and environmental protection.

To provide a two-component liquid resin composition which achieves improved performance balance between storage stability and fluidity.SOLUTION: A two-component liquid resin composition comprises a first liquid and a second liquid, wherein the first liquid contains an epoxy resin (A), an inorganic filler (C), and a sedimentation inhibitor (D); the second liquid contains an acid anhydride (B), an inorganic filler (C), and a sedimentation inhibitor (D); the sedimentation inhibitor (D) includes a dispersant; and the viscosity η5A of the first liquid is from 1.0 Pa s to 50.0 Pa s as measured under conditions of 5 rpm and 25°C using an E-type viscometer and a 3°×R14 cone rotor.SELECTED DRAWING: None

The invention discloses porous graphite and a preparation method thereof, an electrode and a battery, and relates to the technical field of new energy. The preparation method of the porous graphite comprises the following steps: providing liquid resin and a liquid aromatic polymer, mixing, and sequentially carrying out heat treatment, carbonization treatment, graphitization treatment and activation treatment to obtain the porous graphite. According to the preparation method of the porous graphite provided by the embodiment of the invention, the porous graphite is prepared by taking the liquid resin and the liquid aromatic polymer as raw materials, multiple reactions of curing and aging of the resin and combination of the resin and the aromatic polymer occur in the heat treatment process, and the porous graphite is prepared in the carbonization process. Aromatic polymer molecules are rearranged into an ordered carbon layer, and resin cross-linked molecules form a hard carbon skeleton; in the graphitization process, the ordered carbon layer forms a graphite-like carbon layer, and the order degree of the hard carbon skeleton is not changed; in the activation process, the graphite-like carbon layer is difficult to etch, the hard carbon skeleton participates in the reaction to form a pore structure, and finally the porous graphite is prepared.

The invention discloses an aviation composite material paddle and a preparation method thereof, and the preparation method comprises the following steps: curing a carbon fiber prepreg by using a mold pressing process to prepare a carbon beam as a main bearing structure; a carbon beam and a light core material are used as internal supports through a three-dimensional weaving technology, a skin is formed through wrapping and weaving, and an integrated fiber prefabricated body is obtained; preparing a toughened resin system for RTM (resin transfer molding), wherein the toughened resin system comprises liquid resin capable of being thermally cured, a curing agent and a carbon nanotube subjected to surface chemical modification; and placing the fiber preform in a mold, closing the mold, injecting the toughened resin system into a mold cavity, curing, and demolding to obtain the aviation composite material paddle. According to the invention, the preparation of the composite material paddle with high surface precision, light overall weight and excellent impact toughness is realized, and the preparation method is good in process repeatability and suitable for batch production.

The invention relates to a sequence-adjustable Ti3C2Tx / GO heterojunction parallel arrangement enhanced multifunctional protective coating and a preparation method thereof, and relates to the technical field of surface engineering.The method comprises the steps that S1, epoxy electrophoretic resin and deionized water are weighed, mixed to be uniform and left to stand so that the epoxy electrophoretic resin and the deionized water can be fully cured, the cured solution is divided into two parts, and a solution A and a solution B are obtained; s2, fully protonated Ti < 3 > C < 2 > T < x > is added into the solution A; adding single-sided protonated GO into the solution B, and respectively stirring at room temperature for 1 hour to obtain a mixed solution A and a mixed solution B; s3, the mixed solution A and the mixed solution B are sequentially poured into an epoxy electrophoresis tank for electrophoretic deposition; and S4, after deposition is completed, residual liquid resin on the surface of the coating is washed away with running water, curing is conducted for 85-100 min at the temperature of 170-210 DEG C, and the multifunctional protective coating is obtained.

