14 results about "Carbon fiber composite" patented technology

The invention discloses an intelligent carbon fiber composite board. The intelligent carbon fiber composite board mainly comprises a plurality of bundles of CFRP (composite fiber reinforced plastics) filaments, resin and fiber gratings, wherein the CFRP filaments are bi-directional orthogonal CFRP filaments, the fiber gratings are arranged in the middle part of each bundle of CFRP filaments, the fiber gratings are parallel to the CFRP filaments, and the resin fills between each bundle of CFRP filaments and each fiber grating. Each fiber grating is a germanium-silicon fiber bragg grating. The resin is vinyl ester resin. The CFRP filaments are used as a reinforcing material, the resin is used as a reinforcing basal body of the board, the germanium-silicon fiber bragg grating is used as an intelligent monitoring material, and each fiber grating is parallel to the CFRP filaments, so that a resin-enriching area is prevented from forming near the fiber grating, the non-uniform stress area surrounding the sensor can be maximally reduced, the loss of the measurement precision of the fiber grating can be reduced, the performance of the composite board is better than each fiber board in the prior art, and the requirement of a steel structure reinforcing repairing technology can be met.

The invention provides a carbon fiber composite material enhanced ultrahigh pressure movable bend. The movable bend is provided with a seal ring on the end portion of an AD bend; the AD bend is connected to an AB bend; steel balls are mounted in an upper steel ball slot and an inner ball channel at the connection; a packing is mounted at the connection of the AD bend and the AB bend; a retainer ring and a wing-shaped nut are mounted on the end portion of a BC straight head; the BC straight head is connected to the AB bend; steel balls are mounted in a lower steel ball slot 10 and an inner ballchannel at the connection; and carbon fiber composite materials externally cover the AD bend, the AB bend and the BC straight head. As the carbon fiber composite materials externally cover the AD bend, the AB bend and the BC straight head and have ultrahigh tensile strength, the strength of the bend and the straight head is improved effectively. The movable bend can bear 140MPa and over ultrahighpressure fluid.

The invention discloses a combined tool for a carbon fiber aramid paper honeycomb sandwich composite board. The combined tool for the carbon fiber aramid paper honeycomb sandwich composite board comprises a tool bar and a tool bit, wherein the tool bit comprises a first cutting component and a plurality of second cutting components, the first cutting component is used for machining an upper carbonfiber layer and a lower carbon fiber layer of the composite board, and comprises an upper tool disc and a lower tool disc, a plurality of first spiral grooves are formed in the periphery of each tooldisc correspondingly, and first tool teeth of the tool discs are formed between every two adjacent first spiral grooves; the plurality of second cutting components are used for machining an aramid paper honeycomb sandwich layer of the composite board, and the second cutting components are stacked together; each second cutting component comprises two blades which are adjacent to each other up anddown, and a plurality of second spiral grooves are formed in the periphery of each blade correspondingly, and second tool teeth of each blade are formed between every two adjacent second spiral grooves; the second cutting components are located between the two tool discs, and the cutting directions of the first tool teeth of the tool discs and the cutting directions of the second tool teeth of each blade are consistent. According to the combined tool for the carbon fiber aramid paper honeycomb sandwich composite board, synchronous cutting of carbon fiber composite material and aramid paper honeycomb core material can be realized, the machining quality and the machining efficiency are improved, and the service life of the tool is prolonged.

The invention belongs to the field of composite material structure design and analysis, and particularly relates to a method for designing and checking torsional rigidity of a carbon fiber composite material winding pipe fitting. Comprising the following stages: (1) a data preparation stage: drawing a change process curve (hereinafter referred to as a shear modulus process curve) of an equivalent shear modulus Gxy of a virtual winding pipe fitting along with a winding angle +/-theta on the basis of basic mechanical property parameters of a composite material in combination with a classical composite material mechanical basic principle; (2) a rigidity design stage: calculating an equivalent shear modulus Gxy meeting the rigidity requirement according to information such as the inner diameter, the outer diameter, the length and the torsional rigidity index of the winding pipe fitting, and then reversely checking a shear modulus process curve to obtain an available winding angle range; and (3) a rigidity checking stage: querying the corresponding equivalent shear modulus Gxy according to the inner diameter, the outer diameter, the length and the winding angle +/-theta of the winding pipe fitting, and then directly obtaining the torsional rigidity of the structure at the current winding angle by applying a torsional rigidity calculation formula.

