46results about How to "Rapid curing molding" patented technology

The invention discloses a method for adopting a microwave ultrasound solidification fibre reinforced composite component and a special device thereof. The method comprises the following steps of: firstly placing a prefabricated part in a filling module, wherein the filling module simultaneously uses ultrasonic wave to accelerate a resin to permeate and increase the wettability; and using a microwave heating module after finishing until resin is full solidified. The special device is used for installing a mould in a microwave cavity, the microwave cavity is externally connected with a microwave generator, and the microwave cavity is internally provided with an ultrasonic transducer and is externally connected with an ultrasonic generator. The method and the special device provided by the invention solve the problems that when a fibre reinforced composite material is manufactured by using the traditional composite material forming method, the manufacturing time is long, the energy consumption is high, the fiber soakage is not full and a local region is not filled by a module, and the quality and performance of composite material parts are improved.

The invention relates to a forming device and a forming method for a tubular three-dimensional braided composite product. The forming device comprises a flexible core mold, an inward-contracting demolding device, a flexible RTM outer mold, a mold curing device and a medium circulation device, wherein the inward-contracting demolding device is arranged between the flexible RTM outer mold and the flexible core mold; the flexible curing device is arranged on the outer side of the flexible RTM outer mold; and the flexible core mold is connected with the medium circulation device. The forming device is applicable to forming of the tubular three-dimensional braided composite product; by adoption of the forming device, a curved tubular three-dimensional braided composite with various uniform interfaces and various irregular variable cross sections can be prepared; meanwhile, after preform fabric is subjected to braided molding, resin RTM impregnation and rapid curing molding can be performed continuously; and besides, the forming device has the function of quickly demolding the tubular three-dimensional braided composite product. Accordingly, the problem that a conventional metal or wood core mold is cumbersome in molding process, single in function and relatively low in production efficiency can be effectively solved.

The invention provides fast-curing epoxy resin suitable for HP-RTM (high pressure-resin transfer molding) and a preparation method. The fast-curing epoxy resin is prepared from low-viscosity epoxy resin, a diluent and a modified curing agent, wherein room-temperature viscosity of the low-viscosity epoxy resin is not higher than 2500 mPa.s, epoxy value of the low-viscosity epoxy resin is not lowerthan 0.6, room-temperature viscosity of the diluent is not higher than 100 mPa.s, and the use quantity of the modified curing agent is 5%-15% of the total mass of the epoxy resin. By means of reasonable selection and matching of modified imidazole and a special modified alicyclic amine curing system, the curing time is shorter and is only 5-10 min, besides, the curing reaction is stable, fast curing molding of a resin based composite material can be realized, production efficiency is improved, and production cost is reduced.

The invention discloses a preparation method of photosensitive particle stabilizing emulsion as well as a preparation method of a thin-wall hollow sphere, and belongs to the technical field of a porous ceramic material. The photosensitive particle stabilizing emulsion is obtained by mixing and emulsifying oil phase and ceramic powder-containing aqueous phase slurry, wherein at least one of the aqueous phase and the oil phase contains a photosensitive material, and a corresponding photoinitiator is added; the thin-wall hollow sphere is prepared by the steps of diluting photosensitive emulsion and applying an external light field to initiate photosensitive oligomer molecular polymerization reaction to obtain a solidified ceramic granule assembling hollow sphere, separating and sintering; thephotosensitive emulsion prepared by the method can be applied to photocuring 3D printing; the hollow sphere prepared by the method is controllable in structure and is widely applied; and the preparation method provided by the invention has the advantages of simplicity, high efficiency and low cost and is easy in industrial promotion.

The invention discloses a bio-degradable film hot-press forming bag making machine, and relates to the technical field of bio-degradable films. The bio-degradable film hot-press forming bag making machine aims at solving the problems that the structure is complex, and the bag making effect is poor. The bio-degradable film hot-press forming bag making machine specifically comprises a supporting bottom plate. One end of the outer wall of one side of the top of the supporting bottom plate is fixedly connected with a first supporting column, the top of one side of the first supporting column is rotationally connected with a pay-off roller, the middle position of the top of the supporting bottom plate is fixedly connected with a supporting table, the four corners of the top, close to the supporting table, of the supporting bottom plate are fixedly connected with fixing columns, the tops of the fixing columns are fixedly connected with a top plate, and the middle position of the top of the top plate is fixedly connected with a hydraulic cylinder. A cutter is heated, the bio-degradable films are subjected to thermal cutting type bag making treatment through the cutter, the operation is convenient, cold air enters a fixing groove through a vent port, thermally-cut degradable film bags are cooled through a heat guide plate, and the cutting surfaces of the degradable film bags are rapidly cured and formed.

The invention provides a double component additive sealing organic silicon material for an electric kettle. The material is prepared from components A and B equal in mass. The component A is preparedfrom the following raw materials in parts by mass: 70-100 parts of vinyl polysiloxane, 5-30 parts of white carbon black, 0.5-5 parts of an adhesive and 0.1-0.5 part of a catalyst. The component B is prepared from the following raw materials in parts by mass: 70-100 parts of vinyl polysiloxane, 5-30 parts of white carbon black, 2-20 parts of hydrogen-containing silicone oil and 0.001-0.2 part of aninhibitor. The invention belongs to the technical field of organic silicon materials. The double component additive sealing organic silicon material can be used for quickly adhering and curing the electric kettle, is low in curing temperature and short in time, simple in preparation raw materials, low in cost, safe and reliable and high in food grade, and can meet the demands on high-end standards such as FDA.