The invention discloses a multilayer printed circuit board pressing and glue filling method, and particularly relates to the technical field of multilayer circuit board pressing, and the method comprises the following specific steps: S1, selecting liquid resin oil with the same performance as a prepreg; s2, liquid resin oil is printed in the middle of the inner-layer circuit board in a silk-screen mode, after printing, standing is carried out, so that the liquid resin oil completely fills the circuit, and then low-temperature baking is carried out, so that the liquid resin oil reaches a semi-solidified state; s3, stacking the inner-layer circuit board, the prepreg and the outer-layer copper foil according to a specific sequence and direction to form a to-be-pressed body; and S4, the to-be-pressed body formed in the step S3 is put into a pressing machine to be pressed. According to the method, the liquid resin oil is used for replacing traditional PP filling glue, the liquid resin oil can be filled into the gap in the middle of the inner-layer circuit board by means of the good flowability of the liquid resin oil, the inner-layer circuit board is filled and leveled up, the glue filling effect is improved, and the technical difficulty of lamination production of the multi-layer circuit board is reduced.

To provide a two-component liquid resin composition which achieves improved performance balance between storage stability and fluidity.SOLUTION: A two-component liquid resin composition comprises a first liquid and a second liquid, wherein the first liquid contains an epoxy resin (A), an inorganic filler (C), and a sedimentation inhibitor (D); the second liquid contains an acid anhydride (B), an inorganic filler (C), and a sedimentation inhibitor (D); the sedimentation inhibitor (D) includes an inorganic thickener (excluding the inorganic filler (C)); and the viscosity η5A of the first liquid is from 1.0 Pa s to 50.0 Pa s as measured under conditions of 5 rpm and 25°C using an E-type viscometer and a 3°×R14 cone rotor.SELECTED DRAWING: None

The technology described herein provides methods and devices to manage process flows and support systems for 3D printing. The technology provides methods and devices for separating contaminants in 3D printing fluids. The technology provides methods and devices for aligning projectors with six degrees of freedom in 3D printers. The technology provides methods and devices to cause the flow of an immiscible liquid under an interface with liquid resin in a 3D printer liquid vat to be laminar, of proper height, and of appropriate flow rate to remove heat. The technology provides methods and devices to provide feedback loops for a three-dimensional printing process that uses a flow of oil under a liquid resin to control heat in the printing process.

The application discloses a processing method of a Magnus effect rotating drum wind sail structure integration, which comprises the following steps: winding a filamentous composite material on a mold as a bottom layer of a product; winding a structural core material on the bottom layer after the winding of the bottom layer is completed; winding the filamentous composite material on the structural core material as an outer layer of the product after the winding of the structural core material is completed; sealing the bottom layer and the outer layer and the structural core material therebetween, vacuumizing, and performing a resin flow guiding process after the winding is completed; guiding liquid resin to the bottom layer and the outer layer and the structural core material therebetween through a hose; solidifying the resin and performing segmented demolding after the resin is solidified. On the basis of the winding process adopting a sandwich structure, the application additionally adds a resin flow guiding process, integrates the resin for the winding formed sandwich structure, integrates the structure of the rotating drum wind sail, and has the advantages of high product strength, good quality, low processing difficulty and low comprehensive cost.

The invention relates to the technical field of cutting tools, and particularly discloses a cutting disc and a manufacturing method thereof, and the cutting disc comprises the following raw materials: liquid resin, a curing agent, reinforced fibers, an abrasive material and a filler. The reinforced fiber is one or a combination of more of glass fiber, carbon fiber and the like; the grinding material is one or a combination of more of white corundum, diamond and the like; the filler is one or a combination of more of molybdenum disulfide, copper powder and the like; the liquid resin can be a combination of epoxy resin E-44 and the like or a combination of unsaturated polyester and the like; the curing agent is selected from combination of dicyandiamide and the like or MEKP and the like according to the type of the liquid resin. The manufacturing method comprises the following steps: uniformly mixing the raw materials, carrying out hot press molding, carrying out secondary hardening, and finally thinning the hardened product to the thickness of 0.1-0.35 mm. The cutting blade is high in strength, good in wear resistance, controllable in thickness and capable of meeting the cutting requirements of different industries.