The invention relates to carbon fiber cloth and a pasting method of a carbon fiber composite material composed of the carbon fiber cloth. The carbon fiber cloth is formed by a plurality of carbon fiber bundles according the to texture angles of 0, +/-20 degrees and +/-45 degrees in an intersecting manner; and then the carbon fiber cloth is subjected to layer laying by adopting an overlap joint andfolding overlapping manner, then demolding is performed, and curing is performed. The carbon fiber cloth with the special texture angles is adopted for the pasting method, various layers of compositematerials are pasted more closely by adopting the overlap joint and folding overlapping layer laying manner, it is not likely to generate bubbles during hot pressing forming, stress of various positions is balanced, and therefore the product performance is improved.

The invention provides a carbon fiber composite operation skeleton of a display and control console. The carbon fiber composite operation skeleton comprises a skeleton upper half part, a skeleton lower half part, rivets and carrying plate nuts, wherein the skeleton upper half part and the skeleton lower half part are manufactured through a carbon fiber composite; the skeleton lower half part is provided with an edge groove used for clamping the skeleton upper half part; a structural adhesive is arranged at the edge groove part of the skeleton lower half part; the skeleton upper half part and the skeleton lower half part are bonded through the structural adhesive; and the skeleton upper half part and the skeleton lower half part are connected at the edge groove part through the rivets and the carrying plate nuts. According to the carbon fiber composite operation skeleton of the display and control console, the composite structure with high specific strength and good vibration resistance, shock resistance, fatigue resistance and corrosion resistance is obtained through assembly, and the weight of an operation module of the display and control console is greatly decreased.

The invention relates to an assembling method of mechanical parts. The assembling method includes providing a first mechanical part made of carbon fiber materials or carbon fiber composites and provided with screw holes and providing a second mechanical part provided with through holes; coating glue at the bottom of screws; passing the screws after being glued through the screw holes and screwing the screws into the screw holes until the screw holes stop moving; standing still after the screw holes stop moving until glue solidifies into membrane to form a gel layer. With the assembling method of the mechanical parts, assembling strength of the screws and the screw holes is increased, screw loosening condition during load-bearing operation of mechanical arms is avoided, operating accuracy and working efficiency of the mechanical arms are improved, equipment failure or shutdown is avoided and operation is simple and convenient.

The invention relates to a bulletproof plate made of carbon fiber composites and a method for manufacturing the bulletproof plate. The bulletproof plate comprises a rigid face layer, a face layer connecting transition layer, an energy absorption layer, a back layer connecting transition layer and a rigid back layer which are formed by means of hot pressing. The rigid face layer is made of carbon fiber resin-based composites; the face layer connecting transition layer and the back layer connecting transition layer are made of prepreg, and energy absorption fibers and carbon fibers with immersed thermosetting resin are braided to form the prepreg; multilayer plates made of energy absorption fiber-reinforced composites are pressed to form the energy absorption layer; toughened and modified thermosetting resin and one type or a plurality of types of high-performance carbon fibers, basalt fibers and ceramic fibers are composited and pressed to form the rigid back layer. The bulletproof plate and the method have the advantages that the bulletproof plate is made of multilayer composite materials, can effectively resist impact force of bullets and is light as compared with the traditional bulletproof materials, and the bullet penetration depths can be effectively reduced.

The invention provides a high-solid-content colored transparent coating composition capable of being used for a carbon fiber composite material, a preparation method of the high-solid-content colored transparent coating composition and a corresponding surface treatment method. The coating composition has the characteristics of high solid content, high chroma, high glossiness, different colors and effects and high weather resistance. The coating can be more efficiently and conveniently applied to the surface of the carbon fiber composite material in a spraying mode, so that the carbon fiber composite material is subjected to transparent coating with different colors and effects, the carbon fiber composite material is endowed with richer colors and texture effects, resin and pigment of the coating can provide good weather resistance, and the anti-yellowing protective coating has a good anti-yellowing protective effect on a carbon fiber base material, so that the anti-yellowing protective coating can be applied to automobile exterior trimming parts and has a fiber weaving texture effect.