The invention discloses a 3D printing ceramic preparation method and a product thereof. The preparation method comprises the following steps: S1, adding ceramic powder into a mixed solution of a binder and an organic solvent, and uniformly stirring to obtain slurry; S2, subjecting the slurry to extrusion moulding through micro-flow extrusion moulding equipment to obtain a ceramic blank, immediately immersing the printed ceramic blank into an inorganic solution, and rapidly moulding, wherein the organic solvent and the inorganic solution are mutually soluble; S3, after the ceramic blank is cured and hardened, taking out and drying the ceramic blank; S4, removing the binder; and S5, calcining at a high temperature to obtain ceramic. The provided ceramic slurry has good fluidity and stability, and has a proper solid phase content, the printed slurry has excellent shape retention ability, and the ceramic blank prepared by calcination is porous and not easy to crack. The porosity is regulated and controlled according to the ratio of the organic solvent to the ceramic powder, a hierarchical pore structure is realized, and ceramic parts with complex geometrical shapes can be prepared.

The invention relates to a transparent silica gel for liquid crystal display fitting. A raw material formula comprises 35-55 parts of component A, 10-25 parts of component B, 2-15 parts of component C, 5 parts of bonding accelerant, 5-25 parts of component E, 0.1-5 parts of catalyst and 0.1-1.0 part of inhibitor; the component A is vinyl-terminated polysiloxane conforming to general formula (1); the component B is allyloxy-terminated polypropylene oxide conforming to general formula (2); the component C is vinyl MQ silicon resin; ratio of M to Q is at 0.8-1.5; the component E is hydrogen-endedpolysiloxane conforming to general formula (3). The transparent silica gel for liquid crystal display fitting prepared according to the invention has the advantages of low viscosity, short defoamingtime, quick curing molding and moderate hardness.

The invention relates to a 3D low-temperature printing material and a preparing method thereof. The 3D low-temperature printing material comprises a base body material which is composed of polyoxyethylene (PEO) and a rigid low-temperature melt, the mass of PEO in the base body material accounts for 70-100%, the mass of the rigid low-temperature melt accounts for 0-30%, the 3D low-temperature printing material further comprises a stabilizer and a plasticizer, the dosage of the stabilizer accounts for 0.5-1 wt% of the mass of PEO, and the dosage of the plasticizer accounts for 0.1-10 wt% of themass of PEO. Polyoxyethylene serves as the main material, by adding the rigid low-temperature molten polymer, then through blending and extrusion pelletizing, a modified polyoxyethylene material is obtained, and then a wire of which the diameter is 1.75 mm is prepared through an extruder. Compared with the prior art, in the printing process, the material does not flow, and can be quickly cured andformed; meanwhile, the heat resistance of the material can be improved, and the 3D low-temperature printing material is novel and has a good application prospect.

The invention discloses a building pipe pile with built-in reinforcing ribs, and belongs to the field of building construction. According to the technical scheme, the building pipe pile is characterized by comprising a pipe pile outer layer, a supporting inner pipe and a reinforcing rib set, wherein the supporting inner pipe is fixedly connected to the inner wall of the pipe pile outer layer, thereinforcing rib set is detachably connected to the inner wall of the supporting inner pipe, four fixing ribs which are annularly distributed with the circle center of the supporting inner pipe as thecenter are fixedly connected to the outer wall of the supporting inner pipe, and four positioning grooves which are annularly distributed with the circle center of the supporting inner pipe as the center are formed in the inner wall of the supporting inner pipe; and the four positioning grooves are formed in the inner wall of the pipe pile, the reinforcing rib set is additionally arranged inside in a detachable connection mode, a plurality of rectangular holes are further formed in the surface of the reinforcing rib set, the reinforcing rib set can be filled with pouring materials, the strength of the pipe pile is improved, a reinforcing mesh is poured through a mold to form the supporting inner pipe, reinforcing bars are placed in positioning circular grooves in the outer wall of the supporting inner pipe for secondary pouring to form the pipe pile outer layer, and the strength of the pipe pile is better guaranteed through the reinforcing rib set.

The invention discloses a conductive concrete composition capable of being rapidly cured and molded, a preparation method and application thereof. The conductive concrete composition capable of being rapidly cured and molded comprises rapidly cured cement serving as a base material and conductive concrete combined slurry taking the base material as a benchmark, and the conductive concrete combined slurry comprises the following components by mass percentage: 0.05-2% of graphene, 0.5-3% of a graphene dispersing agent, 0-40% of a conductive filler and 15-30% of water. The rapidly cured cement is phosphorus-magnesium cement. The conductive concrete composition provided by the invention has the advantages of rapid mass production of concrete products with good conductivity, high mechanical strength, stable resistivity and good durability, not only improves the conductivity (the resistivity can reach 10ohm.cm) of a base material, but also accelerates the molding process (room temperature curing within 30min), and can be widely applied to the fields of electric heating, electric heating pavements and the like.

The invention discloses a steel plate conveying belt for conveying metal plates. The steel plate conveying belt is of a two-cloth two-glue structure and comprises a conveying belt upper layer part and a conveying belt lower layer part which are formed by laminating a solvent-free two-component polyurethane glue, wherein the conveying belt upper layer part is formed by compounding a high-strength fabric framework coated with a PU glue, a TPU coating layer and a silicon sulfide modified TPU thermoplastic resin coating layer, and the conveying belt lower layer part is formed by compounding a high-strength fabric framework coated with a PU glue and a foaming coating layer. The invention further discloses a preparation method of the steel plate conveying belt for conveying metal plates. According to the invention, the thickness of the two-cloth two-glue conveying belt can reach 3.5-6 mm, and compared with an existing steel plate conveying belt needing three to five times of coating attaching, the conveying belt is high in production efficiency and small in loss.