A quantum-dot light conversion film, a preparation method and an application thereof and an anti-ultraviolet blue-free yellow light for chip manufacturing are provided. The preparation method includes: (1) mixing a quantum-dot concentrate with an acrylic monomer, then adding high polymer for secondary mixing, to obtain a polymer; (2) after mixing the polymer and nanoparticles, adding additives for dispersion to obtain a light conversion liquid resin; and (3) coating and curing the light conversion liquid resin to obtain a quantum-dot light conversion film. The light conversion film has high light conversion efficiency, adjustable emission peak position and narrow half peak width. Its surface forms a tightly arranged high refractive index microlens structure. When the light reaches the microlens array, as the light output surface is a lens structure and the refractive index is improved, more light is emitted in the positive direction, thereby effectively improving the light output rate.

A liquid resin composition includes: (a) a resin making up 20-80 wt % of the liquid resin composition, wherein the resin is selected from the group consisting of a self-crosslinking acrylic resin and a polyurethane resin, and the glass transition temperature (Tg) of the resin is in the range from −20° C. to 25° C.; (b) thermal shielding particles making up 1-10 wt % of the liquid resin composition; and (c) a water-based solvent making up 5-25 wt % of the liquid resin composition. The film is formed by coating the substrate with the liquid resin composition and drying the liquid resin composition on the substrate. A film formed of the liquid resin composition of the present invention can block out IR and UV radiation while remaining highly permeable to visible light, meaning the film can ward off the radiant heat and UV radiation of sunlight but is still visually transparent.

The utility model provides a core material of a blade web plate of a wind generating set, the web plate, a blade and the wind generating set, a plurality of flow channels are arranged on the surface of the core material, and the plurality of flow channels extend along the same direction. According to the core material provided by the utility model, the plurality of runners for flowing of the poured liquid resin are arranged on the surface of the core material, so that the liquid resin can smoothly flow through the runners and fully spread the core material, auxiliary materials such as a flow guide net can be omitted, the process is simplified, and the cost is saved; furthermore, the plurality of runners extend along the same direction, so that the flowing of the liquid resin is more orderly and smoother.

A protective member forming apparatus is provided that determines whether a liquid resin has spread to a predetermined range when the liquid resin is pressed to spread. The protective member forming apparatus forms a protective member on the front surface of a substrate by laminating a UV-curable liquid resin and a cover sheet on a resin film. The apparatus comprises: a liquid resin supply unit that supplies the liquid resin to the resin film in close contact with the substrate; a pressing unit having a flat, light-transmissive pressing surface that presses the liquid resin with the pressing surface through the cover sheet to spread the liquid resin on the resin film; an ultraviolet irradiation unit that irradiates the liquid resin with ultraviolet rays to harden it; and a determination unit that determines the state of the spread liquid resin. The determination unit comprises: a camera that images the liquid resin and the substrate; and a determination unit that detects the liquid resin and the substrate based on the image captured by the camera and determines whether the liquid resin has spread to a predetermined range relative to the substrate.

The invention relates to a method for forming a decorative panel (10) for furniture, comprising the following steps: Providing (100) a base plate (1) defined by a lower wall (11) and an upper wall (12) and having several lateral faces (13); Providing (200) a frame (2), said frame (2) defining a central opening (21) of a shape substantially complementary to that of the base plate (1); Arranging (300) the base plate (1) inside the central opening (21) of the frame (2), so that the frame (2) surrounds the lateral faces (13) of the base plate (1) and defines a filling cavity (22) above the upper wall (12) of the base plate (1); Fixing the frame (2) to the base plate (1); Applying glue or an adhesive to the upper wall (12) of the base plate. base (1), the glue or adhesive being suitable for ensuring the adhesion of a layer of terrazzo (3) to the base plate (1);Deposition (400) of a terrazzo layer (3) formed from a mixture of liquid cement or liquid resin and aggregates of materials inside the filling cavity (22) until the terrazzo layer (3) is flush with an upper edge (23) of the frame (2); Drying (500) of the terrazzo layer (3) so as to solidify the cement or resin; Sanding (600) of the terrazzo layer (3) and the frame (2) until a smooth upper surface and a predetermined thickness are obtained; Polishing and then preferably application of a waterproof protective layer on the upper surface of the terrazzo layer (3). Figure 1;