The invention discloses a carbon fiber composite material for a main rotor of a helicopter and a preparation method of the composite material. According to the preparation method, the surface of a carbon fiber plate is coated with a pre-cured product, the friction performance of carbon fibers is effectively improved, meanwhile, through preparation of graphene modified phenolic resin, the tensile strength of the whole product is effectively improved, and according to GB/T 31290-2014 measurement, the tensile strength of the carbon fiber composite material for the main rotor of the helicopter is 90-95 MPa. The invention further discloses coating equipment, the coating equipment can meet conveying and coating of the carbon fiber plates with different thicknesses through the arrangement of a lifting shell with the adjustable height; and through the design of a conveying mechanism, conveying rollers can meet the requirement for coating the carbon fiber plates while conveying the carbon fiber plates, and a plurality of conveying rollers are used for coating the carbon fiber plate for multiple times, so that the coating effect on the surface of the carbon fiber plate is good.

The invention relates to a system and method for recycling fiberglass reinforced plastic or carbon fiber composite waste. The system comprises: a cleaning unit for cleaning fiberglass reinforced plastic or carbon fiber composite waste; a screening unit for screening large-sized fiberglass reinforced plastic or carbon fiber composite waste with geometric properties and small-sized fiberglass reinforced plastic or carbon fiber composite waste with no geometric properties; a crushing unit for crushing the small-sized fiberglass reinforced plastic or carbon fiber composite waste with no geometricproperties; a combustion improver processing unit for weighing, proportioning and mixing the crushed fiberglass reinforced plastic or carbon fiber composite waste with a combustible material; a shaping unit for secondary design of the large-sized fiberglass reinforced plastic or carbon fiber composite waste. The fiberglass reinforced plastic or carbon fiber composite waste is treated by subjectingthe fiberglass reinforced plastic or carbon fiber composite waste to secondary design and applying the same as a combustion improver; therefore, waste utilization is increased.

The invention provides a display and control console support arm and a forming method thereof. The display and control console support arm is provided with a special-shaped closed cavity. The method comprises the following steps: respectively paving a first film and a second film which are made of a carbon fiber prepreg carbon fiber composite material on the inner walls of an upper die and a lower die of a die; an air pipe is laid in the lower mold where the second film is laid, and then the lower mold and the upper mold where the first film is laid are assembled; after die assembly, high-pressure gas is introduced into the air pipe, so that the first film and the second film are attached to the upper die and the lower die respectively; after high-pressure gas is introduced, the first film and the second film are heated and cured, so that the first film and the second film are formed and combined together; the upper die and the lower die are removed; wherein the shape of the shell of the air pipe is the same as that of the display and control console support arm. According to the forming method of the display and control console supporting arm, the process flow can be shortened, and the forming efficiency can be improved. And moreover, the risk of glue joint cracking can be controlled, and the product stability is improved.

The invention provides a carbon fiber composite plate and a manufacturing method thereof. The carbon fiber composite plate comprises protection layer plates which include the first protection layer plate and the second protection layer plate. A plate core is inlaid between the first protection layer plate and the second protection layer plate. The plate core is a carbon fiber plate core. Through holes are formed in the first protection layer plate and the second protection layer plate, penetrate through the first protection layer plate and the second protection layer plate and communicate with the plate core. By adoption of the technical scheme, the static bending intensity of the carbon fiber composite plate can be improved, and the nonaqueous property, watertightness, non-deformation, concrete non-adhesion, high temperature resistance, abrasion resistance, acid and alkali resistance and the like of the composite plate can be improved; meanwhile, by applying the carbon fiber composite plate to building construction, the problems of plate surface expansion, delaminating, plumping up, thickness non-uniformity and the like can be avoided; and the carbon fiber composite plate provided by the invention is simple in structure and can be manufactured directly through an old formwork, thereby being economical and practical.