The invention relates to the technical field of conductive silver adhesives, in particular to a high-shear-strength conductive silver adhesive and a preparation method thereof.The high-shear-strength conductive silver adhesive is prepared from, by weight, 40-70 parts of conductive silver powder, 10-30 parts of epoxy resin, 2-10 parts of modified liquid resin, 3-10 parts of reactive diluent and 4-8 parts of curing agent. The liquid resin is modified by introducing the silallyl compound containing Schiff base, and the proportion of each component is accurately regulated and controlled, so that the conductive silver adhesive with high shear strength and excellent conductivity is successfully prepared, and the conductive silver adhesive has a wide application prospect in the field of high-end electronic packaging.

To provide a decorative article having a metallic texture which can be hand-made in particular SOLUTION: The ornament is characterized in that a fiber material such as a patterned cloth is used as a base material, and a plurality of kinds of liquid materials for nail art are recoated so as to cover the base material and finished into a metallic texture. The liquid material for nail art includes a nail polish for undercoating, a plurality of kinds of gel nails for recoating, and a resin liquid, which are applied to the surface of the base material and cured by irradiation with ultraviolet rays to impart a metallic texture to the base material.SELECTED DRAWING: Figure 1

The invention relates to the technical field of mine safety monitoring, and discloses a device and method for measuring mining-induced stress, temperature and water pressure of a mine, the device comprises a high-strength metal shell, a hollow connecting rod, a water pressure measuring unit, a strain measuring unit, a temperature measuring unit and a single through optical fiber, and the surface of the shell is provided with a spiral resin grouting channel; a mechanical occlusion structure is constructed through a solid resin entity, and rock mass displacement is equivalently transmitted to a shell. The temperature compensation fiber bragg grating is coated with a heat insulation coating, in-situ rigid coupling is achieved by injecting liquid resin into a grouting channel, the central wavelength peak value of each grating is obtained through the wavelength division multiplexing technology, the environment temperature variable quantity is extracted based on the temperature compensation fiber bragg grating, and therefore the thermally induced drift distance of the strain grating is deducted, and the compensated strain value is obtained. And inverting and outputting the in-situ three-dimensional mining-induced stress state by mapping the constitutive equation set. According to the invention, synchronous high-fidelity acquisition of multi-physics field parameters is realized, and the intrinsic safety characteristic and the electromagnetic immunocompetence are realized.

The invention discloses a hardened resin parallel grinding wheel and a preparation method thereof. The hardened resin parallel grinding wheel comprises a parallel grinding wheel base body, the center part of the grinding wheel base body protrudes upwards, a shaft hole used for installing a grinding wheel is formed in the circle center position of the grinding wheel base body, and the base body is composed of a reinforcing material layer located in the base body and a grinding material layer wrapping the reinforcing material layer; the reinforcing material layer is composed of carbon fiber meshes coated with resin, the abrasive material layer is composed of, by weight, 50-60 parts of white corundum, 50-60 parts of single crystal corundum, 5-10 parts of liquid resin, 10-15 parts of powdery resin, 18-22 parts of an activating agent and 0.2-1.0 part of a coloring agent, the activating agent is an organic silicon activating agent or an organic fluorine activating agent, and the coloring agent is Fe2O3 or carbon black. The prepared hardened resin parallel grinding wheel not only can quickly polish a workpiece, but also can ensure that the strength and the heat dissipation effect of the resin grinding wheel are not changed, the durability of the resin grinding wheel is improved, meanwhile, vibration is avoided, and the operation and use comfort is kept.

The utility model provides a scraper knife assembly, a module, an automatic discharging device and a 3D printing system, a scraper knife main body is assembled on an assembly seat body, the scraper knife main body comprises a knife body main area part and a knife body function part which are connected, and the scraper knife main body is configured to have a knife body transverse direction and a knife body longitudinal direction which are perpendicular to each other; the cutter body main area part and the cutter body function part are longitudinally arranged along the cutter body, the area of the cutter body main area part is larger than that of the cutter body function part, and the cutter body function part is provided with an upper function surface and a lower function surface which face opposite directions. The upper functional surface and the lower functional surface are provided with liquid drainage structures, and the liquid drainage structures are used for guiding liquid printing materials to flow out of the knife body main area part. Therefore, the liquid resin can be guided out of the knife body main area part when passing through the liquid drainage structure, so that the liquid resin is prevented from flowing to the knife body main area part, and the subsequent cleaning of the scraper knife main body becomes simpler.

The invention relates to a flow battery pole plate preparation method based on mould pressing and a flow battery pole plate. The flow battery pole plate preparation method comprises the following steps: carrying out primary vacuumizing on an impregnation container in which a mould pressing plate formed by mould pressing is placed; injecting liquid resin into the dipping container until the liquid level of the liquid resin is higher than the top of the molded plate; vacuumizing the dipping container for the second time; pressurizing the impregnation container and maintaining the pressure for a set time to form an impregnation plate; the liquid resin in the impregnation container is discharged, and the liquid resin on the surface of the impregnation plate is cleaned after the impregnation plate is taken out; the cleaned dipping plate is subjected to water bath curing, so that resin filled in gaps of the dipping plate is cured; and drying the impregnated plate subjected to water bath curing to form the battery polar plate, and preparing the flow battery polar plate by using a mold pressing process by adopting the preparation method disclosed by the invention.

To provide a method for manufacturing an electronic device which suppresses deterioration of an electronic component by heat, and improves a performance balance between mechanical characteristics of a sealing material at the time of curing at low temperature.SOLUTION: A method for manufacturing an electronic device includes a sealing step of sealing a structure including a substrate including a circuit layer, and an electronic component on the circuit layer of the substrate, with a two-pack type liquid resin composition. The two-pack type liquid resin composition is composed of a first liquid and a second liquid. The first liquid contains an epoxy resin. The second liquid contains one or more amine-based curing agents selected from the group consisting of an alicyclic amine-based curing agent and an aromatic amine-based curing agent. The sealing step includes steps of: coating at least a part of the structure with a mixture containing the first liquid and the second liquid; primarily curing the mixture at 20°C or higher and lower than 60°C; and secondarily curing the obtained primary cured product at 60°C or higher and 150°C or lower, in this order.SELECTED DRAWING: None

The present application relates to the technical field of composite materials, and provides a carbon / carbon composite material and a preparation method thereof, and a carbon / carbon PECVD bearing frame.The present application mixes liquid resin and carbon material powder to obtain a carbon-containing resin liquid; carbon cloth is dipped in the carbon-containing resin liquid to obtain a prepreg; the prepreg is laminated and then subjected to mold pressing treatment; the obtained plate blank is carbonized; the carbonized plate material is then dipped in pitch; the dipped carbonized plate material is carbonized again to obtain a carbon / carbon plate material; and the carbon / carbon plate material is subjected to graphitization treatment to obtain a carbon / carbon composite material.The carbon / carbon composite material is subjected to fine machining to obtain the carbon / carbon PECVD bearing frame.The carbon / carbon PECVD bearing frame provided by the present application has the advantages of low density, high strength, and designable size, can adapt to the complex process environment of PECVD, is not prone to damage, has excellent mechanical properties, has a low replacement frequency, has a long service life, and can effectively reduce the cost of the PECVD process.